Win touch option

.gitignore

@@ -24,4 +24,3 @@ test/nashorn/lib
 NashornProfile.txt
 **/JTreport/**
 **/JTwork/**
-/jb/project/java-gradle/.idea/workspace.xml

.hgtags

@@ -598,28 +598,3 @@ e42c6d1a1993c720a4643140190bb1ba6f1bbf9f jdk-11.0.8+6
 59f8565ee5e224697a9e09ee2c557836733bc579 jdk-11.0.8+9
 0b0d55cb09b29360ab254edeef32a3b386e9713e jdk-11.0.8+10
 0b0d55cb09b29360ab254edeef32a3b386e9713e jdk-11.0.8-ga
-5cc275af8419178813299cc0ed81a2a85dadfdcd jdk-11.0.9+1
-3112657edde9491fb83f098f1a8b7e9275bcb2f7 jdk-11.0.9+2
-d8a0513b92ee262d4e64c1e13d43e1b3f3e5c5d5 jdk-11.0.9+3
-cb299db4a5698b814f6b3ba1f3d73d01f6a0e1f6 jdk-11.0.9+4
-55237fa85afb404bc0dc0f4948a6459d8d3e5dac jdk-11.0.9+5
-c07e785e36f587b95e151de382844cea3d1a5868 jdk-11.0.9+6
-1ba4c16a8afa3f5aaa7830fc1f14a0137cc2553b jdk-11.0.9+7
-8711e8554e15ae2fa38718d5c7dc858da10e8a4a jdk-11.0.9+8
-e872676174c7f171a9864becba83cb783cfec9d0 jdk-11.0.9+9
-6ac1b68e7c0034e08a96d7d37e93e5075a6e8d61 jdk-11.0.9+10
-4397fa4529b2794ddcdf3445c0611fe383243fb4 jdk-11.0.9+11
-4397fa4529b2794ddcdf3445c0611fe383243fb4 jdk-11.0.9-ga
-4fd46d208f0a4b55924af8e0c2fb6bcf46e18ec6 jdk-11.0.9.1+0
-27723943c0dd65a191cbefe031cec001521e4b13 jdk-11.0.9.1+1
-31affc22b3b5f5d43783ffadf57f22848bad9db8 jdk-11.0.9.1-ga
-f3168de4eb0dd74bf8e81537f62742bde5e412c3 jdk-11.0.10+1
-a35aa07b57bab3690224e3af939ee085d50eb476 jdk-11.0.10+2
-bca12c00a776f8cee7a0eeaf788499b9eab9cf9d jdk-11.0.10+3
-9504fa6f98f5aad0aa1ac36d5bff3260a32020c8 jdk-11.0.10+4
-5f5c3544ccb4d0bbc638e665524b292860dd9515 jdk-11.0.10+5
-4b9bc2a1dde0631958393125997855382325964d jdk-11.0.10+6
-c45f74d45787a857d35b5a66c9b0304c91a9c5d0 jdk-11.0.10+7
-43428f69099f6f87f6e1922deacbf13e1adb751f jdk-11.0.10+8
-8b3498547395ee80a6e731078056b2aeb3e3c5e8 jdk-11.0.10+9
-8b3498547395ee80a6e731078056b2aeb3e3c5e8 jdk-11.0.10-ga

.idea/copyright/JetBrains.xml

@@ -1,7 +1,9 @@
 <component name="CopyrightManager">
   <copyright>
-    <option name="allowReplaceRegexp" value="JetBrains" />
-    <option name="notice" value="Copyright 2000-&amp;#36;today.year JetBrains s.r.o.&#10;DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.&#10; &#10;This code is free software; you can redistribute it and/or modify it&#10;under the terms of the GNU General Public License version 2 only, as&#10;published by the Free Software Foundation.&#10;&#10;This code is distributed in the hope that it will be useful, but WITHOUT&#10;ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or&#10;FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License&#10;version 2 for more details (a copy is included in the LICENSE file that&#10;accompanied this code).&#10;&#10;You should have received a copy of the GNU General Public License version&#10;2 along with this work; if not, write to the Free Software Foundation,&#10;Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.&#10;&#10;Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA&#10;or visit www.oracle.com if you need additional information or have any&#10;questions." />
+    <option name="notice" value="Copyright 2000-&amp;#36;today.year JetBrains s.r.o.&#10;&#10;Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);&#10;you may not use this file except in compliance with the License.&#10;You may obtain a copy of the License at&#10;&#10;http://www.apache.org/licenses/LICENSE-2.0&#10;&#10;Unless required by applicable law or agreed to in writing, software&#10;distributed under the License is distributed on an &quot;AS IS&quot; BASIS,&#10;WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.&#10;See the License for the specific language governing permissions and&#10;limitations under the License." />
+    <option name="keyword" value="Copyright" />
+    <option name="allowReplaceKeyword" value="JetBrains" />
     <option name="myName" value="JetBrains" />
+    <option name="myLocal" value="true" />
   </copyright>
 </component>

.idea/vcs.xml

@@ -8,7 +8,7 @@
           <option name="linkRegexp" value="http://youtrack.jetbrains.com/issue/$0" />
         </IssueNavigationLink>
         <IssueNavigationLink>
-          <option name="issueRegexp" value="^(\d+)\:" />
+          <option name="issueRegexp" value="(\d+)\:" />
           <option name="linkRegexp" value="https://bugs.openjdk.java.net/browse/JDK-$1" />
         </IssueNavigationLink>
       </list>

README.md

@@ -1,12 +1,19 @@
 [![official JetBrains project](http://jb.gg/badges/official.svg)](https://confluence.jetbrains.com/display/ALL/JetBrains+on+GitHub)
 
+# Downloads
+
+|Windows-x64  |macOS        |Linux-x64    |
+|-------------|-------------|-------------|
+|[ ![Download](https://api.bintray.com/packages/jetbrains/intellij-jdk/openjdk11-windows-x64/images/download.svg) ](https://bintray.com/jetbrains/intellij-jdk/openjdk11-windows-x64/_latestVersion)|[ ![Download](https://api.bintray.com/packages/jetbrains/intellij-jdk/openjdk11-osx-x64/images/download.svg) ](https://bintray.com/jetbrains/intellij-jdk/openjdk11-osx-x64/_latestVersion)|[ ![Download](https://api.bintray.com/packages/jetbrains/intellij-jdk/openjdk11-linux-x64/images/download.svg) ](https://bintray.com/jetbrains/intellij-jdk/openjdk11-linux-x64/_latestVersion)|
+
+
 # How JetBrains Runtime is organised
 ## Workspaces
 
 [github.com/JetBrains/JetBrainsRuntime](https://github.com/JetBrains/JetBrainsRuntime)  
 
 ## Getting sources
-__macOS, Linux:__
+__OSX, Linux:__
 ```
 git config --global core.autocrlf input
 git clone git@github.com:JetBrains/JetBrainsRuntime.git
@@ -18,12 +25,12 @@ git config --global core.autocrlf false
 git clone git@github.com:JetBrains/JetBrainsRuntime.git
 ```
 
-# Configure local build environment
+# Configure Local Build Environment
 [OpenJDK build docs](http://hg.openjdk.java.net/jdk/jdk11/raw-file/tip/doc/building.html)  
-Tip for all platforms: run `./configure` and check output.  
+Tip for all platforms: run ./configure and check output.  
 Usually, it has meaningful advice how to solve your problem.
 
-## Linux (Docker)
+## Linux (docker)
 ```
 $ cd jb/project/docker
 $ docker build .
@@ -35,6 +42,7 @@ $ docker run -v `pwd`../../../../:/JetBrainsRuntime -it 942ea9900054
 # cd /JetBrainsRuntime
 # sh ./configure
 # make images CONF=linux-x86_64-normal-server-release
+
 ```
 
 ## Linux (Ubuntu 18.10 desktop)
@@ -48,33 +56,35 @@ $ make images
 
 ## Windows
 Install:
+
 * [Cygwin x64](http://www.cygwin.com/)  
   Required packages: autoconf, binutils, cpio, diffutils, file, gawk, gcc-core, make, m4, unzip, zip.  
-  **Install them while installing Cygwin**.
+  **Install them while installing cygwin**.
 * Visual Studio compiler toolset [Download](https://visualstudio.microsoft.com/downloads/)  
   Visual Studio 2015 has support by default.  
   **Install with desktop development kit, it includes Windows SDK and compilers**.
 * [Java 11](http://www.oracle.com/technetwork/java/javase/downloads/index.html)  
-  If you have problems while configuring [read Java tips on Cygwin](http://horstmann.com/articles/cygwin-tips.html)
+  If you have problems while configuring [read java tips on cygwin](http://horstmann.com/articles/cygwin-tips.html)
 
-From command line: 
+From command line 
 ```
 "c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64
 "c:\Program_Files\cygwin64\bin\mintty.exe" /bin/bash -l
 ```
-First command will set env vars, the second will run Cygwin shell with proper environment.  
-
-In Cygwin shell: 
+First command will set env vars, the second will run cygwin shell with proper environment.  
+In cygwin shell 
 ```    
 cd JetBrainsRuntime
 bash configure --enable-option-checking=fatal --with-toolchain-version=2015 --with-boot-jdk="/cygdrive/c/Program Files/Java/jdk-11.0.5" --disable-warnings-as-errors
 make images
 ```
 
-## macOS
-Install Xcode command line developer tools, autoconf (via Homebrew).
+## OSX
+
+install Xcode console tools, autoconf (via homebrew)
+
+run
 
-Run:
 ```
 sh ./configure --prefix=$(pwd)/build  --disable-warnings-as-errors
 make images

doc/building.html

@@ -68,12 +68,10 @@
 </ul></li>
 <li><a href="#running-tests">Running Tests</a></li>
 <li><a href="#cross-compiling">Cross-compiling</a><ul>
-<li><a href="#cross-compiling-the-easy-way-with-openjdk-devkits">Cross compiling the easy way with OpenJDK devkits</a></li>
 <li><a href="#boot-jdk-and-build-jdk">Boot JDK and Build JDK</a></li>
 <li><a href="#specifying-the-target-platform">Specifying the Target Platform</a></li>
 <li><a href="#toolchain-considerations">Toolchain Considerations</a></li>
 <li><a href="#native-libraries">Native Libraries</a></li>
-<li><a href="#creating-and-using-sysroots-with-qemu-deboostrap">Creating And Using Sysroots With qemu-deboostrap</a></li>
 <li><a href="#building-for-armaarch64">Building for ARM/aarch64</a></li>
 <li><a href="#verifying-the-build">Verifying the Build</a></li>
 </ul></li>
@@ -567,47 +565,6 @@ CC: Sun C++ 5.13 SunOS_i386 151846-10 2015/10/30</code></pre>
 <p>This requires a more complex setup and build procedure. This section assumes you are familiar with cross-compiling in general, and will only deal with the particularities of cross-compiling the JDK. If you are new to cross-compiling, please see the <a href="https://en.wikipedia.org/wiki/Cross_compiler#External_links">external links at Wikipedia</a> for a good start on reading materials.</p>
 <p>Cross-compiling the JDK requires you to be able to build both for the build platform and for the target platform. The reason for the former is that we need to build and execute tools during the build process, both native tools and Java tools.</p>
 <p>If all you want to do is to compile a 32-bit version, for the same OS, on a 64-bit machine, consider using <code>--with-target-bits=32</code> instead of doing a full-blown cross-compilation. (While this surely is possible, it's a lot more work and will take much longer to build.)</p>
-<h3 id="cross-compiling-the-easy-way-with-openjdk-devkits">Cross compiling the easy way with OpenJDK devkits</h3>
-<p>The OpenJDK build system provides out-of-the box support for creating and using so called devkits. A <code>devkit</code> is basically a collection of a cross-compiling toolchain and a sysroot environment which can easily be used together with the <code>--with-devkit</code> configure option to cross compile the OpenJDK. On Linux/x86_64, the following command:</p>
-<pre><code>bash configure --with-devkit=&lt;devkit-path&gt; --openjdk-target=ppc64-linux-gnu &amp;&amp; make</code></pre>
-<p>will configure and build OpenJDK for Linux/ppc64 assuming that <code>&lt;devkit-path&gt;</code> points to a Linux/x86_64 to Linux/ppc64 devkit.</p>
-<p>Devkits can be created from the <code>make/devkit</code> directory by executing:</p>
-<pre><code>make [ TARGETS=&quot;&lt;TARGET_TRIPLET&gt;+&quot; ] [ BASE_OS=&lt;OS&gt; ] [ BASE_OS_VERSION=&lt;VER&gt; ]</code></pre>
-<p>where <code>TARGETS</code> contains one or more <code>TARGET_TRIPLET</code>s of the form described in <a href="https://sourceware.org/autobook/autobook/autobook_17.html">section 3.4 of the GNU Autobook</a>. If no targets are given, a native toolchain for the current platform will be created. Currently, at least the following targets are known to work:</p>
-<table>
-<thead>
-<tr class="header">
-<th style="text-align: left;">Supported devkit targets</th>
-</tr>
-</thead>
-<tbody>
-<tr class="odd">
-<td style="text-align: left;">x86_64-linux-gnu</td>
-</tr>
-<tr class="even">
-<td style="text-align: left;">aarch64-linux-gnu</td>
-</tr>
-<tr class="odd">
-<td style="text-align: left;">arm-linux-gnueabihf</td>
-</tr>
-<tr class="even">
-<td style="text-align: left;">ppc64-linux-gnu</td>
-</tr>
-<tr class="odd">
-<td style="text-align: left;">ppc64le-linux-gnu</td>
-</tr>
-<tr class="even">
-<td style="text-align: left;">s390x-linux-gnu</td>
-</tr>
-</tbody>
-</table>
-<p><code>BASE_OS</code> must be one of &quot;OEL6&quot; for Oracle Enterprise Linux 6 or &quot;Fedora&quot; (if not specified &quot;OEL6&quot; will be the default). If the base OS is &quot;Fedora&quot; the corresponding Fedora release can be specified with the help of the <code>BASE_OS_VERSION</code> option (with &quot;27&quot; as default version). If the build is successful, the new devkits can be found in the <code>build/devkit/result</code> subdirectory:</p>
-<pre><code>cd make/devkit
-make TARGETS=&quot;ppc64le-linux-gnu aarch64-linux-gnu&quot; BASE_OS=Fedora BASE_OS_VERSION=21
-ls -1 ../../build/devkit/result/
-x86_64-linux-gnu-to-aarch64-linux-gnu
-x86_64-linux-gnu-to-ppc64le-linux-gnu</code></pre>
-<p>Notice that devkits are not only useful for targeting different build platforms. Because they contain the full build dependencies for a system (i.e. compiler and root file system), they can easily be used to build well-known, reliable and reproducible build environments. You can for example create and use a devkit with GCC 7.3 and a Fedora 12 sysroot environment (with glibc 2.11) on Ubuntu 14.04 (which doesn't have GCC 7.3 by default) to produce OpenJDK binaries which will run on all Linux systems with runtime libraries newer than the ones from Fedora 12 (e.g. Ubuntu 16.04, SLES 11 or RHEL 6).</p>
 <h3 id="boot-jdk-and-build-jdk">Boot JDK and Build JDK</h3>
 <p>When cross-compiling, make sure you use a boot JDK that runs on the <em>build</em> system, and not on the <em>target</em> system.</p>
 <p>To be able to build, we need a &quot;Build JDK&quot;, which is a JDK built from the current sources (that is, the same as the end result of the entire build process), but able to run on the <em>build</em> system, and not the <em>target</em> system. (In contrast, the Boot JDK should be from an older release, e.g. JDK 8 when building JDK 9.)</p>
@@ -677,72 +634,6 @@ cp: cannot stat `arm-linux-gnueabihf/libSM.so&#39;: No such file or directory
 cp: cannot stat `arm-linux-gnueabihf/libXt.so&#39;: No such file or directory</code></pre></li>
 <li><p>If the X11 libraries are not properly detected by <code>configure</code>, you can point them out by <code>--with-x</code>.</p></li>
 </ul>
-<h3 id="creating-and-using-sysroots-with-qemu-deboostrap">Creating And Using Sysroots With qemu-deboostrap</h3>
-<p>Fortunately, you can create sysroots for foreign architectures with tools provided by your OS. On Debian/Ubuntu systems, one could use <code>qemu-deboostrap</code> to create the <em>target</em> system chroot, which would have the native libraries and headers specific to that <em>target</em> system. After that, we can use the cross-compiler on the <em>build</em> system, pointing into chroot to get the build dependencies right. This allows building for foreign architectures with native compilation speed.</p>
-<p>For example, cross-compiling to AArch64 from x86_64 could be done like this:</p>
-<ul>
-<li><p>Install cross-compiler on the <em>build</em> system:</p>
-<pre><code>apt install g++-aarch64-linux-gnu gcc-aarch64-linux-gnu</code></pre></li>
-<li><p>Create chroot on the <em>build</em> system, configuring it for <em>target</em> system:</p>
-<pre><code>sudo qemu-debootstrap --arch=arm64 --verbose \
-   --include=fakeroot,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng12-dev \
-   --resolve-deps jessie /chroots/arm64 http://httpredir.debian.org/debian/</code></pre></li>
-<li><p>Configure and build with newly created chroot as sysroot/toolchain-path:</p>
-<pre><code>CC=aarch64-linux-gnu-gcc CXX=aarch64-linux-gnu-g++ sh ./configure --openjdk-target=aarch64-linux-gnu --with-sysroot=/chroots/arm64/ --with-toolchain-path=/chroots/arm64/
-make images
-ls build/linux-aarch64-normal-server-release/</code></pre></li>
-</ul>
-<p>The build does not create new files in that chroot, so it can be reused for multiple builds without additional cleanup.</p>
-<p>Architectures that are known to successfully cross-compile like this are:</p>
-<table>
-<thead>
-<tr class="header">
-<th style="text-align: left;">Target</th>
-<th style="text-align: left;"><code>CC</code></th>
-<th style="text-align: left;"><code>CXX</code></th>
-<th style="text-align: left;"><code>--arch=...</code></th>
-<th style="text-align: left;"><code>--openjdk-target=...</code></th>
-</tr>
-</thead>
-<tbody>
-<tr class="odd">
-<td style="text-align: left;">x86</td>
-<td style="text-align: left;">default</td>
-<td style="text-align: left;">default</td>
-<td style="text-align: left;">i386</td>
-<td style="text-align: left;">i386-linux-gnu</td>
-</tr>
-<tr class="even">
-<td style="text-align: left;">armhf</td>
-<td style="text-align: left;">gcc-arm-linux-gnueabihf</td>
-<td style="text-align: left;">g++-arm-linux-gnueabihf</td>
-<td style="text-align: left;">armhf</td>
-<td style="text-align: left;">arm-linux-gnueabihf</td>
-</tr>
-<tr class="odd">
-<td style="text-align: left;">aarch64</td>
-<td style="text-align: left;">gcc-aarch64-linux-gnu</td>
-<td style="text-align: left;">g++-aarch64-linux-gnu</td>
-<td style="text-align: left;">arm64</td>
-<td style="text-align: left;">aarch64-linux-gnu</td>
-</tr>
-<tr class="even">
-<td style="text-align: left;">ppc64el</td>
-<td style="text-align: left;">gcc-powerpc64le-linux-gnu</td>
-<td style="text-align: left;">g++-powerpc64le-linux-gnu</td>
-<td style="text-align: left;">ppc64el</td>
-<td style="text-align: left;">powerpc64le-linux-gnu</td>
-</tr>
-<tr class="odd">
-<td style="text-align: left;">s390x</td>
-<td style="text-align: left;">gcc-s390x-linux-gnu</td>
-<td style="text-align: left;">g++-s390x-linux-gnu</td>
-<td style="text-align: left;">s390x</td>
-<td style="text-align: left;">s390x-linux-gnu</td>
-</tr>
-</tbody>
-</table>
-<p>Additional architectures might be supported by Debian/Ubuntu Ports.</p>
 <h3 id="building-for-armaarch64">Building for ARM/aarch64</h3>
 <p>A common cross-compilation target is the ARM CPU. When building for ARM, it is useful to set the ABI profile. A number of pre-defined ABI profiles are available using <code>--with-abi-profile</code>: arm-vfp-sflt, arm-vfp-hflt, arm-sflt, armv5-vfp-sflt, armv6-vfp-hflt. Note that soft-float ABIs are no longer properly supported by the JDK.</p>
 <p>The JDK contains two different ports for the aarch64 platform, one is the original aarch64 port from the <a href="http://openjdk.java.net/projects/aarch64-port">AArch64 Port Project</a> and one is a 64-bit version of the Oracle contributed ARM port. When targeting aarch64, by the default the original aarch64 port is used. To select the Oracle ARM 64 port, use <code>--with-cpu-port=arm64</code>. Also set the corresponding value (<code>aarch64</code> or <code>arm64</code>) to --with-abi-profile, to ensure a consistent build.</p>
@@ -852,12 +743,7 @@ cannot create ... Permission denied
 spawn failed</code></pre>
 <p>This can be a sign of a Cygwin problem. See the information about solving problems in the <a href="#cygwin">Cygwin</a> section. Rebooting the computer might help temporarily.</p>
 <h3 id="getting-help">Getting Help</h3>
-<p>If none of the suggestions in this document helps you, or if you find what you believe is a bug in the build system, please contact the Build Group by sending a mail to <script type="text/javascript">
-<!--
-h='&#x6f;&#112;&#x65;&#110;&#106;&#100;&#x6b;&#46;&#106;&#x61;&#118;&#x61;&#46;&#110;&#x65;&#116;';a='&#64;';n='&#98;&#x75;&#x69;&#108;&#100;&#x2d;&#100;&#x65;&#118;';e=n+a+h;
-document.write('<a h'+'ref'+'="ma'+'ilto'+':'+e+'" clas'+'s="em' + 'ail">'+e+'<\/'+'a'+'>');
-// -->
-</script><noscript>&#98;&#x75;&#x69;&#108;&#100;&#x2d;&#100;&#x65;&#118;&#32;&#x61;&#116;&#32;&#x6f;&#112;&#x65;&#110;&#106;&#100;&#x6b;&#32;&#100;&#x6f;&#116;&#32;&#106;&#x61;&#118;&#x61;&#32;&#100;&#x6f;&#116;&#32;&#110;&#x65;&#116;</noscript>. Please include the relevant parts of the configure and/or build log.</p>
+<p>If none of the suggestions in this document helps you, or if you find what you believe is a bug in the build system, please contact the Build Group by sending a mail to <a href="mailto:build-dev@openjdk.java.net">build-dev@openjdk.java.net</a>. Please include the relevant parts of the configure and/or build log.</p>
 <p>If you need general help or advice about developing for the JDK, you can also contact the Adoption Group. See the section on <a href="#contributing-to-openjdk">Contributing to OpenJDK</a> for more information.</p>
 <h2 id="hints-and-suggestions-for-advanced-users">Hints and Suggestions for Advanced Users</h2>
 <h3 id="setting-up-a-forest-for-pushing-changes-defpath">Setting Up a Forest for Pushing Changes (defpath)</h3>

doc/building.md

@@ -875,64 +875,6 @@ If all you want to do is to compile a 32-bit version, for the same OS, on a
 full-blown cross-compilation. (While this surely is possible, it's a lot more
 work and will take much longer to build.)
 
-### Cross compiling the easy way with OpenJDK devkits
-
-The OpenJDK build system provides out-of-the box support for creating and using
-so called devkits. A `devkit` is basically a collection of a cross-compiling
-toolchain and a sysroot environment which can easily be used together with the
-`--with-devkit` configure option to cross compile the OpenJDK. On Linux/x86_64,
-the following command:
-```
-bash configure --with-devkit=<devkit-path> --openjdk-target=ppc64-linux-gnu && make
-```
-
-will configure and build OpenJDK for Linux/ppc64 assuming that `<devkit-path>`
-points to a Linux/x86_64 to Linux/ppc64 devkit.
-
-Devkits can be created from the `make/devkit` directory by executing:
-```
-make [ TARGETS="<TARGET_TRIPLET>+" ] [ BASE_OS=<OS> ] [ BASE_OS_VERSION=<VER> ]
-```
-
-where `TARGETS` contains one or more `TARGET_TRIPLET`s of the form
-described in [section 3.4 of the GNU Autobook](
-https://sourceware.org/autobook/autobook/autobook_17.html). If no
-targets are given, a native toolchain for the current platform will be
-created. Currently, at least the following targets are known to work:
-
- Supported devkit targets
- ------------------------
- x86_64-linux-gnu
- aarch64-linux-gnu
- arm-linux-gnueabihf
- ppc64-linux-gnu
- ppc64le-linux-gnu
- s390x-linux-gnu
-
-`BASE_OS` must be one of "OEL6" for Oracle Enterprise Linux 6 or
-"Fedora" (if not specified "OEL6" will be the default). If the base OS
-is "Fedora" the corresponding Fedora release can be specified with the
-help of the `BASE_OS_VERSION` option (with "27" as default version).
-If the build is successful, the new devkits can be found in the
-`build/devkit/result` subdirectory:
-```
-cd make/devkit
-make TARGETS="ppc64le-linux-gnu aarch64-linux-gnu" BASE_OS=Fedora BASE_OS_VERSION=21
-ls -1 ../../build/devkit/result/
-x86_64-linux-gnu-to-aarch64-linux-gnu
-x86_64-linux-gnu-to-ppc64le-linux-gnu
-```
-
-Notice that devkits are not only useful for targeting different build
-platforms. Because they contain the full build dependencies for a
-system (i.e. compiler and root file system), they can easily be used
-to build well-known, reliable and reproducible build environments. You
-can for example create and use a devkit with GCC 7.3 and a Fedora 12
-sysroot environment (with glibc 2.11) on Ubuntu 14.04 (which doesn't
-have GCC 7.3 by default) to produce OpenJDK binaries which will run on
-all Linux systems with runtime libraries newer than the ones from
-Fedora 12 (e.g. Ubuntu 16.04, SLES 11 or RHEL 6).
-
 ### Boot JDK and Build JDK
 
 When cross-compiling, make sure you use a boot JDK that runs on the *build*
@@ -1076,51 +1018,6 @@ Note that X11 is needed even if you only want to build a headless JDK.
   * If the X11 libraries are not properly detected by `configure`, you can
     point them out by `--with-x`.
 
-### Creating And Using Sysroots With qemu-deboostrap
-
-Fortunately, you can create sysroots for foreign architectures with tools
-provided by your OS. On Debian/Ubuntu systems, one could use `qemu-deboostrap` to
-create the *target* system chroot, which would have the native libraries and headers
-specific to that *target* system. After that, we can use the cross-compiler on the *build*
-system, pointing into chroot to get the build dependencies right. This allows building
-for foreign architectures with native compilation speed.
-
-For example, cross-compiling to AArch64 from x86_64 could be done like this:
-
-  * Install cross-compiler on the *build* system:
-```
-apt install g++-aarch64-linux-gnu gcc-aarch64-linux-gnu
-```
-
-  * Create chroot on the *build* system, configuring it for *target* system:
-```
-sudo qemu-debootstrap --arch=arm64 --verbose \
-       --include=fakeroot,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng12-dev \
-       --resolve-deps jessie /chroots/arm64 http://httpredir.debian.org/debian/
-```
-
-  * Configure and build with newly created chroot as sysroot/toolchain-path:
-```
-CC=aarch64-linux-gnu-gcc CXX=aarch64-linux-gnu-g++ sh ./configure --openjdk-target=aarch64-linux-gnu --with-sysroot=/chroots/arm64/ --with-toolchain-path=/chroots/arm64/
-make images
-ls build/linux-aarch64-normal-server-release/
-```
-
-The build does not create new files in that chroot, so it can be reused for multiple builds
-without additional cleanup.
-
-Architectures that are known to successfully cross-compile like this are:
-
-  Target        `CC`                      `CXX`                       `--arch=...` `--openjdk-target=...`
-  ------------  ------------------------- --------------------------- ------------ ----------------------
-  x86           default                   default                     i386         i386-linux-gnu
-  armhf         gcc-arm-linux-gnueabihf   g++-arm-linux-gnueabihf     armhf        arm-linux-gnueabihf
-  aarch64       gcc-aarch64-linux-gnu     g++-aarch64-linux-gnu       arm64        aarch64-linux-gnu
-  ppc64el       gcc-powerpc64le-linux-gnu g++-powerpc64le-linux-gnu   ppc64el      powerpc64le-linux-gnu
-  s390x         gcc-s390x-linux-gnu       g++-s390x-linux-gnu         s390x        s390x-linux-gnu
-
-Additional architectures might be supported by Debian/Ubuntu Ports.
-
 ### Building for ARM/aarch64
 
 A common cross-compilation target is the ARM CPU. When building for ARM, it is

jb/project/docker/Dockerfile

@@ -4,9 +4,9 @@ RUN yum -y install centos-release-scl
 RUN yum -y install devtoolset-8
 RUN yum -y install zip bzip2 unzip tar wget make autoconf automake libtool alsa-devel cups-devel xorg-x11-devel libjpeg62-devel giflib-devel freetype-devel file which libXtst-devel libXt-devel libXrender-devel alsa-lib-devel fontconfig-devel libXrandr-devel libXi-devel git
 # Install Java 11
-RUN wget https://cdn.azul.com/zulu/bin/zulu11.45.27-ca-jdk11.0.10-linux_x64.tar.gz \
+RUN wget https://bintray.com/jetbrains/intellij-jbr/download_file?file_path=jbrsdk-11_0_3-linux-x64-b360.2.tar.gz \
 -O - | tar xz -C /
-ENV JAVA_HOME /zulu11.45.27-ca-jdk11.0.10-linux_x64
+ENV JAVA_HOME /jbrsdk
 ENV PATH $JAVA_HOME/bin:/opt/rh/devtoolset-8/root/usr/bin:$PATH
 RUN git config --global user.email "teamcity@buildserver.intellij.net"
 RUN git config --global user.name "builduser"

jb/project/tools/linux/scripts/mkimages_aarch64.sh

@@ -6,6 +6,7 @@
 #   build_number     - specifies the number of JetBrainsRuntime build
 #   bundle_type      - specifies bundle to bu built; possible values:
 #                        jcef - the bundles 1) jbr with jcef+javafx, 2) jbrsdk and 3) test will be created
+#                        jfx  - the bundle 1) jbr with javafx only will be created
 #
 # jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
 # jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
@@ -31,7 +32,6 @@ sh configure \
   --with-debug-level=release \
   --with-vendor-name="${VENDOR_NAME}" \
   --with-vendor-version-string="${VENDOR_VERSION_STRING}" \
-  --with-jvm-features=shenandoahgc \
   --with-version-pre= \
   --with-version-build=${JDK_BUILD_NUMBER} \
   --with-version-opt=b${build_number} \

jb/project/tools/linux/scripts/mkimages_x64.sh

@@ -6,6 +6,8 @@
 #   build_number     - specifies the number of JetBrainsRuntime build
 #   bundle_type      - specifies bundle to be built; possible values:
 #                        jcef - the release bundles with jcef
+#                        jfx - the release bundles with javafx
+#                        jcef_jfx - the release bundles with jcef and javafx
 #                        dcevm - the release bundles with dcevm patches
 #                        nomod - the release bundles without any additional modules (jcef)
 #                        fd - the fastdebug bundles which also include the jcef module
@@ -39,9 +41,12 @@ function create_jbr {
   JBR_BUNDLE=jbr_${bundle_type}
 
   case "${bundle_type}" in
-  "jcef" | "dcevm" | "nomod" | "fd")
+  "jfx" | "jcef" | "dcevm" | "nomod" | "fd")
     JBR_BASE_NAME=jbr_${bundle_type}-${JBSDK_VERSION}
     ;;
+  "jfx_jcef")
+    JBR_BASE_NAME=jbr-${JBSDK_VERSION}
+    ;;
   *)
     echo "***ERR*** bundle was not specified" && do_exit 1
     ;;
@@ -58,7 +63,7 @@ function create_jbr {
 
   if [[ "${bundle_type}" == *jcef* ]] || [[ "${bundle_type}" == *dcevm* ]] || [[ "${bundle_type}" == fd ]]; then
     cp -R $BASE_DIR/$JBR_BUNDLE $BASE_DIR/jbr
-    rsync -av ${JCEF_PATH}/ $BASE_DIR/$JBR_BUNDLE/lib --exclude="modular-sdk" || do_exit $?
+    cp -R ${JCEF_PATH}/* $BASE_DIR/$JBR_BUNDLE/lib || exit $?
   fi
   grep -v "^JAVA_VERSION" $JSDK/release | grep -v "^MODULES" >> $BASE_DIR/$JBR_BUNDLE/release
 
@@ -75,10 +80,19 @@ WITH_DEBUG_LEVEL="--with-debug-level=release"
 RELEASE_NAME=linux-x86_64-normal-server-release
 JBSDK=${JBRSDK_BASE_NAME}-linux-x64-b${build_number}
 case "$bundle_type" in
+  "jfx")
+    git apply -p0 < jb/project/tools/patches/add_jfx_module.patch || do_exit $?
+    do_reset_changes=1
+    ;;
   "jcef")
     git apply -p0 < jb/project/tools/patches/add_jcef_module.patch || do_exit $?
     do_reset_changes=1
     ;;
+  "jfx_jcef")
+    git apply -p0 < jb/project/tools/patches/add_jfx_module.patch || do_exit $?
+    git apply -p0 < jb/project/tools/patches/add_jcef_module.patch || do_exit $?
+    do_reset_changes=1
+    ;;
   "dcevm")
     HEAD_REVISION=$(git rev-parse HEAD)
     git am jb/project/tools/patches/dcevm/*.patch || do_exit $?
@@ -106,7 +120,6 @@ sh configure \
   $WITH_DEBUG_LEVEL \
   --with-vendor-name="${VENDOR_NAME}" \
   --with-vendor-version-string="${VENDOR_VERSION_STRING}" \
-  --with-jvm-features=shenandoahgc \
   --with-version-pre= \
   --with-version-build=${JDK_BUILD_NUMBER} \
   --with-version-opt=b${build_number} \
@@ -127,7 +140,7 @@ rm -rf ${BASE_DIR}/${JBRSDK_BUNDLE}
 cp -r $JSDK $BASE_DIR/$JBRSDK_BUNDLE || do_exit $?
 
 if [[ "${bundle_type}" == *jcef* ]] || [[ "${bundle_type}" == *dcevm* ]] || [[ "${bundle_type}" == fd ]]; then
-  rsync -av ${JCEF_PATH}/ $BASE_DIR/$JBRSDK_BUNDLE/lib --exclude="modular-sdk" || do_exit $?
+  cp -R ${JCEF_PATH}/* $BASE_DIR/$JBRSDK_BUNDLE/lib || do_exit $?
 fi
 if [ "${bundle_type}" == "jcef" ] || [ "${bundle_type}" == "fd" ]; then
   echo Creating $JBSDK.tar.gz ...

jb/project/tools/linux/scripts/mkimages_x86.sh

@@ -6,6 +6,7 @@
 #   build_number     - specifies the number of JetBrainsRuntime build
 #   bundle_type      - specifies bundle to bu built; possible values:
 #                        jcef - the bundles 1) jbr with jcef+javafx, 2) jbrsdk and 3) test will be created
+#                        jfx  - the bundle 1) jbr with javafx only will be created
 #
 # jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
 # jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
@@ -31,7 +32,6 @@ linux32 bash configure \
   --with-debug-level=release \
   --with-vendor-name="${VENDOR_NAME}" \
   --with-vendor-version-string="${VENDOR_VERSION_STRING}" \
-  --with-jvm-features=shenandoahgc \
   --with-version-pre= \
   --with-version-build=$JDK_BUILD_NUMBER \
   --with-version-opt=b${build_number} \

jb/project/tools/mac/scripts/mkimages.sh

@@ -6,6 +6,8 @@
 #   build_number     - specifies the number of JetBrainsRuntime build
 #   bundle_type      - specifies bundle to be built; possible values:
 #                        jcef - the release bundles with jcef
+#                        jfx - the release bundles with javafx
+#                        jcef_jfx - the release bundles with jcef and javafx
 #                        dcevm - the release bundles with dcevm patches
 #                        nomod - the release bundles without any additional modules (jcef)
 #                        fd - the fastdebug bundles which also include the jcef module
@@ -28,41 +30,28 @@ JBSDK_VERSION=$1
 JDK_BUILD_NUMBER=$2
 build_number=$3
 bundle_type=$4
-architecture=$5 # aarch64 or x64
-enable_aot=$6 # temporary param for building test jre with aot under aarch64
 JBSDK_VERSION_WITH_DOTS=$(echo $JBSDK_VERSION | sed 's/_/\./g')
 WITH_IMPORT_MODULES="--with-import-modules=${MODULAR_SDK_PATH:=./modular-sdk}"
 JCEF_PATH=${JCEF_PATH:=./jcef_mac}
-architecture=${architecture:=x64}
 
 source jb/project/tools/common.sh
 
-function copyJNF {
-  __contents_dir=$1
-    mkdir -p ${__contents_dir}/Frameworks
-    cp -Rp Frameworks/JavaNativeFoundation.framework ${__contents_dir}/Frameworks
-}
 function create_jbr {
 
   JBR_BUNDLE=jbr_${bundle_type}
 
   case "${bundle_type}" in
-  "jcef" | "dcevm" | "nomod" | "fd")
+  "jfx" | "jcef" | "dcevm" | "nomod" | "fd")
     JBR_BASE_NAME=jbr_${bundle_type}-${JBSDK_VERSION}
     ;;
+  "jfx_jcef")
+    JBR_BASE_NAME=jbr-${JBSDK_VERSION}
+    ;;
   *)
     echo "***ERR*** bundle was not specified" && do_exit 1
     ;;
   esac
-  if [[ "${architecture}" == *aarch64* ]] && [[ "${enable_aot}" != *enable_aot* ]]; then
-    # aot isn't supported yet, so remove dependent modules
-    echo "Exclude jdk.internal.vm.compiler and jdk.aot (because aot not supported yet)"
-    cat modules.list | \
-      grep -v "jdk.internal.vm.compiler\|jdk.aot" \
-      > modules_tmp.list
-  else
-    cat modules.list > modules_tmp.list
-  fi
+  cat modules.list > modules_tmp.list
   rm -rf ${BASE_DIR}/${JBR_BUNDLE}
 
   JRE_CONTENTS=${BASE_DIR}/${JBR_BUNDLE}/Contents
@@ -72,7 +61,7 @@ function create_jbr {
   fi
   mkdir -p ${JRE_CONTENTS}
 
-  JBR=${JBR_BASE_NAME}-osx-${architecture}-b${build_number}
+  JBR=${JBR_BASE_NAME}-osx-x64-b${build_number}
 
   echo Running jlink....
   ${BASE_DIR}/$JBRSDK_BUNDLE/Contents/Home/bin/jlink \
@@ -82,38 +71,36 @@ function create_jbr {
   cp -R ${BASE_DIR}/${JBRSDK_BUNDLE}/Contents/MacOS ${JRE_CONTENTS}
   cp ${BASE_DIR}/${JBRSDK_BUNDLE}/Contents/Info.plist ${JRE_CONTENTS}
 
-  rm -rf ${JRE_CONTENTS}/Frameworks || do_exit $?
-  if [[ "${architecture}" == *aarch64* ]]; then
-    # we can't notarize this library as usual framework (with headers and tbd-file)
-    # but single library notarizes correctly
-    copyJNF ${JRE_CONTENTS}
-  fi
   if [[ "${bundle_type}" == *jcef* ]] || [[ "${bundle_type}" == *dcevm* ]] || [[ "${bundle_type}" == fd ]]; then
+    rm -rf ${JRE_CONTENTS}/Frameworks || do_exit $?
     cp -a ${JCEF_PATH}/Frameworks ${JRE_CONTENTS} || do_exit $?
   fi
 
   echo Creating ${JBR}.tar.gz ...
   rm -rf ${BASE_DIR}/jbr
   cp -R ${BASE_DIR}/${JBR_BUNDLE} ${BASE_DIR}/jbr
-
   COPYFILE_DISABLE=1 tar -pczf ${JBR}.tar.gz --exclude='*.dSYM' --exclude='man' -C ${BASE_DIR} jbr || do_exit $?
   rm -rf ${BASE_DIR}/${JBR_BUNDLE}
 }
 
 JBRSDK_BASE_NAME=jbrsdk-${JBSDK_VERSION}
 WITH_DEBUG_LEVEL="--with-debug-level=release"
-CONF_ARCHITECTURE=x86_64
-if [[ "${architecture}" == *aarch64* ]]; then
-  CONF_ARCHITECTURE=aarch64
-fi
-CONF_NAME=macosx-${CONF_ARCHITECTURE}-normal-server-release
-
-JBSDK=${JBRSDK_BASE_NAME}-osx-${architecture}-b${build_number}
+RELEASE_NAME=macosx-x86_64-normal-server-release
+JBSDK=${JBRSDK_BASE_NAME}-osx-x64-b${build_number}
 case "$bundle_type" in
+  "jfx")
+    git apply -p0 < jb/project/tools/patches/add_jfx_module.patch || do_exit $?
+    do_reset_changes=1
+    ;;
   "jcef")
     git apply -p0 < jb/project/tools/patches/add_jcef_module.patch || do_exit $?
     do_reset_changes=1
     ;;
+  "jfx_jcef")
+    git apply -p0 < jb/project/tools/patches/add_jfx_module.patch || do_exit $?
+    git apply -p0 < jb/project/tools/patches/add_jcef_module.patch || do_exit $?
+    do_reset_changes=1
+    ;;
   "dcevm")
     HEAD_REVISION=$(git rev-parse HEAD)
     git am jb/project/tools/patches/dcevm/*.patch || do_exit $?
@@ -128,56 +115,30 @@ case "$bundle_type" in
     git apply -p0 < jb/project/tools/patches/add_jcef_module.patch || do_exit $?
     do_reset_changes=1
     WITH_DEBUG_LEVEL="--with-debug-level=fastdebug"
-    CONF_NAME=macosx-${CONF_ARCHITECTURE}-normal-server-fastdebug
-    JBSDK=${JBRSDK_BASE_NAME}-osx-${architecture}-fastdebug-b${build_number}
+    RELEASE_NAME=macosx-x86_64-normal-server-fastdebug
+    JBSDK=${JBRSDK_BASE_NAME}-osx-x64-fastdebug-b${build_number}
     ;;
   *)
     echo "***ERR*** bundle was not specified" && do_exit 1
     ;;
 esac
 
-if [[ "${architecture}" == *aarch64* ]]; then
-  # NOTE: aot, cds aren't supported yet
-  WITH_JVM_FEATURES="--with-jvm-features=-aot"
-  if [[ "${enable_aot}" == *enable_aot* ]]; then
-    echo "Enable unstable jvm feature: AOT"
-    WITH_JVM_FEATURES=""
-  fi
-  sh configure \
+sh configure \
   --disable-warnings-as-errors \
   $WITH_DEBUG_LEVEL \
   --with-vendor-name="${VENDOR_NAME}" \
   --with-vendor-version-string="${VENDOR_VERSION_STRING}" \
-  --with-jvm-features=shenandoahgc \
   --with-version-pre= \
   --with-version-build=${JDK_BUILD_NUMBER} \
   --with-version-opt=b${build_number} \
   $WITH_IMPORT_MODULES \
   --with-boot-jdk=`/usr/libexec/java_home -v 11` \
-  --disable-hotspot-gtest --disable-javac-server --disable-full-docs --disable-manpages \
-  --enable-cds=no \
-  $WITH_JVM_FEATURES \
-  --with-extra-cflags="-F$(pwd)/Frameworks" \
-  --with-extra-cxxflags="-F$(pwd)/Frameworks" \
-  --with-extra-ldflags="-F$(pwd)/Frameworks" || do_exit $?
-else
-  sh configure \
-    --disable-warnings-as-errors \
-    $WITH_DEBUG_LEVEL \
-    --with-vendor-name="${VENDOR_NAME}" \
-    --with-vendor-version-string="${VENDOR_VERSION_STRING}" \
-    --with-version-pre= \
-    --with-version-build=${JDK_BUILD_NUMBER} \
-    --with-version-opt=b${build_number} \
-    $WITH_IMPORT_MODULES \
-    --with-boot-jdk=`/usr/libexec/java_home -v 11` \
-    --enable-cds=yes || do_exit $?
-fi
+  --enable-cds=yes || do_exit $?
 
-make clean CONF=$CONF_NAME || do_exit $?
-make images CONF=$CONF_NAME || do_exit $?
+make clean CONF=$RELEASE_NAME || do_exit $?
+make images CONF=$RELEASE_NAME || do_exit $?
 
-JSDK=build/${CONF_NAME}/images/jdk-bundle
+JSDK=build/${RELEASE_NAME}/images/jdk-bundle
 
 BASE_DIR=jre
 JBRSDK_BUNDLE=jbrsdk
@@ -185,19 +146,17 @@ JBRSDK_BUNDLE=jbrsdk
 rm -rf $BASE_DIR
 mkdir $BASE_DIR || do_exit $?
 cp -a $JSDK/jdk-$JBSDK_VERSION_WITH_DOTS.jdk $BASE_DIR/$JBRSDK_BUNDLE || do_exit $?
-if [[ "${bundle_type}" == *jcef* ]] || [[ "${bundle_type}" == *dcevm* ]] || [[ "${bundle_type}" == fd ]]; then
+
+  if [[ "${bundle_type}" == *jcef* ]] || [[ "${bundle_type}" == *dcevm* ]] || [[ "${bundle_type}" == fd ]]; then
   cp -a ${JCEF_PATH}/Frameworks $BASE_DIR/$JBRSDK_BUNDLE/Contents/
 fi
-if [ "${bundle_type}" == "jcef" ] || [ "${bundle_type}" == "fd" ]; then
+if [ "${bundle_type}" == "jcef" ] || [ "{$bundle_type}" == "fd" ]; then
   echo Creating $JBSDK.tar.gz ...
-  if [[ "${architecture}" == *aarch64* ]]; then
-    copyJNF $BASE_DIR/$JBRSDK_BUNDLE/Contents
-  fi
   sed 's/JBR/JBRSDK/g' ${BASE_DIR}/${JBRSDK_BUNDLE}/Contents/Home/release > release
   mv release ${BASE_DIR}/${JBRSDK_BUNDLE}/Contents/Home/release
   [ -f "${JBSDK}.tar.gz" ] && rm "${JBSDK}.tar.gz"
   COPYFILE_DISABLE=1 tar -pczf ${JBSDK}.tar.gz -C ${BASE_DIR} \
-    --exclude='.DS_Store' --exclude='*~' \
+    --exclude='._*' --exclude='.DS_Store' --exclude='*~' \
     --exclude='Home/demo' --exclude='Home/man' --exclude='Home/sample' \
     ${JBRSDK_BUNDLE} || do_exit $?
 fi
@@ -205,13 +164,13 @@ fi
 create_jbr || do_exit $?
 
 if [ "$bundle_type" == "jcef" ]; then
-  make test-image CONF=$CONF_NAME || do_exit $?
+  make test-image CONF=$RELEASE_NAME || do_exit $?
 
-  JBRSDK_TEST=$JBRSDK_BASE_NAME-osx-test-${architecture}-b$build_number
+  JBRSDK_TEST=$JBRSDK_BASE_NAME-osx-test-x64-b$build_number
 
   echo Creating $JBRSDK_TEST.tar.gz ...
   [ -f "${JBRSDK_TEST}.tar.gz" ] && rm "${JBRSDK_TEST}.tar.gz"
-  COPYFILE_DISABLE=1 tar -pczf ${JBRSDK_TEST}.tar.gz -C build/${CONF_NAME}/images \
+  COPYFILE_DISABLE=1 tar -pczf ${JBRSDK_TEST}.tar.gz -C build/${RELEASE_NAME}/images \
     --exclude='test/jdk/demos' test || do_exit $?
 fi
 

jb/project/tools/mac/scripts/notarize.sh

@@ -58,7 +58,7 @@ file="$APP_NAME.zip"
 
 log "Zipping $file..."
 rm -rf "$file"
-ditto -c -k --sequesterRsrc --keepParent "$APP_DIRECTORY" "$file"
+ditto -c -k --sequesterRsrc --keepParent "$APP_DIRECTORY/Contents" "$file"
 
 log "Notarizing $file..."
 rm -rf "altool.init.out" "altool.check.out"

jb/project/tools/mac/scripts/sign.sh

@@ -26,30 +26,17 @@ log "Signing libraries and executables..."
 # -perm +111 searches for executables
 for f in \
    "Contents/Home/bin" \
-   "Contents/Home/lib"; do
+   "Contents/Home/lib" \
+   "Contents/Frameworks"; do
   if [ -d "$APP_DIRECTORY/$f" ]; then
     find "$APP_DIRECTORY/$f" \
       -type f \( -name "*.jnilib" -o -name "*.dylib" -o -name "*.so" -o -perm +111 \) \
-      -exec codesign --timestamp --force \
+      -exec codesign --timestamp \
       -v -s "$JB_CERT" --options=runtime \
       --entitlements entitlements.xml {} \;
   fi
 done
 
-if [ -d "$APP_DIRECTORY/Contents/Frameworks" ]; then
-  log "Signing frameworks..."
-  for f in $APP_DIRECTORY/Contents/Frameworks/*; do
-    find "$f" \
-      -type f \( -name "*.jnilib" -o -name "*.dylib" -o -name "*.so" \) \
-      -exec codesign --timestamp --force \
-      -v -s "$JB_CERT" \
-      --entitlements entitlements.xml {} \;
-    codesign --timestamp --force \
-      -v -s "$JB_CERT" --options=runtime \
-      --entitlements entitlements.xml "$f"
-  done
-fi
-
 log "Signing libraries in jars in $PWD"
 
 # todo: add set -euo pipefail; into the inner sh -c
@@ -68,7 +55,7 @@ find "$APP_DIRECTORY" -name '*.jar' \
 
     find jarfolder \
       -type f \( -name "*.jnilib" -o -name "*.dylib" -o -name "*.so" -o -name "jattach" \) \
-      -exec codesign --timestamp --force \
+      -exec codesign --timestamp \
       -v -s "$JB_CERT" --options=runtime \
       --entitlements entitlements.xml {} \;
 
@@ -84,7 +71,7 @@ for f in \
   if [ -d "$APP_DIRECTORY/$f" ]; then
     find "$APP_DIRECTORY/$f" \
       -type f \( -name "*.jnilib" -o -name "*.dylib" -o -name "*.so" -o -perm +111 \) \
-      -exec codesign --timestamp --force \
+      -exec codesign --timestamp \
       -v -s "$JB_CERT" --options=runtime \
       --entitlements entitlements.xml {} \;
   fi

jb/project/tools/mac/scripts/signapp.sh

@@ -1,4 +1,4 @@
-#!/bin/bash -x
+#!/bin/bash
 
 #immediately exit script with an error if a command fails
 set -euo pipefail
@@ -32,10 +32,8 @@ mkdir "$BACKUP_JMODS"
 
 log "Unzipping $INPUT_FILE to $EXPLODED ..."
 tar -xzvf "$INPUT_FILE" --directory $EXPLODED
-BUILD_NAME="$(ls "$EXPLODED")"
-sed -i '' s/BNDL/APPL/ $EXPLODED/$BUILD_NAME/Contents/Info.plist
-rm -f $EXPLODED/$BUILD_NAME/Contents/CodeResources
 rm "$INPUT_FILE"
+BUILD_NAME="$(ls "$EXPLODED")"
 if test -d $EXPLODED/$BUILD_NAME/Contents/Home/jmods; then
   mv $EXPLODED/$BUILD_NAME/Contents/Home/jmods $BACKUP_JMODS
 fi
@@ -127,8 +125,8 @@ log "Zipping $BUILD_NAME to $INPUT_FILE ..."
     mv $BACKUP_JMODS/jmods $EXPLODED/$BUILD_NAME/Contents/Home
   fi
 
-  tar -pczvf $INPUT_FILE --exclude='*.dSYM' --exclude='man' -C $EXPLODED $BUILD_NAME
+  COPYFILE_DISABLE=1 tar -pczf $INPUT_FILE --exclude='*.dSYM' --exclude='man' -C $EXPLODED $BUILD_NAME
   log "Finished zipping"
 )
 rm -rf "$EXPLODED"
-log "Done"
+log "Done"

jb/project/tools/patches/add_jcef_module.patch

@@ -1,18 +1,18 @@
 diff --git modules.list modules.list
-index 33375b527c4..76539cbc0e0 100644
+index e23d793..368d022 100644
 --- modules.list
 +++ modules.list
-@@ -55,4 +55,7 @@ jdk.unsupported,
+@@ -54,4 +54,7 @@ jdk.security.jgss,
+ jdk.unsupported,
  jdk.xml.dom,
  jdk.zipfs,
- jdk.hotspot.agent,
--jdk.jcmd
-+jdk.jcmd,
+-jdk.hotspot.agent
++jdk.hotspot.agent,
 +jcef,
 +gluegen.rt,
 +jogl.all
 diff --git src/java.desktop/share/classes/module-info.java src/java.desktop/share/classes/module-info.java
-index b663b382f52..3e9acdc0c27 100644
+index b663b38..3e9acdc 100644
 --- src/java.desktop/share/classes/module-info.java
 +++ src/java.desktop/share/classes/module-info.java
 @@ -109,7 +109,11 @@ module java.desktop {

jb/project/tools/patches/add_jfx_module.patch

@@ -0,0 +1,18 @@
+diff --git modules.list modules.list
+index e23d793ca61..14b9a6c8e50 100644
+--- modules.list
++++ modules.list
+@@ -20,6 +20,13 @@ java.sql.rowset,
+ java.transaction.xa,
+ java.xml,
+ java.xml.crypto,
++javafx.base,
++javafx.controls,
++javafx.fxml,
++javafx.graphics,
++javafx.media,
++javafx.swing,
++javafx.web,
+ jdk.accessibility,
+ jdk.aot,
+ jdk.attach,

jb/project/tools/patches/dcevm/0001-Apply-basic-dcevm11-patch.patch

@@ -1,7 +1,7 @@
-From d75ca6d0d1799ffde4199f6ef5047699b98d3ff2 Mon Sep 17 00:00:00 2001
+From 4f9a0ded48f51bdfb3ed7cc18df812c456d48a8c Mon Sep 17 00:00:00 2001
 From: skybber <lada.dvorak7@gmail.com>
 Date: Wed, 14 Nov 2018 21:09:39 +0100
-Subject: [PATCH 01/18] Apply basic dcevm11 patch
+Subject: [PATCH 01/50] Apply basic dcevm11 patch
 
 ---
  src/hotspot/share/ci/ciObjectFactory.cpp      |   25 +
@@ -14,9 +14,8 @@ Subject: [PATCH 01/18] Apply basic dcevm11 patch
  .../share/classfile/classLoaderExt.cpp        |    1 +
  src/hotspot/share/classfile/dictionary.cpp    |   46 +-
  src/hotspot/share/classfile/dictionary.hpp    |   10 +
- src/hotspot/share/classfile/javaClasses.cpp   |   63 +
- src/hotspot/share/classfile/javaClasses.hpp   |   54 +-
- .../share/classfile/javaClasses.inline.hpp    |    8 +
+ src/hotspot/share/classfile/javaClasses.cpp   |   51 +
+ src/hotspot/share/classfile/javaClasses.hpp   |   52 +-
  src/hotspot/share/classfile/klassFactory.cpp  |    3 +
  src/hotspot/share/classfile/klassFactory.hpp  |    1 +
  .../share/classfile/loaderConstraints.cpp     |   15 +-
@@ -67,7 +66,7 @@ Subject: [PATCH 01/18] Apply basic dcevm11 patch
  src/hotspot/share/runtime/mutexLocker.cpp     |    5 +-
  src/hotspot/share/runtime/mutexLocker.hpp     |    2 +
  src/hotspot/share/runtime/reflection.cpp      |    6 +
- 63 files changed, 3552 insertions(+), 74 deletions(-)
+ 62 files changed, 3530 insertions(+), 74 deletions(-)
  create mode 100644 src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
  create mode 100644 src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
 
@@ -126,7 +125,7 @@ index 1063c9853e1..3e9d48c4cdc 100644
  
  #endif // SHARE_VM_CI_CIOBJECTFACTORY_HPP
 diff --git a/src/hotspot/share/classfile/classFileParser.cpp b/src/hotspot/share/classfile/classFileParser.cpp
-index 6d65cca2101..e2b8c5793d0 100644
+index 0d4862dd449..ea150df9104 100644
 --- a/src/hotspot/share/classfile/classFileParser.cpp
 +++ b/src/hotspot/share/classfile/classFileParser.cpp
 @@ -954,6 +954,8 @@ void ClassFileParser::parse_interfaces(const ClassFileStream* const stream,
@@ -138,7 +137,7 @@ index 6d65cca2101..e2b8c5793d0 100644
        if (!interf->is_interface()) {
          THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(),
                    err_msg("class %s can not implement %s, because it is not an interface (%s)",
-@@ -3826,7 +3828,7 @@ const InstanceKlass* ClassFileParser::parse_super_class(ConstantPool* const cp,
+@@ -3747,7 +3749,7 @@ const InstanceKlass* ClassFileParser::parse_super_class(ConstantPool* const cp,
      // However, make sure it is not an array type.
      bool is_array = false;
      if (cp->tag_at(super_class_index).is_klass()) {
@@ -147,7 +146,7 @@ index 6d65cca2101..e2b8c5793d0 100644
        if (need_verify)
          is_array = super_klass->is_array_klass();
      } else if (need_verify) {
-@@ -4494,7 +4496,10 @@ void ClassFileParser::set_precomputed_flags(InstanceKlass* ik) {
+@@ -4415,7 +4417,10 @@ void ClassFileParser::set_precomputed_flags(InstanceKlass* ik) {
    if (!_has_empty_finalizer) {
      if (_has_finalizer ||
          (super != NULL && super->has_finalizer())) {
@@ -159,7 +158,7 @@ index 6d65cca2101..e2b8c5793d0 100644
      }
    }
  
-@@ -5872,6 +5877,7 @@ ClassFileParser::ClassFileParser(ClassFileStream* stream,
+@@ -5792,6 +5797,7 @@ ClassFileParser::ClassFileParser(ClassFileStream* stream,
                                   const InstanceKlass* host_klass,
                                   GrowableArray<Handle>* cp_patches,
                                   Publicity pub_level,
@@ -167,7 +166,7 @@ index 6d65cca2101..e2b8c5793d0 100644
                                   TRAPS) :
    _stream(stream),
    _requested_name(name),
-@@ -5930,7 +5936,8 @@ ClassFileParser::ClassFileParser(ClassFileStream* stream,
+@@ -5850,7 +5856,8 @@ ClassFileParser::ClassFileParser(ClassFileStream* stream,
    _has_finalizer(false),
    _has_empty_finalizer(false),
    _has_vanilla_constructor(false),
@@ -177,7 +176,7 @@ index 6d65cca2101..e2b8c5793d0 100644
  
    _class_name = name != NULL ? name : vmSymbols::unknown_class_name();
  
-@@ -6331,14 +6338,15 @@ void ClassFileParser::post_process_parsed_stream(const ClassFileStream* const st
+@@ -6251,14 +6258,15 @@ void ClassFileParser::post_process_parsed_stream(const ClassFileStream* const st
          CHECK);
      }
      Handle loader(THREAD, _loader_data->class_loader());
@@ -196,7 +195,7 @@ index 6d65cca2101..e2b8c5793d0 100644
    if (_super_klass != NULL) {
      if (_super_klass->has_nonstatic_concrete_methods()) {
 diff --git a/src/hotspot/share/classfile/classFileParser.hpp b/src/hotspot/share/classfile/classFileParser.hpp
-index 3bdfd34e39f..d792ab4bb3f 100644
+index 9f7204be9b6..3db14b678f3 100644
 --- a/src/hotspot/share/classfile/classFileParser.hpp
 +++ b/src/hotspot/share/classfile/classFileParser.hpp
 @@ -115,6 +115,9 @@ class ClassFileParser {
@@ -209,7 +208,7 @@ index 3bdfd34e39f..d792ab4bb3f 100644
    enum { fixed_buffer_size = 128 };
    u_char _linenumbertable_buffer[fixed_buffer_size];
  
-@@ -500,6 +503,9 @@ class ClassFileParser {
+@@ -496,6 +499,9 @@ class ClassFileParser {
                       FieldLayoutInfo* info,
                       TRAPS);
  
@@ -219,7 +218,7 @@ index 3bdfd34e39f..d792ab4bb3f 100644
   public:
    ClassFileParser(ClassFileStream* stream,
                    Symbol* name,
-@@ -508,6 +514,7 @@ class ClassFileParser {
+@@ -504,6 +510,7 @@ class ClassFileParser {
                    const InstanceKlass* host_klass,
                    GrowableArray<Handle>* cp_patches,
                    Publicity pub_level,
@@ -227,7 +226,7 @@ index 3bdfd34e39f..d792ab4bb3f 100644
                    TRAPS);
  
    ~ClassFileParser();
-@@ -536,6 +543,7 @@ class ClassFileParser {
+@@ -532,6 +539,7 @@ class ClassFileParser {
    ClassLoaderData* loader_data() const { return _loader_data; }
    const Symbol* class_name() const { return _class_name; }
    const InstanceKlass* super_klass() const { return _super_klass; }
@@ -236,10 +235,10 @@ index 3bdfd34e39f..d792ab4bb3f 100644
    ReferenceType reference_type() const { return _rt; }
    AccessFlags access_flags() const { return _access_flags; }
 diff --git a/src/hotspot/share/classfile/classLoader.cpp b/src/hotspot/share/classfile/classLoader.cpp
-index 78eb096458a..368c59e2cbf 100644
+index 2c73ef93934..28ed54b93e1 100644
 --- a/src/hotspot/share/classfile/classLoader.cpp
 +++ b/src/hotspot/share/classfile/classLoader.cpp
-@@ -1505,6 +1505,7 @@ InstanceKlass* ClassLoader::load_class(Symbol* name, bool search_append_only, TR
+@@ -1501,6 +1501,7 @@ InstanceKlass* ClassLoader::load_class(Symbol* name, bool search_append_only, TR
                                                             protection_domain,
                                                             NULL, // host_klass
                                                             NULL, // cp_patches
@@ -449,10 +448,10 @@ index d26f1f11fb4..fd4b134d7a7 100644
  
  // An entry in the class loader data dictionaries, this describes a class as
 diff --git a/src/hotspot/share/classfile/javaClasses.cpp b/src/hotspot/share/classfile/javaClasses.cpp
-index fc4efecc6e7..903979c9ef2 100644
+index 438e7aa4ec9..a89443d22ea 100644
 --- a/src/hotspot/share/classfile/javaClasses.cpp
 +++ b/src/hotspot/share/classfile/javaClasses.cpp
-@@ -2446,6 +2446,8 @@ void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHand
+@@ -2443,6 +2443,8 @@ void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHand
          skip_throwableInit_check = true;
        }
      }
@@ -461,7 +460,7 @@ index fc4efecc6e7..903979c9ef2 100644
      if (method->is_hidden()) {
        if (skip_hidden)  continue;
      }
-@@ -3628,6 +3630,62 @@ void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f)
+@@ -3625,6 +3627,50 @@ void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f)
  }
  #endif
  
@@ -479,20 +478,14 @@ index fc4efecc6e7..903979c9ef2 100644
 +  dmh->long_field_put(_static_offset_offset, static_offset);
 +}
 +
-+#define DIRECTMETHODHANDLE_STATIC_ACCESSOR_FIELDS_DO(macro) \
-+  macro(_static_offset_offset, k, vmSymbols::static_offset_name(), long_signature, false)
 +
 +void java_lang_invoke_DirectMethodHandle_StaticAccessor::compute_offsets() {
-+  InstanceKlass* k = SystemDictionary::DirectMethodHandle_StaticAccessor_klass();
-+  DIRECTMETHODHANDLE_STATIC_ACCESSOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
++  Klass* klass_oop = SystemDictionary::DirectMethodHandle_StaticAccessor_klass();
++  if (klass_oop != NULL) {
++    compute_offset(_static_offset_offset, InstanceKlass::cast(klass_oop), vmSymbols::static_offset_name(), vmSymbols::long_signature());
++  }
 +}
 +
-+#if INCLUDE_CDS
-+void java_lang_invoke_DirectMethodHandle_StaticAccessor::serialize_offsets(SerializeClosure* f) {
-+  DIRECTMETHODHANDLE_STATIC_ACCESSOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
-+}
-+#endif
-+
 +// Support for java_lang_invoke_DirectMethodHandle$Accessor
 +
 +int java_lang_invoke_DirectMethodHandle_Accessor::_field_offset_offset;
@@ -507,24 +500,18 @@ index fc4efecc6e7..903979c9ef2 100644
 +  dmh->int_field_put(_field_offset_offset, field_offset);
 +}
 +
-+#define DIRECTMETHODHANDLE_ACCESSOR_FIELDS_DO(macro) \
-+  macro(_field_offset_offset, k, vmSymbols::field_offset_name(), int_signature, false)
 +
 +void java_lang_invoke_DirectMethodHandle_Accessor::compute_offsets() {
-+  InstanceKlass* k = SystemDictionary::DirectMethodHandle_Accessor_klass();
-+  DIRECTMETHODHANDLE_ACCESSOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
++  Klass* klass_oop = SystemDictionary::DirectMethodHandle_Accessor_klass();
++  if (klass_oop != NULL) {
++    compute_offset(_field_offset_offset, InstanceKlass::cast(klass_oop), vmSymbols::field_offset_name(), vmSymbols::int_signature());
++  }
 +}
-+
-+#if INCLUDE_CDS
-+void java_lang_invoke_DirectMethodHandle_Accessor::serialize_offsets(SerializeClosure* f) {
-+  DIRECTMETHODHANDLE_ACCESSOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
-+}
-+#endif
 +
  // Support for java_lang_invoke_MethodHandle
  
  int java_lang_invoke_MethodHandle::_type_offset;
-@@ -3814,6 +3872,11 @@ void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Meth
+@@ -3811,6 +3857,11 @@ void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Meth
    resolved_method->address_field_put(_vmtarget_offset, (address)m);
  }
  
@@ -537,19 +524,10 @@ index fc4efecc6e7..903979c9ef2 100644
    // lookup ResolvedMethod oop in the table, or create a new one and intern it
    oop resolved_method = ResolvedMethodTable::find_method(m());
 diff --git a/src/hotspot/share/classfile/javaClasses.hpp b/src/hotspot/share/classfile/javaClasses.hpp
-index bd9cdca3fe3..da004d1b307 100644
+index bd9cdca3fe3..ceb1670df5d 100644
 --- a/src/hotspot/share/classfile/javaClasses.hpp
 +++ b/src/hotspot/share/classfile/javaClasses.hpp
-@@ -67,6 +67,8 @@
-   f(java_lang_invoke_LambdaForm) \
-   f(java_lang_invoke_MethodType) \
-   f(java_lang_invoke_CallSite) \
-+  f(java_lang_invoke_DirectMethodHandle_StaticAccessor) \
-+  f(java_lang_invoke_DirectMethodHandle_Accessor) \
-   f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
-   f(java_security_AccessControlContext) \
-   f(java_lang_reflect_AccessibleObject) \
-@@ -253,10 +255,10 @@ class java_lang_Class : AllStatic {
+@@ -253,10 +253,10 @@ class java_lang_Class : AllStatic {
    static void set_init_lock(oop java_class, oop init_lock);
    static void set_protection_domain(oop java_class, oop protection_domain);
    static void set_class_loader(oop java_class, oop class_loader);
@@ -561,7 +539,7 @@ index bd9cdca3fe3..da004d1b307 100644
    static void allocate_fixup_lists();
    static void compute_offsets();
  
-@@ -1055,6 +1057,55 @@ class java_lang_invoke_DirectMethodHandle: AllStatic {
+@@ -1055,6 +1055,55 @@ class java_lang_invoke_DirectMethodHandle: AllStatic {
    static int member_offset_in_bytes()           { return _member_offset; }
  };
  
@@ -584,9 +562,9 @@ index bd9cdca3fe3..da004d1b307 100644
 +  static bool is_subclass(Klass* klass) {
 +    return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_StaticAccessor_klass());
 +  }
-+  static bool is_instance(oop obj);
-+
-+  static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
++  static bool is_instance(oop obj) {
++    return obj != NULL && is_subclass(obj->klass());
++  }
 +};
 +
 +// Interface to java.lang.invoke.DirectMethodHandle$Accessor objects
@@ -608,16 +586,16 @@ index bd9cdca3fe3..da004d1b307 100644
 +  static bool is_subclass(Klass* klass) {
 +    return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_Accessor_klass());
 +  }
-+  static bool is_instance(oop obj);
-+
-+  static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
++  static bool is_instance(oop obj) {
++    return obj != NULL && is_subclass(obj->klass());
++  }
 +};
 +
 +
  // Interface to java.lang.invoke.LambdaForm objects
  // (These are a private interface for managing adapter code generation.)
  
-@@ -1106,6 +1157,7 @@ class java_lang_invoke_ResolvedMethodName : AllStatic {
+@@ -1106,6 +1155,7 @@ class java_lang_invoke_ResolvedMethodName : AllStatic {
  
    static Method* vmtarget(oop resolved_method);
    static void set_vmtarget(oop resolved_method, Method* method);
@@ -625,25 +603,6 @@ index bd9cdca3fe3..da004d1b307 100644
  
    // find or create resolved member name
    static oop find_resolved_method(const methodHandle& m, TRAPS);
-diff --git a/src/hotspot/share/classfile/javaClasses.inline.hpp b/src/hotspot/share/classfile/javaClasses.inline.hpp
-index 6c5787f4b70..ba9cffa8c62 100644
---- a/src/hotspot/share/classfile/javaClasses.inline.hpp
-+++ b/src/hotspot/share/classfile/javaClasses.inline.hpp
-@@ -175,6 +175,14 @@ inline bool java_lang_invoke_DirectMethodHandle::is_instance(oop obj) {
-   return obj != NULL && is_subclass(obj->klass());
- }
- 
-+inline bool java_lang_invoke_DirectMethodHandle_StaticAccessor::is_instance(oop obj) {
-+  return obj != NULL && is_subclass(obj->klass());
-+}
-+
-+inline bool java_lang_invoke_DirectMethodHandle_Accessor::is_instance(oop obj) {
-+  return obj != NULL && is_subclass(obj->klass());
-+}
-+
- inline bool java_lang_Module::is_instance(oop obj) {
-   return obj != NULL && obj->klass() == SystemDictionary::Module_klass();
- }
 diff --git a/src/hotspot/share/classfile/klassFactory.cpp b/src/hotspot/share/classfile/klassFactory.cpp
 index 3614480f16b..355016c8f61 100644
 --- a/src/hotspot/share/classfile/klassFactory.cpp
@@ -685,10 +644,10 @@ index c08f8b9a119..b7b96c5cfdc 100644
   public:
    static InstanceKlass* check_shared_class_file_load_hook(
 diff --git a/src/hotspot/share/classfile/loaderConstraints.cpp b/src/hotspot/share/classfile/loaderConstraints.cpp
-index 7cccf23efb7..a26b9d1cb55 100644
+index 9cd141bbfa2..e4a23e8a27c 100644
 --- a/src/hotspot/share/classfile/loaderConstraints.cpp
 +++ b/src/hotspot/share/classfile/loaderConstraints.cpp
-@@ -90,6 +90,19 @@ LoaderConstraintEntry** LoaderConstraintTable::find_loader_constraint(
+@@ -87,6 +87,19 @@ LoaderConstraintEntry** LoaderConstraintTable::find_loader_constraint(
    return pp;
  }
  
@@ -708,7 +667,7 @@ index 7cccf23efb7..a26b9d1cb55 100644
  
  void LoaderConstraintTable::purge_loader_constraints() {
    assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
-@@ -445,7 +458,7 @@ void LoaderConstraintTable::verify(PlaceholderTable* placeholders) {
+@@ -442,7 +455,7 @@ void LoaderConstraintTable::verify(PlaceholderTable* placeholders) {
          if (k != NULL) {
            // We found the class in the dictionary, so we should
            // make sure that the Klass* matches what we already have.
@@ -732,7 +691,7 @@ index 8a7a1248e62..611e18aaf85 100644
    bool add_entry(Symbol* name, InstanceKlass* klass1, Handle loader1,
                                      InstanceKlass* klass2, Handle loader2);
 diff --git a/src/hotspot/share/classfile/systemDictionary.cpp b/src/hotspot/share/classfile/systemDictionary.cpp
-index bfd67334f82..5a745b6fca6 100644
+index 91dc9faeccb..9dbd6cc9c12 100644
 --- a/src/hotspot/share/classfile/systemDictionary.cpp
 +++ b/src/hotspot/share/classfile/systemDictionary.cpp
 @@ -201,6 +201,7 @@ Klass* SystemDictionary::resolve_or_fail(Symbol* class_name, Handle class_loader
@@ -824,7 +783,7 @@ index bfd67334f82..5a745b6fca6 100644
    } );
  
    return k;
-@@ -1553,11 +1566,12 @@ static void post_class_define_event(InstanceKlass* k, const ClassLoaderData* def
+@@ -1554,11 +1567,12 @@ static void post_class_define_event(InstanceKlass* k, const ClassLoaderData* def
    }
  }
  
@@ -838,7 +797,7 @@ index bfd67334f82..5a745b6fca6 100644
  
   // for bootstrap and other parallel classloaders don't acquire lock,
   // use placeholder token
-@@ -1582,7 +1596,11 @@ void SystemDictionary::define_instance_class(InstanceKlass* k, TRAPS) {
+@@ -1583,7 +1597,11 @@ void SystemDictionary::define_instance_class(InstanceKlass* k, TRAPS) {
    Symbol*  name_h = k->name();
    Dictionary* dictionary = loader_data->dictionary();
    unsigned int d_hash = dictionary->compute_hash(name_h);
@@ -851,7 +810,7 @@ index bfd67334f82..5a745b6fca6 100644
  
    // Register class just loaded with class loader (placed in Vector)
    // Note we do this before updating the dictionary, as this can
-@@ -1616,7 +1634,7 @@ void SystemDictionary::define_instance_class(InstanceKlass* k, TRAPS) {
+@@ -1617,7 +1635,7 @@ void SystemDictionary::define_instance_class(InstanceKlass* k, TRAPS) {
    k->eager_initialize(THREAD);
  
    // notify jvmti
@@ -860,7 +819,7 @@ index bfd67334f82..5a745b6fca6 100644
        assert(THREAD->is_Java_thread(), "thread->is_Java_thread()");
        JvmtiExport::post_class_load((JavaThread *) THREAD, k);
  
-@@ -1694,7 +1712,7 @@ InstanceKlass* SystemDictionary::find_or_define_instance_class(Symbol* class_nam
+@@ -1695,7 +1713,7 @@ InstanceKlass* SystemDictionary::find_or_define_instance_class(Symbol* class_nam
      }
    }
  
@@ -869,7 +828,7 @@ index bfd67334f82..5a745b6fca6 100644
  
    Handle linkage_exception = Handle(); // null handle
  
-@@ -1817,6 +1835,18 @@ void SystemDictionary::add_to_hierarchy(InstanceKlass* k, TRAPS) {
+@@ -1818,6 +1836,18 @@ void SystemDictionary::add_to_hierarchy(InstanceKlass* k, TRAPS) {
    CodeCache::flush_dependents_on(k);
  }
  
@@ -888,7 +847,7 @@ index bfd67334f82..5a745b6fca6 100644
  // ----------------------------------------------------------------------------
  // GC support
  
-@@ -2113,7 +2143,7 @@ void SystemDictionary::check_constraints(unsigned int d_hash,
+@@ -2089,7 +2119,7 @@ void SystemDictionary::check_constraints(unsigned int d_hash,
        // also hold array classes.
  
        assert(check->is_instance_klass(), "noninstance in systemdictionary");
@@ -898,10 +857,10 @@ index bfd67334f82..5a745b6fca6 100644
          ss.print("loader %s", loader_data->loader_name_and_id());
          ss.print(" attempted duplicate %s definition for %s. (%s)",
 diff --git a/src/hotspot/share/classfile/systemDictionary.hpp b/src/hotspot/share/classfile/systemDictionary.hpp
-index 649b321a6a4..06f6c869d63 100644
+index d38dd0fd003..717f34ce9a0 100644
 --- a/src/hotspot/share/classfile/systemDictionary.hpp
 +++ b/src/hotspot/share/classfile/systemDictionary.hpp
-@@ -161,6 +161,8 @@ class OopStorage;
+@@ -158,6 +158,8 @@ class OopStorage;
                                                                                                                           \
    /* support for dynamic typing; it's OK if these are NULL in earlier JDKs */                                            \
    do_klass(DirectMethodHandle_klass,                    java_lang_invoke_DirectMethodHandle,       Opt                 ) \
@@ -910,7 +869,7 @@ index 649b321a6a4..06f6c869d63 100644
    do_klass(MethodHandle_klass,                          java_lang_invoke_MethodHandle,             Pre                 ) \
    do_klass(VarHandle_klass,                             java_lang_invoke_VarHandle,                Pre                 ) \
    do_klass(MemberName_klass,                            java_lang_invoke_MemberName,               Pre                 ) \
-@@ -318,6 +320,7 @@ public:
+@@ -315,6 +317,7 @@ public:
                                              Handle class_loader,
                                              Handle protection_domain,
                                              ClassFileStream* st,
@@ -918,9 +877,9 @@ index 649b321a6a4..06f6c869d63 100644
                                              TRAPS);
  
    // Lookup an already loaded class. If not found NULL is returned.
-@@ -462,6 +465,10 @@ public:
-   static bool is_well_known_klass(Symbol* class_name);
- #endif
+@@ -452,6 +455,10 @@ public:
+   }
+   static BasicType box_klass_type(Klass* k);  // inverse of box_klass
  
 +  // Enhanced class redefinition
 +  static void remove_from_hierarchy(InstanceKlass* k);
@@ -929,7 +888,7 @@ index 649b321a6a4..06f6c869d63 100644
  protected:
    // Returns the class loader data to be used when looking up/updating the
    // system dictionary.
-@@ -655,7 +662,7 @@ protected:
+@@ -645,7 +652,7 @@ protected:
    // after waiting, but before reentering SystemDictionary_lock
    // to preserve lock order semantics.
    static void double_lock_wait(Handle lockObject, TRAPS);
@@ -939,7 +898,7 @@ index 649b321a6a4..06f6c869d63 100644
                                                  Handle class_loader,
                                                  InstanceKlass* k, TRAPS);
 diff --git a/src/hotspot/share/classfile/systemDictionaryShared.cpp b/src/hotspot/share/classfile/systemDictionaryShared.cpp
-index ad638e26579..32de261588a 100644
+index ed75ecd9261..1f1441f3ffb 100644
 --- a/src/hotspot/share/classfile/systemDictionaryShared.cpp
 +++ b/src/hotspot/share/classfile/systemDictionaryShared.cpp
 @@ -520,7 +520,7 @@ InstanceKlass* SystemDictionaryShared::find_or_load_shared_class(
@@ -952,10 +911,10 @@ index ad638e26579..32de261588a 100644
      }
    }
 diff --git a/src/hotspot/share/classfile/verifier.cpp b/src/hotspot/share/classfile/verifier.cpp
-index 9402f628b03..f55ececb086 100644
+index ea4f74fc783..472216b6a40 100644
 --- a/src/hotspot/share/classfile/verifier.cpp
 +++ b/src/hotspot/share/classfile/verifier.cpp
-@@ -244,7 +244,7 @@ bool Verifier::is_eligible_for_verification(InstanceKlass* klass, bool should_ve
+@@ -237,7 +237,7 @@ bool Verifier::is_eligible_for_verification(InstanceKlass* klass, bool should_ve
    Symbol* name = klass->name();
    Klass* refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass();
  
@@ -977,10 +936,10 @@ index 05239c57866..c1357bde0ed 100644
    methodHandle        _method; // current method being verified
    VerificationType    _this_type; // the verification type of the current class
 diff --git a/src/hotspot/share/classfile/vmSymbols.hpp b/src/hotspot/share/classfile/vmSymbols.hpp
-index 44cf2583eb9..41e9a84cd69 100644
+index 73645b42857..e2bac31b27f 100644
 --- a/src/hotspot/share/classfile/vmSymbols.hpp
 +++ b/src/hotspot/share/classfile/vmSymbols.hpp
-@@ -286,6 +286,8 @@
+@@ -284,6 +284,8 @@
    template(java_lang_invoke_CallSite,                 "java/lang/invoke/CallSite")                \
    template(java_lang_invoke_ConstantCallSite,         "java/lang/invoke/ConstantCallSite")        \
    template(java_lang_invoke_DirectMethodHandle,       "java/lang/invoke/DirectMethodHandle")      \
@@ -989,7 +948,7 @@ index 44cf2583eb9..41e9a84cd69 100644
    template(java_lang_invoke_MutableCallSite,          "java/lang/invoke/MutableCallSite")         \
    template(java_lang_invoke_VolatileCallSite,         "java/lang/invoke/VolatileCallSite")        \
    template(java_lang_invoke_MethodHandle,             "java/lang/invoke/MethodHandle")            \
-@@ -446,6 +448,12 @@
+@@ -444,6 +446,12 @@
    template(module_entry_name,                         "module_entry")                             \
    template(resolved_references_name,                  "<resolved_references>")                    \
    template(init_lock_name,                            "<init_lock>")                              \
@@ -1003,7 +962,7 @@ index 44cf2583eb9..41e9a84cd69 100644
    /* name symbols needed by intrinsics */                                                         \
    VM_INTRINSICS_DO(VM_INTRINSIC_IGNORE, VM_SYMBOL_IGNORE, template, VM_SYMBOL_IGNORE, VM_ALIAS_IGNORE) \
 diff --git a/src/hotspot/share/gc/cms/compactibleFreeListSpace.cpp b/src/hotspot/share/gc/cms/compactibleFreeListSpace.cpp
-index 17d563338b8..4c9918627a2 100644
+index 7b9096d73be..a93f764f1b9 100644
 --- a/src/hotspot/share/gc/cms/compactibleFreeListSpace.cpp
 +++ b/src/hotspot/share/gc/cms/compactibleFreeListSpace.cpp
 @@ -376,6 +376,12 @@ CompactibleFreeListSpace::CompactibleFreeListSpace(BlockOffsetSharedArray* bs, M
@@ -1019,7 +978,7 @@ index 17d563338b8..4c9918627a2 100644
  // Like CompactibleSpace forward() but always calls cross_threshold() to
  // update the block offset table.  Removed initialize_threshold call because
  // CFLS does not use a block offset array for contiguous spaces.
-@@ -2203,7 +2209,8 @@ CompactibleFreeListSpace::refillLinearAllocBlock(LinearAllocBlock* blk) {
+@@ -2190,7 +2196,8 @@ CompactibleFreeListSpace::refillLinearAllocBlock(LinearAllocBlock* blk) {
  
  // Support for compaction
  void CompactibleFreeListSpace::prepare_for_compaction(CompactPoint* cp) {
@@ -1029,7 +988,7 @@ index 17d563338b8..4c9918627a2 100644
    // Prepare_for_compaction() uses the space between live objects
    // so that later phase can skip dead space quickly.  So verification
    // of the free lists doesn't work after.
-@@ -2221,7 +2228,7 @@ void CompactibleFreeListSpace::adjust_pointers() {
+@@ -2208,7 +2215,7 @@ void CompactibleFreeListSpace::adjust_pointers() {
  }
  
  void CompactibleFreeListSpace::compact() {
@@ -1236,10 +1195,10 @@ index cf96ade0ef0..b6187dae4d0 100644
  
    static void follow_klass(Klass* klass);
 diff --git a/src/hotspot/share/gc/shared/gcConfig.cpp b/src/hotspot/share/gc/shared/gcConfig.cpp
-index 8c42e43b00d..9779df92447 100644
+index ddc84c1d2a4..8aac2b39e1e 100644
 --- a/src/hotspot/share/gc/shared/gcConfig.cpp
 +++ b/src/hotspot/share/gc/shared/gcConfig.cpp
-@@ -106,7 +106,10 @@ void GCConfig::fail_if_unsupported_gc_is_selected() {
+@@ -101,7 +101,10 @@ void GCConfig::fail_if_unsupported_gc_is_selected() {
  }
  
  void GCConfig::select_gc_ergonomically() {
@@ -1684,7 +1643,7 @@ index 81998728f66..b9ccdee8cca 100644
      }
    }
 diff --git a/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp b/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp
-index 77c28924b0d..84891b48c2a 100644
+index b532101c9b5..8afe8985026 100644
 --- a/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp
 +++ b/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp
 @@ -1467,6 +1467,7 @@ static InstanceKlass* create_new_instance_klass(InstanceKlass* ik, ClassFileStre
@@ -1919,7 +1878,7 @@ index 2a93500b794..2a9eb978b43 100644
  
    // RedefineClasses support
 diff --git a/src/hotspot/share/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
-index 645a63e71be..f059a05ebe7 100644
+index 9ba36f2de3f..8a262bc3735 100644
 --- a/src/hotspot/share/oops/instanceKlass.cpp
 +++ b/src/hotspot/share/oops/instanceKlass.cpp
 @@ -832,7 +832,8 @@ bool InstanceKlass::link_class_impl(bool throw_verifyerror, TRAPS) {
@@ -2013,7 +1972,7 @@ index 645a63e71be..f059a05ebe7 100644
  }
  
  #ifndef PRODUCT
-@@ -3552,7 +3602,7 @@ void InstanceKlass::verify_on(outputStream* st) {
+@@ -3532,7 +3582,7 @@ void InstanceKlass::verify_on(outputStream* st) {
      }
  
      guarantee(sib->is_klass(), "should be klass");
@@ -2186,10 +2145,10 @@ index b77a19deb38..5573b10f021 100644
    // Compiler support
    static ByteSize super_offset()                 { return in_ByteSize(offset_of(Klass, _super)); }
 diff --git a/src/hotspot/share/oops/method.cpp b/src/hotspot/share/oops/method.cpp
-index 916772c0b10..ed6f769bf1b 100644
+index 7ca9b4b90ca..bee69f9cec6 100644
 --- a/src/hotspot/share/oops/method.cpp
 +++ b/src/hotspot/share/oops/method.cpp
-@@ -1402,6 +1402,8 @@ methodHandle Method::clone_with_new_data(const methodHandle& m, u_char* new_code
+@@ -1405,6 +1405,8 @@ methodHandle Method::clone_with_new_data(const methodHandle& m, u_char* new_code
  
    // Reset correct method/const method, method size, and parameter info
    newm->set_constMethod(newcm);
@@ -2198,7 +2157,7 @@ index 916772c0b10..ed6f769bf1b 100644
    newm->constMethod()->set_code_size(new_code_length);
    newm->constMethod()->set_constMethod_size(new_const_method_size);
    assert(newm->code_size() == new_code_length, "check");
-@@ -2096,6 +2098,10 @@ void Method::ensure_jmethod_ids(ClassLoaderData* loader_data, int capacity) {
+@@ -2099,6 +2101,10 @@ void Method::ensure_jmethod_ids(ClassLoaderData* loader_data, int capacity) {
  
  // Add a method id to the jmethod_ids
  jmethodID Method::make_jmethod_id(ClassLoaderData* loader_data, Method* m) {
@@ -2248,7 +2207,7 @@ index 18c706187df..4533476ff8f 100644
    Symbol* signature() const                      { return constants()->symbol_at(signature_index()); }
    int signature_index() const                    { return constMethod()->signature_index();         }
 diff --git a/src/hotspot/share/prims/jni.cpp b/src/hotspot/share/prims/jni.cpp
-index 21e7f652652..e9cc3de9652 100644
+index f9a69ef0c8b..231ada3f0ab 100644
 --- a/src/hotspot/share/prims/jni.cpp
 +++ b/src/hotspot/share/prims/jni.cpp
 @@ -353,6 +353,7 @@ JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderR
@@ -2260,10 +2219,10 @@ index 21e7f652652..e9cc3de9652 100644
  
    if (log_is_enabled(Debug, class, resolve) && k != NULL) {
 diff --git a/src/hotspot/share/prims/jvm.cpp b/src/hotspot/share/prims/jvm.cpp
-index 378dcce8cf5..f92d2697e0e 100644
+index 797b022d5e5..eb4b7622820 100644
 --- a/src/hotspot/share/prims/jvm.cpp
 +++ b/src/hotspot/share/prims/jvm.cpp
-@@ -936,6 +936,7 @@ static jclass jvm_define_class_common(JNIEnv *env, const char *name,
+@@ -927,6 +927,7 @@ static jclass jvm_define_class_common(JNIEnv *env, const char *name,
                                                     class_loader,
                                                     protection_domain,
                                                     &st,
@@ -2273,7 +2232,7 @@ index 378dcce8cf5..f92d2697e0e 100644
    if (log_is_enabled(Debug, class, resolve) && k != NULL) {
 diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
 new file mode 100644
-index 00000000000..80c31135487
+index 00000000000..83c0952de37
 --- /dev/null
 +++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
 @@ -0,0 +1,2255 @@
@@ -4534,7 +4493,7 @@ index 00000000000..80c31135487
 +}
 diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
 new file mode 100644
-index 00000000000..3f95cf42645
+index 00000000000..b712d69a193
 --- /dev/null
 +++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
 @@ -0,0 +1,202 @@
@@ -4741,7 +4700,7 @@ index 00000000000..3f95cf42645
 +};
 +#endif // SHARE_VM_PRIMS_JVMTIREDEFINECLASSES2_HPP
 diff --git a/src/hotspot/share/prims/jvmtiEnv.cpp b/src/hotspot/share/prims/jvmtiEnv.cpp
-index f54c9b713be..54617f05b5a 100644
+index 1dd911fd8d8..bc6ebb2d4af 100644
 --- a/src/hotspot/share/prims/jvmtiEnv.cpp
 +++ b/src/hotspot/share/prims/jvmtiEnv.cpp
 @@ -50,6 +50,7 @@
@@ -4752,7 +4711,7 @@ index f54c9b713be..54617f05b5a 100644
  #include "prims/jvmtiTagMap.hpp"
  #include "prims/jvmtiThreadState.inline.hpp"
  #include "prims/jvmtiUtil.hpp"
-@@ -382,8 +383,13 @@ JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr
+@@ -381,8 +382,13 @@ JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr
  // is_modifiable_class_ptr - pre-checked for NULL
  jvmtiError
  JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) {
@@ -4768,7 +4727,7 @@ index f54c9b713be..54617f05b5a 100644
    return JVMTI_ERROR_NONE;
  } /* end IsModifiableClass */
  
-@@ -413,7 +419,8 @@ JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) {
+@@ -412,7 +418,8 @@ JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) {
        return JVMTI_ERROR_INVALID_CLASS;
      }
  
@@ -4778,7 +4737,7 @@ index f54c9b713be..54617f05b5a 100644
        return JVMTI_ERROR_UNMODIFIABLE_CLASS;
      }
  
-@@ -445,6 +452,12 @@ JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) {
+@@ -444,6 +451,12 @@ JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) {
      }
      class_definitions[index].klass              = jcls;
    }
@@ -4791,7 +4750,7 @@ index f54c9b713be..54617f05b5a 100644
    VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform);
    VMThread::execute(&op);
    return (op.check_error());
-@@ -455,7 +468,12 @@ JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) {
+@@ -454,7 +467,12 @@ JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) {
  // class_definitions - pre-checked for NULL
  jvmtiError
  JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) {
@@ -4806,10 +4765,10 @@ index f54c9b713be..54617f05b5a 100644
    VMThread::execute(&op);
    return (op.check_error());
 diff --git a/src/hotspot/share/prims/jvmtiExport.cpp b/src/hotspot/share/prims/jvmtiExport.cpp
-index 6600848e2d3..9337b6ab585 100644
+index c2e86c2406a..2463c1f7bdb 100644
 --- a/src/hotspot/share/prims/jvmtiExport.cpp
 +++ b/src/hotspot/share/prims/jvmtiExport.cpp
-@@ -2780,7 +2780,7 @@ JvmtiDynamicCodeEventCollector::JvmtiDynamicCodeEventCollector() : _code_blobs(N
+@@ -2799,7 +2799,7 @@ JvmtiDynamicCodeEventCollector::JvmtiDynamicCodeEventCollector() : _code_blobs(N
  // iterate over any code blob descriptors collected and post a
  // DYNAMIC_CODE_GENERATED event to the profiler.
  JvmtiDynamicCodeEventCollector::~JvmtiDynamicCodeEventCollector() {
@@ -4819,10 +4778,10 @@ index 6600848e2d3..9337b6ab585 100644
   if (_code_blobs != NULL) {
     for (int i=0; i<_code_blobs->length(); i++) {
 diff --git a/src/hotspot/share/prims/jvmtiExport.hpp b/src/hotspot/share/prims/jvmtiExport.hpp
-index cc5868f1e93..a6cbac03bb2 100644
+index 99288f7590c..bb58ad9432c 100644
 --- a/src/hotspot/share/prims/jvmtiExport.hpp
 +++ b/src/hotspot/share/prims/jvmtiExport.hpp
-@@ -176,6 +176,7 @@ class JvmtiExport : public AllStatic {
+@@ -178,6 +178,7 @@ class JvmtiExport : public AllStatic {
    // systems as needed to relax invariant checks.
    static bool _has_redefined_a_class;
    friend class VM_RedefineClasses;
@@ -4850,10 +4809,10 @@ index 61a616271f6..60604c645ff 100644
  
    int extract(jclass* result_list) {
 diff --git a/src/hotspot/share/prims/jvmtiImpl.cpp b/src/hotspot/share/prims/jvmtiImpl.cpp
-index a0a6a6cbd18..39953a71244 100644
+index 001c592807a..2a92ece916e 100644
 --- a/src/hotspot/share/prims/jvmtiImpl.cpp
 +++ b/src/hotspot/share/prims/jvmtiImpl.cpp
-@@ -295,6 +295,11 @@ void JvmtiBreakpoint::each_method_version_do(method_action meth_act) {
+@@ -293,6 +293,11 @@ void JvmtiBreakpoint::each_method_version_do(method_action meth_act) {
    Symbol* m_name = _method->name();
    Symbol* m_signature = _method->signature();
  
@@ -4935,10 +4894,10 @@ index c071e0641d4..a9057893368 100644
  }
  #endif // INCLUDE_JVMTI
 diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
-index 3e7d48ad5a3..a11dfe48dd6 100644
+index 740c44cded4..ca57b524593 100644
 --- a/src/hotspot/share/runtime/arguments.cpp
 +++ b/src/hotspot/share/runtime/arguments.cpp
-@@ -2033,6 +2033,36 @@ unsigned int addopens_count = 0;
+@@ -2035,6 +2035,36 @@ unsigned int addopens_count = 0;
  unsigned int addmods_count = 0;
  unsigned int patch_mod_count = 0;
  
@@ -4975,7 +4934,7 @@ index 3e7d48ad5a3..a11dfe48dd6 100644
  // Check the consistency of vm_init_args
  bool Arguments::check_vm_args_consistency() {
    // Method for adding checks for flag consistency.
-@@ -2049,6 +2079,8 @@ bool Arguments::check_vm_args_consistency() {
+@@ -2051,6 +2081,8 @@ bool Arguments::check_vm_args_consistency() {
      status = false;
    }
  
@@ -4985,10 +4944,10 @@ index 3e7d48ad5a3..a11dfe48dd6 100644
  #if INCLUDE_NMT
      if (MemTracker::tracking_level() == NMT_off) {
 diff --git a/src/hotspot/share/runtime/arguments.hpp b/src/hotspot/share/runtime/arguments.hpp
-index bd439aab073..cc7f71a4404 100644
+index 72bfd2bf9e3..46450cce5c9 100644
 --- a/src/hotspot/share/runtime/arguments.hpp
 +++ b/src/hotspot/share/runtime/arguments.hpp
-@@ -506,6 +506,7 @@ class Arguments : AllStatic {
+@@ -505,6 +505,7 @@ class Arguments : AllStatic {
    static bool process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized);
  
    static size_t conservative_max_heap_alignment() { return _conservative_max_heap_alignment; }
@@ -4997,10 +4956,10 @@ index bd439aab073..cc7f71a4404 100644
    static size_t max_heap_for_compressed_oops();
  
 diff --git a/src/hotspot/share/runtime/globals.hpp b/src/hotspot/share/runtime/globals.hpp
-index 4a53ecb37a8..a6c33744760 100644
+index 6b5713be433..f3cf08fffb6 100644
 --- a/src/hotspot/share/runtime/globals.hpp
 +++ b/src/hotspot/share/runtime/globals.hpp
-@@ -2674,7 +2674,11 @@ define_pd_global(uint64_t,MaxRAM,                    1ULL*G);
+@@ -2671,7 +2671,11 @@ define_pd_global(uint64_t,MaxRAM,                    1ULL*G);
            "Start flight recording with options"))                           \
                                                                              \
    experimental(bool, UseFastUnorderedTimeStamps, false,                     \
@@ -5014,10 +4973,10 @@ index 4a53ecb37a8..a6c33744760 100644
  #define VM_FLAGS(develop,                                                   \
                   develop_pd,                                                \
 diff --git a/src/hotspot/share/runtime/interfaceSupport.inline.hpp b/src/hotspot/share/runtime/interfaceSupport.inline.hpp
-index f39687a25bc..7b1aa3cc58e 100644
+index f5dac06750a..40a8bdd8e62 100644
 --- a/src/hotspot/share/runtime/interfaceSupport.inline.hpp
 +++ b/src/hotspot/share/runtime/interfaceSupport.inline.hpp
-@@ -276,8 +276,8 @@ class ThreadToNativeFromVM : public ThreadStateTransition {
+@@ -277,8 +277,8 @@ class ThreadToNativeFromVM : public ThreadStateTransition {
   public:
    ThreadToNativeFromVM(JavaThread *thread) : ThreadStateTransition(thread) {
      // We are leaving the VM at this point and going directly to native code.
@@ -5029,7 +4988,7 @@ index f39687a25bc..7b1aa3cc58e 100644
      trans_and_fence(_thread_in_vm, _thread_in_native);
      // Check for pending. async. exceptions or suspends.
 diff --git a/src/hotspot/share/runtime/javaCalls.cpp b/src/hotspot/share/runtime/javaCalls.cpp
-index 563ffdbd446..55f06eadcc2 100644
+index 32040586b36..0eb2fc1ec6b 100644
 --- a/src/hotspot/share/runtime/javaCalls.cpp
 +++ b/src/hotspot/share/runtime/javaCalls.cpp
 @@ -57,7 +57,8 @@ JavaCallWrapper::JavaCallWrapper(const methodHandle& callee_method, Handle recei
@@ -5043,7 +5002,7 @@ index 563ffdbd446..55f06eadcc2 100644
    _result   = result;
  
 diff --git a/src/hotspot/share/runtime/mutexLocker.cpp b/src/hotspot/share/runtime/mutexLocker.cpp
-index d504ef00f90..982ba1b69d5 100644
+index b258e347c94..0e60bb4b6bd 100644
 --- a/src/hotspot/share/runtime/mutexLocker.cpp
 +++ b/src/hotspot/share/runtime/mutexLocker.cpp
 @@ -5,7 +5,7 @@
@@ -5064,7 +5023,7 @@ index d504ef00f90..982ba1b69d5 100644
  Monitor* GCTaskManager_lock           = NULL;
  
  Mutex*   Management_lock              = NULL;
-@@ -285,6 +287,7 @@ void mutex_init() {
+@@ -275,6 +277,7 @@ void mutex_init() {
    def(JNIGlobalActive_lock         , PaddedMutex  , nonleaf-1,   true,  Monitor::_safepoint_check_never);
    def(JNIWeakAlloc_lock            , PaddedMutex  , nonleaf,     true,  Monitor::_safepoint_check_never);
    def(JNIWeakActive_lock           , PaddedMutex  , nonleaf-1,   true,  Monitor::_safepoint_check_never);
@@ -5103,5 +5062,5 @@ index a49b5108821..ed789b0bc2b 100644
    // field's access bits are "access".  We assume that we've already verified
    // that current_class can access member_class.
 -- 
-2.23.0
+2.24.3 (Apple Git-128)
 

jb/project/tools/patches/dcevm/0002-We-need-to-set-classRedefinitionCount-on-new-class-n.patch

@@ -0,0 +1,26 @@
+From a4b2a34a6c9d477ce339bece718abe992cdd5002 Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Wed, 14 Nov 2018 21:18:22 +0100
+Subject: [PATCH 02/50] We need to set classRedefinitionCount on new class, not
+ old class.
+
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 83c0952de37..83cf0be090b 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -1904,7 +1904,7 @@ void VM_EnhancedRedefineClasses::increment_class_counter(InstanceKlass *ik, TRAP
+   oop class_mirror = ik->java_mirror();
+   Klass* class_oop = java_lang_Class::as_Klass(class_mirror);
+   int new_count = java_lang_Class::classRedefinedCount(class_mirror) + 1;
+-  java_lang_Class::set_classRedefinedCount(class_mirror, new_count);
++  java_lang_Class::set_classRedefinedCount(ik->new_version()->java_mirror(), new_count);
+ 
+   if (class_oop != _the_class_oop) {
+     // _the_class_oop count is printed at end of redefine_single_class()
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0003-Fix-crashes-in-MetadataOnStackMark-MetadataOnSta.patch

@@ -0,0 +1,30 @@
+From e5c0b2d69ab024ec0469f5c105f13f889b598815 Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Wed, 14 Nov 2018 21:22:01 +0100
+Subject: [PATCH 03/50] Fix crashes in MetadataOnStackMark::~MetadataOnSta
+
+MetadataOnStackMark shoukld not remove dcevm stuff. It was added
+accidentaly in dcevm9,
+and never was part of doit() in previous versions.
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 83cf0be090b..61af07d0f86 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -470,7 +470,9 @@ void VM_EnhancedRedefineClasses::doit() {
+ 
+   // Mark methods seen on stack and everywhere else so old methods are not
+   // cleaned up if they're on the stack.
+-  MetadataOnStackMark md_on_stack(true);
++
++  // FIXME: fails in enhanced redefinition
++  // MetadataOnStackMark md_on_stack(true);
+   HandleMark hm(thread);   // make sure any handles created are deleted
+                            // before the stack walk again.
+ 
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0004-Fix-problem-with-nested-members.patch

@@ -0,0 +1,25 @@
+From 360fbbd15357fb3cb19abc6ffb40320efadce616 Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Mon, 3 Dec 2018 19:34:53 +0100
+Subject: [PATCH 04/50] Fix problem with nested members
+
+Reported at : https://stackoverflow.com/questions/53370380/hotswapagent-incompatibleclasschangeerror-type-headerpanel1-is-not-a-nest-mem
+---
+ src/hotspot/share/oops/instanceKlass.cpp | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/hotspot/share/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
+index 8a262bc3735..9b6ba7e9304 100644
+--- a/src/hotspot/share/oops/instanceKlass.cpp
++++ b/src/hotspot/share/oops/instanceKlass.cpp
+@@ -178,6 +178,7 @@ bool InstanceKlass::has_nest_member(InstanceKlass* k, TRAPS) const {
+       }
+ 
+       Klass* k2 = _constants->klass_at(cp_index, CHECK_false);
++      k2 = k2->newest_version();
+       if (k2 == k) {
+         log_trace(class, nestmates)("- class is listed as a nest member");
+         return true;
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0005-Use-init_mark_raw.patch

@@ -0,0 +1,26 @@
+From 4e2aef4c3b201e9639acdd39aa9e7ecdc9fb6a86 Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Mon, 10 Dec 2018 20:12:07 +0100
+Subject: [PATCH 05/50] Use init_mark_raw()
+
+method changed since j8 - it used init_mark()
+---
+ src/hotspot/share/gc/shared/space.inline.hpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/gc/shared/space.inline.hpp b/src/hotspot/share/gc/shared/space.inline.hpp
+index 4394eff00c5..75d7e685edf 100644
+--- a/src/hotspot/share/gc/shared/space.inline.hpp
++++ b/src/hotspot/share/gc/shared/space.inline.hpp
+@@ -371,7 +371,7 @@ inline void CompactibleSpace::scan_and_compact(SpaceType* space, bool redefiniti
+         } else {
+           MarkSweep::update_fields(oop(cur_obj), oop(compaction_top));
+         }
+-        oop(compaction_top)->init_mark();
++        oop(compaction_top)->init_mark_raw();
+         assert(oop(compaction_top)->klass() != NULL, "should have a class");
+ 
+         debug_only(prev_obj = cur_obj);
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0006-Fix-methodHandles.patch

@@ -0,0 +1,25 @@
+From 15194627b2573f109aef2cacc6ebfb600d0a20f0 Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Thu, 13 Dec 2018 20:51:09 +0100
+Subject: [PATCH 06/50] Fix methodHandles
+
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 61af07d0f86..1c7595787a1 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -248,7 +248,7 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+     int ref_kind =       (flags >> REFERENCE_KIND_SHIFT) & REFERENCE_KIND_MASK;
+     if (MethodHandles::ref_kind_is_method(ref_kind)) {
+       Method* m = (Method*) java_lang_invoke_MemberName::vmtarget(obj);
+-      if (m != NULL && m->method_holder()->new_version() != NULL) {
++      if (m != NULL && m->method_holder()->is_redefining()) {
+         // Let's try to re-resolve method
+         InstanceKlass* newest = InstanceKlass::cast(m->method_holder()->newest_version());
+         Method* new_method = newest->find_method(m->name(), m->signature());
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0007-Fix-field-method.patch

@@ -0,0 +1,58 @@
+From 23a83be457df96d519db8de59a49dd65731efcc4 Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Sat, 15 Dec 2018 18:23:30 +0100
+Subject: [PATCH 07/50] Fix field method
+
+---
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 19 ++++++++++++-------
+ 1 file changed, 12 insertions(+), 7 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 1c7595787a1..a3b65b273e5 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -264,21 +264,26 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+         }
+       }
+     } else if (MethodHandles::ref_kind_is_field(ref_kind)) {
+-      Klass* k = (Klass*) java_lang_invoke_MemberName::vmtarget(obj);
++      oop clazz = java_lang_invoke_MemberName::clazz(obj);
++      if (clazz == NULL) {
++        return false;
++      }
++      Klass* k = java_lang_Class::as_Klass(clazz);
+       if (k == NULL) {
+         return false; // Was cleared before, this MemberName is invalid.
+       }
+ 
+-      if (k != NULL && k->new_version() != NULL) {
++      if (k->is_redefining()) {
+         // Let's try to re-resolve field
++        InstanceKlass* old = InstanceKlass::cast(k->old_version());
+         fieldDescriptor fd;
+         int offset = java_lang_invoke_MemberName::vmindex(obj);
+         bool is_static = MethodHandles::ref_kind_is_static(ref_kind);
+-        InstanceKlass* ik = InstanceKlass::cast(k);
+-        if (ik->find_local_field_from_offset(offset, is_static, &fd)) {
+-          InstanceKlass* newest = InstanceKlass::cast(k->newest_version());
++        InstanceKlass* ik_old = InstanceKlass::cast(old);
++        if (ik_old->find_local_field_from_offset(offset, is_static, &fd)) {
++          InstanceKlass* ik_new = InstanceKlass::cast(k->newest_version());
+           fieldDescriptor fd_new;
+-          if (newest->find_local_field(fd.name(), fd.signature(), &fd_new)) {
++          if (ik_new->find_local_field(fd.name(), fd.signature(), &fd_new)) {
+             Handle objHandle(Thread::current(), obj);  // TODO : review thread
+             MethodHandles::init_field_MemberName(objHandle, fd_new, MethodHandles::ref_kind_is_setter(ref_kind));
+           } else {
+@@ -288,7 +293,7 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+             // Eventually, we probably want to replace them with something more meaningful,
+             // like instance throwing NoSuchFieldError or DMH that will resort to dynamic
+             // field resolution (with possibility of type conversion)
+-            java_lang_invoke_MemberName::set_method(obj, NULL);
++            java_lang_invoke_MemberName::set_clazz(obj, NULL);
+             java_lang_invoke_MemberName::set_vmindex(obj, 0);
+             return false;
+           }
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0008-Fix-nonstatic-field-handles.patch

@@ -0,0 +1,43 @@
+From 1fe56253f7e63d69f9a12963316889c5e87111eb Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Sat, 15 Dec 2018 20:16:37 +0100
+Subject: [PATCH 08/50] Fix nonstatic field handles
+
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index a3b65b273e5..c64d6bb1bb5 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -337,6 +337,7 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+     if (obj == NULL) {
+       return;
+     }
++    bool oop_updated  = false;
+     if (obj->is_instance() && InstanceKlass::cast(obj->klass())->is_mirror_instance_klass()) {
+       Klass* klass = java_lang_Class::as_Klass(obj);
+       if (klass != NULL && klass->is_instance_klass()) {
+@@ -344,13 +345,17 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+         if (klass->new_version() != NULL) {
+           obj = InstanceKlass::cast(klass->new_version())->java_mirror();
+           S::oop_store(p, obj);
++          oop_updated = true;
+         }
+       }
+     }
+ 
++
+     // JSR 292 support, uptade java.lang.invoke.MemberName instances
+     if (java_lang_invoke_MemberName::is_instance(obj)) {
+-      update_member_name(obj);
++      if (oop_updated) {
++        update_member_name(obj);
++      }
+     } else if (java_lang_invoke_DirectMethodHandle::is_instance(obj)) {
+       if (!update_direct_method_handle(obj)) {
+         // DMH is no longer valid, replace it with null reference.
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0009-Support-for-Concurrent-Mark-Sweep-CMS-collector.patch

@@ -1,7 +1,7 @@
-From aaefe6f66a8d363eb35fcdc8ce29bb25be67fe1c Mon Sep 17 00:00:00 2001
+From cbe52ffcde1851f2c3527825f37145428aeedc67 Mon Sep 17 00:00:00 2001
 From: skybber <lada.dvorak7@gmail.com>
 Date: Wed, 12 Dec 2018 19:38:28 +0100
-Subject: [PATCH 03/18] Support for Concurrent Mark Sweep (CMS) collector
+Subject: [PATCH 09/50] Support for Concurrent Mark Sweep (CMS) collector
 
 ---
  .../share/gc/cms/compactibleFreeListSpace.cpp | 139 ++++++++++++------
@@ -17,7 +17,7 @@ Subject: [PATCH 03/18] Support for Concurrent Mark Sweep (CMS) collector
  10 files changed, 135 insertions(+), 79 deletions(-)
 
 diff --git a/src/hotspot/share/gc/cms/compactibleFreeListSpace.cpp b/src/hotspot/share/gc/cms/compactibleFreeListSpace.cpp
-index 4c9918627a2..f335173576f 100644
+index a93f764f1b9..efaa09473a9 100644
 --- a/src/hotspot/share/gc/cms/compactibleFreeListSpace.cpp
 +++ b/src/hotspot/share/gc/cms/compactibleFreeListSpace.cpp
 @@ -376,55 +376,58 @@ CompactibleFreeListSpace::CompactibleFreeListSpace(BlockOffsetSharedArray* bs, M
@@ -118,7 +118,7 @@ index 4c9918627a2..f335173576f 100644
      q->forward_to(oop(compact_top));
      assert(q->is_gc_marked(), "encoding the pointer should preserve the mark");
    } else {
-@@ -2209,13 +2212,60 @@ CompactibleFreeListSpace::refillLinearAllocBlock(LinearAllocBlock* blk) {
+@@ -2196,13 +2199,60 @@ CompactibleFreeListSpace::refillLinearAllocBlock(LinearAllocBlock* blk) {
  
  // Support for compaction
  void CompactibleFreeListSpace::prepare_for_compaction(CompactPoint* cp) {
@@ -181,7 +181,7 @@ index 4c9918627a2..f335173576f 100644
  void CompactibleFreeListSpace::adjust_pointers() {
    // In other versions of adjust_pointers(), a bail out
    // based on the amount of live data in the generation
-@@ -2228,7 +2278,12 @@ void CompactibleFreeListSpace::adjust_pointers() {
+@@ -2215,7 +2265,12 @@ void CompactibleFreeListSpace::adjust_pointers() {
  }
  
  void CompactibleFreeListSpace::compact() {
@@ -253,10 +253,10 @@ index d0ff86c8215..b4ed59f020c 100644
      }
      _rescued_oops->clear();
 diff --git a/src/hotspot/share/gc/shared/gcConfig.cpp b/src/hotspot/share/gc/shared/gcConfig.cpp
-index 9779df92447..adb0f5dd25c 100644
+index 8aac2b39e1e..39364a64cb2 100644
 --- a/src/hotspot/share/gc/shared/gcConfig.cpp
 +++ b/src/hotspot/share/gc/shared/gcConfig.cpp
-@@ -106,7 +106,7 @@ void GCConfig::fail_if_unsupported_gc_is_selected() {
+@@ -101,7 +101,7 @@ void GCConfig::fail_if_unsupported_gc_is_selected() {
  }
  
  void GCConfig::select_gc_ergonomically() {
@@ -266,7 +266,7 @@ index 9779df92447..adb0f5dd25c 100644
      FLAG_SET_ERGO(bool, UseSerialGC, true);
    } else if (os::is_server_class_machine()) {
 diff --git a/src/hotspot/share/gc/shared/space.cpp b/src/hotspot/share/gc/shared/space.cpp
-index bc0dd1980db..56b144b46f1 100644
+index 763abc91a39..947dff8ae0c 100644
 --- a/src/hotspot/share/gc/shared/space.cpp
 +++ b/src/hotspot/share/gc/shared/space.cpp
 @@ -388,11 +388,11 @@ HeapWord* CompactibleSpace::forward_compact_top(size_t size, CompactPoint* cp, H
@@ -301,7 +301,7 @@ index bc0dd1980db..56b144b46f1 100644
    size_t forward_size = size;
  
    // (DCEVM) There is a new version of the class of q => different size
-   if (oop(q)->klass()->new_version() != NULL) {
+   if (oop(q)->klass()->new_version() != NULL && oop(q)->klass()->new_version()->update_information() != NULL) {
  
      size_t new_size = oop(q)->size_given_klass(oop(q)->klass()->new_version());
 -    assert(size != new_size, "instances without changed size have to be updated prior to GC run");
@@ -360,7 +360,7 @@ index 8eb5669fb79..901c89d8a30 100644
    HeapWord* forward_rescued(CompactPoint* cp, HeapWord* compact_top);
  
 diff --git a/src/hotspot/share/gc/shared/space.inline.hpp b/src/hotspot/share/gc/shared/space.inline.hpp
-index 6b109fcd2e5..8c255d6d428 100644
+index 75d7e685edf..26e56ae6f7e 100644
 --- a/src/hotspot/share/gc/shared/space.inline.hpp
 +++ b/src/hotspot/share/gc/shared/space.inline.hpp
 @@ -163,6 +163,8 @@ inline void CompactibleSpace::scan_and_forward(SpaceType* space, CompactPoint* c
@@ -402,7 +402,7 @@ index 6b109fcd2e5..8c255d6d428 100644
          end_of_live = end;
        } else {
          // otherwise, it really is a free region.
-@@ -352,7 +355,7 @@ inline void CompactibleSpace::scan_and_compact(SpaceType* space, bool redefiniti
+@@ -351,7 +354,7 @@ inline void CompactibleSpace::scan_and_compact(SpaceType* space, bool redefiniti
        HeapWord* compaction_top = (HeapWord*)oop(cur_obj)->forwardee();
  
        if (redefinition_run &&  space->must_rescue(oop(cur_obj), oop(cur_obj)->forwardee())) {
@@ -411,7 +411,7 @@ index 6b109fcd2e5..8c255d6d428 100644
          debug_only(Copy::fill_to_words(cur_obj, size, 0));
          cur_obj += size;
          continue;
-@@ -362,8 +365,7 @@ inline void CompactibleSpace::scan_and_compact(SpaceType* space, bool redefiniti
+@@ -361,8 +364,7 @@ inline void CompactibleSpace::scan_and_compact(SpaceType* space, bool redefiniti
        Prefetch::write(compaction_top, copy_interval);
  
        // copy object and reinit its mark
@@ -422,10 +422,10 @@ index 6b109fcd2e5..8c255d6d428 100644
          Klass* new_version = oop(cur_obj)->klass()->new_version();
          if (new_version->update_information() == NULL) {
 diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-index 43d761cdbb2..14af1aad21b 100644
+index c64d6bb1bb5..9b8678a53fb 100644
 --- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
 +++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-@@ -54,6 +54,7 @@
+@@ -52,6 +52,7 @@
  #include "prims/jvmtiThreadState.inline.hpp"
  #include "utilities/events.hpp"
  #include "oops/constantPool.inline.hpp"
@@ -433,7 +433,7 @@ index 43d761cdbb2..14af1aad21b 100644
  
  Array<Method*>* VM_EnhancedRedefineClasses::_old_methods = NULL;
  Array<Method*>* VM_EnhancedRedefineClasses::_new_methods = NULL;
-@@ -416,13 +417,11 @@ public:
+@@ -420,13 +421,11 @@ public:
        Klass* new_klass = obj->klass()->new_version();
  
        if (new_klass->update_information() != NULL) {
@@ -449,7 +449,7 @@ index 43d761cdbb2..14af1aad21b 100644
            oop src = obj;
            if (new_klass->is_copying_backwards()) {
              copy_to_tmp(obj);
-@@ -432,11 +431,6 @@ public:
+@@ -436,11 +435,6 @@ public:
            //  FIXME: instance updates...
            //guarantee(false, "instance updates!");
            MarkSweep::update_fields(obj, src, new_klass->update_information());
@@ -462,10 +462,10 @@ index 43d761cdbb2..14af1aad21b 100644
        } else {
          obj->set_klass(obj->klass()->new_version());
 diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
-index a11dfe48dd6..013ba213c00 100644
+index ca57b524593..2ca6dde069d 100644
 --- a/src/hotspot/share/runtime/arguments.cpp
 +++ b/src/hotspot/share/runtime/arguments.cpp
-@@ -2045,14 +2045,14 @@ bool Arguments::check_gc_consistency() {
+@@ -2047,14 +2047,14 @@ bool Arguments::check_gc_consistency() {
    if (AllowEnhancedClassRedefinition) {
      // Must use serial GC. This limitation applies because the instance size changing GC modifications
      // are only built into the mark and compact algorithm.
@@ -484,5 +484,5 @@ index a11dfe48dd6..013ba213c00 100644
                  "Conflicting collector combinations in option list; "
                  "please refer to the release notes for the combinations "
 -- 
-2.23.0
+2.24.3 (Apple Git-128)
 

jb/project/tools/patches/dcevm/0010-Change-log-level-in-advanced-redefinition.patch

@@ -1,50 +0,0 @@
-From b6ea0ee6fcc376f575be0f461c494664d55ed986 Mon Sep 17 00:00:00 2001
-From: Vladimir Dvorak <lada.dvorak7@gmail.com>
-Date: Sat, 13 Jun 2020 18:50:59 +0200
-Subject: [PATCH 10/18] Change log level in advanced redefinition
-
-- Change log level for "Comparing different class ver.." to debug
-- Fix adjust_method_entries_dcevm logging levels and severity
----
- src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp | 2 +-
- src/hotspot/share/prims/resolvedMethodTable.cpp          | 4 ++--
- 2 files changed, 3 insertions(+), 3 deletions(-)
-
-diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-index 8b6fad2128e..a8adfa5af47 100644
---- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-+++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-@@ -915,7 +915,7 @@ jvmtiError VM_EnhancedRedefineClasses::load_new_class_versions(TRAPS) {
-  // Calculated the difference between new and old class  (field change, method change, supertype change, ...).
- int VM_EnhancedRedefineClasses::calculate_redefinition_flags(InstanceKlass* new_class) {
-   int result = Klass::NoRedefinition;
--  log_info(redefine, class, load)("Comparing different class versions of class %s",new_class->name()->as_C_string());
-+  log_debug(redefine, class, load)("Comparing different class versions of class %s",new_class->name()->as_C_string());
- 
-   assert(new_class->old_version() != NULL, "must have old version");
-   InstanceKlass* the_class = InstanceKlass::cast(new_class->old_version());
-diff --git a/src/hotspot/share/prims/resolvedMethodTable.cpp b/src/hotspot/share/prims/resolvedMethodTable.cpp
-index 06581643c3b..10806bee29b 100644
---- a/src/hotspot/share/prims/resolvedMethodTable.cpp
-+++ b/src/hotspot/share/prims/resolvedMethodTable.cpp
-@@ -270,7 +270,7 @@ void ResolvedMethodTable::adjust_method_entries_dcevm(bool * trace_name_printed)
-         } else {
-           newer_method = newer_klass->method_with_idnum(old_method->orig_method_idnum());
- 
--          log_info(redefine, class, load, exceptions)("Adjusting method: '%s' of new class %s", newer_method->name_and_sig_as_C_string(), newer_klass->name()->as_C_string());
-+          log_debug(redefine, class, update)("Adjusting method: '%s' of new class %s", newer_method->name_and_sig_as_C_string(), newer_klass->name()->as_C_string());
- 
-           assert(newer_klass == newer_method->method_holder(), "call after swapping redefined guts");
-           assert(newer_method != NULL, "method_with_idnum() should not be NULL");
-@@ -290,7 +290,7 @@ void ResolvedMethodTable::adjust_method_entries_dcevm(bool * trace_name_printed)
- 
-         ResourceMark rm;
-         if (!(*trace_name_printed)) {
--          log_info(redefine, class, update)("adjust: name=%s", old_method->method_holder()->external_name());
-+          log_debug(redefine, class, update)("adjust: name=%s", old_method->method_holder()->external_name());
-            *trace_name_printed = true;
-         }
-         log_debug(redefine, class, update, constantpool)
--- 
-2.23.0
-

jb/project/tools/patches/dcevm/0010-Code-cleanup.patch

@@ -0,0 +1,257 @@
+From 11d10158d77512795b1b8ab8378620b95b67f175 Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Sat, 29 Dec 2018 13:22:29 +0100
+Subject: [PATCH 10/50] Code cleanup
+
+---
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 125 ++++++------------
+ .../prims/jvmtiEnhancedRedefineClasses.hpp    |   3 -
+ 2 files changed, 40 insertions(+), 88 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 9b8678a53fb..0aa1ac4ff80 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -35,7 +35,7 @@
+ #include "memory/metaspaceShared.hpp"
+ #include "memory/resourceArea.hpp"
+ #include "memory/iterator.inline.hpp"
+-#include "gc/serial/markSweep.hpp" // FIXME: other GC?
++#include "gc/serial/markSweep.hpp"
+ #include "oops/fieldStreams.hpp"
+ #include "oops/klassVtable.hpp"
+ #include "oops/oop.inline.hpp"
+@@ -485,7 +485,9 @@ void VM_EnhancedRedefineClasses::doit() {
+   }
+ 
+   // Deoptimize all compiled code that depends on this class (do only once, because it clears whole cache)
+-  flush_dependent_code(NULL, thread);
++  //if (_max_redefinition_flags > Klass::ModifyClass) {
++    flush_dependent_code(NULL, thread);
++  //}
+ 
+   // JSR-292 support
+   if (_any_class_has_resolved_methods) {
+@@ -593,17 +595,28 @@ void VM_EnhancedRedefineClasses::doit() {
+   // See jvmtiExport.hpp for detailed explanation.
+   JvmtiExport::set_has_redefined_a_class();
+ 
+-  // check_class() is optionally called for product bits, but is
+-  // always called for non-product bits.
+ #ifdef PRODUCT
+   if (log_is_enabled(Trace, redefine, class, obsolete, metadata)) {
+ #endif
+-    log_trace(redefine, class, obsolete, metadata)("calling check_class");
+-    CheckClass check_class(thread);
+-    ClassLoaderDataGraph::classes_do(&check_class);
++  for (int i=0; i<_affected_klasses->length(); i++) {
++    Klass* the_class = _affected_klasses->at(i);
++    assert(the_class->new_version() != NULL, "Must have been redefined");
++    Klass* new_version = the_class->new_version();
++    assert(new_version->new_version() == NULL, "Must be newest version");
++
++    if (!(new_version->super() == NULL || new_version->super()->new_version() == NULL)) {
++      new_version->print();
++      new_version->super()->print();
++    }
++    assert(new_version->super() == NULL || new_version->super()->new_version() == NULL, "Super class must be newest version");
++  }
++  log_trace(redefine, class, obsolete, metadata)("calling check_class");
++  CheckClass check_class(thread);
++  ClassLoaderDataGraph::classes_do(&check_class);
+ #ifdef PRODUCT
+   }
+ #endif
++
+ }
+ 
+ /**
+@@ -1279,24 +1292,23 @@ void VM_EnhancedRedefineClasses::calculate_instance_update_information(Klass* ne
+   GrowableArray<int> result = cl.finish();
+   ik->store_update_information(result);
+   ik->set_copying_backwards(cl.does_copy_backwards());
+-/* TODO logging
+-  if (RC_TRACE_ENABLED(0x00000001)) {
+-    RC_TRACE(0x00000001, ("Instance update information for %s:", new_version->name()->as_C_string()));
++  if (log_is_enabled(Trace, redefine, class, obsolete, metadata)) {
++    log_trace(redefine, class, obsolete, metadata)("Instance update information for %s:", new_version->name()->as_C_string());
+     if (cl.does_copy_backwards()) {
+-      RC_TRACE(0x00000001, ("\tDoes copy backwards!"));
++      log_trace(redefine, class, obsolete, metadata)("\tDoes copy backwards!");
+     }
+     for (int i=0; i<result.length(); i++) {
+       int curNum = result.at(i);
+       if (curNum < 0) {
+-        RC_TRACE(0x00000001, ("\t%d CLEAN", curNum));
++        log_trace(redefine, class, obsolete, metadata)("\t%d CLEAN", curNum);
+       } else if (curNum > 0) {
+-        RC_TRACE(0x00000001, ("\t%d COPY from %d", curNum, result.at(i + 1)));
++        log_trace(redefine, class, obsolete, metadata)("\t%d COPY from %d", curNum, result.at(i + 1));
+         i++;
+       } else {
+-        RC_TRACE(0x00000001, ("\tEND"));
++        log_trace(redefine, class, obsolete, metadata)("\tEND");
+       }
+     }
+-  }*/
++  }
+ }
+ 
+ /**
+@@ -1813,6 +1825,7 @@ void VM_EnhancedRedefineClasses::compute_added_deleted_matching_methods() {
+ /**
+   FIXME - swap_annotations is never called, check that annotations work
+ */
++// TODO : delete it
+ void VM_EnhancedRedefineClasses::swap_annotations(InstanceKlass* the_class,
+                                           InstanceKlass* new_class) {
+   // FIXME - probably original implementation only 
+@@ -1822,7 +1835,6 @@ void VM_EnhancedRedefineClasses::swap_annotations(InstanceKlass* the_class,
+   new_class->set_annotations(old_annotations);
+ }
+ 
+-
+ // Install the redefinition of a class:
+ //    - house keeping (flushing breakpoints and caches, deoptimizing
+ //      dependent compiled code)
+@@ -1853,7 +1865,9 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+ 
+   // DCEVM Deoptimization is always for whole java world, call only once after all classes are redefined
+   // Deoptimize all compiled code that depends on this class
+-  //  flush_dependent_code(the_class, THREAD);
++  //if (_max_redefinition_flags <= Klass::ModifyClass) {
++    //flush_dependent_code(the_class, THREAD);
++  //}
+ 
+   _old_methods = the_class->methods();
+   _new_methods = new_class->methods();
+@@ -1928,64 +1942,15 @@ void VM_EnhancedRedefineClasses::increment_class_counter(InstanceKlass *ik, TRAP
+   }
+ }
+ 
+-// FIXME - class check is currently disabled
+ void VM_EnhancedRedefineClasses::CheckClass::do_klass(Klass* k) {
+-  return;
+-  bool no_old_methods = true;  // be optimistic
+-
+-  // Both array and instance classes have vtables.
+-  // a vtable should never contain old or obsolete methods
+-  ResourceMark rm(_thread);
+-  if (k->vtable_length() > 0 &&
+-      !k->vtable().check_no_old_or_obsolete_entries()) {
+-    if (log_is_enabled(Trace, redefine, class, obsolete, metadata)) {
+-      log_trace(redefine, class, obsolete, metadata)
+-        ("klassVtable::check_no_old_or_obsolete_entries failure -- OLD or OBSOLETE method found -- class: %s",
+-         k->signature_name());
+-      k->vtable().dump_vtable();
+-    }
+-    no_old_methods = false;
+-  }
+-
+-  if (k->is_instance_klass()) {
+-    HandleMark hm(_thread);
+-    InstanceKlass *ik = InstanceKlass::cast(k);
++  HandleMark hm(_thread);
++  InstanceKlass *ik = (InstanceKlass *) k;
++  assert(ik->new_version() == NULL, "must be latest version in system dictionary");
+ 
+-    // an itable should never contain old or obsolete methods
+-    if (ik->itable_length() > 0 &&
+-        !ik->itable().check_no_old_or_obsolete_entries()) {
+-      if (log_is_enabled(Trace, redefine, class, obsolete, metadata)) {
+-        log_trace(redefine, class, obsolete, metadata)
+-          ("klassItable::check_no_old_or_obsolete_entries failure -- OLD or OBSOLETE method found -- class: %s",
+-           ik->signature_name());
+-        ik->itable().dump_itable();
+-      }
+-      no_old_methods = false;
+-    }
+-
+-    // the constant pool cache should never contain non-deleted old or obsolete methods
+-    if (ik->constants() != NULL &&
+-        ik->constants()->cache() != NULL &&
+-        !ik->constants()->cache()->check_no_old_or_obsolete_entries()) {
+-      if (log_is_enabled(Trace, redefine, class, obsolete, metadata)) {
+-        log_trace(redefine, class, obsolete, metadata)
+-          ("cp-cache::check_no_old_or_obsolete_entries failure -- OLD or OBSOLETE method found -- class: %s",
+-           ik->signature_name());
+-        ik->constants()->cache()->dump_cache();
+-      }
+-      no_old_methods = false;
+-    }
+-  }
+-
+-  // print and fail guarantee if old methods are found.
+-  if (!no_old_methods) {
+-    if (log_is_enabled(Trace, redefine, class, obsolete, metadata)) {
+-      dump_methods();
+-    } else {
+-      log_trace(redefine, class)("Use the '-Xlog:redefine+class*:' option "
+-        "to see more info about the following guarantee() failure.");
+-    }
+-    guarantee(false, "OLD and/or OBSOLETE method(s) found");
++  if (ik->vtable_length() > 0) {
++    ResourceMark rm(_thread);
++    assert(ik->vtable().check_no_old_or_obsolete_entries(), "old method found");
++    ik->vtable().verify(tty, true);
+   }
+ }
+ 
+@@ -2051,15 +2016,6 @@ void VM_EnhancedRedefineClasses::dump_methods() {
+   }
+ }
+ 
+-// TODO - is it called anywhere?
+-void VM_EnhancedRedefineClasses::print_on_error(outputStream* st) const {
+-  VM_Operation::print_on_error(st);
+-  if (_the_class_oop != NULL) {
+-    ResourceMark rm;
+-    st->print_cr(", redefining class %s", _the_class_oop->external_name());
+-  }
+-}
+-
+ /**
+  Helper class to traverse all loaded classes and figure out if the class is affected by redefinition.
+ */
+@@ -2093,7 +2049,7 @@ class AffectedKlassClosure : public KlassClosure {
+         log_trace(redefine, class, load)("found affected class: %s", klass->name()->as_C_string());
+         klass->set_redefinition_flag(Klass::MarkedAsAffected);
+         _affected_klasses->append(klass);
+-         return;
++        return;
+       }
+     }
+ 
+@@ -2125,7 +2081,7 @@ jvmtiError VM_EnhancedRedefineClasses::find_sorted_affected_classes(TRAPS) {
+ 
+   // Find classes not directly redefined, but affected by a redefinition (because one of its supertypes is redefined)
+   AffectedKlassClosure closure(_affected_klasses);
+-  // TODO: j10 - review chancge from SystemDictionary::classes_do(&closure);
++  // Updated in j10, from original SystemDictionary::classes_do
+   ClassLoaderDataGraph::dictionary_classes_do(&closure);
+   log_trace(redefine, class, load)("%d classes affected", _affected_klasses->length());
+ 
+@@ -2160,7 +2116,6 @@ static bool match_second(void* value, KlassPair elem) {
+  For each class to be redefined parse the bytecode and figure out the superclass and all interfaces.
+  First newly introduced classes (_class_defs) are scanned and then affected classed (_affected_klasses).
+  Affected flag is cleared (clear_redefinition_flag(Klass::MarkedAsAffected))
+-
+  For each dependency create a KlassPair instance. Finnaly, affected classes (_affected_klasses) are sorted according to pairs.
+  
+  TODO - the class file is potentionally parsed multiple times - introduce a cache?
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+index b712d69a193..37e63a1810f 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+@@ -195,8 +195,5 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+   // Modifiable test must be shared between IsModifiableClass query
+   // and redefine implementation
+   static bool is_modifiable_class(oop klass_mirror);
+-
+-  // Error printing
+-  void print_on_error(outputStream* st) const;
+ };
+ #endif // SHARE_VM_PRIMS_JVMTIREDEFINECLASSES2_HPP
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0011-AllowEnhancedClassRedefinition-is-false-disabled-by-.patch

@@ -1,26 +0,0 @@
-From ef1098751c596a03fd1721affc20d221b3544d37 Mon Sep 17 00:00:00 2001
-From: Vladimir Dvorak <lada.dvorak7@gmail.com>
-Date: Tue, 6 Oct 2020 22:15:31 +0200
-Subject: [PATCH 11/18] AllowEnhancedClassRedefinition is false (disabled) by
- default
-
----
- src/hotspot/share/runtime/globals.hpp | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/hotspot/share/runtime/globals.hpp b/src/hotspot/share/runtime/globals.hpp
-index b8dba232fc1..d4453de1ff5 100644
---- a/src/hotspot/share/runtime/globals.hpp
-+++ b/src/hotspot/share/runtime/globals.hpp
-@@ -2682,7 +2682,7 @@ define_pd_global(uint64_t,MaxRAM,                    1ULL*G);
-   experimental(bool, UseFastUnorderedTimeStamps, false,                     \
-           "Use platform unstable time where supported for timestamps only") \
-                                                                             \
--  product(bool, AllowEnhancedClassRedefinition, true,                       \
-+  product(bool, AllowEnhancedClassRedefinition, false,                      \
-              "Allow enhanced class redefinition beyond swapping method "    \
-              "bodies")                                                      \
-                                                                             \
--- 
-2.23.0
-

jb/project/tools/patches/dcevm/0011-Fix-check_class.patch

@@ -0,0 +1,118 @@
+From 1765f4c1b2e8958b458fa17d329be98ad025069c Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Sat, 29 Dec 2018 16:05:25 +0100
+Subject: [PATCH 11/50] Fix check_class
+
+---
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 39 +++++++------------
+ .../prims/jvmtiEnhancedRedefineClasses.hpp    |  5 +--
+ 2 files changed, 16 insertions(+), 28 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 0aa1ac4ff80..c08b3e82b2e 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -1,4 +1,4 @@
+-/*
++  /*
+  * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
+  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+  *
+@@ -28,6 +28,7 @@
+ #include "classfile/metadataOnStackMark.hpp"
+ #include "classfile/systemDictionary.hpp"
+ #include "classfile/verifier.hpp"
++#include "classfile/dictionary.hpp"
+ #include "interpreter/oopMapCache.hpp"
+ #include "interpreter/rewriter.hpp"
+ #include "logging/logStream.hpp"
+@@ -611,8 +612,7 @@ void VM_EnhancedRedefineClasses::doit() {
+     assert(new_version->super() == NULL || new_version->super()->new_version() == NULL, "Super class must be newest version");
+   }
+   log_trace(redefine, class, obsolete, metadata)("calling check_class");
+-  CheckClass check_class(thread);
+-  ClassLoaderDataGraph::classes_do(&check_class);
++  ClassLoaderData::the_null_class_loader_data()->dictionary()->classes_do(check_class, thread);
+ #ifdef PRODUCT
+   }
+ #endif
+@@ -1822,19 +1822,6 @@ void VM_EnhancedRedefineClasses::compute_added_deleted_matching_methods() {
+   assert(_matching_methods_length + _added_methods_length == _new_methods->length(), "sanity");
+ }
+ 
+-/**
+-  FIXME - swap_annotations is never called, check that annotations work
+-*/
+-// TODO : delete it
+-void VM_EnhancedRedefineClasses::swap_annotations(InstanceKlass* the_class,
+-                                          InstanceKlass* new_class) {
+-  // FIXME - probably original implementation only 
+-  // Swap annotation fields values
+-  Annotations* old_annotations = the_class->annotations();
+-  the_class->set_annotations(new_class->annotations());
+-  new_class->set_annotations(old_annotations);
+-}
+-
+ // Install the redefinition of a class:
+ //    - house keeping (flushing breakpoints and caches, deoptimizing
+ //      dependent compiled code)
+@@ -1942,15 +1929,17 @@ void VM_EnhancedRedefineClasses::increment_class_counter(InstanceKlass *ik, TRAP
+   }
+ }
+ 
+-void VM_EnhancedRedefineClasses::CheckClass::do_klass(Klass* k) {
+-  HandleMark hm(_thread);
+-  InstanceKlass *ik = (InstanceKlass *) k;
+-  assert(ik->new_version() == NULL, "must be latest version in system dictionary");
++void VM_EnhancedRedefineClasses::check_class(InstanceKlass* ik, TRAPS) {
++  if (ik->is_instance_klass() && ik->old_version() != NULL) {
++    HandleMark hm(THREAD);
++
++    assert(ik->new_version() == NULL, "must be latest version in system dictionary");
+ 
+-  if (ik->vtable_length() > 0) {
+-    ResourceMark rm(_thread);
+-    assert(ik->vtable().check_no_old_or_obsolete_entries(), "old method found");
+-    ik->vtable().verify(tty, true);
++    if (ik->vtable_length() > 0) {
++      ResourceMark rm(THREAD);
++      assert(ik->vtable().check_no_old_or_obsolete_entries(), "old method found");
++      ik->vtable().verify(tty, true);
++    }
+   }
+ }
+ 
+@@ -2017,7 +2006,7 @@ void VM_EnhancedRedefineClasses::dump_methods() {
+ }
+ 
+ /**
+- Helper class to traverse all loaded classes and figure out if the class is affected by redefinition.
++  Helper class to traverse all loaded classes and figure out if the class is affected by redefinition.
+ */
+ class AffectedKlassClosure : public KlassClosure {
+  private:
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+index 37e63a1810f..5b3ebc13661 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+@@ -144,15 +144,14 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+   // Install the redefinition of a class
+   void redefine_single_class(InstanceKlass* new_class_oop, TRAPS);
+ 
+-  void swap_annotations(InstanceKlass* new_class,
+-                        InstanceKlass* scratch_class);
+-
+   // Increment the classRedefinedCount field in the specific InstanceKlass
+   // and in all direct and indirect subclasses.
+   void increment_class_counter(InstanceKlass *ik, TRAPS);
+ 
+   void flush_dependent_code(InstanceKlass* k_h, TRAPS);
+ 
++  static void check_class(InstanceKlass* k_oop, TRAPS);
++
+   static void dump_methods();
+ 
+   // Check that there are no old or obsolete methods
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0012-Fix-force_forward-in-dead-space.patch

@@ -0,0 +1,24 @@
+From 0851d437a65dc9ac6d8355b54689d36e77e104b3 Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Sat, 29 Dec 2018 17:58:39 +0100
+Subject: [PATCH 12/50] Fix force_forward in dead space
+
+---
+ src/hotspot/share/gc/shared/space.inline.hpp | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/hotspot/share/gc/shared/space.inline.hpp b/src/hotspot/share/gc/shared/space.inline.hpp
+index 26e56ae6f7e..8c255d6d428 100644
+--- a/src/hotspot/share/gc/shared/space.inline.hpp
++++ b/src/hotspot/share/gc/shared/space.inline.hpp
+@@ -213,6 +213,7 @@ inline void CompactibleSpace::scan_and_forward(SpaceType* space, CompactPoint* c
+         // see if this is the first dead region.
+         if (first_dead == NULL) {
+           first_dead = cur_obj;
++          force_forward = true;
+         }
+       }
+ 
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0013-Cleanup.patch

@@ -0,0 +1,25 @@
+From 35aba247d8a3e25f5d19403ba5f293bfdaf6539c Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Fri, 1 Mar 2019 18:45:13 +0100
+Subject: [PATCH 13/50] Cleanup
+
+---
+ src/hotspot/share/gc/shared/space.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/gc/shared/space.cpp b/src/hotspot/share/gc/shared/space.cpp
+index 947dff8ae0c..56b144b46f1 100644
+--- a/src/hotspot/share/gc/shared/space.cpp
++++ b/src/hotspot/share/gc/shared/space.cpp
+@@ -862,7 +862,7 @@ HeapWord* CompactibleSpace::forward_with_rescue(HeapWord* q, size_t size,
+   size_t forward_size = size;
+ 
+   // (DCEVM) There is a new version of the class of q => different size
+-  if (oop(q)->klass()->new_version() != NULL && oop(q)->klass()->new_version()->update_information() != NULL) {
++  if (oop(q)->klass()->new_version() != NULL) {
+ 
+     size_t new_size = oop(q)->size_given_klass(oop(q)->klass()->new_version());
+     // assert(size != new_size, "instances without changed size have to be updated prior to GC run");
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0014-Add-codecache-flush-optimization-but-just-flush-all-.patch

@@ -0,0 +1,61 @@
+From 26a5079eb61a2e23328fbd8ca59ffc2ab6b6193b Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Sat, 29 Dec 2018 17:38:27 +0100
+Subject: [PATCH 14/50] Add codecache flush optimization, but just flush all
+ cache.
+
+Redefined class can define a new method that overrides
+method in superclass which is already used in codecache for
+optimized non-virtual calls, etc...
+---
+ .../prims/jvmtiEnhancedRedefineClasses.cpp     | 18 ++++++++++++------
+ 1 file changed, 12 insertions(+), 6 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index c08b3e82b2e..4ca638548dc 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -486,9 +486,9 @@ void VM_EnhancedRedefineClasses::doit() {
+   }
+ 
+   // Deoptimize all compiled code that depends on this class (do only once, because it clears whole cache)
+-  //if (_max_redefinition_flags > Klass::ModifyClass) {
++  // if (_max_redefinition_flags > Klass::ModifyClass) {
+     flush_dependent_code(NULL, thread);
+-  //}
++  // }
+ 
+   // JSR-292 support
+   if (_any_class_has_resolved_methods) {
+@@ -1736,8 +1736,14 @@ void VM_EnhancedRedefineClasses::flush_dependent_code(InstanceKlass* k_h, TRAPS)
+   // All dependencies have been recorded from startup or this is a second or
+   // subsequent use of RedefineClasses
+   // FIXME: for now, deoptimize all!
+-  if (0 && JvmtiExport::all_dependencies_are_recorded()) {
++  if (0 && k_h != NULL && JvmtiExport::all_dependencies_are_recorded()) {
+     CodeCache::flush_evol_dependents_on(k_h);
++    Klass* superCl = k_h->super();
++    // Deoptimize super classes since redefined class can has a new method override
++    while (superCl != NULL && !superCl->is_redefining()) {
++      CodeCache::flush_evol_dependents_on(InstanceKlass::cast(superCl));
++      superCl = superCl->super();
++    }
+   } else {
+     CodeCache::mark_all_nmethods_for_deoptimization();
+ 
+@@ -1852,9 +1858,9 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+ 
+   // DCEVM Deoptimization is always for whole java world, call only once after all classes are redefined
+   // Deoptimize all compiled code that depends on this class
+-  //if (_max_redefinition_flags <= Klass::ModifyClass) {
+-    //flush_dependent_code(the_class, THREAD);
+-  //}
++//  if (_max_redefinition_flags <= Klass::ModifyClass) {
++//    flush_dependent_code(the_class, THREAD);
++//  }
+ 
+   _old_methods = the_class->methods();
+   _new_methods = new_class->methods();
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0014-Fix-G1-nmethod-registration.patch

@@ -1,71 +0,0 @@
-From 122562d31005edd3573a645c3a02c1d8fe843c5e Mon Sep 17 00:00:00 2001
-From: Vladimir Dvorak <lada.dvorak7@gmail.com>
-Date: Sun, 11 Oct 2020 10:43:28 +0200
-Subject: [PATCH 14/18] Fix G1 nmethod registration
-
----
- .../prims/jvmtiEnhancedRedefineClasses.cpp    | 19 ++++++++++++++++---
- .../prims/jvmtiEnhancedRedefineClasses.hpp    |  3 ++-
- 2 files changed, 18 insertions(+), 4 deletions(-)
-
-diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-index a8adfa5af47..4ee12b7021f 100644
---- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-+++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-@@ -217,7 +217,14 @@ void VM_EnhancedRedefineClasses::mark_as_scavengable(nmethod* nm) {
-   }
- }
- 
--void VM_EnhancedRedefineClasses::mark_as_scavengable_g1(nmethod* nm) {
-+void VM_EnhancedRedefineClasses::unregister_nmethod_g1(nmethod* nm) {
-+  // It should work not only for G1 but also for another GCs, but this way is safer now
-+  if (!nm->is_zombie() && !nm->is_unloaded()) {
-+    Universe::heap()->unregister_nmethod(nm);
-+  }
-+}
-+
-+void VM_EnhancedRedefineClasses::register_nmethod_g1(nmethod* nm) {
-   // It should work not only for G1 but also for another GCs, but this way is safer now
-   if (!nm->is_zombie() && !nm->is_unloaded()) {
-     Universe::heap()->register_nmethod(nm);
-@@ -520,8 +527,9 @@ void VM_EnhancedRedefineClasses::doit() {
-     // For now, mark all nmethod's as scavengable that are not scavengable already
-     if (ScavengeRootsInCode) {
-       if (UseG1GC) {
--        // this should work also for other GCs
--        CodeCache::nmethods_do(mark_as_scavengable_g1);
-+        // G1 holds references to nmethods in regions based on oops values. Since oops in nmethod can be changed in ChangePointers* closures
-+        // we unregister nmethods from G1 heap, then closures are processed (oops are changed) and finally we register nmethod to G1 again
-+        CodeCache::nmethods_do(unregister_nmethod_g1);
-       } else {
-         CodeCache::nmethods_do(mark_as_scavengable);
-       }
-@@ -544,6 +552,11 @@ void VM_EnhancedRedefineClasses::doit() {
- 
-     Universe::root_oops_do(&oopClosureNoBarrier);
- 
-+    if (UseG1GC) {
-+      // this should work also for other GCs
-+      CodeCache::nmethods_do(register_nmethod_g1);
-+    }
-+
-   }
-   log_trace(redefine, class, obsolete, metadata)("After updating instances");
- 
-diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
-index 62a0fbf54d4..d00109a0b92 100644
---- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
-+++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
-@@ -116,7 +116,8 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
- 
-   void rollback();
-   static void mark_as_scavengable(nmethod* nm);
--  static void mark_as_scavengable_g1(nmethod* nm);
-+  static void unregister_nmethod_g1(nmethod* nm);
-+  static void register_nmethod_g1(nmethod* nm);
-   static void unpatch_bytecode(Method* method);
-   static void fix_invoke_method(Method* method);
- 
--- 
-2.23.0
-

jb/project/tools/patches/dcevm/0015-HotswapAgent-integration.patch

@@ -1,7 +1,7 @@
-From a00292280f4e3754bffc7a0c562dca1d7552eb39 Mon Sep 17 00:00:00 2001
+From 24a60477aef7098ea23ab50a573332957741ea7b Mon Sep 17 00:00:00 2001
 From: skybber <lada.dvorak7@gmail.com>
 Date: Wed, 14 Nov 2018 21:20:08 +0100
-Subject: [PATCH 05/18] HotswapAgent integration
+Subject: [PATCH 15/50] HotswapAgent integration
 
 It include:
 
@@ -9,25 +9,16 @@ It include:
 to CFLAGS (bash configure --with-extra-cflags="-DDCEVM_ONLY"), by
 default compilation goes with HotswapAgent
 
-Allow ha class initializer calls
-
 Add --add-opens for necessary modules/packages
 - java.base/java.lang - for reflection access to Proxy.proxyCache
 - java.base/jdk.internal.loader - for access proxyCache class
 - java.desktop/java.beans - for reflection access to Introspector
-- java.desktop/com.sun.beans
-- java.base/java.io
-- com.sun.beans.util
-
-Open jdk module to access ClassInfo.CACHE
 
 - be quiet if HotswapAgent is not found in lib/, it is compatible with
 old DCEVM
-- disable HotswapAgent for -Xshare:dump
+- disable hotswapagent for -Xshare:dump
 - disable HotswapAgent in jvm tools
-- disable HotswapAgent in keytool
 ---
- make/launcher/Launcher-java.base.gmk          |  1 +
  make/launcher/Launcher-java.rmi.gmk           |  2 +
  make/launcher/Launcher-java.scripting.gmk     |  3 +-
  make/launcher/Launcher-java.security.jgss.gmk |  3 +
@@ -46,32 +37,11 @@ old DCEVM
  make/launcher/Launcher-jdk.pack.gmk           |  1 +
  make/launcher/Launcher-jdk.rmic.gmk           |  1 +
  .../Launcher-jdk.scripting.nashorn.shell.gmk  |  3 +-
- src/hotspot/share/classfile/vmSymbols.hpp     |  1 +
- .../share/interpreter/linkResolver.cpp        |  2 +-
- src/hotspot/share/runtime/arguments.cpp       | 67 +++++++++++++++++++
+ src/hotspot/share/runtime/arguments.cpp       | 59 +++++++++++++++++++
  src/hotspot/share/runtime/arguments.hpp       |  3 +
  src/hotspot/share/runtime/globals.hpp         | 12 +++-
- .../sun/beans/introspect/package-info.java    | 26 +++++++
- .../classes/com/sun/beans/package-info.java   | 26 +++++++
- .../com/sun/beans/util/package-info.java      | 26 +++++++
- .../share/classes/module-info.java            |  3 +
- 28 files changed, 209 insertions(+), 11 deletions(-)
- create mode 100644 src/java.desktop/share/classes/com/sun/beans/introspect/package-info.java
- create mode 100644 src/java.desktop/share/classes/com/sun/beans/package-info.java
- create mode 100644 src/java.desktop/share/classes/com/sun/beans/util/package-info.java
+ 21 files changed, 117 insertions(+), 10 deletions(-)
 
-diff --git a/make/launcher/Launcher-java.base.gmk b/make/launcher/Launcher-java.base.gmk
-index f6d4aa28fe6..38ba29530d8 100644
---- a/make/launcher/Launcher-java.base.gmk
-+++ b/make/launcher/Launcher-java.base.gmk
-@@ -52,6 +52,7 @@ endif
- 
- $(eval $(call SetupBuildLauncher, keytool, \
-     MAIN_CLASS := sun.security.tools.keytool.Main, \
-+    JAVA_ARGS := -XX:+DisableHotswapAgent, \
- ))
- 
- ################################################################################
 diff --git a/make/launcher/Launcher-java.rmi.gmk b/make/launcher/Launcher-java.rmi.gmk
 index a69a90bcc81..07046232275 100644
 --- a/make/launcher/Launcher-java.rmi.gmk
@@ -259,16 +229,16 @@ index 7117fa78059..761a52d8466 100644
  
  # Hook to include the corresponding custom file, if present.
 diff --git a/make/launcher/Launcher-jdk.jconsole.gmk b/make/launcher/Launcher-jdk.jconsole.gmk
-index 575b9e0595b..9b38683a489 100644
+index 6205ae63d16..5ca6a0c123b 100644
 --- a/make/launcher/Launcher-jdk.jconsole.gmk
 +++ b/make/launcher/Launcher-jdk.jconsole.gmk
-@@ -29,7 +29,8 @@ $(eval $(call SetupBuildLauncher, jconsole, \
+@@ -28,7 +28,8 @@ include LauncherCommon.gmk
+ $(eval $(call SetupBuildLauncher, jconsole, \
      MAIN_CLASS := sun.tools.jconsole.JConsole, \
      JAVA_ARGS := --add-opens java.base/java.io=jdk.jconsole \
- 		 -Djconsole.showOutputViewer \
--		 -Djdk.attach.allowAttachSelf=true, \
-+		 -Djdk.attach.allowAttachSelf=true \
-+		 -XX:+DisableHotswapAgent, \
+-		 -Djconsole.showOutputViewer, \
++      -Djconsole.showOutputViewer \
++      -XX:+DisableHotswapAgent, \
      CFLAGS_windows := -DJAVAW, \
      LIBS_windows := user32.lib, \
  ))
@@ -391,36 +361,11 @@ index 82311e69fd6..bd39f8595b2 100644
 +        -XX:+DisableHotswapAgent, \
      CFLAGS := -DENABLE_ARG_FILES, \
  ))
-diff --git a/src/hotspot/share/classfile/vmSymbols.hpp b/src/hotspot/share/classfile/vmSymbols.hpp
-index 41e9a84cd69..1f67eb202b5 100644
---- a/src/hotspot/share/classfile/vmSymbols.hpp
-+++ b/src/hotspot/share/classfile/vmSymbols.hpp
-@@ -342,6 +342,7 @@
-   /* common method and field names */                                                             \
-   template(object_initializer_name,                   "<init>")                                   \
-   template(class_initializer_name,                    "<clinit>")                                 \
-+  template(ha_class_initializer_name,                 "$$ha$clinit")                              \
-   template(println_name,                              "println")                                  \
-   template(printStackTrace_name,                      "printStackTrace")                          \
-   template(main_name,                                 "main")                                     \
-diff --git a/src/hotspot/share/interpreter/linkResolver.cpp b/src/hotspot/share/interpreter/linkResolver.cpp
-index 0c24146ff00..9dc184d02f5 100644
---- a/src/hotspot/share/interpreter/linkResolver.cpp
-+++ b/src/hotspot/share/interpreter/linkResolver.cpp
-@@ -1009,7 +1009,7 @@ void LinkResolver::resolve_field(fieldDescriptor& fd,
-         assert(!m.is_null(), "information about the current method must be available for 'put' bytecodes");
-         bool is_initialized_static_final_update = (byte == Bytecodes::_putstatic &&
-                                                    fd.is_static() &&
--                                                   !m()->is_static_initializer());
-+                                                   !(m()->is_static_initializer() || m()->name() == vmSymbols::ha_class_initializer_name()));
-         bool is_initialized_instance_final_update = ((byte == Bytecodes::_putfield || byte == Bytecodes::_nofast_putfield) &&
-                                                      !fd.is_static() &&
-                                                      !m->is_object_initializer());
 diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
-index 013ba213c00..2b5ba619f43 100644
+index 2ca6dde069d..c75bb5d8f49 100644
 --- a/src/hotspot/share/runtime/arguments.cpp
 +++ b/src/hotspot/share/runtime/arguments.cpp
-@@ -3962,6 +3962,8 @@ jint Arguments::parse(const JavaVMInitArgs* initial_cmd_args) {
+@@ -3937,6 +3937,8 @@ jint Arguments::parse(const JavaVMInitArgs* initial_cmd_args) {
    // Set object alignment values.
    set_object_alignment();
  
@@ -429,7 +374,7 @@ index 013ba213c00..2b5ba619f43 100644
  #if !INCLUDE_CDS
    if (DumpSharedSpaces || RequireSharedSpaces) {
      jio_fprintf(defaultStream::error_stream(),
-@@ -4295,3 +4297,68 @@ bool Arguments::copy_expand_pid(const char* src, size_t srclen,
+@@ -4270,3 +4272,60 @@ bool Arguments::copy_expand_pid(const char* src, size_t srclen,
    *b = '\0';
    return (p == src_end); // return false if not all of the source was copied
  }
@@ -486,23 +431,15 @@ index 013ba213c00..2b5ba619f43 100644
 +  create_numbered_property("jdk.module.addopens", "java.base/java.lang=ALL-UNNAMED", addopens_count++);
 +  // Class of  field java.lang.reflect.Proxy/proxyCache
 +  create_numbered_property("jdk.module.addopens", "java.base/jdk.internal.loader=ALL-UNNAMED", addopens_count++);
-+  // Use to access java.io.Reader, java.io.InputStream, java.io.FileInputStream
-+  create_numbered_property("jdk.module.addopens", "java.base/java.io=ALL-UNNAMED", addopens_count++);
 +  // java.beans.Introspector access
 +  create_numbered_property("jdk.module.addopens", "java.desktop/java.beans=ALL-UNNAMED", addopens_count++);
-+  // java.beans.Introspector access
-+  create_numbered_property("jdk.module.addopens", "java.desktop/com.sun.beans=ALL-UNNAMED", addopens_count++);
-+  // com.sun.beans.introspect.ClassInfo access
-+  create_numbered_property("jdk.module.addopens", "java.desktop/com.sun.beans.introspect=ALL-UNNAMED", addopens_count++);
-+  // com.sun.beans.introspect.util.Cache access
-+  create_numbered_property("jdk.module.addopens", "java.desktop/com.sun.beans.util=ALL-UNNAMED", addopens_count++);
 +
 +}
 diff --git a/src/hotspot/share/runtime/arguments.hpp b/src/hotspot/share/runtime/arguments.hpp
-index cc7f71a4404..b2bab2e1f44 100644
+index 46450cce5c9..3dc5b3d4bae 100644
 --- a/src/hotspot/share/runtime/arguments.hpp
 +++ b/src/hotspot/share/runtime/arguments.hpp
-@@ -507,6 +507,9 @@ class Arguments : AllStatic {
+@@ -506,6 +506,9 @@ class Arguments : AllStatic {
  
    static size_t conservative_max_heap_alignment() { return _conservative_max_heap_alignment; }
  
@@ -513,7 +450,7 @@ index cc7f71a4404..b2bab2e1f44 100644
    static size_t max_heap_for_compressed_oops();
  
 diff --git a/src/hotspot/share/runtime/globals.hpp b/src/hotspot/share/runtime/globals.hpp
-index a6c33744760..b8dba232fc1 100644
+index f3cf08fffb6..5f6c7b8e388 100644
 --- a/src/hotspot/share/runtime/globals.hpp
 +++ b/src/hotspot/share/runtime/globals.hpp
 @@ -32,6 +32,12 @@
@@ -529,7 +466,7 @@ index a6c33744760..b8dba232fc1 100644
  // The larger HeapWordSize for 64bit requires larger heaps
  // for the same application running in 64bit.  See bug 4967770.
  // The minimum alignment to a heap word size is done.  Other
-@@ -2678,8 +2684,10 @@ define_pd_global(uint64_t,MaxRAM,                    1ULL*G);
+@@ -2675,8 +2681,10 @@ define_pd_global(uint64_t,MaxRAM,                    1ULL*G);
                                                                              \
    product(bool, AllowEnhancedClassRedefinition, true,                       \
               "Allow enhanced class redefinition beyond swapping method "    \
@@ -542,116 +479,6 @@ index a6c33744760..b8dba232fc1 100644
  #define VM_FLAGS(develop,                                                   \
                   develop_pd,                                                \
                   product,                                                   \
-diff --git a/src/java.desktop/share/classes/com/sun/beans/introspect/package-info.java b/src/java.desktop/share/classes/com/sun/beans/introspect/package-info.java
-new file mode 100644
-index 00000000000..6636e4dd62a
---- /dev/null
-+++ b/src/java.desktop/share/classes/com/sun/beans/introspect/package-info.java
-@@ -0,0 +1,26 @@
-+/*
-+ * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
-+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-+ *
-+ * This code is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License version 2 only, as
-+ * published by the Free Software Foundation.  Oracle designates this
-+ * particular file as subject to the "Classpath" exception as provided
-+ * by Oracle in the LICENSE file that accompanied this code.
-+ *
-+ * This code is distributed in the hope that it will be useful, but WITHOUT
-+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-+ * version 2 for more details (a copy is included in the LICENSE file that
-+ * accompanied this code).
-+ *
-+ * You should have received a copy of the GNU General Public License version
-+ * 2 along with this work; if not, write to the Free Software Foundation,
-+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-+ *
-+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-+ * or visit www.oracle.com if you need additional information or have any
-+ * questions.
-+ */
-+
-+package com.sun.beans.introspect;
-diff --git a/src/java.desktop/share/classes/com/sun/beans/package-info.java b/src/java.desktop/share/classes/com/sun/beans/package-info.java
-new file mode 100644
-index 00000000000..5c097eeaa53
---- /dev/null
-+++ b/src/java.desktop/share/classes/com/sun/beans/package-info.java
-@@ -0,0 +1,26 @@
-+/*
-+ * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
-+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-+ *
-+ * This code is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License version 2 only, as
-+ * published by the Free Software Foundation.  Oracle designates this
-+ * particular file as subject to the "Classpath" exception as provided
-+ * by Oracle in the LICENSE file that accompanied this code.
-+ *
-+ * This code is distributed in the hope that it will be useful, but WITHOUT
-+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-+ * version 2 for more details (a copy is included in the LICENSE file that
-+ * accompanied this code).
-+ *
-+ * You should have received a copy of the GNU General Public License version
-+ * 2 along with this work; if not, write to the Free Software Foundation,
-+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-+ *
-+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-+ * or visit www.oracle.com if you need additional information or have any
-+ * questions.
-+ */
-+
-+package com.sun.beans;
-diff --git a/src/java.desktop/share/classes/com/sun/beans/util/package-info.java b/src/java.desktop/share/classes/com/sun/beans/util/package-info.java
-new file mode 100644
-index 00000000000..2d5d735ffa8
---- /dev/null
-+++ b/src/java.desktop/share/classes/com/sun/beans/util/package-info.java
-@@ -0,0 +1,26 @@
-+/*
-+ * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
-+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-+ *
-+ * This code is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License version 2 only, as
-+ * published by the Free Software Foundation.  Oracle designates this
-+ * particular file as subject to the "Classpath" exception as provided
-+ * by Oracle in the LICENSE file that accompanied this code.
-+ *
-+ * This code is distributed in the hope that it will be useful, but WITHOUT
-+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-+ * version 2 for more details (a copy is included in the LICENSE file that
-+ * accompanied this code).
-+ *
-+ * You should have received a copy of the GNU General Public License version
-+ * 2 along with this work; if not, write to the Free Software Foundation,
-+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-+ *
-+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-+ * or visit www.oracle.com if you need additional information or have any
-+ * questions.
-+ */
-+
-+package com.sun.beans.util;
-diff --git a/src/java.desktop/share/classes/module-info.java b/src/java.desktop/share/classes/module-info.java
-index b663b382f52..2a8f0a67d52 100644
---- a/src/java.desktop/share/classes/module-info.java
-+++ b/src/java.desktop/share/classes/module-info.java
-@@ -104,6 +104,9 @@ module java.desktop {
-     exports javax.swing.text.rtf;
-     exports javax.swing.tree;
-     exports javax.swing.undo;
-+    exports com.sun.beans;
-+    exports com.sun.beans.introspect;
-+    exports com.sun.beans.util;
- 
-     // qualified exports may be inserted at build time
-     // see make/GensrcModuleInfo.gmk
 -- 
-2.23.0
+2.24.3 (Apple Git-128)
 

jb/project/tools/patches/dcevm/0015-Initialize-method-s-_new_version-_old_version-to-NUL.patch

@@ -1,26 +0,0 @@
-From 0156b2084be20579b407e112a00ba15f54248003 Mon Sep 17 00:00:00 2001
-From: Vladimir Dvorak <lada.dvorak7@gmail.com>
-Date: Thu, 22 Oct 2020 20:15:20 +0200
-Subject: [PATCH 15/18] Initialize method's _new_version/_old_version to NULL
-
----
- src/hotspot/share/oops/method.cpp | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-diff --git a/src/hotspot/share/oops/method.cpp b/src/hotspot/share/oops/method.cpp
-index 031f255e632..a9556ecf0c4 100644
---- a/src/hotspot/share/oops/method.cpp
-+++ b/src/hotspot/share/oops/method.cpp
-@@ -83,7 +83,8 @@ Method* Method::allocate(ClassLoaderData* loader_data,
-   return new (loader_data, size, MetaspaceObj::MethodType, THREAD) Method(cm, access_flags);
- }
- 
--Method::Method(ConstMethod* xconst, AccessFlags access_flags) {
-+Method::Method(ConstMethod* xconst, AccessFlags access_flags) :  _new_version(NULL),
-+                                                                 _old_version(NULL) {
-   NoSafepointVerifier no_safepoint;
-   set_constMethod(xconst);
-   set_access_flags(access_flags);
--- 
-2.23.0
-

jb/project/tools/patches/dcevm/0016-Add-dcevm-distro-name.patch

@@ -1,17 +1,17 @@
-From 80c1cd01b45735928e3b3e9283b5484ea6a70a7f Mon Sep 17 00:00:00 2001
-From: Vladimir Dvorak <lada.dvorak7@gmail.com>
-Date: Mon, 19 Oct 2020 20:00:04 +0200
-Subject: [PATCH 13/18] Set HOTSPOT_VM_DISTRO=Dynamic Code Evolution
+From dc397b652d9810f6f261070afbb8519f1c2964ee Mon Sep 17 00:00:00 2001
+From: skybber <lada.dvorak7@gmail.com>
+Date: Sun, 16 Dec 2018 09:55:31 +0100
+Subject: [PATCH 16/50] Add dcevm distro name
 
 ---
  make/autoconf/version-numbers | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/make/autoconf/version-numbers b/make/autoconf/version-numbers
-index 1d08f6a80dc..88b4d460ee8 100644
+index b5a23138213..5c0a3242c80 100644
 --- a/make/autoconf/version-numbers
 +++ b/make/autoconf/version-numbers
-@@ -44,7 +44,7 @@ PRODUCT_NAME=OpenJDK
+@@ -43,7 +43,7 @@ PRODUCT_NAME=OpenJDK
  PRODUCT_SUFFIX="Runtime Environment"
  JDK_RC_PLATFORM_NAME=Platform
  COMPANY_NAME=N/A
@@ -21,5 +21,5 @@ index 1d08f6a80dc..88b4d460ee8 100644
  VENDOR_URL_BUG=https://bugreport.java.com/bugreport/
  VENDOR_URL_VM_BUG=https://bugreport.java.com/bugreport/crash.jsp
 -- 
-2.23.0
+2.24.3 (Apple Git-128)
 

jb/project/tools/patches/dcevm/0016-Clear-dcevm-code-separation.patch

@@ -1,191 +0,0 @@
-From 81ba8f1d120e158a7b0cfa09b5dd51295d51901f Mon Sep 17 00:00:00 2001
-From: Vladimir Dvorak <lada.dvorak7@gmail.com>
-Date: Fri, 23 Oct 2020 10:20:26 +0200
-Subject: [PATCH 16/18] Clear dcevm code separation
-
----
- src/hotspot/share/classfile/systemDictionary.cpp   |  4 ++--
- src/hotspot/share/gc/serial/genMarkSweep.cpp       |  8 +++++---
- src/hotspot/share/interpreter/linkResolver.cpp     | 14 ++++++++++----
- .../instrumentation/jfrEventClassTransformer.cpp   |  2 +-
- src/hotspot/share/oops/instanceKlass.cpp           | 10 ++++++----
- src/hotspot/share/oops/method.cpp                  |  2 +-
- src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp  |  2 +-
- src/hotspot/share/runtime/reflection.cpp           |  2 +-
- 8 files changed, 27 insertions(+), 17 deletions(-)
-
-diff --git a/src/hotspot/share/classfile/systemDictionary.cpp b/src/hotspot/share/classfile/systemDictionary.cpp
-index a6a03d3c0e9..9e0f4dd3c96 100644
---- a/src/hotspot/share/classfile/systemDictionary.cpp
-+++ b/src/hotspot/share/classfile/systemDictionary.cpp
-@@ -1152,7 +1152,7 @@ InstanceKlass* SystemDictionary::resolve_from_stream(Symbol* class_name,
-     MutexLocker mu(SystemDictionary_lock, THREAD);
- 
-     Klass* check = find_class(h_name, k->class_loader_data());
--    assert((check == k && !k->is_redefining()) || (k->is_redefining() && check == k->old_version()), "should be present in the dictionary");
-+    assert(check == k && !k->is_redefining() || k->is_redefining() && check == k->old_version(), "should be present in the dictionary");
-   } );
- 
-   return k;
-@@ -2153,7 +2153,7 @@ void SystemDictionary::check_constraints(unsigned int d_hash,
-       // also hold array classes.
- 
-       assert(check->is_instance_klass(), "noninstance in systemdictionary");
--      if ((defining == true) || ((k != check) && k->old_version() != check)) {
-+      if ((defining == true) || (k != check && (!AllowEnhancedClassRedefinition || k->old_version() != check))) {
-         throwException = true;
-         ss.print("loader %s", loader_data->loader_name_and_id());
-         ss.print(" attempted duplicate %s definition for %s. (%s)",
-diff --git a/src/hotspot/share/gc/serial/genMarkSweep.cpp b/src/hotspot/share/gc/serial/genMarkSweep.cpp
-index b18682f9a12..590b5389b4d 100644
---- a/src/hotspot/share/gc/serial/genMarkSweep.cpp
-+++ b/src/hotspot/share/gc/serial/genMarkSweep.cpp
-@@ -343,7 +343,9 @@ void GenMarkSweep::mark_sweep_phase4() {
- 
-   GenCompactClosure blk;
-   gch->generation_iterate(&blk, true);
--  DcevmSharedGC::copy_rescued_objects_back(MarkSweep::_rescued_oops, true);
--  DcevmSharedGC::clear_rescued_objects_resource(MarkSweep::_rescued_oops);
--  MarkSweep::_rescued_oops = NULL;
-+  if (AllowEnhancedClassRedefinition) {
-+    DcevmSharedGC::copy_rescued_objects_back(MarkSweep::_rescued_oops, true);
-+    DcevmSharedGC::clear_rescued_objects_resource(MarkSweep::_rescued_oops);
-+    MarkSweep::_rescued_oops = NULL;
-+  }
- }
-diff --git a/src/hotspot/share/interpreter/linkResolver.cpp b/src/hotspot/share/interpreter/linkResolver.cpp
-index 9dc184d02f5..bff1c3627b0 100644
---- a/src/hotspot/share/interpreter/linkResolver.cpp
-+++ b/src/hotspot/share/interpreter/linkResolver.cpp
-@@ -295,8 +295,13 @@ void LinkResolver::check_klass_accessability(Klass* ref_klass, Klass* sel_klass,
-       return;  // no relevant check to do
-     }
-   }
--  Reflection::VerifyClassAccessResults vca_result =
--    Reflection::verify_class_access(ref_klass->newest_version(), InstanceKlass::cast(base_klass->newest_version()), true);
-+  Klass* refKlassNewest = ref_klass;
-+  Klass* baseKlassNewest = base_klass;
-+  if (AllowEnhancedClassRedefinition) {
-+    refKlassNewest = ref_klass->newest_version();
-+    baseKlassNewest = base_klass->newest_version();
-+  }
-+  Reflection::VerifyClassAccessResults vca_result = Reflection::verify_class_access(refKlassNewest, InstanceKlass::cast(baseKlassNewest), true);
-   if (vca_result != Reflection::ACCESS_OK) {
-     ResourceMark rm(THREAD);
-     char* msg = Reflection::verify_class_access_msg(ref_klass,
-@@ -572,7 +577,8 @@ void LinkResolver::check_method_accessability(Klass* ref_klass,
-   // We'll check for the method name first, as that's most likely
-   // to be false (so we'll short-circuit out of these tests).
-   if (sel_method->name() == vmSymbols::clone_name() &&
--      sel_klass->newest_version() == SystemDictionary::Object_klass()->newest_version() &&
-+      ( !AllowEnhancedClassRedefinition && sel_klass == SystemDictionary::Object_klass() ||
-+      AllowEnhancedClassRedefinition && sel_klass->newest_version() == SystemDictionary::Object_klass()->newest_version()) &&
-       resolved_klass->is_array_klass()) {
-     // We need to change "protected" to "public".
-     assert(flags.is_protected(), "clone not protected?");
-@@ -997,7 +1003,7 @@ void LinkResolver::resolve_field(fieldDescriptor& fd,
-       ResourceMark rm(THREAD);
-       stringStream ss;
- 
--      if (sel_klass != current_klass && sel_klass != current_klass->active_version()) {
-+      if (sel_klass != current_klass && (!AllowEnhancedClassRedefinition || sel_klass != current_klass->active_version())) {
-         ss.print("Update to %s final field %s.%s attempted from a different class (%s) than the field's declaring class",
-                  is_static ? "static" : "non-static", resolved_klass->external_name(), fd.name()->as_C_string(),
-                 current_klass->external_name());
-diff --git a/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp b/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp
-index 84891b48c2a..6f19e2939a2 100644
---- a/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp
-+++ b/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp
-@@ -1467,7 +1467,7 @@ static InstanceKlass* create_new_instance_klass(InstanceKlass* ik, ClassFileStre
-                              NULL, // host klass
-                              NULL, // cp_patches
-                              ClassFileParser::INTERNAL, // internal visibility
--							 false,
-+                             false,
-                              THREAD);
-   if (HAS_PENDING_EXCEPTION) {
-     log_pending_exception(PENDING_EXCEPTION);
-diff --git a/src/hotspot/share/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
-index 7eb1b01c785..710e0ddc930 100644
---- a/src/hotspot/share/oops/instanceKlass.cpp
-+++ b/src/hotspot/share/oops/instanceKlass.cpp
-@@ -178,7 +178,9 @@ bool InstanceKlass::has_nest_member(InstanceKlass* k, TRAPS) const {
-       }
- 
-       Klass* k2 = _constants->klass_at(cp_index, CHECK_false);
--      k2 = k2->newest_version();
-+      if (AllowEnhancedClassRedefinition) {
-+        k2 = k2->newest_version();
-+      }
-       if (k2 == k) {
-         log_trace(class, nestmates)("- class is listed as a nest member");
-         return true;
-@@ -837,7 +839,7 @@ bool InstanceKlass::link_class_impl(bool throw_verifyerror, TRAPS) {
- #endif
-       set_init_state(linked);
-       // (DCEVM) Must check for old version in order to prevent infinite loops.
--      if (JvmtiExport::should_post_class_prepare() && old_version() == NULL /* JVMTI deadlock otherwise */) {
-+      if (JvmtiExport::should_post_class_prepare() && (!AllowEnhancedClassRedefinition || old_version() == NULL) /* JVMTI deadlock otherwise */) {
-         Thread *thread = THREAD;
-         assert(thread->is_Java_thread(), "thread->is_Java_thread()");
-         JvmtiExport::post_class_prepare((JavaThread *) thread, this);
-@@ -919,7 +921,7 @@ void InstanceKlass::initialize_impl(TRAPS) {
-     // that aren't expected to throw.  This would wreak havoc.  See 6320309.
-     // (DCEVM) Wait also for the old class version to be fully initialized.
-     while((is_being_initialized() && !is_reentrant_initialization(self))
--        || (old_version() != NULL && InstanceKlass::cast(old_version())->is_being_initialized())) {
-+        || (AllowEnhancedClassRedefinition && old_version() != NULL && InstanceKlass::cast(old_version())->is_being_initialized())) {
-         wait = true;
-       ol.waitUninterruptibly(CHECK);
-     }
-@@ -3617,7 +3619,7 @@ void InstanceKlass::verify_on(outputStream* st) {
- 
-     guarantee(sib->is_klass(), "should be klass");
-     // TODO: (DCEVM) explain
--    guarantee(sib->super() == super || super->newest_version() == SystemDictionary::Object_klass(), "siblings should have same superklass");
-+    guarantee(sib->super() == super || AllowEnhancedClassRedefinition && super->newest_version() == SystemDictionary::Object_klass(), "siblings should have same superklass");
-   }
- 
-   // Verify implementor fields requires the Compile_lock, but this is sometimes
-diff --git a/src/hotspot/share/oops/method.cpp b/src/hotspot/share/oops/method.cpp
-index a9556ecf0c4..6c7edaca67e 100644
---- a/src/hotspot/share/oops/method.cpp
-+++ b/src/hotspot/share/oops/method.cpp
-@@ -2100,7 +2100,7 @@ void Method::ensure_jmethod_ids(ClassLoaderData* loader_data, int capacity) {
- // Add a method id to the jmethod_ids
- jmethodID Method::make_jmethod_id(ClassLoaderData* loader_data, Method* m) {
-   // FIXME: (DCEVM) ???
--  if (m != m->newest_version()) {
-+  if (AllowEnhancedClassRedefinition && m != m->newest_version()) {
-     m = m->newest_version();
-   }
-   ClassLoaderData* cld = loader_data;
-diff --git a/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp b/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp
-index 60604c645ff..325bffb7ad0 100644
---- a/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp
-+++ b/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp
-@@ -51,7 +51,7 @@ public:
-     //         the new version (SystemDictionary stores only new versions). But the LoadedClassesClosure's functionality was
-     //         changed in java8  where jvmtiLoadedClasses collects all classes from all classloaders, therefore we
-     //         must use new versions only.
--    if (k->new_version()==NULL) {
-+    if (AllowEnhancedClassRedefinition && k->new_version()==NULL) {
-       _classStack.push((jclass) _env->jni_reference(Handle(_cur_thread, k->java_mirror())));
-     }
-   }
-diff --git a/src/hotspot/share/runtime/reflection.cpp b/src/hotspot/share/runtime/reflection.cpp
-index ed789b0bc2b..06f60855655 100644
---- a/src/hotspot/share/runtime/reflection.cpp
-+++ b/src/hotspot/share/runtime/reflection.cpp
-@@ -660,7 +660,7 @@ bool Reflection::verify_member_access(const Klass* current_class,
-                                       TRAPS) {
- 
-   // (DCEVM) Decide accessibility based on active version
--  if (current_class != NULL) {
-+  if (AllowEnhancedClassRedefinition && current_class != NULL) {
-     current_class = current_class->active_version();
-   }
- 
--- 
-2.23.0
-

jb/project/tools/patches/dcevm/0017-Fix-metadataOnStack-bug.patch

@@ -1,160 +0,0 @@
-From a022248d12e37084c8f8987a44d567ba0e02fb6d Mon Sep 17 00:00:00 2001
-From: Vladimir Dvorak <lada.dvorak7@gmail.com>
-Date: Fri, 23 Oct 2020 11:07:40 +0200
-Subject: [PATCH 17/18] Fix metadataOnStack bug
-
----
- .../share/classfile/classLoaderData.cpp       |  7 +-
- .../share/classfile/metadataOnStackMark.cpp   | 67 ++++++++++---------
- .../share/classfile/metadataOnStackMark.hpp   |  3 +-
- .../share/prims/jvmtiRedefineClasses.cpp      |  2 +-
- 4 files changed, 41 insertions(+), 38 deletions(-)
-
-diff --git a/src/hotspot/share/classfile/classLoaderData.cpp b/src/hotspot/share/classfile/classLoaderData.cpp
-index 1bc67adf5a7..bba5ce0511f 100644
---- a/src/hotspot/share/classfile/classLoaderData.cpp
-+++ b/src/hotspot/share/classfile/classLoaderData.cpp
-@@ -1398,13 +1398,10 @@ bool ClassLoaderDataGraph::do_unloading(bool clean_previous_versions) {
-   // Klassesoto delete.
- 
-   // FIXME: dcevm - block asserts in MetadataOnStackMark
--  bool walk_all_metadata = false;
--  if (!AllowEnhancedClassRedefinition) {
--    walk_all_metadata = clean_previous_versions &&
-+  bool walk_all_metadata = clean_previous_versions &&
-                              JvmtiExport::has_redefined_a_class() &&
-                              InstanceKlass::has_previous_versions_and_reset();
--    MetadataOnStackMark md_on_stack(walk_all_metadata);
--  }
-+  MetadataOnStackMark md_on_stack(walk_all_metadata, AllowEnhancedClassRedefinition);
- 
-   // Save previous _unloading pointer for CMS which may add to unloading list before
-   // purging and we don't want to rewalk the previously unloaded class loader data.
-diff --git a/src/hotspot/share/classfile/metadataOnStackMark.cpp b/src/hotspot/share/classfile/metadataOnStackMark.cpp
-index 3a62c789702..9d7bdbde74b 100644
---- a/src/hotspot/share/classfile/metadataOnStackMark.cpp
-+++ b/src/hotspot/share/classfile/metadataOnStackMark.cpp
-@@ -46,23 +46,25 @@ NOT_PRODUCT(bool MetadataOnStackMark::_is_active = false;)
- // it.  Class unloading only deletes in-error class files, methods created by
- // the relocator and dummy constant pools.  None of these appear anywhere except
- // in metadata Handles.
--MetadataOnStackMark::MetadataOnStackMark(bool redefinition_walk) {
-+MetadataOnStackMark::MetadataOnStackMark(bool redefinition_walk, bool ignore) : _ignore(ignore) {
-   assert(SafepointSynchronize::is_at_safepoint(), "sanity check");
-   assert(_used_buffers == NULL, "sanity check");
-   assert(!_is_active, "MetadataOnStackMarks do not nest");
-   NOT_PRODUCT(_is_active = true;)
- 
--  Threads::metadata_handles_do(Metadata::mark_on_stack);
-+  if (!ignore) {
-+    Threads::metadata_handles_do(Metadata::mark_on_stack);
- 
--  if (redefinition_walk) {
--    Threads::metadata_do(Metadata::mark_on_stack);
--    CodeCache::metadata_do(Metadata::mark_on_stack);
--    CompileBroker::mark_on_stack();
--    JvmtiCurrentBreakpoints::metadata_do(Metadata::mark_on_stack);
--    ThreadService::metadata_do(Metadata::mark_on_stack);
-+    if (redefinition_walk) {
-+      Threads::metadata_do(Metadata::mark_on_stack);
-+      CodeCache::metadata_do(Metadata::mark_on_stack);
-+      CompileBroker::mark_on_stack();
-+      JvmtiCurrentBreakpoints::metadata_do(Metadata::mark_on_stack);
-+      ThreadService::metadata_do(Metadata::mark_on_stack);
- #if INCLUDE_JVMCI
--    JVMCIRuntime::metadata_do(Metadata::mark_on_stack);
-+      JVMCIRuntime::metadata_do(Metadata::mark_on_stack);
- #endif
-+    }
-   }
- }
- 
-@@ -71,32 +73,35 @@ MetadataOnStackMark::~MetadataOnStackMark() {
-   // Unmark everything that was marked.   Can't do the same walk because
-   // redefine classes messes up the code cache so the set of methods
-   // might not be the same.
--  retire_current_buffer();
--
--  MetadataOnStackBuffer* buffer = _used_buffers;
--  while (buffer != NULL) {
--    // Clear on stack state for all metadata.
--    size_t size = buffer->size();
--    for (size_t i  = 0; i < size; i++) {
--      Metadata* md = buffer->at(i);
--      md->set_on_stack(false);
-+  if (!_ignore)
-+  {
-+    retire_current_buffer();
-+
-+    MetadataOnStackBuffer* buffer = _used_buffers;
-+    while (buffer != NULL) {
-+      // Clear on stack state for all metadata.
-+      size_t size = buffer->size();
-+      for (size_t i  = 0; i < size; i++) {
-+        Metadata* md = buffer->at(i);
-+        md->set_on_stack(false);
-+      }
-+
-+      MetadataOnStackBuffer* next = buffer->next_used();
-+
-+      // Move the buffer to the free list.
-+      buffer->clear();
-+      buffer->set_next_used(NULL);
-+      buffer->set_next_free(_free_buffers);
-+      _free_buffers = buffer;
-+
-+      // Step to next used buffer.
-+      buffer = next;
-     }
- 
--    MetadataOnStackBuffer* next = buffer->next_used();
--
--    // Move the buffer to the free list.
--    buffer->clear();
--    buffer->set_next_used(NULL);
--    buffer->set_next_free(_free_buffers);
--    _free_buffers = buffer;
-+    _used_buffers = NULL;
- 
--    // Step to next used buffer.
--    buffer = next;
-+    NOT_PRODUCT(_is_active = false;)
-   }
--
--  _used_buffers = NULL;
--
--  NOT_PRODUCT(_is_active = false;)
- }
- 
- void MetadataOnStackMark::retire_buffer(MetadataOnStackBuffer* buffer) {
-diff --git a/src/hotspot/share/classfile/metadataOnStackMark.hpp b/src/hotspot/share/classfile/metadataOnStackMark.hpp
-index 8da4ac6f92b..6d327ab98f2 100644
---- a/src/hotspot/share/classfile/metadataOnStackMark.hpp
-+++ b/src/hotspot/share/classfile/metadataOnStackMark.hpp
-@@ -47,8 +47,9 @@ class MetadataOnStackMark : public StackObj {
-   static MetadataOnStackBuffer* allocate_buffer();
-   static void retire_buffer(MetadataOnStackBuffer* buffer);
- 
-+  bool _ignore;
-  public:
--  MetadataOnStackMark(bool redefinition_walk);
-+  MetadataOnStackMark(bool redefinition_walk, bool ignore);
-    ~MetadataOnStackMark();
- 
-   static void record(Metadata* m);
-diff --git a/src/hotspot/share/prims/jvmtiRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiRedefineClasses.cpp
-index fb81189d9c2..18bc7f4eea4 100644
---- a/src/hotspot/share/prims/jvmtiRedefineClasses.cpp
-+++ b/src/hotspot/share/prims/jvmtiRedefineClasses.cpp
-@@ -199,7 +199,7 @@ void VM_RedefineClasses::doit() {
- 
-   // Mark methods seen on stack and everywhere else so old methods are not
-   // cleaned up if they're on the stack.
--  MetadataOnStackMark md_on_stack(true);
-+  MetadataOnStackMark md_on_stack(true, false);
-   HandleMark hm(thread);   // make sure any handles created are deleted
-                            // before the stack walk again.
- 
--- 
-2.23.0
-

jb/project/tools/patches/dcevm/0017-java.desktop-com.sun.beans-ALL-UNNAMED.patch

@@ -0,0 +1,24 @@
+From 987645d54a6682f28a733731965d6b377e892974 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Tue, 19 Nov 2019 19:58:27 +0100
+Subject: [PATCH 17/50] java.desktop/com.sun.beans=ALL-UNNAMED
+
+---
+ src/hotspot/share/runtime/arguments.cpp | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
+index c75bb5d8f49..ba6e78d6daa 100644
+--- a/src/hotspot/share/runtime/arguments.cpp
++++ b/src/hotspot/share/runtime/arguments.cpp
+@@ -4327,5 +4327,7 @@ void Arguments::setup_hotswap_agent() {
+   create_numbered_property("jdk.module.addopens", "java.base/jdk.internal.loader=ALL-UNNAMED", addopens_count++);
+   // java.beans.Introspector access
+   create_numbered_property("jdk.module.addopens", "java.desktop/java.beans=ALL-UNNAMED", addopens_count++);
++  // java.beans.Introspector access
++  create_numbered_property("jdk.module.addopens", "java.desktop/com.sun.beans=ALL-UNNAMED", addopens_count++);
+ 
+ }
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0018-Fix-LoadedClassesClosure-fixes-problems-with-remote-.patch

@@ -1,26 +0,0 @@
-From 46795cd6c086e2008b270f89971bb07ad34ac355 Mon Sep 17 00:00:00 2001
-From: Vladimir Dvorak <lada.dvorak7@gmail.com>
-Date: Wed, 11 Nov 2020 18:45:15 +0100
-Subject: [PATCH 18/18] Fix LoadedClassesClosure - fixes problems with remote
- debugging
-
----
- src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp b/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp
-index 325bffb7ad0..30752e37f1c 100644
---- a/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp
-+++ b/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp
-@@ -51,7 +51,7 @@ public:
-     //         the new version (SystemDictionary stores only new versions). But the LoadedClassesClosure's functionality was
-     //         changed in java8  where jvmtiLoadedClasses collects all classes from all classloaders, therefore we
-     //         must use new versions only.
--    if (AllowEnhancedClassRedefinition && k->new_version()==NULL) {
-+    if (!AllowEnhancedClassRedefinition || k->new_version()==NULL) {
-       _classStack.push((jclass) _env->jni_reference(Handle(_cur_thread, k->java_mirror())));
-     }
-   }
--- 
-2.23.0
-

jb/project/tools/patches/dcevm/0018-increment_class_counter-using-orig-dcevm-code.patch

@@ -0,0 +1,113 @@
+From 60569257636a2d0b31b04ab2638d81f840d75e58 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Tue, 19 Nov 2019 21:07:59 +0100
+Subject: [PATCH 18/50] increment_class_counter() using orig dcevm code
+
+Probably it is cause of SISEGV on:
+_
+VM_EnhancedRedefineClasses::redefine_single_class->java_mirror()
+---
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 39 ++++++-------------
+ 1 file changed, 12 insertions(+), 27 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 4ca638548dc..efb9e806508 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -1146,9 +1146,9 @@ int VM_EnhancedRedefineClasses::calculate_redefinition_flags(InstanceKlass* new_
+ }
+ 
+ 
+-/** 
++/**
+   Searches for the class bytecode of the given class and returns it as a byte array.
+-  
++
+   @param the_class definition of a class, either existing class or new_class
+   @param class_bytes - if the class is redefined, it contains new class definition, otherwise just original class bytecode.
+   @param class_byte_count - size of class_bytes
+@@ -1460,7 +1460,7 @@ void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
+ //
+ //      ik->itable()->adjust_method_entries(the_class, &trace_name_printed);
+ //    }
+-   
++
+    constantPoolHandle other_cp = constantPoolHandle(ik->constants());
+ 
+   // Update host klass of anonymous classes (for example, produced by lambdas) to newest version.
+@@ -1764,7 +1764,7 @@ void VM_EnhancedRedefineClasses::flush_dependent_code(InstanceKlass* k_h, TRAPS)
+ /**
+   Compare _old_methods and _new_methods arrays and store the result into
+ 	_matching_old_methods, _matching_new_methods, _added_methods, _deleted_methods
+-  
++
+   Setup _old_methods and _new_methods before the call - it should be called for one class only!
+ */
+ void VM_EnhancedRedefineClasses::compute_added_deleted_matching_methods() {
+@@ -1898,13 +1898,13 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+     ResourceMark rm(THREAD);
+     // increment the classRedefinedCount field in the_class and in any
+     // direct and indirect subclasses of the_class
+-    increment_class_counter(the_class, THREAD);
++    increment_class_counter(new_class, THREAD);
+     log_info(redefine, class, load)
+       ("redefined name=%s, count=%d (avail_mem=" UINT64_FORMAT "K)",
+-       the_class->external_name(), java_lang_Class::classRedefinedCount(the_class->java_mirror()), os::available_memory() >> 10);
++       new_class->external_name(), java_lang_Class::classRedefinedCount(new_class->java_mirror()), os::available_memory() >> 10);
+     Events::log_redefinition(THREAD, "redefined class name=%s, count=%d",
+-                             the_class->external_name(),
+-                             java_lang_Class::classRedefinedCount(the_class->java_mirror()));
++                             new_class->external_name(),
++                             java_lang_Class::classRedefinedCount(new_class->java_mirror()));
+ 
+   }
+   _timer_rsc_phase2.stop();
+@@ -1914,25 +1914,10 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+ // Increment the classRedefinedCount field in the specific InstanceKlass
+ // and in all direct and indirect subclasses.
+ void VM_EnhancedRedefineClasses::increment_class_counter(InstanceKlass *ik, TRAPS) {
+-  oop class_mirror = ik->java_mirror();
++  oop class_mirror = ik->old_version()->java_mirror();
+   Klass* class_oop = java_lang_Class::as_Klass(class_mirror);
+   int new_count = java_lang_Class::classRedefinedCount(class_mirror) + 1;
+-  java_lang_Class::set_classRedefinedCount(ik->new_version()->java_mirror(), new_count);
+-
+-  if (class_oop != _the_class_oop) {
+-    // _the_class_oop count is printed at end of redefine_single_class()
+-    log_debug(redefine, class, subclass)("updated count in subclass=%s to %d", ik->external_name(), new_count);
+-  }
+-
+-  for (Klass *subk = ik->subklass(); subk != NULL;
+-       subk = subk->next_sibling()) {
+-    if (subk->is_instance_klass()) {
+-      // Only update instanceKlasses
+-      InstanceKlass *subik = InstanceKlass::cast(subk);
+-      // recursively do subclasses of the current subclass
+-      increment_class_counter(subik, THREAD);
+-    }
+-  }
++  java_lang_Class::set_classRedefinedCount(ik->java_mirror(), new_count);
+ }
+ 
+ void VM_EnhancedRedefineClasses::check_class(InstanceKlass* ik, TRAPS) {
+@@ -2063,7 +2048,7 @@ class AffectedKlassClosure : public KlassClosure {
+ 
+ /**
+   Find all affected classes by current redefinition (either because of redefine, class hierarchy or interface change).
+-  Affected classes are stored in _affected_klasses and parent classes always precedes child class.  
++  Affected classes are stored in _affected_klasses and parent classes always precedes child class.
+ */
+ jvmtiError VM_EnhancedRedefineClasses::find_sorted_affected_classes(TRAPS) {
+   for (int i = 0; i < _class_count; i++) {
+@@ -2112,7 +2097,7 @@ static bool match_second(void* value, KlassPair elem) {
+  First newly introduced classes (_class_defs) are scanned and then affected classed (_affected_klasses).
+  Affected flag is cleared (clear_redefinition_flag(Klass::MarkedAsAffected))
+  For each dependency create a KlassPair instance. Finnaly, affected classes (_affected_klasses) are sorted according to pairs.
+- 
++
+  TODO - the class file is potentionally parsed multiple times - introduce a cache?
+ */
+ jvmtiError VM_EnhancedRedefineClasses::do_topological_class_sorting(TRAPS) {
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0019-Allow-11715ha-class-initializer-calls.patch

@@ -0,0 +1,38 @@
+From 41d2963b54490601e22cf5309ed73f78566d35ae Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Thu, 21 Nov 2019 19:30:07 +0100
+Subject: [PATCH 19/50] Allow 11715ha class initializer calls
+
+---
+ src/hotspot/share/classfile/vmSymbols.hpp      | 1 +
+ src/hotspot/share/interpreter/linkResolver.cpp | 2 +-
+ 2 files changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/classfile/vmSymbols.hpp b/src/hotspot/share/classfile/vmSymbols.hpp
+index e2bac31b27f..6eeda3b8f68 100644
+--- a/src/hotspot/share/classfile/vmSymbols.hpp
++++ b/src/hotspot/share/classfile/vmSymbols.hpp
+@@ -340,6 +340,7 @@
+   /* common method and field names */                                                             \
+   template(object_initializer_name,                   "<init>")                                   \
+   template(class_initializer_name,                    "<clinit>")                                 \
++  template(ha_class_initializer_name,                 "$$ha$clinit")                              \
+   template(println_name,                              "println")                                  \
+   template(printStackTrace_name,                      "printStackTrace")                          \
+   template(main_name,                                 "main")                                     \
+diff --git a/src/hotspot/share/interpreter/linkResolver.cpp b/src/hotspot/share/interpreter/linkResolver.cpp
+index b9ccdee8cca..cb76d2ef50c 100644
+--- a/src/hotspot/share/interpreter/linkResolver.cpp
++++ b/src/hotspot/share/interpreter/linkResolver.cpp
+@@ -1009,7 +1009,7 @@ void LinkResolver::resolve_field(fieldDescriptor& fd,
+         assert(!m.is_null(), "information about the current method must be available for 'put' bytecodes");
+         bool is_initialized_static_final_update = (byte == Bytecodes::_putstatic &&
+                                                    fd.is_static() &&
+-                                                   !m()->is_static_initializer());
++                                                   !(m()->is_static_initializer() || m()->name() == vmSymbols::ha_class_initializer_name()));
+         bool is_initialized_instance_final_update = ((byte == Bytecodes::_putfield || byte == Bytecodes::_nofast_putfield) &&
+                                                      !fd.is_static() &&
+                                                      !m->is_object_initializer());
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0019-Disable-AllowEnhancedClassRedefinition-in-flight-rec.patch

@@ -1,31 +0,0 @@
-From 62fc66fa74886bd8bb15cd3e2084175f7ad5d0c7 Mon Sep 17 00:00:00 2001
-From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
-Date: Fri, 5 Feb 2021 23:30:49 +0100
-Subject: [PATCH 19/19] Disable AllowEnhancedClassRedefinition in flight
- recorder
-
----
- src/hotspot/share/runtime/arguments.cpp | 7 +++++++
- 1 file changed, 7 insertions(+)
-
-diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
-index 5053ad7ee61..c5635bb8537 100644
---- a/src/hotspot/share/runtime/arguments.cpp
-+++ b/src/hotspot/share/runtime/arguments.cpp
-@@ -3962,6 +3962,13 @@ jint Arguments::parse(const JavaVMInitArgs* initial_cmd_args) {
-   // Set object alignment values.
-   set_object_alignment();
- 
-+  if (FlightRecorder) {
-+    if (AllowEnhancedClassRedefinition) {
-+      warning("EnhancedClassRedefinition was disabled, it is not allowed in FlightRecorder.");
-+      AllowEnhancedClassRedefinition = false;
-+    }
-+  }
-+
-   setup_hotswap_agent();
- 
- #if !INCLUDE_CDS
--- 
-2.23.0
-

jb/project/tools/patches/dcevm/0020-Disable-HA-in-keytool.patch

@@ -0,0 +1,24 @@
+From 09799f079ef1148248ca60c917205003d2a565b3 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Tue, 26 Nov 2019 22:13:07 +0100
+Subject: [PATCH 20/50] Disable HA in keytool
+
+---
+ make/launcher/Launcher-java.base.gmk | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/make/launcher/Launcher-java.base.gmk b/make/launcher/Launcher-java.base.gmk
+index 5ee4530004b..88c1a14b2aa 100644
+--- a/make/launcher/Launcher-java.base.gmk
++++ b/make/launcher/Launcher-java.base.gmk
+@@ -63,6 +63,7 @@ endif
+ 
+ $(eval $(call SetupBuildLauncher, keytool, \
+     MAIN_CLASS := sun.security.tools.keytool.Main, \
++    JAVA_ARGS := -XX:+DisableHotswapAgent, \
+ ))
+ 
+ ################################################################################
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0021-Open-jdk-module-to-access-ClassInfo.CACHE.patch

@@ -0,0 +1,24 @@
+From e1d8f42f428d7d18f09f1a7098f56fdce808c3fe Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Thu, 28 Nov 2019 18:53:11 +0100
+Subject: [PATCH 21/50] Open jdk module to access ClassInfo.CACHE
+
+---
+ src/hotspot/share/runtime/arguments.cpp | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
+index ba6e78d6daa..0081f688120 100644
+--- a/src/hotspot/share/runtime/arguments.cpp
++++ b/src/hotspot/share/runtime/arguments.cpp
+@@ -4329,5 +4329,7 @@ void Arguments::setup_hotswap_agent() {
+   create_numbered_property("jdk.module.addopens", "java.desktop/java.beans=ALL-UNNAMED", addopens_count++);
+   // java.beans.Introspector access
+   create_numbered_property("jdk.module.addopens", "java.desktop/com.sun.beans=ALL-UNNAMED", addopens_count++);
++  // com.sun.beans.introspect.ClassInfo access
++  create_numbered_property("jdk.module.addopens", "java.desktop/com.sun.beans.introspect=ALL-UNNAMED", addopens_count++);
+ 
+ }
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0022-Open-java.base-java.io-module.patch

@@ -0,0 +1,25 @@
+From 8b7323c57ee07c03a02ba951ce6d453ec4cc1a54 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Sun, 8 Dec 2019 17:55:01 +0100
+Subject: [PATCH 22/50] Open java.base/java.io module
+
+---
+ src/hotspot/share/runtime/arguments.cpp | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
+index 0081f688120..0cdd8c88315 100644
+--- a/src/hotspot/share/runtime/arguments.cpp
++++ b/src/hotspot/share/runtime/arguments.cpp
+@@ -4325,6 +4325,8 @@ void Arguments::setup_hotswap_agent() {
+   create_numbered_property("jdk.module.addopens", "java.base/java.lang=ALL-UNNAMED", addopens_count++);
+   // Class of  field java.lang.reflect.Proxy/proxyCache
+   create_numbered_property("jdk.module.addopens", "java.base/jdk.internal.loader=ALL-UNNAMED", addopens_count++);
++  // Use to access java.io.Reader, java.io.InputStream, java.io.FileInputStream
++  create_numbered_property("jdk.module.addopens", "java.base/java.io=ALL-UNNAMED", addopens_count++);
+   // java.beans.Introspector access
+   create_numbered_property("jdk.module.addopens", "java.desktop/java.beans=ALL-UNNAMED", addopens_count++);
+   // java.beans.Introspector access
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0023-Fix-fieldDescriptor.inline.hpp.patch

@@ -0,0 +1,54 @@
+From 14c82a29cbf8254f8da626753ea34086d38e71b4 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@mailprofiler.com>
+Date: Fri, 6 Mar 2020 09:28:24 +0100
+Subject: [PATCH 23/50] Fix fieldDescriptor.inline.hpp
+
+---
+ .../share/prims/jvmtiEnhancedRedefineClasses.cpp       | 10 ++++++----
+ 1 file changed, 6 insertions(+), 4 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index efb9e806508..a404fd3f016 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -49,6 +49,7 @@
+ #include "runtime/deoptimization.hpp"
+ #include "runtime/jniHandles.inline.hpp"
+ #include "runtime/relocator.hpp"
++#include "runtime/fieldDescriptor.inline.hpp"
+ #include "utilities/bitMap.inline.hpp"
+ #include "prims/jvmtiThreadState.inline.hpp"
+ #include "utilities/events.hpp"
+@@ -490,6 +491,11 @@ void VM_EnhancedRedefineClasses::doit() {
+     flush_dependent_code(NULL, thread);
+   // }
+ 
++    // Adjust constantpool caches for all classes that reference methods of the evolved class.
++    ClearCpoolCacheAndUnpatch clear_cpool_cache(thread);
++    ClassLoaderDataGraph::classes_do(&clear_cpool_cache);
++
++
+   // JSR-292 support
+   if (_any_class_has_resolved_methods) {
+     bool trace_name_printed = false;
+@@ -1890,9 +1896,6 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+   }
+   */
+ 
+-  // Adjust constantpool caches for all classes that reference methods of the evolved class.
+-  ClearCpoolCacheAndUnpatch clear_cpool_cache(THREAD);
+-  ClassLoaderDataGraph::classes_do(&clear_cpool_cache);
+ 
+   {
+     ResourceMark rm(THREAD);
+@@ -1905,7 +1908,6 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+     Events::log_redefinition(THREAD, "redefined class name=%s, count=%d",
+                              new_class->external_name(),
+                              java_lang_Class::classRedefinedCount(new_class->java_mirror()));
+-
+   }
+   _timer_rsc_phase2.stop();
+ } // end redefine_single_class()
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0024-Fix-clear_cpool_cache.patch

@@ -0,0 +1,38 @@
+From 5a56f2278c0a79f4a26f369a55f4c1c4dab2621e Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@mailprofiler.com>
+Date: Fri, 6 Mar 2020 15:46:51 +0100
+Subject: [PATCH 24/50] Fix clear_cpool_cache
+
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp | 8 +++-----
+ 1 file changed, 3 insertions(+), 5 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index a404fd3f016..1f5a67f8866 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -491,11 +491,6 @@ void VM_EnhancedRedefineClasses::doit() {
+     flush_dependent_code(NULL, thread);
+   // }
+ 
+-    // Adjust constantpool caches for all classes that reference methods of the evolved class.
+-    ClearCpoolCacheAndUnpatch clear_cpool_cache(thread);
+-    ClassLoaderDataGraph::classes_do(&clear_cpool_cache);
+-
+-
+   // JSR-292 support
+   if (_any_class_has_resolved_methods) {
+     bool trace_name_printed = false;
+@@ -1896,6 +1891,9 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+   }
+   */
+ 
++  // Adjust constantpool caches for all classes that reference methods of the evolved class.
++  ClearCpoolCacheAndUnpatch clear_cpool_cache(THREAD);
++  ClassLoaderDataGraph::classes_do(&clear_cpool_cache);
+ 
+   {
+     ResourceMark rm(THREAD);
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0025-Refactor-ClearCpoolCacheAndUnpatch.patch

@@ -0,0 +1,163 @@
+From c1aafaafaf15780d6bca1312162d551da4f63036 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@mailprofiler.com>
+Date: Mon, 9 Mar 2020 09:54:04 +0100
+Subject: [PATCH 25/50] Refactor ClearCpoolCacheAndUnpatch
+
+Call it after redefinition of all classes
+---
+ make/common/MakeBase.gmk                      |  4 +-
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 98 ++++---------------
+ 2 files changed, 21 insertions(+), 81 deletions(-)
+
+diff --git a/make/common/MakeBase.gmk b/make/common/MakeBase.gmk
+index a040effe83a..c33a7d52ddb 100644
+--- a/make/common/MakeBase.gmk
++++ b/make/common/MakeBase.gmk
+@@ -1044,7 +1044,9 @@ DependOnVariableHelper = \
+               $(info NewVariable $1: >$(strip $($1))<) \
+               $(info OldVariable $1: >$(strip $($1_old))<)) \
+           $(call WriteFile, $1_old:=$(call DoubleDollar,$(call EscapeHash,$($1))), \
+-              $($1_filename))) \
++ $($1_filename)) \
++ $(eval $($1_filename): ) \
++ ) \
+         $($1_filename) \
+     )
+ 
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 1f5a67f8866..24fb76b6de4 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -491,6 +491,11 @@ void VM_EnhancedRedefineClasses::doit() {
+     flush_dependent_code(NULL, thread);
+   // }
+ 
++    // Adjust constantpool caches for all classes that reference methods of the evolved class.
++    ClearCpoolCacheAndUnpatch clear_cpool_cache(thread);
++    ClassLoaderDataGraph::classes_do(&clear_cpool_cache);
++
++
+   // JSR-292 support
+   if (_any_class_has_resolved_methods) {
+     bool trace_name_printed = false;
+@@ -1383,86 +1388,23 @@ void VM_EnhancedRedefineClasses::unpatch_bytecode(Method* method) {
+     }
+   }
+ 
+-// Unevolving classes may point to methods of the_class directly
++// Unevolving classes may point to old methods directly
+ // from their constant pool caches, itables, and/or vtables. We
+-// use the ClassLoaderDataGraph::classes_do() facility and this helper
+-// to fix up these pointers.
+-// Adjust cpools and vtables closure
++// use the SystemDictionary::classes_do() facility and this helper
++// to fix up these pointers. Additional field offsets and vtable indices
++// in the constant pool cache entries are fixed.
++//
++// Note: We currently don't support updating the vtable in
++// arrayKlassOops. See Open Issues in jvmtiRedefineClasses.hpp.
+ void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
+-  // This is a very busy routine. We don't want too much tracing
+-  // printed out.
+-  bool trace_name_printed = false;
+-  InstanceKlass *the_class = InstanceKlass::cast(_the_class_oop);
+-
+-  // If the class being redefined is java.lang.Object, we need to fix all
+-  // array class vtables also
+-  if (k->is_array_klass() && _the_class_oop == SystemDictionary::Object_klass()) {
+-    k->vtable().adjust_method_entries(the_class, &trace_name_printed);
+-  } else if (k->is_instance_klass()) {
+-    HandleMark hm(_thread);
+-    InstanceKlass *ik = InstanceKlass::cast(k);
++  if (!k->is_instance_klass()) {
++	return;
++  }
+ 
+-    // HotSpot specific optimization! HotSpot does not currently
+-    // support delegation from the bootstrap class loader to a
+-    // user-defined class loader. This means that if the bootstrap
+-    // class loader is the initiating class loader, then it will also
+-    // be the defining class loader. This also means that classes
+-    // loaded by the bootstrap class loader cannot refer to classes
+-    // loaded by a user-defined class loader. Note: a user-defined
+-    // class loader can delegate to the bootstrap class loader.
+-    //
+-    // If the current class being redefined has a user-defined class
+-    // loader as its defining class loader, then we can skip all
+-    // classes loaded by the bootstrap class loader.
+-    bool is_user_defined =
+-            InstanceKlass::cast(_the_class_oop)->class_loader() != NULL;
+-    if (is_user_defined && ik->class_loader() == NULL) {
+-       return;
+-    }
+-
+-    // Fix the vtable embedded in the_class and subclasses of the_class,
+-    // if one exists. We discard scratch_class and we don't keep an
+-    // InstanceKlass around to hold obsolete methods so we don't have
+-    // any other InstanceKlass embedded vtables to update. The vtable
+-    // holds the Method*s for virtual (but not final) methods.
+-    // Default methods, or concrete methods in interfaces are stored
+-    // in the vtable, so if an interface changes we need to check
+-    // adjust_method_entries() for every InstanceKlass, which will also
+-    // adjust the default method vtable indices.
+-    // We also need to adjust any default method entries that are
+-    // not yet in the vtable, because the vtable setup is in progress.
+-    // This must be done after we adjust the default_methods and
+-    // default_vtable_indices for methods already in the vtable.
+-    // If redefining Unsafe, walk all the vtables looking for entries.
+-// FIXME - code from standard redefine - if needed, it should switch to new_class
+-//    if (ik->vtable_length() > 0 && (_the_class_oop->is_interface()
+-//        || _the_class_oop == SystemDictionary::internal_Unsafe_klass()
+-//        || ik->is_subtype_of(_the_class_oop))) {
+-//      // ik->vtable() creates a wrapper object; rm cleans it up
+-//      ResourceMark rm(_thread);
+-//
+-//      ik->vtable()->adjust_method_entries(the_class, &trace_name_printed);
+-//      ik->adjust_default_methods(the_class, &trace_name_printed);
+-//    }
+-
+-    // If the current class has an itable and we are either redefining an
+-    // interface or if the current class is a subclass of the_class, then
+-    // we potentially have to fix the itable. If we are redefining an
+-    // interface, then we have to call adjust_method_entries() for
+-    // every InstanceKlass that has an itable since there isn't a
+-    // subclass relationship between an interface and an InstanceKlass.
+-    // If redefining Unsafe, walk all the itables looking for entries.
+-// FIXME - code from standard redefine - if needed, it should switch to new_class
+-//    if (ik->itable_length() > 0 && (_the_class_oop->is_interface()
+-//        || _the_class_oop == SystemDictionary::internal_Unsafe_klass()
+-//        || ik->is_subclass_of(_the_class_oop))) {
+-//      // ik->itable() creates a wrapper object; rm cleans it up
+-//      ResourceMark rm(_thread);
+-//
+-//      ik->itable()->adjust_method_entries(the_class, &trace_name_printed);
+-//    }
++  HandleMark hm(_thread);
++  InstanceKlass *ik = InstanceKlass::cast(k);
+ 
+-   constantPoolHandle other_cp = constantPoolHandle(ik->constants());
++  constantPoolHandle other_cp = constantPoolHandle(ik->constants());
+ 
+   // Update host klass of anonymous classes (for example, produced by lambdas) to newest version.
+   if (ik->is_anonymous() && ik->host_klass()->new_version() != NULL) {
+@@ -1491,7 +1433,6 @@ void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
+   if (RewriteBytecodes) {
+     ik->methods_do(unpatch_bytecode);
+   }
+-  }
+ }
+ 
+ // Clean method data for this class
+@@ -1891,9 +1832,6 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+   }
+   */
+ 
+-  // Adjust constantpool caches for all classes that reference methods of the evolved class.
+-  ClearCpoolCacheAndUnpatch clear_cpool_cache(THREAD);
+-  ClassLoaderDataGraph::classes_do(&clear_cpool_cache);
+ 
+   {
+     ResourceMark rm(THREAD);
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0026-Fix-class-cast-exception-on-redefinition-of-class-A-.patch

@@ -1,7 +1,7 @@
-From 002ad1880190d0749f8f8d325c587fd9275bdab2 Mon Sep 17 00:00:00 2001
+From d6a3286b9b57df4c09d859e38833f2e3dc1574d9 Mon Sep 17 00:00:00 2001
 From: Vladimir Dvorak <vladimir.dvorak@mailprofiler.com>
 Date: Wed, 11 Mar 2020 14:19:34 +0100
-Subject: [PATCH 04/18] Fix class cast exception on redefinition of class A,
+Subject: [PATCH 26/50] Fix class cast exception on redefinition of class A,
  that is superclass of B that has anonymous class C
 
 ---
@@ -9,7 +9,7 @@ Subject: [PATCH 04/18] Fix class cast exception on redefinition of class A,
  1 file changed, 4 insertions(+), 1 deletion(-)
 
 diff --git a/src/hotspot/share/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
-index c28ed956ccf..7eb1b01c785 100644
+index 9b6ba7e9304..8cbd4b8edf2 100644
 --- a/src/hotspot/share/oops/instanceKlass.cpp
 +++ b/src/hotspot/share/oops/instanceKlass.cpp
 @@ -788,7 +788,10 @@ bool InstanceKlass::link_class_impl(bool throw_verifyerror, TRAPS) {
@@ -17,13 +17,13 @@ index c28ed956ccf..7eb1b01c785 100644
      if (!is_linked()) {
        if (!is_rewritten()) {
 -        {
-+        // (DCEVM): If class A is being redefined and class B->A (B is extended from A) and B is host class of anonymous class C
-+        // then second redefinition fails with cannot cast klass exception. So we currently turn off bytecode verification
++        // In cases, if class A is being redefined and class B->A (B is extended from A) and B is host class of anonymous class C
++        // then second redefinition fails with cannot cast klass exception. So we currently turn off bytecode verification 
 +        // on redefinition.
-+        if (!AllowEnhancedClassRedefinition || !newest_version()->is_redefining()) {
++        if (!newest_version()->is_redefining()) {
            bool verify_ok = verify_code(throw_verifyerror, THREAD);
            if (!verify_ok) {
              return false;
 -- 
-2.23.0
+2.24.3 (Apple Git-128)
 

jb/project/tools/patches/dcevm/0027-Update-klass-reference-in-Klass.implementor.patch

@@ -0,0 +1,60 @@
+From a4ab453f532839ea3b09027736bb6e74d288bf1d Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Fri, 10 Apr 2020 23:28:07 +0200
+Subject: [PATCH 27/50] Update klass reference in Klass.implementor()
+
+If interface X is removed from class Y then old reference to Y could be
+stored in X.implementor()
+---
+ .../share/prims/jvmtiEnhancedRedefineClasses.cpp     | 12 ++++++++++++
+ .../share/prims/jvmtiEnhancedRedefineClasses.hpp     | 11 -----------
+ 2 files changed, 12 insertions(+), 11 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 24fb76b6de4..f6d2d3a40fe 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -1411,6 +1411,18 @@ void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
+     ik->set_host_klass(InstanceKlass::cast(ik->host_klass()->newest_version()));
+   }
+ 
++  // Update implementor if there is only one, in this case implementor() can reference old class
++  if (ik->is_interface()) {
++    Klass* implKlass = ik->implementor();
++    if (implKlass != NULL && implKlass != ik && implKlass->new_version() != NULL) {
++      InstanceKlass* newest_impl = InstanceKlass::cast(implKlass->newest_version());
++      ik->init_implementor();
++      if (newest_impl->implements_interface(ik)) {
++        ik->add_implementor(newest_impl);
++      }
++    }
++  }
++
+   for (int i = 0; i < other_cp->length(); i++) {
+     if (other_cp->tag_at(i).is_klass()) {
+       Klass* klass = other_cp->resolved_klass_at(i);
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+index 5b3ebc13661..2d114635ee5 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+@@ -69,17 +69,6 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+   // RetransformClasses.  Indicate which.
+   JvmtiClassLoadKind          _class_load_kind;
+ 
+-  // _index_map_count is just an optimization for knowing if
+-  // _index_map_p contains any entries.
+-  int                         _index_map_count;
+-  intArray *                  _index_map_p;
+-
+-  // _operands_index_map_count is just an optimization for knowing if
+-  // _operands_index_map_p contains any entries.
+-  int                         _operands_cur_length;
+-  int                         _operands_index_map_count;
+-  intArray *                  _operands_index_map_p;
+-
+   GrowableArray<InstanceKlass*>*      _new_classes;
+   jvmtiError                  _res;
+ 
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0028-Fix-DirectMethodHandle-accessors-klasses.patch

@@ -0,0 +1,96 @@
+From 015c9c88e63f2dde4b8b2a09d2832a8c2a3caf25 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Fri, 10 Apr 2020 23:30:21 +0200
+Subject: [PATCH 28/50] Fix DirectMethodHandle accessors klasses
+
+---
+ src/hotspot/share/classfile/javaClasses.cpp | 28 +++++++++++++++------
+ src/hotspot/share/classfile/javaClasses.hpp |  4 +++
+ 2 files changed, 24 insertions(+), 8 deletions(-)
+
+diff --git a/src/hotspot/share/classfile/javaClasses.cpp b/src/hotspot/share/classfile/javaClasses.cpp
+index a89443d22ea..ea0588e5388 100644
+--- a/src/hotspot/share/classfile/javaClasses.cpp
++++ b/src/hotspot/share/classfile/javaClasses.cpp
+@@ -3641,14 +3641,20 @@ void java_lang_invoke_DirectMethodHandle_StaticAccessor::set_static_offset(oop d
+   dmh->long_field_put(_static_offset_offset, static_offset);
+ }
+ 
++#define DIRECTMETHODHANDLE_STATIC_ACCESSOR_FIELDS_DO(macro) \
++  macro(_static_offset_offset, k, vmSymbols::static_offset_name(), long_signature, false)
+ 
+ void java_lang_invoke_DirectMethodHandle_StaticAccessor::compute_offsets() {
+-  Klass* klass_oop = SystemDictionary::DirectMethodHandle_StaticAccessor_klass();
+-  if (klass_oop != NULL) {
+-    compute_offset(_static_offset_offset, InstanceKlass::cast(klass_oop), vmSymbols::static_offset_name(), vmSymbols::long_signature());
+-  }
++  InstanceKlass* k = SystemDictionary::DirectMethodHandle_StaticAccessor_klass();
++  DIRECTMETHODHANDLE_STATIC_ACCESSOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
+ }
+ 
++#if INCLUDE_CDS
++void java_lang_invoke_DirectMethodHandle_StaticAccessor::serialize_offsets(SerializeClosure* f) {
++  DIRECTMETHODHANDLE_STATIC_ACCESSOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
++}
++#endif
++
+ // Support for java_lang_invoke_DirectMethodHandle$Accessor
+ 
+ int java_lang_invoke_DirectMethodHandle_Accessor::_field_offset_offset;
+@@ -3663,14 +3669,20 @@ void java_lang_invoke_DirectMethodHandle_Accessor::set_field_offset(oop dmh, int
+   dmh->int_field_put(_field_offset_offset, field_offset);
+ }
+ 
++#define DIRECTMETHODHANDLE_ACCESSOR_FIELDS_DO(macro) \
++  macro(_field_offset_offset, k, vmSymbols::field_offset_name(), int_signature, false)
+ 
+ void java_lang_invoke_DirectMethodHandle_Accessor::compute_offsets() {
+-  Klass* klass_oop = SystemDictionary::DirectMethodHandle_Accessor_klass();
+-  if (klass_oop != NULL) {
+-    compute_offset(_field_offset_offset, InstanceKlass::cast(klass_oop), vmSymbols::field_offset_name(), vmSymbols::int_signature());
+-  }
++  InstanceKlass* k = SystemDictionary::DirectMethodHandle_Accessor_klass();
++  DIRECTMETHODHANDLE_ACCESSOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
+ }
+ 
++#if INCLUDE_CDS
++void java_lang_invoke_DirectMethodHandle_Accessor::serialize_offsets(SerializeClosure* f) {
++  DIRECTMETHODHANDLE_ACCESSOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
++}
++#endif
++
+ // Support for java_lang_invoke_MethodHandle
+ 
+ int java_lang_invoke_MethodHandle::_type_offset;
+diff --git a/src/hotspot/share/classfile/javaClasses.hpp b/src/hotspot/share/classfile/javaClasses.hpp
+index ceb1670df5d..55f9fa62e2b 100644
+--- a/src/hotspot/share/classfile/javaClasses.hpp
++++ b/src/hotspot/share/classfile/javaClasses.hpp
+@@ -67,6 +67,8 @@
+   f(java_lang_invoke_LambdaForm) \
+   f(java_lang_invoke_MethodType) \
+   f(java_lang_invoke_CallSite) \
++  f(java_lang_invoke_DirectMethodHandle_StaticAccessor) \
++  f(java_lang_invoke_DirectMethodHandle_Accessor) \
+   f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
+   f(java_security_AccessControlContext) \
+   f(java_lang_reflect_AccessibleObject) \
+@@ -1077,6 +1079,7 @@ class java_lang_invoke_DirectMethodHandle_StaticAccessor: AllStatic {
+   static bool is_instance(oop obj) {
+     return obj != NULL && is_subclass(obj->klass());
+   }
++  static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
+ };
+ 
+ // Interface to java.lang.invoke.DirectMethodHandle$Accessor objects
+@@ -1101,6 +1104,7 @@ class java_lang_invoke_DirectMethodHandle_Accessor: AllStatic {
+   static bool is_instance(oop obj) {
+     return obj != NULL && is_subclass(obj->klass());
+   }
++  static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
+ };
+ 
+ 
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0029-cleanup-direct-method-handles-code.patch

@@ -0,0 +1,60 @@
+From 14005f6176420c16fa1d152c78a3dacd26ecb647 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Sat, 11 Apr 2020 12:07:43 +0200
+Subject: [PATCH 29/50] cleanup direct method handles code
+
+---
+ src/hotspot/share/classfile/javaClasses.hpp        | 10 ++++------
+ src/hotspot/share/classfile/javaClasses.inline.hpp |  8 ++++++++
+ 2 files changed, 12 insertions(+), 6 deletions(-)
+
+diff --git a/src/hotspot/share/classfile/javaClasses.hpp b/src/hotspot/share/classfile/javaClasses.hpp
+index 55f9fa62e2b..da004d1b307 100644
+--- a/src/hotspot/share/classfile/javaClasses.hpp
++++ b/src/hotspot/share/classfile/javaClasses.hpp
+@@ -1076,9 +1076,8 @@ class java_lang_invoke_DirectMethodHandle_StaticAccessor: AllStatic {
+   static bool is_subclass(Klass* klass) {
+     return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_StaticAccessor_klass());
+   }
+-  static bool is_instance(oop obj) {
+-    return obj != NULL && is_subclass(obj->klass());
+-  }
++  static bool is_instance(oop obj);
++
+   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
+ };
+ 
+@@ -1101,9 +1100,8 @@ class java_lang_invoke_DirectMethodHandle_Accessor: AllStatic {
+   static bool is_subclass(Klass* klass) {
+     return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_Accessor_klass());
+   }
+-  static bool is_instance(oop obj) {
+-    return obj != NULL && is_subclass(obj->klass());
+-  }
++  static bool is_instance(oop obj);
++
+   static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
+ };
+ 
+diff --git a/src/hotspot/share/classfile/javaClasses.inline.hpp b/src/hotspot/share/classfile/javaClasses.inline.hpp
+index 6c5787f4b70..ba9cffa8c62 100644
+--- a/src/hotspot/share/classfile/javaClasses.inline.hpp
++++ b/src/hotspot/share/classfile/javaClasses.inline.hpp
+@@ -175,6 +175,14 @@ inline bool java_lang_invoke_DirectMethodHandle::is_instance(oop obj) {
+   return obj != NULL && is_subclass(obj->klass());
+ }
+ 
++inline bool java_lang_invoke_DirectMethodHandle_StaticAccessor::is_instance(oop obj) {
++  return obj != NULL && is_subclass(obj->klass());
++}
++
++inline bool java_lang_invoke_DirectMethodHandle_Accessor::is_instance(oop obj) {
++  return obj != NULL && is_subclass(obj->klass());
++}
++
+ inline bool java_lang_Module::is_instance(oop obj) {
+   return obj != NULL && obj->klass() == SystemDictionary::Module_klass();
+ }
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0030-Add-init_implementor_from_redefine-that-skips-compil.patch

@@ -0,0 +1,68 @@
+From 990ffe4111fe73c3a183f8d35402cbf9e81bd587 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Sat, 11 Apr 2020 17:52:13 +0200
+Subject: [PATCH 30/50] Add init_implementor_from_redefine, that skips compiler
+ lock assert
+
+---
+ src/hotspot/share/oops/instanceKlass.cpp               | 10 +++++++++-
+ src/hotspot/share/oops/instanceKlass.hpp               |  1 +
+ .../share/prims/jvmtiEnhancedRedefineClasses.cpp       |  2 +-
+ 3 files changed, 11 insertions(+), 2 deletions(-)
+
+diff --git a/src/hotspot/share/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
+index 8cbd4b8edf2..c04bdf5abfc 100644
+--- a/src/hotspot/share/oops/instanceKlass.cpp
++++ b/src/hotspot/share/oops/instanceKlass.cpp
+@@ -789,7 +789,7 @@ bool InstanceKlass::link_class_impl(bool throw_verifyerror, TRAPS) {
+     if (!is_linked()) {
+       if (!is_rewritten()) {
+         // In cases, if class A is being redefined and class B->A (B is extended from A) and B is host class of anonymous class C
+-        // then second redefinition fails with cannot cast klass exception. So we currently turn off bytecode verification 
++        // then second redefinition fails with cannot cast klass exception. So we currently turn off bytecode verification
+         // on redefinition.
+         if (!newest_version()->is_redefining()) {
+           bool verify_ok = verify_code(throw_verifyerror, THREAD);
+@@ -1139,6 +1139,14 @@ void InstanceKlass::init_implementor() {
+   }
+ }
+ 
++void InstanceKlass::init_implementor_from_redefine() {
++  assert(is_interface(), "not interface");
++  Klass** addr = adr_implementor();
++  assert(addr != NULL, "null addr");
++  if (addr != NULL) {
++    *addr = NULL;
++  }
++}
+ 
+ void InstanceKlass::process_interfaces(Thread *thread) {
+   // link this class into the implementors list of every interface it implements
+diff --git a/src/hotspot/share/oops/instanceKlass.hpp b/src/hotspot/share/oops/instanceKlass.hpp
+index 2cc98b636f1..e8107a39813 100644
+--- a/src/hotspot/share/oops/instanceKlass.hpp
++++ b/src/hotspot/share/oops/instanceKlass.hpp
+@@ -1020,6 +1020,7 @@ public:
+   int  nof_implementors() const;
+   void add_implementor(Klass* k);  // k is a new class that implements this interface
+   void init_implementor();           // initialize
++  void init_implementor_from_redefine();           // initialize
+ 
+   // link this class into the implementors list of every interface it implements
+   void process_interfaces(Thread *thread);
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index f6d2d3a40fe..aac9ba0911f 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -1416,7 +1416,7 @@ void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
+     Klass* implKlass = ik->implementor();
+     if (implKlass != NULL && implKlass != ik && implKlass->new_version() != NULL) {
+       InstanceKlass* newest_impl = InstanceKlass::cast(implKlass->newest_version());
+-      ik->init_implementor();
++      ik->init_implementor_from_redefine();
+       if (newest_impl->implements_interface(ik)) {
+         ik->add_implementor(newest_impl);
+       }
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0031-not-nullable-oop_store_not_null-method-handle-NULL-i.patch

@@ -0,0 +1,73 @@
+From 9dcddc7c2573c34579161e3ad1240b029dda1e96 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Mon, 13 Apr 2020 20:59:35 +0200
+Subject: [PATCH 31/50] not nullable oop_store_not_null() method+handle NULL in
+ mem_name in dmh
+
+---
+ .../share/prims/jvmtiEnhancedRedefineClasses.cpp | 16 ++++++++++------
+ 1 file changed, 10 insertions(+), 6 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index aac9ba0911f..8d861ef43c9 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -225,13 +225,15 @@ void VM_EnhancedRedefineClasses::mark_as_scavengable(nmethod* nm) {
+ // TODO comment
+ struct StoreBarrier {
+   // TODO: j10 review change ::oop_store -> HeapAccess<>::oop_store
+-  template <class T> static void oop_store(T* p, oop v) { HeapAccess<>::oop_store(p, v); }
++  template <class T> static void oop_store_not_null(T* p, oop v) { HeapAccess<IS_NOT_NULL>::oop_store(p, v); }
++  template <class T> static void oop_store(T* p) { HeapAccess<>::oop_store(p, oop(NULL)); }
+ };
+ 
+ 
+ // TODO comment
+ struct StoreNoBarrier {
+-  template <class T> static void oop_store(T* p, oop v) { RawAccess<IS_NOT_NULL>::oop_store(p, v); }
++  template <class T> static void oop_store_not_null(T* p, oop v) { RawAccess<IS_NOT_NULL>::oop_store(p, v); }
++  template <class T> static void oop_store(T* p) { RawAccess<>::oop_store(p, oop(NULL)); }
+ };
+ 
+ /**
+@@ -309,6 +311,9 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+   bool update_direct_method_handle(oop obj) {
+     // Always update member name first.
+     oop mem_name = java_lang_invoke_DirectMethodHandle::member(obj);
++    if (mem_name == NULL) {
++      return true;
++    }
+     if (!update_member_name(mem_name)) {
+       return false;
+     }
+@@ -347,7 +352,7 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+         assert(obj == InstanceKlass::cast(klass)->java_mirror(), "just checking");
+         if (klass->new_version() != NULL) {
+           obj = InstanceKlass::cast(klass->new_version())->java_mirror();
+-          S::oop_store(p, obj);
++          S::oop_store_not_null(p, obj);
+           oop_updated = true;
+         }
+       }
+@@ -363,7 +368,7 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+       if (!update_direct_method_handle(obj)) {
+         // DMH is no longer valid, replace it with null reference.
+         // See note above. We probably want to replace this with something more meaningful.
+-        S::oop_store(p, NULL);
++        S::oop_store(p);
+       }
+     }
+   }
+@@ -1430,8 +1435,7 @@ void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
+         // Constant pool entry points to redefined class -- update to the new version
+         other_cp->klass_at_put(i, klass->newest_version());
+       }
+-      klass = other_cp->resolved_klass_at(i);
+-      assert(klass->new_version() == NULL, "Must be new klass!");
++      assert(other_cp->resolved_klass_at(i)->new_version() == NULL, "Must be new klass!");
+     }
+   }
+ 
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0032-add-jvmtiEnhancedRedefineClasses.-to-CMakeLists.txt.patch

@@ -1,7 +1,7 @@
-From 6a78dda15c66cbba1ca6a2d7f3df3a55fc087f50 Mon Sep 17 00:00:00 2001
+From 800b44f545c7b99026d203690def30ec4b9ed08e Mon Sep 17 00:00:00 2001
 From: Artem Khvastunov <artem.khvastunov@jetbrains.com>
 Date: Tue, 14 Apr 2020 19:11:35 +0200
-Subject: [PATCH 12/18] add jvmtiEnhancedRedefineClasses.* to CMakeLists.txt
+Subject: [PATCH 32/50] add jvmtiEnhancedRedefineClasses.* to CMakeLists.txt
 
 ---
  jb/project/hotspot-cmake/CMakeLists.txt | 2 ++
@@ -28,5 +28,5 @@ index 8b552c27206..6516e39058f 100644
  ../../../src/hotspot/share/prims/jvmtiEnvBase.cpp
  ../../../src/hotspot/share/prims/methodHandles.cpp
 -- 
-2.23.0
+2.24.3 (Apple Git-128)
 

jb/project/tools/patches/dcevm/0033-migrate-DCEVM-to-11.0.7.patch

@@ -0,0 +1,25 @@
+From e009b4fcc48e9719b5b896f7f3838fbc7c579ba7 Mon Sep 17 00:00:00 2001
+From: Artem Khvastunov <artem.khvastunov@jetbrains.com>
+Date: Sun, 19 Apr 2020 11:36:12 +0200
+Subject: [PATCH 33/50] migrate DCEVM to 11.0.7
+
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+index 2d114635ee5..6cabdca9c27 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+@@ -30,7 +30,7 @@
+ #include "memory/resourceArea.hpp"
+ #include "oops/objArrayKlass.hpp"
+ #include "oops/objArrayOop.hpp"
+-#include "runtime/vm_operations.hpp"
++#include "runtime/vmOperations.hpp"
+ #include "gc/shared/vmGCOperations.hpp"
+ #include "../../../java.base/unix/native/include/jni_md.h"
+ 
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0034-Fix-11.0.7-compilation-issues.patch

@@ -0,0 +1,33 @@
+From 5653e2a5f05a9693f934b0f9c4d9286c01576807 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Fri, 8 May 2020 21:07:50 +0200
+Subject: [PATCH 34/50] Fix 11.0.7 compilation issues
+
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+index 6cabdca9c27..ed44f0e27ce 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+@@ -16,6 +16,8 @@
+  * 2 along with this work; if not, write to the Free Software Foundation,
+  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+  *
++ *
++ *
+  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+  * or visit www.oracle.com if you need additional information or have any
+  * questions.
+@@ -30,7 +32,6 @@
+ #include "memory/resourceArea.hpp"
+ #include "oops/objArrayKlass.hpp"
+ #include "oops/objArrayOop.hpp"
+-#include "runtime/vmOperations.hpp"
+ #include "gc/shared/vmGCOperations.hpp"
+ #include "../../../java.base/unix/native/include/jni_md.h"
+ 
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0035-Use-INCLUDE_CDS-condition-on-UseSharedSpaces-block-f.patch

@@ -0,0 +1,33 @@
+From 0b9b021f889ec001d579d192f1bd9a7a43f63871 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Sat, 9 May 2020 10:08:17 +0200
+Subject: [PATCH 35/50] Use INCLUDE_CDS condition on "UseSharedSpaces" block
+ from master
+
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 8d861ef43c9..660bf3a2e97 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -467,6 +467,7 @@ public:
+ void VM_EnhancedRedefineClasses::doit() {
+   Thread *thread = Thread::current();
+ 
++#if INCLUDE_CDS
+   if (UseSharedSpaces) {
+     // Sharing is enabled so we remap the shared readonly space to
+     // shared readwrite, private just in case we need to redefine
+@@ -478,6 +479,7 @@ void VM_EnhancedRedefineClasses::doit() {
+       return;
+     }
+   }
++#endif
+ 
+   // Mark methods seen on stack and everywhere else so old methods are not
+   // cleaned up if they're on the stack.
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0036-Access-com.sun.beans.util-HotswapAgent-patch.patch

@@ -0,0 +1,141 @@
+From 9f4b84339b55187b742682bd84fdb0e6e121917c Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Sat, 16 May 2020 15:11:40 +0200
+Subject: [PATCH 36/50] Access com.sun.beans.util - HotswapAgent patch
+
+---
+ src/hotspot/share/runtime/arguments.cpp       |  2 ++
+ .../sun/beans/introspect/package-info.java    | 26 +++++++++++++++++++
+ .../classes/com/sun/beans/package-info.java   | 26 +++++++++++++++++++
+ .../com/sun/beans/util/package-info.java      | 26 +++++++++++++++++++
+ .../share/classes/module-info.java            |  3 +++
+ 5 files changed, 83 insertions(+)
+ create mode 100644 src/java.desktop/share/classes/com/sun/beans/introspect/package-info.java
+ create mode 100644 src/java.desktop/share/classes/com/sun/beans/package-info.java
+ create mode 100644 src/java.desktop/share/classes/com/sun/beans/util/package-info.java
+
+diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
+index 0cdd8c88315..72580b384dd 100644
+--- a/src/hotspot/share/runtime/arguments.cpp
++++ b/src/hotspot/share/runtime/arguments.cpp
+@@ -4333,5 +4333,7 @@ void Arguments::setup_hotswap_agent() {
+   create_numbered_property("jdk.module.addopens", "java.desktop/com.sun.beans=ALL-UNNAMED", addopens_count++);
+   // com.sun.beans.introspect.ClassInfo access
+   create_numbered_property("jdk.module.addopens", "java.desktop/com.sun.beans.introspect=ALL-UNNAMED", addopens_count++);
++  // com.sun.beans.introspect.util.Cache access
++  create_numbered_property("jdk.module.addopens", "java.desktop/com.sun.beans.util=ALL-UNNAMED", addopens_count++);
+ 
+ }
+diff --git a/src/java.desktop/share/classes/com/sun/beans/introspect/package-info.java b/src/java.desktop/share/classes/com/sun/beans/introspect/package-info.java
+new file mode 100644
+index 00000000000..6636e4dd62a
+--- /dev/null
++++ b/src/java.desktop/share/classes/com/sun/beans/introspect/package-info.java
+@@ -0,0 +1,26 @@
++/*
++ * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
++ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
++ *
++ * This code is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 only, as
++ * published by the Free Software Foundation.  Oracle designates this
++ * particular file as subject to the "Classpath" exception as provided
++ * by Oracle in the LICENSE file that accompanied this code.
++ *
++ * This code is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
++ * version 2 for more details (a copy is included in the LICENSE file that
++ * accompanied this code).
++ *
++ * You should have received a copy of the GNU General Public License version
++ * 2 along with this work; if not, write to the Free Software Foundation,
++ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
++ *
++ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
++ * or visit www.oracle.com if you need additional information or have any
++ * questions.
++ */
++
++package com.sun.beans.introspect;
+diff --git a/src/java.desktop/share/classes/com/sun/beans/package-info.java b/src/java.desktop/share/classes/com/sun/beans/package-info.java
+new file mode 100644
+index 00000000000..5c097eeaa53
+--- /dev/null
++++ b/src/java.desktop/share/classes/com/sun/beans/package-info.java
+@@ -0,0 +1,26 @@
++/*
++ * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
++ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
++ *
++ * This code is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 only, as
++ * published by the Free Software Foundation.  Oracle designates this
++ * particular file as subject to the "Classpath" exception as provided
++ * by Oracle in the LICENSE file that accompanied this code.
++ *
++ * This code is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
++ * version 2 for more details (a copy is included in the LICENSE file that
++ * accompanied this code).
++ *
++ * You should have received a copy of the GNU General Public License version
++ * 2 along with this work; if not, write to the Free Software Foundation,
++ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
++ *
++ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
++ * or visit www.oracle.com if you need additional information or have any
++ * questions.
++ */
++
++package com.sun.beans;
+diff --git a/src/java.desktop/share/classes/com/sun/beans/util/package-info.java b/src/java.desktop/share/classes/com/sun/beans/util/package-info.java
+new file mode 100644
+index 00000000000..2d5d735ffa8
+--- /dev/null
++++ b/src/java.desktop/share/classes/com/sun/beans/util/package-info.java
+@@ -0,0 +1,26 @@
++/*
++ * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
++ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
++ *
++ * This code is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 only, as
++ * published by the Free Software Foundation.  Oracle designates this
++ * particular file as subject to the "Classpath" exception as provided
++ * by Oracle in the LICENSE file that accompanied this code.
++ *
++ * This code is distributed in the hope that it will be useful, but WITHOUT
++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
++ * version 2 for more details (a copy is included in the LICENSE file that
++ * accompanied this code).
++ *
++ * You should have received a copy of the GNU General Public License version
++ * 2 along with this work; if not, write to the Free Software Foundation,
++ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
++ *
++ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
++ * or visit www.oracle.com if you need additional information or have any
++ * questions.
++ */
++
++package com.sun.beans.util;
+diff --git a/src/java.desktop/share/classes/module-info.java b/src/java.desktop/share/classes/module-info.java
+index f9cf021311f..e61ba7572cf 100644
+--- a/src/java.desktop/share/classes/module-info.java
++++ b/src/java.desktop/share/classes/module-info.java
+@@ -104,6 +104,9 @@ module java.desktop {
+     exports javax.swing.text.rtf;
+     exports javax.swing.tree;
+     exports javax.swing.undo;
++    exports com.sun.beans;
++    exports com.sun.beans.introspect;
++    exports com.sun.beans.util;
+ 
+     // qualified exports may be inserted at build time
+     // see make/GensrcModuleInfo.gmk
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0037-Skip-verifier-only-in-AllowEnhancedClassRedefinition.patch

@@ -0,0 +1,29 @@
+From 9a662b1367860920095efe79116ef9a2d53fc2c6 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Sun, 17 May 2020 12:19:18 +0200
+Subject: [PATCH 37/50] Skip verifier only in AllowEnhancedClassRedefinition
+
+---
+ src/hotspot/share/oops/instanceKlass.cpp | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/hotspot/share/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
+index c04bdf5abfc..e14aaee21c4 100644
+--- a/src/hotspot/share/oops/instanceKlass.cpp
++++ b/src/hotspot/share/oops/instanceKlass.cpp
+@@ -788,10 +788,10 @@ bool InstanceKlass::link_class_impl(bool throw_verifyerror, TRAPS) {
+ 
+     if (!is_linked()) {
+       if (!is_rewritten()) {
+-        // In cases, if class A is being redefined and class B->A (B is extended from A) and B is host class of anonymous class C
++        // (DCEVM): If class A is being redefined and class B->A (B is extended from A) and B is host class of anonymous class C
+         // then second redefinition fails with cannot cast klass exception. So we currently turn off bytecode verification
+         // on redefinition.
+-        if (!newest_version()->is_redefining()) {
++        if (!AllowEnhancedClassRedefinition || !newest_version()->is_redefining()) {
+           bool verify_ok = verify_code(throw_verifyerror, THREAD);
+           if (!verify_ok) {
+             return false;
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0038-Use-original-code-for-adjust_method_entries-in-stand.patch

@@ -0,0 +1,98 @@
+From a58ed678218bfb80af164cfe98cdf4a3ab74a682 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Sun, 17 May 2020 18:18:52 +0200
+Subject: [PATCH 38/50] Use original code for adjust_method_entries in standard
+ redefinition
+
+---
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    |  2 +-
+ .../share/prims/resolvedMethodTable.cpp       | 46 ++++++++++++++++++-
+ .../share/prims/resolvedMethodTable.hpp       |  1 +
+ 3 files changed, 47 insertions(+), 2 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 660bf3a2e97..0ca675e8ee6 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -506,7 +506,7 @@ void VM_EnhancedRedefineClasses::doit() {
+   // JSR-292 support
+   if (_any_class_has_resolved_methods) {
+     bool trace_name_printed = false;
+-    ResolvedMethodTable::adjust_method_entries(&trace_name_printed);
++    ResolvedMethodTable::adjust_method_entries_dcevm(&trace_name_printed);
+   }
+ 
+   ChangePointersOopClosure<StoreNoBarrier> oopClosureNoBarrier;
+diff --git a/src/hotspot/share/prims/resolvedMethodTable.cpp b/src/hotspot/share/prims/resolvedMethodTable.cpp
+index a9057893368..af2ec48c2e1 100644
+--- a/src/hotspot/share/prims/resolvedMethodTable.cpp
++++ b/src/hotspot/share/prims/resolvedMethodTable.cpp
+@@ -197,8 +197,52 @@ void ResolvedMethodTable::print() {
+ #endif // PRODUCT
+ 
+ #if INCLUDE_JVMTI
+-// It is called at safepoint only for RedefineClasses
++
+ void ResolvedMethodTable::adjust_method_entries(bool * trace_name_printed) {
++  assert(SafepointSynchronize::is_at_safepoint(), "only called at safepoint");
++  // For each entry in RMT, change to new method
++  for (int i = 0; i < _the_table->table_size(); ++i) {
++    for (ResolvedMethodEntry* entry = _the_table->bucket(i);
++         entry != NULL;
++         entry = entry->next()) {
++
++      oop mem_name = entry->object_no_keepalive();
++      // except ones removed
++      if (mem_name == NULL) {
++        continue;
++      }
++      Method* old_method = (Method*)java_lang_invoke_ResolvedMethodName::vmtarget(mem_name);
++
++      if (old_method->is_old()) {
++
++        Method* new_method;
++        if (old_method->is_deleted()) {
++          new_method = Universe::throw_no_such_method_error();
++        } else {
++          InstanceKlass* holder = old_method->method_holder();
++          new_method = holder->method_with_idnum(old_method->orig_method_idnum());
++          assert(holder == new_method->method_holder(), "call after swapping redefined guts");
++          assert(new_method != NULL, "method_with_idnum() should not be NULL");
++          assert(old_method != new_method, "sanity check");
++        }
++
++        java_lang_invoke_ResolvedMethodName::set_vmtarget(mem_name, new_method);
++
++        ResourceMark rm;
++        if (!(*trace_name_printed)) {
++          log_info(redefine, class, update)("adjust: name=%s", old_method->method_holder()->external_name());
++           *trace_name_printed = true;
++        }
++        log_debug(redefine, class, update, constantpool)
++          ("ResolvedMethod method update: %s(%s)",
++           new_method->name()->as_C_string(), new_method->signature()->as_C_string());
++      }
++    }
++  }
++}
++
++// (DCEVM) It is called at safepoint only for RedefineClasses
++void ResolvedMethodTable::adjust_method_entries_dcevm(bool * trace_name_printed) {
+   assert(SafepointSynchronize::is_at_safepoint(), "only called at safepoint");
+   // For each entry in RMT, change to new method
+   GrowableArray<oop>* oops_to_add = new GrowableArray<oop>();
+diff --git a/src/hotspot/share/prims/resolvedMethodTable.hpp b/src/hotspot/share/prims/resolvedMethodTable.hpp
+index 841ae4ae585..543d4ffa485 100644
+--- a/src/hotspot/share/prims/resolvedMethodTable.hpp
++++ b/src/hotspot/share/prims/resolvedMethodTable.hpp
+@@ -93,6 +93,7 @@ public:
+ #if INCLUDE_JVMTI
+   // It is called at safepoint only for RedefineClasses
+   static void adjust_method_entries(bool * trace_name_printed);
++  static void adjust_method_entries_dcevm(bool * trace_name_printed);
+ #endif // INCLUDE_JVMTI
+ 
+   // Cleanup cleared entries
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0039-Revert-code-for-AllowEnhancedClassRedefinition.patch

@@ -0,0 +1,54 @@
+From c1e814f2f7d4f2b37abd667d0bec516474f2a119 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Tue, 19 May 2020 09:41:36 +0200
+Subject: [PATCH 39/50] Revert code for !AllowEnhancedClassRedefinition
+
+---
+ .../share/classfile/classLoaderData.cpp       | 23 ++++++++++---------
+ 1 file changed, 12 insertions(+), 11 deletions(-)
+
+diff --git a/src/hotspot/share/classfile/classLoaderData.cpp b/src/hotspot/share/classfile/classLoaderData.cpp
+index 25103fff2c0..f5b877b432b 100644
+--- a/src/hotspot/share/classfile/classLoaderData.cpp
++++ b/src/hotspot/share/classfile/classLoaderData.cpp
+@@ -1387,12 +1387,13 @@ bool ClassLoaderDataGraph::do_unloading(bool clean_previous_versions) {
+   // Klassesoto delete.
+ 
+   // FIXME: dcevm - block asserts in MetadataOnStackMark
+-  /*
+-  bool walk_all_metadata = clean_previous_versions &&
+-                           JvmtiExport::has_redefined_a_class() &&
+-                           InstanceKlass::has_previous_versions_and_reset();
+-  MetadataOnStackMark md_on_stack(walk_all_metadata);
+-  */
++  bool walk_all_metadata = false;
++  if (!AllowEnhancedClassRedefinition) {
++    walk_all_metadata = clean_previous_versions &&
++                             JvmtiExport::has_redefined_a_class() &&
++                             InstanceKlass::has_previous_versions_and_reset();
++    MetadataOnStackMark md_on_stack(walk_all_metadata);
++  }
+ 
+   // Save previous _unloading pointer for CMS which may add to unloading list before
+   // purging and we don't want to rewalk the previously unloaded class loader data.
+@@ -1402,12 +1403,12 @@ bool ClassLoaderDataGraph::do_unloading(bool clean_previous_versions) {
+   while (data != NULL) {
+     if (data->is_alive()) {
+       // clean metaspace
+-      /*
+-      if (walk_all_metadata) {
+-        data->classes_do(InstanceKlass::purge_previous_versions);
++      if (!AllowEnhancedClassRedefinition) {
++        if (walk_all_metadata) {
++          data->classes_do(InstanceKlass::purge_previous_versions);
++        }
++        data->free_deallocate_list();
+       }
+-      data->free_deallocate_list();
+-      */
+       prev = data;
+       data = data->next();
+       loaders_processed++;
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0040-Code-cleanup.patch

@@ -0,0 +1,278 @@
+From 5b36c4798869c5cd4d65f7765a8447b9cf09d76b Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Tue, 19 May 2020 09:29:39 +0200
+Subject: [PATCH 40/50] Code cleanup
+
+---
+ src/hotspot/share/classfile/classFileParser.cpp   |  4 +++-
+ src/hotspot/share/classfile/classFileParser.hpp   |  2 +-
+ src/hotspot/share/classfile/classLoaderData.cpp   |  2 ++
+ src/hotspot/share/classfile/dictionary.cpp        |  4 ++++
+ src/hotspot/share/classfile/dictionary.hpp        |  1 +
+ src/hotspot/share/classfile/loaderConstraints.cpp |  3 ++-
+ src/hotspot/share/classfile/systemDictionary.cpp  |  8 +++++---
+ src/hotspot/share/interpreter/linkResolver.cpp    |  1 +
+ src/hotspot/share/memory/universe.cpp             |  4 ++--
+ src/hotspot/share/oops/instanceKlass.cpp          | 13 ++++++++-----
+ 10 files changed, 29 insertions(+), 13 deletions(-)
+
+diff --git a/src/hotspot/share/classfile/classFileParser.cpp b/src/hotspot/share/classfile/classFileParser.cpp
+index ea150df9104..c2cd35da4e6 100644
+--- a/src/hotspot/share/classfile/classFileParser.cpp
++++ b/src/hotspot/share/classfile/classFileParser.cpp
+@@ -954,6 +954,7 @@ void ClassFileParser::parse_interfaces(const ClassFileStream* const stream,
+                                                   CHECK);
+       }
+ 
++      // (DCEVM) pick newest
+       interf = (Klass *) maybe_newest(interf);
+ 
+       if (!interf->is_interface()) {
+@@ -3749,6 +3750,7 @@ const InstanceKlass* ClassFileParser::parse_super_class(ConstantPool* const cp,
+     // However, make sure it is not an array type.
+     bool is_array = false;
+     if (cp->tag_at(super_class_index).is_klass()) {
++      // (DCEVM) pick newest
+       super_klass = InstanceKlass::cast(maybe_newest(cp->resolved_klass_at(super_class_index)));
+       if (need_verify)
+         is_array = super_klass->is_array_klass();
+@@ -4417,7 +4419,7 @@ void ClassFileParser::set_precomputed_flags(InstanceKlass* ik) {
+   if (!_has_empty_finalizer) {
+     if (_has_finalizer ||
+         (super != NULL && super->has_finalizer())) {
+-        // FIXME - condition from previous DCEVM version, however after reload new finelize() method is not active
++        // FIXME - (DCEVM) this is condition from previous DCEVM version, however after reload a new finalize() method is not active
+         if (ik->old_version() == NULL || ik->old_version()->has_finalizer()) {
+           ik->set_has_finalizer();
+         }
+diff --git a/src/hotspot/share/classfile/classFileParser.hpp b/src/hotspot/share/classfile/classFileParser.hpp
+index 3db14b678f3..93ed54d8f70 100644
+--- a/src/hotspot/share/classfile/classFileParser.hpp
++++ b/src/hotspot/share/classfile/classFileParser.hpp
+@@ -499,7 +499,7 @@ class ClassFileParser {
+                      FieldLayoutInfo* info,
+                      TRAPS);
+ 
+-  // Enhanced class redefinition
++  // (DCEVM) Enhanced class redefinition
+   inline const Klass* maybe_newest(const Klass* klass) const { return klass != NULL && _pick_newest ? klass->newest_version() : klass; }
+ 
+  public:
+diff --git a/src/hotspot/share/classfile/classLoaderData.cpp b/src/hotspot/share/classfile/classLoaderData.cpp
+index f5b877b432b..ab2615da0ed 100644
+--- a/src/hotspot/share/classfile/classLoaderData.cpp
++++ b/src/hotspot/share/classfile/classLoaderData.cpp
+@@ -1242,6 +1242,7 @@ void ClassLoaderDataGraph::dictionary_classes_do(void f(InstanceKlass*)) {
+   }
+ }
+ 
++// (DCEVM) - iterate over dict classes
+ void ClassLoaderDataGraph::dictionary_classes_do(KlassClosure* klass_closure) {
+   FOR_ALL_DICTIONARY(cld) {
+     cld->dictionary()->classes_do(klass_closure);
+@@ -1257,6 +1258,7 @@ void ClassLoaderDataGraph::dictionary_classes_do(void f(InstanceKlass*, TRAPS),
+   }
+ }
+ 
++// (DCEVM) rollback redefined classes
+ void ClassLoaderDataGraph::rollback_redefinition() {
+   FOR_ALL_DICTIONARY(cld) {
+     cld->dictionary()->rollback_redefinition();
+diff --git a/src/hotspot/share/classfile/dictionary.cpp b/src/hotspot/share/classfile/dictionary.cpp
+index 118730f1b83..dda5188c370 100644
+--- a/src/hotspot/share/classfile/dictionary.cpp
++++ b/src/hotspot/share/classfile/dictionary.cpp
+@@ -245,6 +245,8 @@ void Dictionary::classes_do(void f(InstanceKlass*)) {
+   }
+ }
+ 
++
++// (DCEVM) iterate over dict entry
+ void Dictionary::classes_do(KlassClosure* closure) {
+   for (int index = 0; index < table_size(); index++) {
+     for (DictionaryEntry* probe = bucket(index);
+@@ -342,6 +344,7 @@ DictionaryEntry* Dictionary::get_entry(int index, unsigned int hash,
+   return NULL;
+ }
+ 
++// (DCEVM) replace old_class by new class in dictionary
+ bool Dictionary::update_klass(unsigned int hash, Symbol* name, ClassLoaderData* loader_data, InstanceKlass* k, InstanceKlass* old_klass) {
+   // There are several entries for the same class in the dictionary: One extra entry for each parent classloader of the classloader of the class.
+   bool found = false;
+@@ -356,6 +359,7 @@ bool Dictionary::update_klass(unsigned int hash, Symbol* name, ClassLoaderData*
+   return found;
+ }
+ 
++// (DCEVM) rollback redefinition
+ void Dictionary::rollback_redefinition() {
+   for (int index = 0; index < table_size(); index++) {
+     for (DictionaryEntry* entry = bucket(index);
+diff --git a/src/hotspot/share/classfile/dictionary.hpp b/src/hotspot/share/classfile/dictionary.hpp
+index fd4b134d7a7..5eaa741d500 100644
+--- a/src/hotspot/share/classfile/dictionary.hpp
++++ b/src/hotspot/share/classfile/dictionary.hpp
+@@ -119,6 +119,7 @@ public:
+ 
+   void rollback_redefinition();
+ 
++  // (DCEVM) return old class if redefining in AllowEnhancedClassRedefinition, otherwise return "k"
+   static InstanceKlass* old_if_redefined(InstanceKlass* k) {
+     return (k != NULL && k->is_redefining()) ? ((InstanceKlass* )k->old_version()) : k;
+   }
+diff --git a/src/hotspot/share/classfile/loaderConstraints.cpp b/src/hotspot/share/classfile/loaderConstraints.cpp
+index e4a23e8a27c..bca73b5e0dc 100644
+--- a/src/hotspot/share/classfile/loaderConstraints.cpp
++++ b/src/hotspot/share/classfile/loaderConstraints.cpp
+@@ -4,7 +4,7 @@
+  *
+  * This code is free software; you can redistribute it and/or modify it
+  * under the terms of the GNU General Public License version 2 only, as
+- * published by the Free Software Foundation.
++ * published by the Free Software Foundation) replace old_class by new class in dictionary.
+  *
+  * This code is distributed in the hope that it will be useful, but WITHOUT
+  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+@@ -87,6 +87,7 @@ LoaderConstraintEntry** LoaderConstraintTable::find_loader_constraint(
+   return pp;
+ }
+ 
++// (DCEVM) update constraint entries to new classes, called from dcevm redefinition code only
+ void LoaderConstraintTable::update_after_redefinition() {
+   for (int index = 0; index < table_size(); index++) {
+     LoaderConstraintEntry** p = bucket_addr(index);
+diff --git a/src/hotspot/share/classfile/systemDictionary.cpp b/src/hotspot/share/classfile/systemDictionary.cpp
+index 9dbd6cc9c12..e70865109dd 100644
+--- a/src/hotspot/share/classfile/systemDictionary.cpp
++++ b/src/hotspot/share/classfile/systemDictionary.cpp
+@@ -876,7 +876,8 @@ Klass* SystemDictionary::resolve_instance_class_or_null(Symbol* name,
+     ClassLoaderData* loader_data = k->class_loader_data();
+     MutexLocker mu(SystemDictionary_lock, THREAD);
+     Klass* kk = find_class(name, loader_data);
+-    // FIXME: (kk == k() && !k->is_redefining()) || (k->is_redefining() && kk == k->old_version())
++    // FIXME: (DCEVM)
++    // assert(kk == k() && !k->is_redefining()) || (k->is_redefining() && kk == k->old_version())
+     assert(kk == k, "should be present in dictionary");
+   }
+ #endif
+@@ -1083,7 +1084,7 @@ InstanceKlass* SystemDictionary::resolve_from_stream(Symbol* class_name,
+  InstanceKlass* k = NULL;
+ 
+ #if INCLUDE_CDS
+-  // FIXME: what to do during redefinition?
++  // FIXME: (DCEVM) what to do during redefinition?
+   if (!DumpSharedSpaces) {
+     k = SystemDictionaryShared::lookup_from_stream(class_name,
+                                                    class_loader,
+@@ -1836,7 +1837,7 @@ void SystemDictionary::add_to_hierarchy(InstanceKlass* k, TRAPS) {
+   CodeCache::flush_dependents_on(k);
+ }
+ 
+-// Enhanced class redefinition
++// (DCEVM) - remove from klass hierarchy
+ void SystemDictionary::remove_from_hierarchy(InstanceKlass* k) {
+     assert(k != NULL, "just checking");
+ 
+@@ -1844,6 +1845,7 @@ void SystemDictionary::remove_from_hierarchy(InstanceKlass* k) {
+   k->remove_from_sibling_list();
+ }
+ 
++// (DCEVM) 
+ void SystemDictionary::update_constraints_after_redefinition() {
+   constraints()->update_after_redefinition();
+ }
+diff --git a/src/hotspot/share/interpreter/linkResolver.cpp b/src/hotspot/share/interpreter/linkResolver.cpp
+index cb76d2ef50c..9dc184d02f5 100644
+--- a/src/hotspot/share/interpreter/linkResolver.cpp
++++ b/src/hotspot/share/interpreter/linkResolver.cpp
+@@ -1384,6 +1384,7 @@ void LinkResolver::runtime_resolve_virtual_method(CallInfo& result,
+       assert(resolved_method->can_be_statically_bound(), "cannot override this method");
+       selected_method = resolved_method;
+     } else {
++      // TODO: (DCEVM) explain
+       assert(recv_klass->is_subtype_of(resolved_method->method_holder()), "receiver and resolved method holder are inconsistent");
+       selected_method = methodHandle(THREAD, recv_klass->method_at_vtable(vtable_index));
+     }
+diff --git a/src/hotspot/share/memory/universe.cpp b/src/hotspot/share/memory/universe.cpp
+index 7ecb950b231..d0a6d665aa0 100644
+--- a/src/hotspot/share/memory/universe.cpp
++++ b/src/hotspot/share/memory/universe.cpp
+@@ -176,7 +176,7 @@ void Universe::basic_type_classes_do(void f(Klass*)) {
+   f(doubleArrayKlassObj());
+ }
+ 
+-// FIXME: This method should iterate all pointers that are not within heap objects.
++// FIXME: (DCEVM) This method should iterate all pointers that are not within heap objects.
+ void Universe::root_oops_do(OopClosure *oopClosure) {
+ 
+   class AlwaysTrueClosure: public BoolObjectClosure {
+@@ -203,7 +203,7 @@ void Universe::root_oops_do(OopClosure *oopClosure) {
+   CodeBlobToOopClosure blobClosure(oopClosure, CodeBlobToOopClosure::FixRelocations);
+   CodeCache::blobs_do(&blobClosure);
+   StringTable::oops_do(oopClosure);
+-  
++
+   // (DCEVM) TODO: Check if this is correct?
+   //CodeCache::scavenge_root_nmethods_oops_do(oopClosure);
+   //Management::oops_do(oopClosure);
+diff --git a/src/hotspot/share/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
+index e14aaee21c4..c860371d2fc 100644
+--- a/src/hotspot/share/oops/instanceKlass.cpp
++++ b/src/hotspot/share/oops/instanceKlass.cpp
+@@ -1139,6 +1139,7 @@ void InstanceKlass::init_implementor() {
+   }
+ }
+ 
++// (DCEVM) - init_implementor() for dcevm
+ void InstanceKlass::init_implementor_from_redefine() {
+   assert(is_interface(), "not interface");
+   Klass** addr = adr_implementor();
+@@ -1209,6 +1210,8 @@ bool InstanceKlass::implements_interface(Klass* k) const {
+   return false;
+ }
+ 
++
++// (DCEVM)
+ bool InstanceKlass::implements_interface_any_version(Klass* k) const {
+   k = k->newest_version();
+   if (this->newest_version() == k) return true;
+@@ -1491,10 +1494,8 @@ void InstanceKlass::methods_do(void f(Method* method)) {
+   }
+ }
+ 
+-/**
+-  Update information contains mapping of fields from old class to the new class.
+-  Info is stored on HEAP, you need to call clear_update_information to free the space.
+-*/
++//  (DCEVM) Update information contains mapping of fields from old class to the new class.
++//  Info is stored on HEAP, you need to call clear_update_information to free the space.
+ void InstanceKlass::store_update_information(GrowableArray<int> &values) {
+   int *arr = NEW_C_HEAP_ARRAY(int, values.length(), mtClass);
+   for (int i = 0; i < values.length(); i++) {
+@@ -2162,6 +2163,7 @@ void InstanceKlass::add_dependent_nmethod(nmethod* nm) {
+   dependencies().add_dependent_nmethod(nm);
+ }
+ 
++// DCEVM - update jmethod ids
+ bool InstanceKlass::update_jmethod_id(Method* method, jmethodID newMethodID) {
+   size_t idnum = (size_t)method->method_idnum();
+   jmethodID* jmeths = methods_jmethod_ids_acquire();
+@@ -2177,7 +2179,7 @@ bool InstanceKlass::update_jmethod_id(Method* method, jmethodID newMethodID) {
+ 
+ void InstanceKlass::remove_dependent_nmethod(nmethod* nm, bool delete_immediately) {
+   dependencies().remove_dependent_nmethod(nm, delete_immediately);
+-  // (DCEVM) Hack as dependencies get wrong version of Klass*
++  // FIXME: (DCEVM) Hack as dependencies get wrong version of Klass*
+ //  if (this->old_version() != NULL) {
+ //    InstanceKlass::cast(this->old_version())->remove_dependent_nmethod(nm, true);
+ //    return;
+@@ -3594,6 +3596,7 @@ void InstanceKlass::verify_on(outputStream* st) {
+     }
+ 
+     guarantee(sib->is_klass(), "should be klass");
++    // TODO: (DCEVM) explain
+     guarantee(sib->super() == super || super->newest_version() == SystemDictionary::Object_klass(), "siblings should have same superklass");
+   }
+ 
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0041-Activate-cpCache-definition-asserts-for-dcevm.patch

@@ -0,0 +1,36 @@
+From 71f35c41b569f72a1674ccd57118c4fe76ba3d68 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Tue, 19 May 2020 10:31:15 +0200
+Subject: [PATCH 41/50] Activate cpCache definition asserts for !dcevm
+
+---
+ src/hotspot/share/oops/cpCache.cpp | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+diff --git a/src/hotspot/share/oops/cpCache.cpp b/src/hotspot/share/oops/cpCache.cpp
+index 47040d51f0c..4318df227d1 100644
+--- a/src/hotspot/share/oops/cpCache.cpp
++++ b/src/hotspot/share/oops/cpCache.cpp
+@@ -436,8 +436,7 @@ void ConstantPoolCacheEntry::set_method_handle_common(const constantPoolHandle&
+   if (has_appendix) {
+     const int appendix_index = f2_as_index() + _indy_resolved_references_appendix_offset;
+     assert(appendix_index >= 0 && appendix_index < resolved_references->length(), "oob");
+-    // FIXME (DCEVM) relaxing for now...
+-    //assert(resolved_references->obj_at(appendix_index) == NULL, "init just once");
++    assert(AllowEnhancedClassRedefinition || resolved_references->obj_at(appendix_index) == NULL, "init just once");
+     resolved_references->obj_at_put(appendix_index, appendix());
+   }
+ 
+@@ -445,8 +444,7 @@ void ConstantPoolCacheEntry::set_method_handle_common(const constantPoolHandle&
+   if (has_method_type) {
+     const int method_type_index = f2_as_index() + _indy_resolved_references_method_type_offset;
+     assert(method_type_index >= 0 && method_type_index < resolved_references->length(), "oob");
+-    // FIXME (DCEVM) relaxing for now...
+-    //assert(resolved_references->obj_at(method_type_index) == NULL, "init just once");
++    assert(AllowEnhancedClassRedefinition || resolved_references->obj_at(method_type_index) == NULL, "init just once");
+     resolved_references->obj_at_put(method_type_index, method_type());
+   }
+ 
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0042-iterate-old-method-version-only-in-dcevm.patch

@@ -0,0 +1,29 @@
+From 961018a29ddb7eba96aca7fbc385f3c4f29e3a03 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Tue, 19 May 2020 10:54:38 +0200
+Subject: [PATCH 42/50] iterate old method version only in dcevm
+
+---
+ src/hotspot/share/prims/jvmtiImpl.cpp | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiImpl.cpp b/src/hotspot/share/prims/jvmtiImpl.cpp
+index 2a92ece916e..d2044541d38 100644
+--- a/src/hotspot/share/prims/jvmtiImpl.cpp
++++ b/src/hotspot/share/prims/jvmtiImpl.cpp
+@@ -294,8 +294,10 @@ void JvmtiBreakpoint::each_method_version_do(method_action meth_act) {
+   Symbol* m_signature = _method->signature();
+ 
+   // (DCEVM) Go through old versions of method
+-  for (Method* m = _method->old_version(); m != NULL; m = m->old_version()) {
+-    (m->*meth_act)(_bci);
++  if (AllowEnhancedClassRedefinition) {
++    for (Method* m = _method->old_version(); m != NULL; m = m->old_version()) {
++      (m->*meth_act)(_bci);
++    }
+   }
+ 
+   // search previous versions if they exist
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0043-Support-for-Lambda-class-redefinition.patch

@@ -1,7 +1,7 @@
-From 62f3578e0a73913c1262a1612a464d19abfeb626 Mon Sep 17 00:00:00 2001
+From 2ab70b495c43c4699ad402a714710566400de99d Mon Sep 17 00:00:00 2001
 From: Vladimir Dvorak <lada.dvorak7@gmail.com>
-Date: Sun, 4 Oct 2020 21:12:12 +0200
-Subject: [PATCH 06/18] Support for Lambda class redefinition
+Date: Fri, 22 May 2020 21:23:01 +0200
+Subject: [PATCH 43/50] Support for Lambda class redefinition
 
 ---
  .../share/classfile/classLoaderData.cpp       |  9 +++
@@ -47,7 +47,7 @@ index 7e357929971..00a84610b43 100644
  
    void unload();
 diff --git a/src/hotspot/share/classfile/systemDictionary.cpp b/src/hotspot/share/classfile/systemDictionary.cpp
-index 19bc8d9899a..a6a03d3c0e9 100644
+index e70865109dd..cc9f1fa7831 100644
 --- a/src/hotspot/share/classfile/systemDictionary.cpp
 +++ b/src/hotspot/share/classfile/systemDictionary.cpp
 @@ -971,12 +971,16 @@ InstanceKlass* SystemDictionary::parse_stream(Symbol* class_name,
@@ -81,7 +81,7 @@ index 19bc8d9899a..a6a03d3c0e9 100644
  
    if (host_klass != NULL && k != NULL) {
      // Anonymous classes must update ClassLoaderData holder (was host_klass loader)
-@@ -1844,7 +1852,7 @@ void SystemDictionary::remove_from_hierarchy(InstanceKlass* k) {
+@@ -1845,7 +1853,7 @@ void SystemDictionary::remove_from_hierarchy(InstanceKlass* k) {
    k->remove_from_sibling_list();
  }
  
@@ -91,10 +91,10 @@ index 19bc8d9899a..a6a03d3c0e9 100644
    constraints()->update_after_redefinition();
  }
 diff --git a/src/hotspot/share/classfile/systemDictionary.hpp b/src/hotspot/share/classfile/systemDictionary.hpp
-index 06f6c869d63..1dbbffa197f 100644
+index 717f34ce9a0..dc111846c12 100644
 --- a/src/hotspot/share/classfile/systemDictionary.hpp
 +++ b/src/hotspot/share/classfile/systemDictionary.hpp
-@@ -304,6 +304,7 @@ public:
+@@ -301,6 +301,7 @@ public:
                          protection_domain,
                          st,
                          NULL, // host klass
@@ -102,7 +102,7 @@ index 06f6c869d63..1dbbffa197f 100644
                          NULL, // cp_patches
                          THREAD);
    }
-@@ -312,6 +313,7 @@ public:
+@@ -309,6 +310,7 @@ public:
                                       Handle protection_domain,
                                       ClassFileStream* st,
                                       const InstanceKlass* host_klass,
@@ -111,10 +111,10 @@ index 06f6c869d63..1dbbffa197f 100644
                                       TRAPS);
  
 diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-index 14af1aad21b..0b239b2ff6d 100644
+index 0ca675e8ee6..08fe42d5c28 100644
 --- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
 +++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-@@ -488,6 +488,8 @@ void VM_EnhancedRedefineClasses::doit() {
+@@ -503,6 +503,8 @@ void VM_EnhancedRedefineClasses::doit() {
      ClassLoaderDataGraph::classes_do(&clear_cpool_cache);
  
  
@@ -123,7 +123,7 @@ index 14af1aad21b..0b239b2ff6d 100644
    // JSR-292 support
    if (_any_class_has_resolved_methods) {
      bool trace_name_printed = false;
-@@ -750,12 +752,34 @@ jvmtiError VM_EnhancedRedefineClasses::load_new_class_versions(TRAPS) {
+@@ -774,12 +776,34 @@ jvmtiError VM_EnhancedRedefineClasses::load_new_class_versions(TRAPS) {
      // load hook event.
      state->set_class_being_redefined(the_class, _class_load_kind);
  
@@ -164,7 +164,7 @@ index 14af1aad21b..0b239b2ff6d 100644
      // Clear class_being_redefined just to be sure.
      state->clear_class_being_redefined();
  
-@@ -1436,6 +1460,30 @@ void VM_EnhancedRedefineClasses::MethodDataCleaner::do_klass(Klass* k) {
+@@ -1469,6 +1493,30 @@ void VM_EnhancedRedefineClasses::MethodDataCleaner::do_klass(Klass* k) {
    }
  }
  
@@ -195,7 +195,7 @@ index 14af1aad21b..0b239b2ff6d 100644
  void VM_EnhancedRedefineClasses::update_jmethod_ids() {
    for (int j = 0; j < _matching_methods_length; ++j) {
      Method* old_method = _matching_old_methods[j];
-@@ -1973,7 +2021,10 @@ jvmtiError VM_EnhancedRedefineClasses::find_sorted_affected_classes(TRAPS) {
+@@ -2018,7 +2066,10 @@ jvmtiError VM_EnhancedRedefineClasses::find_sorted_affected_classes(TRAPS) {
    // Find classes not directly redefined, but affected by a redefinition (because one of its supertypes is redefined)
    AffectedKlassClosure closure(_affected_klasses);
    // Updated in j10, from original SystemDictionary::classes_do
@@ -208,10 +208,10 @@ index 14af1aad21b..0b239b2ff6d 100644
  
    // Sort the affected klasses such that a supertype is always on a smaller array index than its subtype.
 diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
-index a48e07e3a6a..3551b06ecde 100644
+index ed44f0e27ce..7e2afd49650 100644
 --- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
 +++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
-@@ -116,6 +116,7 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+@@ -119,6 +119,7 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
    void rollback();
    static void mark_as_scavengable(nmethod* nm);
    static void unpatch_bytecode(Method* method);
@@ -242,10 +242,10 @@ index af2ec48c2e1..7741328979f 100644
          assert(newer_method != NULL, "method_with_idnum() should not be NULL");
          assert(old_method != newer_method, "sanity check");
 diff --git a/src/hotspot/share/prims/unsafe.cpp b/src/hotspot/share/prims/unsafe.cpp
-index c071f8b7cc6..e484b8991d1 100644
+index 2f14e01ce0d..d0e0367d8eb 100644
 --- a/src/hotspot/share/prims/unsafe.cpp
 +++ b/src/hotspot/share/prims/unsafe.cpp
-@@ -820,6 +820,7 @@ Unsafe_DefineAnonymousClass_impl(JNIEnv *env,
+@@ -818,6 +818,7 @@ Unsafe_DefineAnonymousClass_impl(JNIEnv *env,
                                                  host_domain,
                                                  &st,
                                                  InstanceKlass::cast(host_klass),
@@ -254,5 +254,5 @@ index c071f8b7cc6..e484b8991d1 100644
                                                  CHECK_NULL);
    if (anonk == NULL) {
 -- 
-2.23.0
+2.24.3 (Apple Git-128)
 

jb/project/tools/patches/dcevm/0044-Skip-GC-runs-for-redefinitions-without-instance-size.patch

@@ -0,0 +1,34 @@
+From 3f53bb48682b17cfbf4781d4fa47055be88baea0 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Fri, 22 May 2020 21:43:22 +0200
+Subject: [PATCH 44/50] Skip GC runs for redefinitions without instance size
+ change
+
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 08fe42d5c28..a785a43d352 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -578,14 +578,14 @@ void VM_EnhancedRedefineClasses::doit() {
+     }
+   }
+ 
+-//  if (objectClosure.needs_instance_update()) {
++  if (objectClosure.needs_instance_update()) {
+     // Do a full garbage collection to update the instance sizes accordingly
+     Universe::set_redefining_gc_run(true);
+     notify_gc_begin(true);
+     Universe::heap()->collect_as_vm_thread(GCCause::_heap_inspection);
+     notify_gc_end();
+     Universe::set_redefining_gc_run(false);
+-//  }
++  }
+ 
+   // Unmark Klass*s as "redefining"
+   for (int i = 0; i < _new_classes->length(); i++) {
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0045-Fix-no-original-bytecode-found-error-if-method-with-.patch

@@ -1,11 +1,11 @@
-From 4b445e7a7f77f82f757c12010e3c88b2eb4698f9 Mon Sep 17 00:00:00 2001
+From d0d6602fe3d664cb2322d7066bf46fa7e20d5d4e Mon Sep 17 00:00:00 2001
 From: Vladimir Dvorak <lada.dvorak7@gmail.com>
 Date: Sat, 23 May 2020 10:02:15 +0200
-Subject: [PATCH 07/18] Fix "no original bytecode found" error if method with
+Subject: [PATCH 45/50] Fix "no original bytecode found" error if method with
  bkp is missing
 
 Sometimes IDE can deploy class with erroneous method, such method has
-n bytecode, but breakpoint position can still exist.
+no bytecode, but breakpoint position can still exist.
 ---
  src/hotspot/share/interpreter/bytecodes.cpp    |  2 +-
  .../share/interpreter/interpreterRuntime.cpp   |  2 +-
@@ -28,10 +28,10 @@ index e377e36b88c..262ecc021b2 100644
  
  int Bytecodes::special_length_at(Bytecodes::Code code, address bcp, address end) {
 diff --git a/src/hotspot/share/interpreter/interpreterRuntime.cpp b/src/hotspot/share/interpreter/interpreterRuntime.cpp
-index c25e13d83e8..2a66419908c 100644
+index f367e658879..71bbd15a4f5 100644
 --- a/src/hotspot/share/interpreter/interpreterRuntime.cpp
 +++ b/src/hotspot/share/interpreter/interpreterRuntime.cpp
-@@ -819,7 +819,7 @@ IRT_END
+@@ -834,7 +834,7 @@ IRT_END
  // Invokes
  
  IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, Method* method, address bcp))
@@ -41,10 +41,10 @@ index c25e13d83e8..2a66419908c 100644
  
  IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code))
 diff --git a/src/hotspot/share/oops/method.cpp b/src/hotspot/share/oops/method.cpp
-index ed6f769bf1b..031f255e632 100644
+index bee69f9cec6..f1e22db70d6 100644
 --- a/src/hotspot/share/oops/method.cpp
 +++ b/src/hotspot/share/oops/method.cpp
-@@ -1744,14 +1744,14 @@ bool CompressedLineNumberReadStream::read_pair() {
+@@ -1747,14 +1747,14 @@ bool CompressedLineNumberReadStream::read_pair() {
  
  #if INCLUDE_JVMTI
  
@@ -61,7 +61,7 @@ index ed6f769bf1b..031f255e632 100644
      ResourceMark rm;
      fatal("no original bytecode found in %s at bci %d", name_and_sig_as_C_string(), bci);
    }
-@@ -1897,7 +1897,7 @@ BreakpointInfo::BreakpointInfo(Method* m, int bci) {
+@@ -1900,7 +1900,7 @@ BreakpointInfo::BreakpointInfo(Method* m, int bci) {
    _signature_index = m->signature_index();
    _orig_bytecode = (Bytecodes::Code) *m->bcp_from(_bci);
    if (_orig_bytecode == Bytecodes::_breakpoint)
@@ -70,7 +70,7 @@ index ed6f769bf1b..031f255e632 100644
    _next = NULL;
  }
  
-@@ -1906,7 +1906,7 @@ void BreakpointInfo::set(Method* method) {
+@@ -1909,7 +1909,7 @@ void BreakpointInfo::set(Method* method) {
    {
      Bytecodes::Code code = (Bytecodes::Code) *method->bcp_from(_bci);
      if (code == Bytecodes::_breakpoint)
@@ -102,10 +102,10 @@ index 4533476ff8f..193e1845b23 100644
    void set_breakpoint(int bci);
    void clear_breakpoint(int bci);
 diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-index 0b239b2ff6d..aba99bb60fa 100644
+index a785a43d352..2321483dcbd 100644
 --- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
 +++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-@@ -1356,14 +1356,16 @@ void VM_EnhancedRedefineClasses::unpatch_bytecode(Method* method) {
+@@ -1389,14 +1389,16 @@ void VM_EnhancedRedefineClasses::unpatch_bytecode(Method* method) {
  
      if (code == Bytecodes::_breakpoint) {
        int bci = method->bci_from(bcp);
@@ -131,5 +131,5 @@ index 0b239b2ff6d..aba99bb60fa 100644
      } else {
        java_code = Bytecodes::java_code(code);
 -- 
-2.23.0
+2.24.3 (Apple Git-128)
 

jb/project/tools/patches/dcevm/0046-Fix-comments-according-hotspot-formatting-convention.patch

@@ -0,0 +1,421 @@
+From 585f1cb56766be837a34114b1ee5c743aa4e6801 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Sat, 23 May 2020 10:17:56 +0200
+Subject: [PATCH 46/50] Fix comments according hotspot formatting conventions
+
+---
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 191 +++++++-----------
+ .../prims/jvmtiEnhancedRedefineClasses.hpp    |  41 ++--
+ 2 files changed, 90 insertions(+), 142 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 2321483dcbd..8d00203fd9a 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -67,21 +67,19 @@ int         VM_EnhancedRedefineClasses::_deleted_methods_length  = 0;
+ int         VM_EnhancedRedefineClasses::_added_methods_length    = 0;
+ Klass*      VM_EnhancedRedefineClasses::_the_class_oop = NULL;
+ 
+-/**
+- * Create new instance of enhanced class redefiner.
+- *
+- * This class implements VM_GC_Operation - the usual usage should be:
+- *     VM_EnhancedRedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine);
+- *     VMThread::execute(&op);
+- * Which
+- *
+- * @param class_count size of class_defs
+- * @param class_defs class definition - either new class or redefined class
+- *               note that this is not the final array of classes to be redefined
+- *               we need to scan for all affected classes (e.g. subclasses) and
+- *               caculcate redefinition for them as well.
+- * @param class_load_kind always jvmti_class_load_kind_redefine
+- */
++//
++// Create new instance of enhanced class redefiner.
++//
++// This class implements VM_GC_Operation - the usual usage should be:
++//     VM_EnhancedRedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine);
++//     VMThread::execute(&op);
++// Which
++//  - class_count size of class_defs
++//  - class_defs class definition - either new class or redefined class
++//               note that this is not the final array of classes to be redefined
++//               we need to scan for all affected classes (e.g. subclasses) and
++//               caculcate redefinition for them as well.
++// @param class_load_kind always jvmti_class_load_kind_redefine
+ VM_EnhancedRedefineClasses::VM_EnhancedRedefineClasses(jint class_count, const jvmtiClassDefinition *class_defs, JvmtiClassLoadKind class_load_kind) :
+         VM_GC_Operation(Universe::heap()->total_collections(), GCCause::_heap_inspection, Universe::heap()->total_full_collections(), true) {
+   _affected_klasses = NULL;
+@@ -97,12 +95,10 @@ static inline InstanceKlass* get_ik(jclass def) {
+   return InstanceKlass::cast(java_lang_Class::as_Klass(mirror));
+ }
+ 
+-/**
+- * Start the redefinition:
+- * - Load new class definitions - @see load_new_class_versions
+- * - Start mark&sweep GC.
+- * @return true if success, otherwise all chnages are rollbacked.
+- */
++// Start the redefinition:
++// - Load new class definitions - @see load_new_class_versions
++// - Start mark&sweep GC.
++// - true if success, otherwise all chnages are rollbacked.
+ bool VM_EnhancedRedefineClasses::doit_prologue() {
+ 
+   if (_class_count == 0) {
+@@ -175,9 +171,7 @@ bool VM_EnhancedRedefineClasses::doit_prologue() {
+   return true;
+ }
+ 
+-/**
+- * Closer for static fields - copy value from old class to the new class.
+- */
++// Closer for static fields - copy value from old class to the new class.
+ class FieldCopier : public FieldClosure {
+   public:
+   void do_field(fieldDescriptor* fd) {
+@@ -236,9 +230,7 @@ struct StoreNoBarrier {
+   template <class T> static void oop_store(T* p) { RawAccess<>::oop_store(p, oop(NULL)); }
+ };
+ 
+-/**
+-  Closure to scan all heap objects and update method handles
+-*/
++// Closure to scan all heap objects and update method handles
+ template <class S>
+ class ChangePointersOopClosure : public BasicOopIterateClosure {
+   // import java_lang_invoke_MemberName.*
+@@ -247,7 +239,6 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+     REFERENCE_KIND_MASK  = java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK,
+   };
+ 
+-
+   bool update_member_name(oop obj) {
+     int flags    =       java_lang_invoke_MemberName::flags(obj);
+     int ref_kind =       (flags >> REFERENCE_KIND_SHIFT) & REFERENCE_KIND_MASK;
+@@ -382,14 +373,12 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+   }
+ };
+ 
+-/**
+- * Closure to scan all objects on heap for objects of changed classes
+- *   - if the fields are compatible, only update class definition reference
+- *   - otherwise if the new object size is smaller then old size, reshufle
+- *          the fields and fill the gap with "dead_space"
+- *   - otherwise set the _needs_instance_update flag, we need to do full GC
+- *          and reshuffle object positions durring mark&sweep
+- */
++// Closure to scan all objects on heap for objects of changed classes
++//  - if the fields are compatible, only update class definition reference
++//  - otherwise if the new object size is smaller then old size, reshufle
++//         the fields and fill the gap with "dead_space"
++//  - otherwise set the _needs_instance_update flag, we need to do full GC
++//         and reshuffle object positions durring mark&sweep
+ class ChangePointersObjectClosure : public ObjectClosure {
+   private:
+ 
+@@ -451,19 +440,16 @@ public:
+ };
+ 
+ 
+-/**
+-  Main transformation method - runs in VM thread.
+-
+-  - UseSharedSpaces - TODO what does it mean?
+-  - for each sratch class call redefine_single_class
+-  - clear code cache (flush_dependent_code)
+-  - iterate the heap and update object defintions, check it old/new class fields
+-       are compatible. If new class size is smaller then old, it can be solved directly here.
+-  - iterate the heap and update method handles to new version
+-  - Swap marks to have same hashcodes
+-  - copy static fields
+-  - notify JVM of the modification
+-*/
++// Main transformation method - runs in VM thread.
++//  - UseSharedSpaces - TODO what does it mean?
++//  - for each sratch class call redefine_single_class
++//  - clear code cache (flush_dependent_code)
++//  - iterate the heap and update object defintions, check it old/new class fields
++//       are compatible. If new class size is smaller then old, it can be solved directly here.
++//  - iterate the heap and update method handles to new version
++//  - Swap marks to have same hashcodes
++//  - copy static fields
++//  - notify JVM of the modification
+ void VM_EnhancedRedefineClasses::doit() {
+   Thread *thread = Thread::current();
+ 
+@@ -634,11 +620,9 @@ void VM_EnhancedRedefineClasses::doit() {
+ 
+ }
+ 
+-/**
+- * Cleanup - runs in JVM thread
+- *  - free used memory
+- *  - end GC
+- */
++// Cleanup - runs in JVM thread
++//  - free used memory
++//  - end GC
+ void VM_EnhancedRedefineClasses::doit_epilogue() {
+   VM_GC_Operation::doit_epilogue();
+ 
+@@ -670,11 +654,9 @@ void VM_EnhancedRedefineClasses::doit_epilogue() {
+   }
+ }
+ 
+-/**
+- * Exclude java primitives and arrays from redefinition
+- * @param klass_mirror  pointer to the klass
+- * @return true if is modifiable
+- */
++// Exclude java primitives and arrays from redefinition
++//  - klass_mirror  pointer to the klass
++//  - true if is modifiable
+ bool VM_EnhancedRedefineClasses::is_modifiable_class(oop klass_mirror) {
+   // classes for primitives cannot be redefined
+   if (java_lang_Class::is_primitive(klass_mirror)) {
+@@ -693,17 +675,12 @@ bool VM_EnhancedRedefineClasses::is_modifiable_class(oop klass_mirror) {
+   return true;
+ }
+ 
+-/**
+-  Load and link new classes (either redefined or affected by redefinition - subclass, ...)
+-
+-  - find sorted affected classes
+-  - resolve new class
+-  - calculate redefine flags (field change, method change, supertype change, ...)
+-  - calculate modified fields and mapping to old fields
+-  - link new classes
+-
+-  The result is sotred in _affected_klasses(old definitions) and _new_classes(new definitions) arrays.
+-*/
++// Load and link new classes (either redefined or affected by redefinition - subclass, ...)
++//  - find sorted affected classes
++//  - resolve new class
++//  - calculate redefine flags (field change, method change, supertype change, ...)
++//  - calculate modified fields and mapping to old fields
++//  - link new classes
+ jvmtiError VM_EnhancedRedefineClasses::load_new_class_versions(TRAPS) {
+ 
+   _affected_klasses = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<Klass*>(_class_count, true);
+@@ -898,9 +875,7 @@ jvmtiError VM_EnhancedRedefineClasses::load_new_class_versions(TRAPS) {
+   return JVMTI_ERROR_NONE;
+ }
+ 
+-/**
+-  Calculated the difference between new and old class  (field change, method change, supertype change, ...).
+-*/
++ // Calculated the difference between new and old class  (field change, method change, supertype change, ...).
+ int VM_EnhancedRedefineClasses::calculate_redefinition_flags(InstanceKlass* new_class) {
+   int result = Klass::NoRedefinition;
+   log_info(redefine, class, load)("Comparing different class versions of class %s",new_class->name()->as_C_string());
+@@ -1183,14 +1158,11 @@ int VM_EnhancedRedefineClasses::calculate_redefinition_flags(InstanceKlass* new_
+ }
+ 
+ 
+-/**
+-  Searches for the class bytecode of the given class and returns it as a byte array.
+-
+-  @param the_class definition of a class, either existing class or new_class
+-  @param class_bytes - if the class is redefined, it contains new class definition, otherwise just original class bytecode.
+-  @param class_byte_count - size of class_bytes
+-  @param not_changed - new_class not available or same as current class
+-*/
++// Searches for the class bytecode of the given class and returns it as a byte array.
++//  - the_class definition of a class, either existing class or new_class
++//  - class_bytes - if the class is redefined, it contains new class definition, otherwise just original class bytecode.
++//  - class_byte_count - size of class_bytes
++//  - not_changed - new_class not available or same as current class
+ jvmtiError VM_EnhancedRedefineClasses::find_class_bytes(InstanceKlass* the_class, const unsigned char **class_bytes, jint *class_byte_count, jboolean *not_changed) {
+ 
+   *not_changed = false;
+@@ -1233,11 +1205,9 @@ jvmtiError VM_EnhancedRedefineClasses::find_class_bytes(InstanceKlass* the_class
+   return JVMTI_ERROR_NONE;
+ }
+ 
+-/**
+-  Calculate difference between non static fields of old and new class and store the info into new class:
+-     instanceKlass->store_update_information
+-     instanceKlass->copy_backwards
+-*/
++// Calculate difference between non static fields of old and new class and store the info into new class:
++//     instanceKlass->store_update_information
++//     instanceKlass->copy_backwards
+ void VM_EnhancedRedefineClasses::calculate_instance_update_information(Klass* new_version) {
+ 
+   class CalculateFieldUpdates : public FieldClosure {
+@@ -1348,9 +1318,7 @@ void VM_EnhancedRedefineClasses::calculate_instance_update_information(Klass* ne
+   }
+ }
+ 
+-/**
+-  Rollback all changes - clear new classes from the system dictionary, return old classes to directory, free memory.
+-*/
++// Rollback all changes - clear new classes from the system dictionary, return old classes to directory, free memory.
+ void VM_EnhancedRedefineClasses::rollback() {
+   log_info(redefine, class, load)("Rolling back redefinition, result=%d", _res);
+   ClassLoaderDataGraph::rollback_redefinition();
+@@ -1547,9 +1515,7 @@ void VM_EnhancedRedefineClasses::update_jmethod_ids() {
+   }
+ }
+ 
+-/**
+-  Set method as obsolete / old / deleted.
+-*/
++// Set method as obsolete / old / deleted.
+ void VM_EnhancedRedefineClasses::check_methods_and_mark_as_obsolete() {
+   for (int j = 0; j < _matching_methods_length; ++j/*, ++old_index*/) {
+     Method* old_method = _matching_old_methods[j];
+@@ -1771,12 +1737,9 @@ void VM_EnhancedRedefineClasses::flush_dependent_code(InstanceKlass* k_h, TRAPS)
+   }
+ }
+ 
+-/**
+-  Compare _old_methods and _new_methods arrays and store the result into
+-	_matching_old_methods, _matching_new_methods, _added_methods, _deleted_methods
+-
+-  Setup _old_methods and _new_methods before the call - it should be called for one class only!
+-*/
++//  Compare _old_methods and _new_methods arrays and store the result into
++//  _matching_old_methods, _matching_new_methods, _added_methods, _deleted_methods
++//  Setup _old_methods and _new_methods before the call - it should be called for one class only!
+ void VM_EnhancedRedefineClasses::compute_added_deleted_matching_methods() {
+   Method* old_method;
+   Method* new_method;
+@@ -1900,7 +1863,6 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+   }
+   */
+ 
+-
+   {
+     ResourceMark rm(THREAD);
+     // increment the classRedefinedCount field in the_class and in any
+@@ -1940,9 +1902,7 @@ void VM_EnhancedRedefineClasses::check_class(InstanceKlass* ik, TRAPS) {
+   }
+ }
+ 
+-/**
+- * Logging of all methods (old, new, changed, ...)
+- */
++// Logging of all methods (old, new, changed, ...)
+ void VM_EnhancedRedefineClasses::dump_methods() {
+   int j;
+   log_trace(redefine, class, dump)("_old_methods --");
+@@ -2002,9 +1962,7 @@ void VM_EnhancedRedefineClasses::dump_methods() {
+   }
+ }
+ 
+-/**
+-  Helper class to traverse all loaded classes and figure out if the class is affected by redefinition.
+-*/
++// Helper class to traverse all loaded classes and figure out if the class is affected by redefinition.
+ class AffectedKlassClosure : public KlassClosure {
+  private:
+    GrowableArray<Klass*>* _affected_klasses;
+@@ -2052,10 +2010,8 @@ class AffectedKlassClosure : public KlassClosure {
+   }
+ };
+ 
+-/**
+-  Find all affected classes by current redefinition (either because of redefine, class hierarchy or interface change).
+-  Affected classes are stored in _affected_klasses and parent classes always precedes child class.
+-*/
++// Find all affected classes by current redefinition (either because of redefine, class hierarchy or interface change).
++// Affected classes are stored in _affected_klasses and parent classes always precedes child class.
+ jvmtiError VM_EnhancedRedefineClasses::find_sorted_affected_classes(TRAPS) {
+   for (int i = 0; i < _class_count; i++) {
+     InstanceKlass* klass_handle = get_ik(_class_defs[i].klass);
+@@ -2086,9 +2042,7 @@ jvmtiError VM_EnhancedRedefineClasses::find_sorted_affected_classes(TRAPS) {
+   return JVMTI_ERROR_NONE;
+ }
+ 
+-/**
+-  Pairs of class dependencies (for topological sort)
+-*/
++// Pairs of class dependencies (for topological sort)
+ struct KlassPair {
+   const Klass* _left;
+   const Klass* _right;
+@@ -2101,14 +2055,11 @@ static bool match_second(void* value, KlassPair elem) {
+   return elem._right == value;
+ }
+ 
+-/**
+- For each class to be redefined parse the bytecode and figure out the superclass and all interfaces.
+- First newly introduced classes (_class_defs) are scanned and then affected classed (_affected_klasses).
+- Affected flag is cleared (clear_redefinition_flag(Klass::MarkedAsAffected))
+- For each dependency create a KlassPair instance. Finnaly, affected classes (_affected_klasses) are sorted according to pairs.
+-
+- TODO - the class file is potentionally parsed multiple times - introduce a cache?
+-*/
++// For each class to be redefined parse the bytecode and figure out the superclass and all interfaces.
++// First newly introduced classes (_class_defs) are scanned and then affected classed (_affected_klasses).
++// Affected flag is cleared (clear_redefinition_flag(Klass::MarkedAsAffected))
++// For each dependency create a KlassPair instance. Finnaly, affected classes (_affected_klasses) are sorted according to pairs.
++// TODO - the class file is potentionally parsed multiple times - introduce a cache?
+ jvmtiError VM_EnhancedRedefineClasses::do_topological_class_sorting(TRAPS) {
+   ResourceMark mark(THREAD);
+ 
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+index 7e2afd49650..d8a11b51fe9 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+@@ -35,17 +35,16 @@
+ #include "gc/shared/vmGCOperations.hpp"
+ #include "../../../java.base/unix/native/include/jni_md.h"
+ 
+-/**
+- * Enhanced class redefiner.
+- *
+- * This class implements VM_GC_Operation - the usual usage should be:
+- *     VM_EnhancedRedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine);
+- *     VMThread::execute(&op);
+- * Which in turn runs:
+- *   - doit_prologue() - calculate all affected classes (add subclasses etc) and load new class versions
+- *   - doit() - main redefition, adjust existing objects on the heap, clear caches
+- *   - doit_epilogue() - cleanup
+-*/
++//
++// Enhanced class redefiner.
++//
++// This class implements VM_GC_Operation - the usual usage should be:
++//     VM_EnhancedRedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine);
++//     VMThread::execute(&op);
++// Which in turn runs:
++//   - doit_prologue() - calculate all affected classes (add subclasses etc) and load new class versions
++//   - doit() - main redefition, adjust existing objects on the heap, clear caches
++//   - doit_epilogue() - cleanup
+ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+  private:
+   // These static fields are needed by ClassLoaderDataGraph::classes_do()
+@@ -93,17 +92,15 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+ 
+   // These routines are roughly in call order unless otherwise noted.
+ 
+-  /**
+-    Load and link new classes (either redefined or affected by redefinition - subclass, ...)
+-
+-    - find sorted affected classes
+-    - resolve new class
+-    - calculate redefine flags (field change, method change, supertype change, ...)
+-    - calculate modified fields and mapping to old fields
+-    - link new classes
+-
+-    The result is sotred in _affected_klasses(old definitions) and _new_classes(new definitions) arrays.
+-  */
++  // Load and link new classes (either redefined or affected by redefinition - subclass, ...)
++  //
++  // - find sorted affected classes
++  // - resolve new class
++  // - calculate redefine flags (field change, method change, supertype change, ...)
++  // - calculate modified fields and mapping to old fields
++  // - link new classes
++  //
++  // The result is sotred in _affected_klasses(old definitions) and _new_classes(new definitions) arrays.
+   jvmtiError load_new_class_versions(TRAPS);
+ 
+   // Searches for all affected classes and performs a sorting such tha
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0047-Review-threads-cleanup.patch

@@ -0,0 +1,47 @@
+From 79c80c48da4d52f4616f1c6ef37e838d29be9be1 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Sun, 24 May 2020 12:07:09 +0200
+Subject: [PATCH 47/50] Review threads, cleanup
+
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp | 9 ++++-----
+ 1 file changed, 4 insertions(+), 5 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 8d00203fd9a..1fbba406087 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -253,7 +253,7 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+           // Note: we might set NULL at this point, which should force AbstractMethodError at runtime
+           Thread *thread = Thread::current();
+           CallInfo info(new_method, newest, thread);
+-          Handle objHandle(thread, obj);  // TODO : review thread
++          Handle objHandle(thread, obj);
+           MethodHandles::init_method_MemberName(objHandle, info);
+         } else {
+           java_lang_invoke_MemberName::set_method(obj, NULL);
+@@ -280,7 +280,7 @@ class ChangePointersOopClosure : public BasicOopIterateClosure {
+           InstanceKlass* ik_new = InstanceKlass::cast(k->newest_version());
+           fieldDescriptor fd_new;
+           if (ik_new->find_local_field(fd.name(), fd.signature(), &fd_new)) {
+-            Handle objHandle(Thread::current(), obj);  // TODO : review thread
++            Handle objHandle(Thread::current(), obj);
+             MethodHandles::init_field_MemberName(objHandle, fd_new, MethodHandles::ref_kind_is_setter(ref_kind));
+           } else {
+             // Matching field is not found in new version, not much we can do here.
+@@ -441,10 +441,9 @@ public:
+ 
+ 
+ // Main transformation method - runs in VM thread.
+-//  - UseSharedSpaces - TODO what does it mean?
+-//  - for each sratch class call redefine_single_class
++//  - for each scratch class call redefine_single_class
+ //  - clear code cache (flush_dependent_code)
+-//  - iterate the heap and update object defintions, check it old/new class fields
++//  - iterate the heap and update object definitions, check it old/new class fields
+ //       are compatible. If new class size is smaller then old, it can be solved directly here.
+ //  - iterate the heap and update method handles to new version
+ //  - Swap marks to have same hashcodes
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/patches/dcevm/0048-Replace-deleted-method-with-Universe-throw_no_such_m.patch

@@ -1,7 +1,7 @@
-From c022124c6e0680d2dfc174f66fc858b0eb2591dc Mon Sep 17 00:00:00 2001
+From 8b79e673a3a9d12c97b8b7dd2f4d79c2d4cdd1d6 Mon Sep 17 00:00:00 2001
 From: Vladimir Dvorak <lada.dvorak7@gmail.com>
 Date: Sun, 24 May 2020 12:07:42 +0200
-Subject: [PATCH 08/18] Replace deleted method with
+Subject: [PATCH 48/50] Replace deleted method with
  Universe::throw_no_such_method_error
 
 ---
@@ -53,5 +53,5 @@ index 7741328979f..06581643c3b 100644
  
          java_lang_invoke_ResolvedMethodName::set_vmtarget(mem_name, newer_method);
 -- 
-2.23.0
+2.24.3 (Apple Git-128)
 

jb/project/tools/patches/dcevm/0049-Support-for-G1-gc.patch

@@ -1,11 +1,10 @@
-From aa1d291c7349e5cecf9d93e817d0866460deb903 Mon Sep 17 00:00:00 2001
+From caf7fe94c42bea9606f96023cebe466058a1eef5 Mon Sep 17 00:00:00 2001
 From: Vladimir Dvorak <lada.dvorak7@gmail.com>
 Date: Fri, 12 Jun 2020 17:43:52 +0200
-Subject: [PATCH 09/18] Support for G1 gc
+Subject: [PATCH 49/50] Support for G1 gc
 
 ---
- src/hotspot/share/gc/g1/g1CollectedHeap.cpp   |  20 +++
- src/hotspot/share/gc/g1/g1CollectedHeap.hpp   |   3 +
+ src/hotspot/share/gc/g1/g1CollectedHeap.hpp   |   1 +
  src/hotspot/share/gc/g1/g1FullCollector.cpp   |  16 +-
  .../share/gc/g1/g1FullGCCompactTask.cpp       |  92 +++++++++-
  .../share/gc/g1/g1FullGCCompactTask.hpp       |  19 +++
@@ -22,54 +21,16 @@ Subject: [PATCH 09/18] Support for G1 gc
  src/hotspot/share/gc/shared/gcConfig.cpp      |   2 +-
  src/hotspot/share/gc/shared/space.inline.hpp  |   3 +-
  src/hotspot/share/memory/universe.cpp         |   5 +
- .../prims/jvmtiEnhancedRedefineClasses.cpp    |  75 ++++++---
- .../prims/jvmtiEnhancedRedefineClasses.hpp    |   6 +-
- src/hotspot/share/runtime/arguments.cpp       |   4 +-
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    |  31 +++-
+ .../prims/jvmtiEnhancedRedefineClasses.hpp    |   1 +
+ src/hotspot/share/runtime/arguments.cpp       |   2 +-
  src/hotspot/share/utilities/growableArray.hpp |   4 +
- 22 files changed, 628 insertions(+), 141 deletions(-)
+ 21 files changed, 570 insertions(+), 126 deletions(-)
  create mode 100644 src/hotspot/share/gc/shared/dcevmSharedGC.cpp
  create mode 100644 src/hotspot/share/gc/shared/dcevmSharedGC.hpp
 
-diff --git a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
-index dea8d9fdb0e..33664a30519 100644
---- a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
-+++ b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
-@@ -2108,6 +2108,21 @@ public:
-   }
- };
- 
-+class G1IterateObjectClosureTask : public AbstractGangTask {
-+ private:
-+  ObjectClosure* _cl;
-+  G1CollectedHeap* _g1h;
-+  HeapRegionClaimer _hrclaimer;
-+ public:
-+  G1IterateObjectClosureTask(ObjectClosure* cl, G1CollectedHeap* g1h) : AbstractGangTask("IterateObject Closure"),
-+    _cl(cl), _g1h(g1h),  _hrclaimer(g1h->workers()->active_workers()) { }
-+
-+  virtual void work(uint worker_id) {
-+    IterateObjectClosureRegionClosure blk(_cl);
-+    _g1h->heap_region_par_iterate_from_worker_offset(&blk, &_hrclaimer, worker_id);
-+  }
-+};
-+
- void G1CollectedHeap::object_iterate(ObjectClosure* cl) {
-   IterateObjectClosureRegionClosure blk(cl);
-   heap_region_iterate(&blk);
-@@ -2117,6 +2132,11 @@ void G1CollectedHeap::heap_region_iterate(HeapRegionClosure* cl) const {
-   _hrm.iterate(cl);
- }
- 
-+void G1CollectedHeap::object_par_iterate(ObjectClosure* cl) {
-+  G1IterateObjectClosureTask iocl_task(cl, this);
-+  workers()->run_task(&iocl_task);
-+}
-+
- void G1CollectedHeap::heap_region_par_iterate_from_worker_offset(HeapRegionClosure* cl,
-                                                                  HeapRegionClaimer *hrclaimer,
-                                                                  uint worker_id) const {
 diff --git a/src/hotspot/share/gc/g1/g1CollectedHeap.hpp b/src/hotspot/share/gc/g1/g1CollectedHeap.hpp
-index 8a171dc6b52..05a068bb2e0 100644
+index 8a171dc6b52..0735eef0da8 100644
 --- a/src/hotspot/share/gc/g1/g1CollectedHeap.hpp
 +++ b/src/hotspot/share/gc/g1/g1CollectedHeap.hpp
 @@ -144,6 +144,7 @@ class G1CollectedHeap : public CollectedHeap {
@@ -80,15 +41,6 @@ index 8a171dc6b52..05a068bb2e0 100644
  
    // Other related classes.
    friend class HeapRegionClaimer;
-@@ -1116,6 +1117,8 @@ public:
- 
-   // Iteration functions.
- 
-+  void object_par_iterate(ObjectClosure* cl);
-+
-   // Iterate over all objects, calling "cl.do_object" on each.
-   virtual void object_iterate(ObjectClosure* cl);
- 
 diff --git a/src/hotspot/share/gc/g1/g1FullCollector.cpp b/src/hotspot/share/gc/g1/g1FullCollector.cpp
 index 4362ee87e30..7b9496976b8 100644
 --- a/src/hotspot/share/gc/g1/g1FullCollector.cpp
@@ -124,7 +76,7 @@ index 4362ee87e30..7b9496976b8 100644
  }
  
 diff --git a/src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp b/src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp
-index 0c2fc088fa4..e7d830979f6 100644
+index 660afc88f02..d101a9f2177 100644
 --- a/src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp
 +++ b/src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp
 @@ -30,6 +30,7 @@
@@ -284,7 +236,7 @@ index 6c8eaf5967e..ea52a2db8cc 100644
  
  #endif // SHARE_GC_G1_G1FULLGCCOMPACTTASK_HPP
 diff --git a/src/hotspot/share/gc/g1/g1FullGCCompactionPoint.cpp b/src/hotspot/share/gc/g1/g1FullGCCompactionPoint.cpp
-index 76e9e77d739..44fc32c1c47 100644
+index 3e3440804e4..23c0d615088 100644
 --- a/src/hotspot/share/gc/g1/g1FullGCCompactionPoint.cpp
 +++ b/src/hotspot/share/gc/g1/g1FullGCCompactionPoint.cpp
 @@ -31,13 +31,19 @@
@@ -990,10 +942,10 @@ index 00000000000..e2ef0171fb2
 +
 +#endif
 diff --git a/src/hotspot/share/gc/shared/gcConfig.cpp b/src/hotspot/share/gc/shared/gcConfig.cpp
-index adb0f5dd25c..20e0ef9ee8a 100644
+index 39364a64cb2..945b06ad2a4 100644
 --- a/src/hotspot/share/gc/shared/gcConfig.cpp
 +++ b/src/hotspot/share/gc/shared/gcConfig.cpp
-@@ -106,7 +106,7 @@ void GCConfig::fail_if_unsupported_gc_is_selected() {
+@@ -101,7 +101,7 @@ void GCConfig::fail_if_unsupported_gc_is_selected() {
  }
  
  void GCConfig::select_gc_ergonomically() {
@@ -1040,7 +992,7 @@ index d0a6d665aa0..3dc4cc1323c 100644
    SystemDictionary::oops_do(oopClosure);
  }
 diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
-index aba99bb60fa..8b6fad2128e 100644
+index 1fbba406087..32929b3d7a0 100644
 --- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
 +++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
 @@ -36,7 +36,6 @@
@@ -1051,16 +1003,15 @@ index aba99bb60fa..8b6fad2128e 100644
  #include "oops/fieldStreams.hpp"
  #include "oops/klassVtable.hpp"
  #include "oops/oop.inline.hpp"
-@@ -55,6 +54,8 @@
+@@ -55,6 +54,7 @@
  #include "utilities/events.hpp"
  #include "oops/constantPool.inline.hpp"
  #include "gc/cms/cmsHeap.hpp"
-+#include "gc/g1/g1CollectedHeap.hpp"
 +#include "gc/shared/dcevmSharedGC.hpp"
  
  Array<Method*>* VM_EnhancedRedefineClasses::_old_methods = NULL;
  Array<Method*>* VM_EnhancedRedefineClasses::_new_methods = NULL;
-@@ -78,7 +79,7 @@ Klass*      VM_EnhancedRedefineClasses::_the_class_oop = NULL;
+@@ -78,7 +78,7 @@ Klass*      VM_EnhancedRedefineClasses::_the_class_oop = NULL;
  //  - class_defs class definition - either new class or redefined class
  //               note that this is not the final array of classes to be redefined
  //               we need to scan for all affected classes (e.g. subclasses) and
@@ -1069,7 +1020,7 @@ index aba99bb60fa..8b6fad2128e 100644
  // @param class_load_kind always jvmti_class_load_kind_redefine
  VM_EnhancedRedefineClasses::VM_EnhancedRedefineClasses(jint class_count, const jvmtiClassDefinition *class_defs, JvmtiClassLoadKind class_load_kind) :
          VM_GC_Operation(Universe::heap()->total_collections(), GCCause::_heap_inspection, Universe::heap()->total_full_collections(), true) {
-@@ -216,6 +217,13 @@ void VM_EnhancedRedefineClasses::mark_as_scavengable(nmethod* nm) {
+@@ -216,6 +216,13 @@ void VM_EnhancedRedefineClasses::mark_as_scavengable(nmethod* nm) {
    }
  }
  
@@ -1083,7 +1034,7 @@ index aba99bb60fa..8b6fad2128e 100644
  // TODO comment
  struct StoreBarrier {
    // TODO: j10 review change ::oop_store -> HeapAccess<>::oop_store
-@@ -430,7 +438,7 @@ public:
+@@ -430,7 +437,7 @@ public:
            src->set_klass(obj->klass()->new_version());
            //  FIXME: instance updates...
            //guarantee(false, "instance updates!");
@@ -1092,18 +1043,7 @@ index aba99bb60fa..8b6fad2128e 100644
          }
        } else {
          obj->set_klass(obj->klass()->new_version());
-@@ -452,6 +460,10 @@ public:
- void VM_EnhancedRedefineClasses::doit() {
-   Thread *thread = Thread::current();
- 
-+  if (log_is_enabled(Info, redefine, class, timer)) {
-+    _timer_vm_op_doit.start();
-+  }
-+
- #if INCLUDE_CDS
-   if (UseSharedSpaces) {
-     // Sharing is enabled so we remap the shared readonly space to
-@@ -507,12 +519,31 @@ void VM_EnhancedRedefineClasses::doit() {
+@@ -507,7 +514,12 @@ void VM_EnhancedRedefineClasses::doit() {
      // mark such nmethod's as "scavengable".
      // For now, mark all nmethod's as scavengable that are not scavengable already
      if (ScavengeRootsInCode) {
@@ -1117,85 +1057,24 @@ index aba99bb60fa..8b6fad2128e 100644
      }
  
      Universe::heap()->ensure_parsability(false);
--    Universe::heap()->object_iterate(&objectClosure);
-+    if (UseG1GC) {
-+      if (log_is_enabled(Info, redefine, class, timer)) {
-+        _timer_heap_iterate.start();
-+      }
-+      G1CollectedHeap::heap()->object_par_iterate(&objectClosure);
-+      _timer_heap_iterate.stop();
-+    } else {
-+      if (log_is_enabled(Info, redefine, class, timer)) {
-+        _timer_heap_iterate.start();
-+      }
-+      Universe::heap()->object_iterate(&objectClosure);
-+      _timer_heap_iterate.stop();
-+    }
-+
-     Universe::root_oops_do(&oopClosureNoBarrier);
-+
-   }
-   log_trace(redefine, class, obsolete, metadata)("After updating instances");
- 
-@@ -565,11 +596,19 @@ void VM_EnhancedRedefineClasses::doit() {
- 
-   if (objectClosure.needs_instance_update()) {
+@@ -567,6 +579,7 @@ void VM_EnhancedRedefineClasses::doit() {
      // Do a full garbage collection to update the instance sizes accordingly
-+
-+    if (log_is_enabled(Info, redefine, class, timer)) {
-+      _timer_heap_full_gc.start();
-+    }
-+
      Universe::set_redefining_gc_run(true);
      notify_gc_begin(true);
 +    // TODO: check _metadata_GC_clear_soft_refs with ScavengeRootsInCode
      Universe::heap()->collect_as_vm_thread(GCCause::_heap_inspection);
      notify_gc_end();
      Universe::set_redefining_gc_run(false);
-+
-+    _timer_heap_full_gc.stop();
-   }
+@@ -877,7 +890,7 @@ jvmtiError VM_EnhancedRedefineClasses::load_new_class_versions(TRAPS) {
+  // Calculated the difference between new and old class  (field change, method change, supertype change, ...).
+ int VM_EnhancedRedefineClasses::calculate_redefinition_flags(InstanceKlass* new_class) {
+   int result = Klass::NoRedefinition;
+-  log_info(redefine, class, load)("Comparing different class versions of class %s",new_class->name()->as_C_string());
++  log_debug(redefine, class, load)("Comparing different class versions of class %s",new_class->name()->as_C_string());
  
-   // Unmark Klass*s as "redefining"
-@@ -617,6 +656,7 @@ void VM_EnhancedRedefineClasses::doit() {
-   }
- #endif
- 
-+  _timer_vm_op_doit.stop();
- }
- 
- // Cleanup - runs in JVM thread
-@@ -640,16 +680,14 @@ void VM_EnhancedRedefineClasses::doit_epilogue() {
-   if (log_is_enabled(Info, redefine, class, timer)) {
-     // Used to have separate timers for "doit" and "all", but the timer
-     // overhead skewed the measurements.
--    jlong doit_time = _timer_rsc_phase1.milliseconds() +
--                      _timer_rsc_phase2.milliseconds();
--    jlong all_time = _timer_vm_op_prologue.milliseconds() + doit_time;
-+    jlong all_time = _timer_vm_op_prologue.milliseconds() + _timer_vm_op_doit.milliseconds();
- 
-     log_info(redefine, class, timer)
-       ("vm_op: all=" JLONG_FORMAT "  prologue=" JLONG_FORMAT "  doit=" JLONG_FORMAT,
--       all_time, _timer_vm_op_prologue.milliseconds(), doit_time);
-+       all_time, _timer_vm_op_prologue.milliseconds(), _timer_vm_op_doit.milliseconds());
-     log_info(redefine, class, timer)
--      ("redefine_single_class: phase1=" JLONG_FORMAT "  phase2=" JLONG_FORMAT,
--       _timer_rsc_phase1.milliseconds(), _timer_rsc_phase2.milliseconds());
-+      ("doit: heap iterate=" JLONG_FORMAT "  fullgc=" JLONG_FORMAT,
-+       _timer_heap_iterate.milliseconds(), _timer_heap_full_gc.milliseconds());
-   }
- }
- 
-@@ -1398,7 +1436,7 @@ void VM_EnhancedRedefineClasses::unpatch_bytecode(Method* method) {
- // arrayKlassOops. See Open Issues in jvmtiRedefineClasses.hpp.
- void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
-   if (!k->is_instance_klass()) {
--	return;
-+    return;
-   }
- 
-   HandleMark hm(_thread);
-@@ -1584,7 +1622,7 @@ class TransferNativeFunctionRegistration {
+   assert(new_class->old_version() != NULL, "must have old version");
+   InstanceKlass* the_class = InstanceKlass::cast(new_class->old_version());
+@@ -1584,7 +1597,7 @@ class TransferNativeFunctionRegistration {
  
    // Recursively search the binary tree of possibly prefixed method names.
    // Iteration could be used if all agents were well behaved. Full tree walk is
@@ -1204,7 +1083,7 @@ index aba99bb60fa..8b6fad2128e 100644
    // Branch at each depth in the binary tree is:
    //    (1) without the prefix.
    //    (2) with the prefix.
-@@ -1689,7 +1727,7 @@ void VM_EnhancedRedefineClasses::transfer_old_native_function_registrations(Inst
+@@ -1689,7 +1702,7 @@ void VM_EnhancedRedefineClasses::transfer_old_native_function_registrations(Inst
    transfer.transfer_registrations(_matching_old_methods, _matching_methods_length);
  }
  
@@ -1213,26 +1092,7 @@ index aba99bb60fa..8b6fad2128e 100644
  // Deoptimize all compiled code that depends on this class.
  //
  // If the can_redefine_classes capability is obtained in the onload
-@@ -1816,10 +1854,6 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
- 
-   HandleMark hm(THREAD);   // make sure handles from this call are freed
- 
--  if (log_is_enabled(Info, redefine, class, timer)) {
--    _timer_rsc_phase1.start();
--  }
--
-   InstanceKlass* new_class = new_class_oop;
-   InstanceKlass* the_class = InstanceKlass::cast(new_class_oop->old_version());
-   assert(the_class != NULL, "must have old version");
-@@ -1874,7 +1908,6 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
-                              new_class->external_name(),
-                              java_lang_Class::classRedefinedCount(new_class->java_mirror()));
-   }
--  _timer_rsc_phase2.stop();
- } // end redefine_single_class()
- 
- 
-@@ -2057,8 +2090,8 @@ static bool match_second(void* value, KlassPair elem) {
+@@ -2057,8 +2070,8 @@ static bool match_second(void* value, KlassPair elem) {
  // For each class to be redefined parse the bytecode and figure out the superclass and all interfaces.
  // First newly introduced classes (_class_defs) are scanned and then affected classed (_affected_klasses).
  // Affected flag is cleared (clear_redefinition_flag(Klass::MarkedAsAffected))
@@ -1244,23 +1104,10 @@ index aba99bb60fa..8b6fad2128e 100644
    ResourceMark mark(THREAD);
  
 diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
-index 3551b06ecde..62a0fbf54d4 100644
+index d8a11b51fe9..030852b160a 100644
 --- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
 +++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
-@@ -86,9 +86,10 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
-   // Performance measurement support. These timers do not cover all
-   // the work done for JVM/TI RedefineClasses() but they do cover
-   // the heavy lifting.
--  elapsedTimer  _timer_rsc_phase1;
--  elapsedTimer  _timer_rsc_phase2;
-+  elapsedTimer  _timer_vm_op_doit;
-   elapsedTimer  _timer_vm_op_prologue;
-+  elapsedTimer  _timer_heap_iterate;
-+  elapsedTimer  _timer_heap_full_gc;
- 
-   // These routines are roughly in call order unless otherwise noted.
- 
-@@ -115,6 +116,7 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+@@ -115,6 +115,7 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
  
    void rollback();
    static void mark_as_scavengable(nmethod* nm);
@@ -1269,21 +1116,18 @@ index 3551b06ecde..62a0fbf54d4 100644
    static void fix_invoke_method(Method* method);
  
 diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
-index 2b5ba619f43..5053ad7ee61 100644
+index 72580b384dd..45f0858e57d 100644
 --- a/src/hotspot/share/runtime/arguments.cpp
 +++ b/src/hotspot/share/runtime/arguments.cpp
-@@ -2045,9 +2045,9 @@ bool Arguments::check_gc_consistency() {
+@@ -2047,7 +2047,7 @@ bool Arguments::check_gc_consistency() {
    if (AllowEnhancedClassRedefinition) {
      // Must use serial GC. This limitation applies because the instance size changing GC modifications
      // are only built into the mark and compact algorithm.
 -    if ((!UseSerialGC && !UseConcMarkSweepGC) && i >= 1) {
 +    if ((!UseSerialGC && !UseConcMarkSweepGC && !UseG1GC) && i >= 1) {
        jio_fprintf(defaultStream::error_stream(),
--                  "Must use the serial or concurrent mark sweep GC with enhanced class redefinition.\n");
-+                  "Must use the Serial, Concurrent Mark Sweep or G1 GC with enhanced class redefinition.\n");
+                   "Must use the serial or concurrent mark sweep GC with enhanced class redefinition.\n");
        return false;
-     }
-   }
 diff --git a/src/hotspot/share/utilities/growableArray.hpp b/src/hotspot/share/utilities/growableArray.hpp
 index f37d94a0529..738d475aea6 100644
 --- a/src/hotspot/share/utilities/growableArray.hpp
@@ -1300,5 +1144,5 @@ index f37d94a0529..738d475aea6 100644
  
  // Custom STL-style iterator to iterate over elements of a GrowableArray that satisfy a given predicate
 -- 
-2.23.0
+2.24.3 (Apple Git-128)
 

jb/project/tools/patches/dcevm/0050-G1-Heap-parallel-iterate-method-object_par_iterate-d.patch

@@ -0,0 +1,214 @@
+From 55e30de9a54b2f3bec995a2df42fe14b09d16f06 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <lada.dvorak7@gmail.com>
+Date: Sun, 21 Jun 2020 13:38:45 +0200
+Subject: [PATCH 50/50] G1 Heap parallel iterate method "object_par_iterate" +
+ dcevm timers
+
+G1 Heap does not have parallel iterate method, that is usefull in dcevm
+iterate phase. According performance tests the parallel iteration is up
+~25% faster then serial iteration, ratio depends on the size of heap.
+Dcevm's timers did not make sense. Now, there are timers fo prologue,
+doit, gc itarate and full gc phases. Iterate+fullgc time make up most
+the total doit time.
+---
+ src/hotspot/share/gc/g1/g1CollectedHeap.cpp   | 20 ++++++++
+ src/hotspot/share/gc/g1/g1CollectedHeap.hpp   |  2 +
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 46 +++++++++++++------
+ .../prims/jvmtiEnhancedRedefineClasses.hpp    |  5 +-
+ 4 files changed, 58 insertions(+), 15 deletions(-)
+
+diff --git a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
+index dea8d9fdb0e..33664a30519 100644
+--- a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
++++ b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
+@@ -2108,6 +2108,21 @@ public:
+   }
+ };
+ 
++class G1IterateObjectClosureTask : public AbstractGangTask {
++ private:
++  ObjectClosure* _cl;
++  G1CollectedHeap* _g1h;
++  HeapRegionClaimer _hrclaimer;
++ public:
++  G1IterateObjectClosureTask(ObjectClosure* cl, G1CollectedHeap* g1h) : AbstractGangTask("IterateObject Closure"),
++    _cl(cl), _g1h(g1h),  _hrclaimer(g1h->workers()->active_workers()) { }
++
++  virtual void work(uint worker_id) {
++    IterateObjectClosureRegionClosure blk(_cl);
++    _g1h->heap_region_par_iterate_from_worker_offset(&blk, &_hrclaimer, worker_id);
++  }
++};
++
+ void G1CollectedHeap::object_iterate(ObjectClosure* cl) {
+   IterateObjectClosureRegionClosure blk(cl);
+   heap_region_iterate(&blk);
+@@ -2117,6 +2132,11 @@ void G1CollectedHeap::heap_region_iterate(HeapRegionClosure* cl) const {
+   _hrm.iterate(cl);
+ }
+ 
++void G1CollectedHeap::object_par_iterate(ObjectClosure* cl) {
++  G1IterateObjectClosureTask iocl_task(cl, this);
++  workers()->run_task(&iocl_task);
++}
++
+ void G1CollectedHeap::heap_region_par_iterate_from_worker_offset(HeapRegionClosure* cl,
+                                                                  HeapRegionClaimer *hrclaimer,
+                                                                  uint worker_id) const {
+diff --git a/src/hotspot/share/gc/g1/g1CollectedHeap.hpp b/src/hotspot/share/gc/g1/g1CollectedHeap.hpp
+index 0735eef0da8..05a068bb2e0 100644
+--- a/src/hotspot/share/gc/g1/g1CollectedHeap.hpp
++++ b/src/hotspot/share/gc/g1/g1CollectedHeap.hpp
+@@ -1117,6 +1117,8 @@ public:
+ 
+   // Iteration functions.
+ 
++  void object_par_iterate(ObjectClosure* cl);
++
+   // Iterate over all objects, calling "cl.do_object" on each.
+   virtual void object_iterate(ObjectClosure* cl);
+ 
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 32929b3d7a0..5be9bb74305 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -54,6 +54,7 @@
+ #include "utilities/events.hpp"
+ #include "oops/constantPool.inline.hpp"
+ #include "gc/cms/cmsHeap.hpp"
++#include "gc/g1/g1CollectedHeap.hpp"
+ #include "gc/shared/dcevmSharedGC.hpp"
+ 
+ Array<Method*>* VM_EnhancedRedefineClasses::_old_methods = NULL;
+@@ -459,6 +460,10 @@ public:
+ void VM_EnhancedRedefineClasses::doit() {
+   Thread *thread = Thread::current();
+ 
++  if (log_is_enabled(Info, redefine, class, timer)) {
++    _timer_vm_op_doit.start();
++  }
++
+ #if INCLUDE_CDS
+   if (UseSharedSpaces) {
+     // Sharing is enabled so we remap the shared readonly space to
+@@ -523,8 +528,22 @@ void VM_EnhancedRedefineClasses::doit() {
+     }
+ 
+     Universe::heap()->ensure_parsability(false);
+-    Universe::heap()->object_iterate(&objectClosure);
++    if (UseG1GC) {
++      if (log_is_enabled(Info, redefine, class, timer)) {
++        _timer_heap_iterate.start();
++      }
++      G1CollectedHeap::heap()->object_par_iterate(&objectClosure);
++      _timer_heap_iterate.stop();
++    } else {
++      if (log_is_enabled(Info, redefine, class, timer)) {
++        _timer_heap_iterate.start();
++      }
++      Universe::heap()->object_iterate(&objectClosure);
++      _timer_heap_iterate.stop();
++    }
++
+     Universe::root_oops_do(&oopClosureNoBarrier);
++
+   }
+   log_trace(redefine, class, obsolete, metadata)("After updating instances");
+ 
+@@ -577,12 +596,19 @@ void VM_EnhancedRedefineClasses::doit() {
+ 
+   if (objectClosure.needs_instance_update()) {
+     // Do a full garbage collection to update the instance sizes accordingly
++
++    if (log_is_enabled(Info, redefine, class, timer)) {
++      _timer_heap_full_gc.start();
++    }
++
+     Universe::set_redefining_gc_run(true);
+     notify_gc_begin(true);
+     // TODO: check _metadata_GC_clear_soft_refs with ScavengeRootsInCode
+     Universe::heap()->collect_as_vm_thread(GCCause::_heap_inspection);
+     notify_gc_end();
+     Universe::set_redefining_gc_run(false);
++
++    _timer_heap_full_gc.stop();
+   }
+ 
+   // Unmark Klass*s as "redefining"
+@@ -630,6 +656,7 @@ void VM_EnhancedRedefineClasses::doit() {
+   }
+ #endif
+ 
++  _timer_vm_op_doit.stop();
+ }
+ 
+ // Cleanup - runs in JVM thread
+@@ -653,16 +680,14 @@ void VM_EnhancedRedefineClasses::doit_epilogue() {
+   if (log_is_enabled(Info, redefine, class, timer)) {
+     // Used to have separate timers for "doit" and "all", but the timer
+     // overhead skewed the measurements.
+-    jlong doit_time = _timer_rsc_phase1.milliseconds() +
+-                      _timer_rsc_phase2.milliseconds();
+-    jlong all_time = _timer_vm_op_prologue.milliseconds() + doit_time;
++    jlong all_time = _timer_vm_op_prologue.milliseconds() + _timer_vm_op_doit.milliseconds();
+ 
+     log_info(redefine, class, timer)
+       ("vm_op: all=" JLONG_FORMAT "  prologue=" JLONG_FORMAT "  doit=" JLONG_FORMAT,
+-       all_time, _timer_vm_op_prologue.milliseconds(), doit_time);
++       all_time, _timer_vm_op_prologue.milliseconds(), _timer_vm_op_doit.milliseconds());
+     log_info(redefine, class, timer)
+-      ("redefine_single_class: phase1=" JLONG_FORMAT "  phase2=" JLONG_FORMAT,
+-       _timer_rsc_phase1.milliseconds(), _timer_rsc_phase2.milliseconds());
++      ("doit: heap iterate=" JLONG_FORMAT "  fullgc=" JLONG_FORMAT,
++       _timer_heap_iterate.milliseconds(), _timer_heap_full_gc.milliseconds());
+   }
+ }
+ 
+@@ -1411,7 +1436,7 @@ void VM_EnhancedRedefineClasses::unpatch_bytecode(Method* method) {
+ // arrayKlassOops. See Open Issues in jvmtiRedefineClasses.hpp.
+ void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
+   if (!k->is_instance_klass()) {
+-	return;
++    return;
+   }
+ 
+   HandleMark hm(_thread);
+@@ -1829,10 +1854,6 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+ 
+   HandleMark hm(THREAD);   // make sure handles from this call are freed
+ 
+-  if (log_is_enabled(Info, redefine, class, timer)) {
+-    _timer_rsc_phase1.start();
+-  }
+-
+   InstanceKlass* new_class = new_class_oop;
+   InstanceKlass* the_class = InstanceKlass::cast(new_class_oop->old_version());
+   assert(the_class != NULL, "must have old version");
+@@ -1887,7 +1908,6 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+                              new_class->external_name(),
+                              java_lang_Class::classRedefinedCount(new_class->java_mirror()));
+   }
+-  _timer_rsc_phase2.stop();
+ } // end redefine_single_class()
+ 
+ 
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+index 030852b160a..9755944d70b 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+@@ -86,9 +86,10 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+   // Performance measurement support. These timers do not cover all
+   // the work done for JVM/TI RedefineClasses() but they do cover
+   // the heavy lifting.
+-  elapsedTimer  _timer_rsc_phase1;
+-  elapsedTimer  _timer_rsc_phase2;
++  elapsedTimer  _timer_vm_op_doit;
+   elapsedTimer  _timer_vm_op_prologue;
++  elapsedTimer  _timer_heap_iterate;
++  elapsedTimer  _timer_heap_full_gc;
+ 
+   // These routines are roughly in call order unless otherwise noted.
+ 
+-- 
+2.24.3 (Apple Git-128)
+

jb/project/tools/windows/scripts/mkimages_x64.sh

@@ -6,6 +6,8 @@
 #   build_number     - specifies the number of JetBrainsRuntime build
 #   bundle_type      - specifies bundle to be built; possible values:
 #                        jcef - the release bundles with jcef
+#                        jfx - the release bundles with javafx
+#                        jcef_jfx - the release bundles with jcef and javafx
 #                        dcevm - the release bundles with dcevm patches
 #                        nomod - the release bundles without any additional modules (jcef)
 #                        fd - the fastdebug bundles which also include the jcef module
@@ -41,9 +43,12 @@ function create_jbr {
   JBR_BUNDLE=jbr_${bundle_type}
 
   case "${bundle_type}" in
-  "jcef" | "dcevm" | "nomod" | "fd")
+  "jfx" | "jcef" | "dcevm" | "nomod" | "fd")
     JBR_BASE_NAME=jbr_${bundle_type}-${JBSDK_VERSION}
     ;;
+  "jfx_jcef")
+    JBR_BASE_NAME=jbr-${JBSDK_VERSION}
+    ;;
   *)
     echo "***ERR*** bundle was not specified" && do_exit 1
     ;;
@@ -57,7 +62,7 @@ function create_jbr {
     --add-modules $(xargs < modules_tmp.list | sed s/" "//g) --output ${JBR_BUNDLE} || do_exit $?
   if [[ "${bundle_type}" == *jcef* ]] || [[ "${bundle_type}" == *dcevm* ]] || [[ "${bundle_type}" == fd ]]
   then
-    rsync -av ${JCEF_PATH}/ ${JBR_BUNDLE}/bin --exclude="modular-sdk" || do_exit $?
+    cp -R ${JCEF_PATH}/* ${JBR_BUNDLE}/bin || do_exit $?
   fi
   echo Modifying release info ...
   cat ${JSDK}/release | tr -d '\r' | grep -v 'JAVA_VERSION' | grep -v 'MODULES' >> ${JBR_BUNDLE}/release
@@ -68,10 +73,19 @@ WITH_DEBUG_LEVEL="--with-debug-level=release"
 RELEASE_NAME=windows-x86_64-normal-server-release
 JBSDK=${JBRSDK_BASE_NAME}-windows-x64-b${build_number}
 case "$bundle_type" in
+  "jfx")
+    git apply -p0 < jb/project/tools/patches/add_jfx_module.patch || do_exit $?
+    do_reset_changes=1
+    ;;
   "jcef")
     git apply -p0 < jb/project/tools/patches/add_jcef_module.patch || do_exit $?
     do_reset_changes=1
     ;;
+  "jfx_jcef")
+    git apply -p0 < jb/project/tools/patches/add_jfx_module.patch || do_exit $?
+    git apply -p0 < jb/project/tools/patches/add_jcef_module.patch || do_exit $?
+    do_reset_changes=1
+    ;;
   "dcevm")
     HEAD_REVISION=$(git rev-parse HEAD)
     git am jb/project/tools/patches/dcevm/*.patch || do_exit $?
@@ -100,7 +114,6 @@ sh ./configure \
   $WITH_DEBUG_LEVEL \
   --with-vendor-name="${VENDOR_NAME}" \
   --with-vendor-version-string="${VENDOR_VERSION_STRING}" \
-  --with-jvm-features=shenandoahgc \
   --with-version-pre= \
   --with-version-build=${JDK_BUILD_NUMBER} \
   --with-version-opt=b${build_number} \
@@ -123,7 +136,7 @@ JBRSDK_BUNDLE=jbrsdk
 rm -rf ${BASE_DIR}/${JBRSDK_BUNDLE} && rsync -a --exclude demo --exclude sample ${JSDK}/ ${JBRSDK_BUNDLE} || do_exit $?
 if [[ "${bundle_type}" == *jcef* ]] || [[ "${bundle_type}" == *dcevm* ]] || [[ "${bundle_type}" == fd ]]
 then
-  rsync -av ${JCEF_PATH}/ ${JBRSDK_BUNDLE}/bin --exclude='modular-sdk' || do_exit $?
+  cp -R ${JCEF_PATH}/* ${JBRSDK_BUNDLE}/bin
   sed 's/JBR/JBRSDK/g' ${JSDK}/release > release
   mv release ${JBRSDK_BUNDLE}/release
 fi

jb/project/tools/windows/scripts/mkimages_x86.sh

@@ -6,6 +6,7 @@
 #   build_number     - specifies the number of JetBrainsRuntime build
 #   bundle_type      - specifies bundle to bu built; possible values:
 #                        jcef - the bundles 1) jbr with jcef+javafx, 2) jbrsdk and 3) test will be created
+#                        jfx  - the bundle 1) jbr with javafx only will be created
 #
 # jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
 # jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
@@ -34,7 +35,6 @@ PATH="/usr/local/bin:/usr/bin:${PATH}"
   --with-target-bits=32 \
   --with-vendor-name="${VENDOR_NAME}" \
   --with-vendor-version-string="${VENDOR_VERSION_STRING}" \
-  --with-jvm-features=shenandoahgc \
   --with-version-pre= \
   --with-version-build=${JDK_BUILD_NUMBER} \
   --with-version-opt=b${build_number} \

jb/project/tools/windows/scripts/pack_x64.sh

@@ -6,6 +6,8 @@
 #   build_number     - specifies the number of JetBrainsRuntime build
 #   bundle_type      - specifies bundle to be built; possible values:
 #                        jcef - the release bundles with jcef
+#                        jfx - the release bundles with javafx
+#                        jcef_jfx - the release bundles with jcef and javafx
 #                        dcevm - the release bundles with dcevm patches
 #                        nomod - the release bundles without any additional modules (jcef)
 #                        fd - the fastdebug bundles which also include the jcef module
@@ -36,9 +38,12 @@ function pack_jbr {
   JBR_BUNDLE=jbr_${bundle_type}
 
   case "${bundle_type}" in
-  "jcef" | "dcevm" | "nomod" | "fd")
+  "jfx" | "jcef" | "dcevm" | "nomod" | "fd")
     JBR_BASE_NAME=jbr_${bundle_type}-${JBSDK_VERSION}
     ;;
+  "jfx_jcef")
+    JBR_BASE_NAME=jbr-${JBSDK_VERSION}
+    ;;
   *)
     echo "***ERR*** bundle was not specified" && do_exit 1
     ;;
@@ -46,7 +51,6 @@ function pack_jbr {
 
   JBR=$JBR_BASE_NAME-windows-x64-b$build_number
   echo Creating $JBR.tar.gz ...
-  chmod -R ug+rwx,o+rx ${BASE_DIR}/${JBR_BUNDLE}
   cp -R ${BASE_DIR}/${JBR_BUNDLE} ${BASE_DIR}/jbr
   /usr/bin/tar -czf $JBR.tar.gz -C $BASE_DIR jbr || do_exit $?
 }

jb/project/tools/windows/scripts/pack_x86.sh

@@ -6,6 +6,7 @@
 #   build_number     - specifies the number of JetBrainsRuntime build
 #   bundle_type      - specifies bundle to bu built; possible values:
 #                        jcef - the bundles 1) jbr with jcef+javafx, 2) jbrsdk and 3) test will be created
+#                        jfx  - the bundle 1) jbr with javafx only will be created
 #
 # jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
 # jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz

make/CompileJavaModules.gmk

@@ -321,7 +321,7 @@ jdk.jshell_COPY += .jsh .properties
 
 ################################################################################
 
-jdk.internal.le_COPY += .properties .caps .txt
+jdk.internal.le_COPY += .properties
 
 ################################################################################
 

make/CompileToolsJdk.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -39,6 +39,7 @@ $(eval $(call IncludeCustomExtension, CompileTools.gmk))
 # Use += to be able to add to this from a custom extension
 BUILD_TOOLS_SRC_DIRS += \
     $(TOPDIR)/make/jdk/src/classes \
+    $(BUILDTOOLS_OUTPUTDIR)/interim_cldrconverter_classes \
     $(BUILDTOOLS_OUTPUTDIR)/interim_tzdb_classes \
     #
 
@@ -55,7 +56,6 @@ $(eval $(call SetupJavaCompilation,BUILD_TOOLS_JDK, \
     ADD_JAVAC_FLAGS := \
         --add-exports java.desktop/sun.awt=ALL-UNNAMED \
         --add-exports java.base/sun.text=ALL-UNNAMED \
-        --add-exports java.base/sun.security.util=ALL-UNNAMED \
         , \
 ))
 

make/CopyInterimCLDRConverter.gmk

@@ -1,10 +1,12 @@
 #
-# Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.
+# published by the Free Software Foundation.  Oracle designates this
+# particular file as subject to the "Classpath" exception as provided
+# by Oracle in the LICENSE file that accompanied this code.
 #
 # This code is distributed in the hope that it will be useful, but WITHOUT
 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
@@ -21,29 +23,30 @@
 # questions.
 #
 
-################################################################################
-# Capture file for LookupWithAttrProp.java
-#
-# NOTE: This hexadecimal dump of DNS protocol messages was generated by
-#       running the LookupWithAttrProp application program against a real DNS
-#       server along with DNSTracer
-#
-################################################################################
+default: all
 
-# DNS Request
+include $(SPEC)
+include MakeBase.gmk
 
-0000: A4 14 01 00 00 01 00 00   00 00 00 00 05 68 6F 73  .............hos
-0010: 74 31 07 64 6F 6D 61 69   6E 31 03 63 6F 6D 00 00  t1.domain1.com..
-0020: 01 00 01                                           ...
+##########################################################################################
 
+### CLDRConverter needs the JRE time zone names from the java.base source.
 
-# DNS Response
-
-0000: A4 14 85 80 00 01 00 01   00 01 00 01 05 68 6F 73  .............hos
-0010: 74 31 07 64 6F 6D 61 69   6E 31 03 63 6F 6D 00 00  t1.domain1.com..
-0020: 01 00 01 C0 0C 00 01 00   01 00 01 51 80 00 04 01  ...........Q....
-0030: 02 04 01 C0 12 00 02 00   01 00 00 8C A0 00 05 02  ................
-0040: 6E 73 C0 12 C0 3F 00 01   00 01 00 00 8C A0 00 04  ns...?..........
-0050: 7F 00 00 01                                        ....
+define cldrconverter_copytznames
+	$(MKDIR) -p '$(@D)'
+	$(RM) '$@'
+	$(SED) -e "s/package sun.util.resources/package build.tools.cldrconverter/" \
+        -e "s/extends TimeZoneNamesBundle//" \
+        -e "s/protected final/static final/" \
+        < $(<) > $@
+endef
 
+$(eval $(call SetupCopyFiles,COPY_INTERIM_CLDRCONVERTER, \
+    SRC := $(TOPDIR)/src/java.base/share/classes/sun/util/resources, \
+    DEST := $(BUILDTOOLS_OUTPUTDIR)/interim_cldrconverter_classes/build/tools/cldrconverter, \
+    FILES := TimeZoneNames.java, \
+    MACRO := cldrconverter_copytznames))
+    
+##########################################################################################
 
+all: $(COPY_INTERIM_CLDRCONVERTER)

make/Main.gmk

@@ -1,4 +1,4 @@
-
+#
 # Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
@@ -78,9 +78,13 @@ ifneq ($(CREATING_BUILDJDK), true)
   interim-rmic:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CompileInterimRmic.gmk)
 
-  interim-tzdb:
+  interim-cldrconverter:
+	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CopyInterimCLDRConverter.gmk)
+
+interim-tzdb:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CopyInterimTZDB.gmk)
 
+
   buildtools-jdk:
 	+($(CD) $(TOPDIR)/make && $(MAKE) $(MAKE_ARGS) -f CompileToolsJdk.gmk)
 
@@ -92,7 +96,7 @@ ifneq ($(CREATING_BUILDJDK), true)
 endif
 
 ALL_TARGETS += buildtools-langtools interim-langtools \
-    interim-rmic interim-tzdb buildtools-jdk buildtools-modules \
+    interim-rmic interim-cldrconverter interim-tzdb buildtools-jdk buildtools-modules \
     buildtools-hotspot
 
 ################################################################################
@@ -229,7 +233,7 @@ $(eval $(call DeclareRecipesForPhase, STATIC_LIBS, \
     TARGET_SUFFIX := static-libs, \
     FILE_PREFIX := Lib, \
     MAKE_SUBDIR := lib, \
-    CHECK_MODULES := $(ALL_MODULES), \
+    CHECK_MODULES := $(STATIC_LIBS_MODULES), \
     USE_WRAPPER := true, \
     EXTRA_ARGS := STATIC_LIBS=true, \
 ))
@@ -685,7 +689,7 @@ else
 
   interim-langtools: $(INTERIM_LANGTOOLS_GENSRC_TARGETS)
 
-  buildtools-jdk: interim-langtools interim-tzdb
+  buildtools-jdk: interim-langtools interim-cldrconverter interim-tzdb
 
   buildtools-hotspot: interim-langtools
 
@@ -717,14 +721,10 @@ else
 
   # If not already set, set the JVM variant target so that the JVM will be built.
   JVM_MAIN_LIB_TARGETS ?= hotspot-$(JVM_VARIANT_MAIN)-libs
-  JVM_MAIN_GENSRC_TARGETS ?= hotspot-$(JVM_VARIANT_MAIN)-gensrc
 
   # Building one JVM variant is enough to start building the other libs
   $(LIBS_TARGETS): $(JVM_MAIN_LIB_TARGETS)
 
-  # Static libs depend on hotspot gensrc
-  $(STATIC_LIBS_TARGETS): $(JVM_MAIN_GENSRC_TARGETS)
-
   $(LAUNCHER_TARGETS): java.base-libs
 
   ifeq ($(STATIC_BUILD), true)

make/RunTests.gmk

@@ -658,14 +658,10 @@ define SetupRunJtregTestBody
     $1_JTREG_LAUNCHER_OPTIONS += -Xmx$$($1_JTREG_MAX_MEM)
   endif
 
-  # Make sure the tmp dir is normalized as some tests will react badly otherwise
-  $1_TEST_TMP_DIR := $$(abspath $$($1_TEST_SUPPORT_DIR)/tmp)
-
   $1_JTREG_BASIC_OPTIONS += -$$($1_JTREG_TEST_MODE) \
       -verbose:$$(JTREG_VERBOSE) -retain:$$(JTREG_RETAIN) \
       -concurrency:$$($1_JTREG_JOBS) -timeoutFactor:$$(JTREG_TIMEOUT_FACTOR) \
-      -vmoption:-XX:MaxRAMPercentage=$$($1_JTREG_MAX_RAM_PERCENTAGE) \
-      -vmoption:-Djava.io.tmpdir="$$($1_TEST_TMP_DIR)"
+      -vmoption:-XX:MaxRAMPercentage=$$($1_JTREG_MAX_RAM_PERCENTAGE)
 
   $1_JTREG_BASIC_OPTIONS += -automatic -ignore:quiet
 
@@ -744,8 +740,7 @@ define SetupRunJtregTestBody
   run-test-$1: clean-workdir-$1 $$($1_AOT_TARGETS)
 	$$(call LogWarn)
 	$$(call LogWarn, Running test '$$($1_TEST)')
-	$$(call MakeDir, $$($1_TEST_RESULTS_DIR) $$($1_TEST_SUPPORT_DIR) \
-	    $$($1_TEST_TMP_DIR))
+	$$(call MakeDir, $$($1_TEST_RESULTS_DIR) $$($1_TEST_SUPPORT_DIR))
 	$$(call ExecuteWithLog, $$($1_TEST_SUPPORT_DIR)/jtreg, ( \
 	    $$(JAVA) $$($1_JTREG_LAUNCHER_OPTIONS) \
 	        -Dprogram=jtreg -jar $$(JT_HOME)/lib/jtreg.jar \

make/RunTestsPrebuilt.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -237,8 +237,7 @@ else ifeq ($(OPENJDK_TARGET_OS), solaris)
 else ifeq ($(OPENJDK_TARGET_OS), windows)
   NUM_CORES := $(NUMBER_OF_PROCESSORS)
   MEMORY_SIZE := $(shell \
-      $(EXPR) `wmic computersystem get totalphysicalmemory -value \
-          | $(GREP) = | $(SED) 's/\\r//g' \
+      $(EXPR) `wmic computersystem get totalphysicalmemory -value | $(GREP) = \
           | $(CUT) -d "=" -f 2-` / 1024 / 1024 \
   )
 endif

make/StaticLibsImage.gmk

@@ -32,13 +32,11 @@ include $(SPEC)
 include MakeBase.gmk
 include Modules.gmk
 
-ALL_MODULES = $(call FindAllModules)
-
 ################################################################################
 
 TARGETS :=
 
-$(foreach m, $(ALL_MODULES), \
+$(foreach m, $(STATIC_LIBS_MODULES), \
   $(eval $(call SetupCopyFiles, COPY_STATIC_LIBS_$m, \
       FLATTEN := true, \
       SRC := $(SUPPORT_OUTPUTDIR)/native/$m, \

make/ToolsJdk.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -74,7 +74,6 @@ TOOL_TZDB = $(JAVA_SMALL) -cp $(BUILDTOOLS_OUTPUTDIR)/jdk_tools_classes \
     build.tools.tzdb.TzdbZoneRulesCompiler
 
 TOOL_BLACKLISTED_CERTS = $(JAVA_SMALL) -cp $(BUILDTOOLS_OUTPUTDIR)/jdk_tools_classes \
-    --add-exports java.base/sun.security.util=ALL-UNNAMED \
     build.tools.blacklistedcertsconverter.BlacklistedCertsConverter
 
 TOOL_MAKEJAVASECURITY = $(JAVA_SMALL) -cp $(BUILDTOOLS_OUTPUTDIR)/jdk_tools_classes \

make/autoconf/basics.m4

@@ -641,18 +641,17 @@ AC_DEFUN_ONCE([BASIC_SETUP_PATHS],
   AC_MSG_RESULT([$TOPDIR])
   AC_SUBST(TOPDIR)
 
-  # We can only call BASIC_FIXUP_PATH after BASIC_CHECK_PATHS_WINDOWS.
-  BASIC_FIXUP_PATH(CURDIR)
-  BASIC_FIXUP_PATH(TOPDIR)
-
   if test "x$CUSTOM_ROOT" != x; then
-    BASIC_FIXUP_PATH(CUSTOM_ROOT)
     WORKSPACE_ROOT="${CUSTOM_ROOT}"
   else
     WORKSPACE_ROOT="${TOPDIR}"
   fi
   AC_SUBST(WORKSPACE_ROOT)
 
+  # We can only call BASIC_FIXUP_PATH after BASIC_CHECK_PATHS_WINDOWS.
+  BASIC_FIXUP_PATH(CURDIR)
+  BASIC_FIXUP_PATH(TOPDIR)
+
   # Locate the directory of this script.
   AUTOCONF_DIR=$TOPDIR/make/autoconf
 

make/autoconf/flags-cflags.m4

@@ -169,7 +169,19 @@ AC_DEFUN([FLAGS_SETUP_WARNINGS],
     gcc)
       DISABLE_WARNING_PREFIX="-Wno-"
       CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
+      # Repeate the check for the BUILD_CC and BUILD_CXX. Need to also reset
+      # CFLAGS since any target specific flags will likely not work with the
+      # build compiler
+      CC_OLD="$CC"
+      CXX_OLD="$CXX"
+      CC="$BUILD_CC"
+      CXX="$BUILD_CXX"
+      CFLAGS_OLD="$CFLAGS"
+      CFLAGS=""
       BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-"
+      CC="$CC_OLD"
+      CXX="$CXX_OLD"
+      CFLAGS="$CFLAGS_OLD"
       ;;
     clang)
       DISABLE_WARNING_PREFIX="-Wno-"
@@ -364,17 +376,6 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS],
 
   FLAGS_SETUP_CFLAGS_CPU_DEP([TARGET])
 
-  # Repeat the check for the BUILD_CC and BUILD_CXX. Need to also reset CFLAGS
-  # since any target specific flags will likely not work with the build compiler.
-  CC_OLD="$CC"
-  CXX_OLD="$CXX"
-  CFLAGS_OLD="$CFLAGS"
-  CXXFLAGS_OLD="$CXXFLAGS"
-  CC="$BUILD_CC"
-  CXX="$BUILD_CXX"
-  CFLAGS=""
-  CXXFLAGS=""
-
   FLAGS_OS=$OPENJDK_BUILD_OS
   FLAGS_OS_TYPE=$OPENJDK_BUILD_OS_TYPE
   FLAGS_CPU=$OPENJDK_BUILD_CPU
@@ -386,11 +387,6 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS],
 
   FLAGS_SETUP_CFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_], [BUILD_])
 
-  CC="$CC_OLD"
-  CXX="$CXX_OLD"
-  CFLAGS="$CFLAGS_OLD"
-  CXXFLAGS="$CXXFLAGS_OLD"
-
   # Tests are only ever compiled for TARGET
   CFLAGS_TESTLIB="$CFLAGS_JDKLIB"
   CXXFLAGS_TESTLIB="$CXXFLAGS_JDKLIB"

make/autoconf/flags-ldflags.m4

@@ -77,7 +77,7 @@ AC_DEFUN([FLAGS_SETUP_LDFLAGS_HELPER],
     BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,-z,defs -Wl,-z,relro -Wl,-z,now"
     # s390x : remove unused code+data in link step
     if test "x$OPENJDK_TARGET_CPU" = xs390x; then
-      BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,--gc-sections"
+      BASIC_LDFLAGS="$BASIC_LDFLAGS -Wl,--gc-sections -Wl,--print-gc-sections"
     fi
 
     BASIC_LDFLAGS_JVM_ONLY="-Wl,-O1"

make/autoconf/flags.m4

@@ -224,12 +224,10 @@ AC_DEFUN([FLAGS_SETUP_SYSROOT_FLAGS],
     # We also need -iframework<path>/System/Library/Frameworks
     $1SYSROOT_CFLAGS="[$]$1SYSROOT_CFLAGS -iframework [$]$1SYSROOT/System/Library/Frameworks"
     $1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -iframework [$]$1SYSROOT/System/Library/Frameworks"
-    if test -d "[$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks" ; then
-      # These always need to be set on macOS 10.X, or we can't find the frameworks embedded in JavaVM.framework
-      # set this here so it doesn't have to be peppered throughout the forest
-      $1SYSROOT_CFLAGS="[$]$1SYSROOT_CFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks"
-      $1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks"
-    fi
+    # These always need to be set, or we can't find the frameworks embedded in JavaVM.framework
+    # set this here so it doesn't have to be peppered throughout the forest
+    $1SYSROOT_CFLAGS="[$]$1SYSROOT_CFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks"
+    $1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks"
   fi
 
   AC_SUBST($1SYSROOT_CFLAGS)

make/autoconf/help.m4

@@ -99,8 +99,6 @@ apt_help() {
       PKGHANDLER_COMMAND="sudo apt-get install libfontconfig1-dev" ;;
     freetype)
       PKGHANDLER_COMMAND="sudo apt-get install libfreetype6-dev" ;;
-    harfbuzz)
-      PKGHANDLER_COMMAND="sudo apt-get install libharfbuzz-dev" ;;
     ffi)
       PKGHANDLER_COMMAND="sudo apt-get install libffi-dev" ;;
     x11)
@@ -126,8 +124,6 @@ yum_help() {
       PKGHANDLER_COMMAND="sudo yum install fontconfig-devel" ;;
     freetype)
       PKGHANDLER_COMMAND="sudo yum install freetype-devel" ;;
-    harfbuzz)
-      PKGHANDLER_COMMAND="sudo yum install harfbuzz-devel" ;;
     x11)
       PKGHANDLER_COMMAND="sudo yum install libXtst-devel libXt-devel libXrender-devel libXrandr-devel libXi-devel" ;;
     ccache)

make/autoconf/hotspot.m4

@@ -25,7 +25,7 @@
 
 # All valid JVM features, regardless of platform
 VALID_JVM_FEATURES="compiler1 compiler2 zero minimal dtrace jvmti jvmci \
-    graal vm-structs jni-check services management cmsgc epsilongc g1gc parallelgc serialgc shenandoahgc zgc nmt cds \
+    graal vm-structs jni-check services management cmsgc epsilongc g1gc parallelgc serialgc zgc nmt cds \
     static-build link-time-opt aot jfr"
 
 # Deprecated JVM features (these are ignored, but with a warning)
@@ -274,14 +274,6 @@ AC_DEFUN_ONCE([HOTSPOT_ENABLE_DISABLE_CDS],
     fi
   fi
 
-  # Disable CDS on macos-aarch64
-  if test "x$OPENJDK_TARGET_OS" = "xmacosx" && test "x$OPENJDK_TARGET_CPU" = "xaarch64"; then
-    ENABLE_CDS="false"
-    if test "x$enable_cds" = "xyes"; then
-      AC_MSG_ERROR([CDS is currently not supported on AIX. Remove --enable-cds.])
-    fi
-  fi
-
   AC_SUBST(ENABLE_CDS)
 ])
 
@@ -360,19 +352,6 @@ AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_FEATURES],
     fi
   fi
 
-  # Only enable Shenandoah on supported arches, and only if requested
-  AC_MSG_CHECKING([if shenandoah can be built])
-  if HOTSPOT_CHECK_JVM_FEATURE(shenandoahgc); then
-    if test "x$OPENJDK_TARGET_CPU_ARCH" = "xx86" || test "x$OPENJDK_TARGET_CPU" = "xaarch64" ; then
-      AC_MSG_RESULT([yes])
-    else
-      DISABLED_JVM_FEATURES="$DISABLED_JVM_FEATURES shenandoahgc"
-      AC_MSG_RESULT([no, platform not supported])
-    fi
-  else
-      DISABLED_JVM_FEATURES="$DISABLED_JVM_FEATURES shenandoahgc"
-  fi
-
   # Only enable ZGC on supported platforms
   AC_MSG_CHECKING([if zgc can be built])
   if test "x$OPENJDK_TARGET_OS" = "xlinux" && test "x$OPENJDK_TARGET_CPU" = "xx86_64"; then
@@ -384,7 +363,7 @@ AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_FEATURES],
 
   # Disable unsupported GCs for Zero
   if HOTSPOT_CHECK_JVM_VARIANT(zero); then
-    DISABLED_JVM_FEATURES="$DISABLED_JVM_FEATURES epsilongc g1gc shenandoahgc zgc"
+    DISABLED_JVM_FEATURES="$DISABLED_JVM_FEATURES epsilongc g1gc zgc"
   fi
 
   # Turn on additional features based on other parts of configure
@@ -515,7 +494,7 @@ AC_DEFUN_ONCE([HOTSPOT_SETUP_JVM_FEATURES],
   fi
 
   # All variants but minimal (and custom) get these features
-  NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES cmsgc g1gc parallelgc serialgc epsilongc shenandoahgc jni-check jvmti management nmt services vm-structs zgc"
+  NON_MINIMAL_FEATURES="$NON_MINIMAL_FEATURES cmsgc g1gc parallelgc serialgc epsilongc jni-check jvmti management nmt services vm-structs zgc"
 
   AC_MSG_CHECKING([if cds should be enabled])
   if test "x$ENABLE_CDS" = "xtrue"; then

make/autoconf/lib-bundled.m4

@@ -37,7 +37,6 @@ AC_DEFUN_ONCE([LIB_SETUP_BUNDLED_LIBS],
   LIB_SETUP_LIBPNG
   LIB_SETUP_ZLIB
   LIB_SETUP_LCMS
-  LIB_SETUP_HARFBUZZ
 ])
 
 ################################################################################
@@ -261,43 +260,3 @@ AC_DEFUN_ONCE([LIB_SETUP_LCMS],
   AC_SUBST(LCMS_CFLAGS)
   AC_SUBST(LCMS_LIBS)
 ])
-
-################################################################################
-# Setup harfbuzz
-################################################################################
-AC_DEFUN_ONCE([LIB_SETUP_HARFBUZZ],
-[
-  AC_ARG_WITH(harfbuzz, [AS_HELP_STRING([--with-harfbuzz],
-      [use harfbuzz from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])
-
-  AC_MSG_CHECKING([for which harfbuzz to use])
-
-  DEFAULT_HARFBUZZ=bundled
-  # If user didn't specify, use DEFAULT_HARFBUZZ
-  if test "x${with_harfbuzz}" = "x"; then
-    with_harfbuzz=${DEFAULT_HARFBUZZ}
-  fi
-
-  if test "x${with_harfbuzz}" = "xbundled"; then
-    USE_EXTERNAL_HARFBUZZ=false
-    HARFBUZZ_CFLAGS=""
-    HARFBUZZ_LIBS=""
-    AC_MSG_RESULT([bundled])
-  elif test "x${with_harfbuzz}" = "xsystem"; then
-    AC_MSG_RESULT([system])
-    PKG_CHECK_MODULES([HARFBUZZ], [harfbuzz], [HARFBUZZ_FOUND=yes], [HARFBUZZ_FOUND=no])
-    if test "x${HARFBUZZ_FOUND}" = "xyes"; then
-      # PKG_CHECK_MODULES will set HARFBUZZ_CFLAGS and HARFBUZZ_LIBS
-      USE_EXTERNAL_HARFBUZZ=true
-    else
-      HELP_MSG_MISSING_DEPENDENCY([harfbuzz])
-      AC_MSG_ERROR([--with-harfbuzz=system specified, but no harfbuzz found! $HELP_MSG])
-    fi
-  else
-    AC_MSG_ERROR([Invalid value for --with-harfbuzz: ${with_harfbuzz}, use 'system' or 'bundled'])
-  fi
-
-  AC_SUBST(USE_EXTERNAL_HARFBUZZ)
-  AC_SUBST(HARFBUZZ_CFLAGS)
-  AC_SUBST(HARFBUZZ_LIBS)
-])

make/autoconf/lib-ffi.m4

@@ -85,20 +85,6 @@ AC_DEFUN_ONCE([LIB_SETUP_LIBFFI],
           [LIBFFI_FOUND=no]
       )
     fi
-    # on macos we need a special case for system's libffi as
-    # headers are located only in sdk in $SYSROOT and in ffi subfolder
-    if test "x$LIBFFI_FOUND" = xno; then
-      if test "x$SYSROOT" != "x"; then
-        AC_CHECK_HEADER([$SYSROOT/usr/include/ffi/ffi.h],
-            [
-              LIBFFI_FOUND=yes
-              LIBFFI_CFLAGS="-I${SYSROOT}/usr/include/ffi"
-              LIBFFI_LIBS=-lffi
-            ],
-            [LIBFFI_FOUND=no]
-        )
-      fi
-    fi
     if test "x$LIBFFI_FOUND" = xno; then
       HELP_MSG_MISSING_DEPENDENCY([ffi])
       AC_MSG_ERROR([Could not find libffi! $HELP_MSG])

make/autoconf/platform.m4

@@ -49,23 +49,10 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU],
       VAR_CPU_ENDIAN=little
       ;;
     arm*)
-      # Second argument is the os name from the trip/quad.
-      # on macos-aarch64, triplet returned by autoconf is
-      # arm-darwin*, but on darwin only aarch64 is present.
-      case "$2" in
-        *darwin*)
-          VAR_CPU=aarch64
-          VAR_CPU_ARCH=aarch64
-          VAR_CPU_BITS=64
-          VAR_CPU_ENDIAN=little
-        ;;
-        *)
-          VAR_CPU=arm
-          VAR_CPU_ARCH=arm
-          VAR_CPU_BITS=32
-          VAR_CPU_ENDIAN=little
-        ;;
-      esac
+      VAR_CPU=arm
+      VAR_CPU_ARCH=arm
+      VAR_CPU_BITS=32
+      VAR_CPU_ENDIAN=little
       ;;
     aarch64)
       VAR_CPU=aarch64
@@ -228,7 +215,7 @@ AC_DEFUN([PLATFORM_EXTRACT_TARGET_AND_BUILD],
 
   # Convert the autoconf OS/CPU value to our own data, into the VAR_OS/CPU variables.
   PLATFORM_EXTRACT_VARS_FROM_OS($build_os)
-  PLATFORM_EXTRACT_VARS_FROM_CPU($build_cpu, $build_os)
+  PLATFORM_EXTRACT_VARS_FROM_CPU($build_cpu)
   # ..and setup our own variables. (Do this explicitly to facilitate searching)
   OPENJDK_BUILD_OS="$VAR_OS"
   if test "x$VAR_OS_TYPE" != x; then
@@ -258,7 +245,7 @@ AC_DEFUN([PLATFORM_EXTRACT_TARGET_AND_BUILD],
 
   # Convert the autoconf OS/CPU value to our own data, into the VAR_OS/CPU variables.
   PLATFORM_EXTRACT_VARS_FROM_OS($host_os)
-  PLATFORM_EXTRACT_VARS_FROM_CPU($host_cpu, $host_os)
+  PLATFORM_EXTRACT_VARS_FROM_CPU($host_cpu)
   # ... and setup our own variables. (Do this explicitly to facilitate searching)
   OPENJDK_TARGET_OS="$VAR_OS"
   if test "x$VAR_OS_TYPE" != x; then

make/autoconf/spec.gmk.in

@@ -617,7 +617,7 @@ JAVA_JAVAC=@FIXPATH@ $(JAVA_CMD) $(JAVA_FLAGS_JAVAC) $(JAVA_FLAGS)
 JAVAC=@FIXPATH@ $(JAVAC_CMD)
 JAVADOC=@FIXPATH@ $(JAVADOC_CMD)
 JAR=@FIXPATH@ $(JAR_CMD)
-JLINK = @FIXPATH@ $(JLINK_CMD)
+JLINK = @FIXPATH@ $(JLINK_CMD) $(JAVA_TOOL_FLAGS_SMALL)
 JMOD = @FIXPATH@ $(JMOD_CMD) $(JAVA_TOOL_FLAGS_SMALL)
 JARSIGNER=@FIXPATH@ $(JARSIGNER_CMD)
 # A specific java binary with specific options can be used to run
@@ -832,10 +832,6 @@ USE_EXTERNAL_LCMS:=@USE_EXTERNAL_LCMS@
 LCMS_CFLAGS:=@LCMS_CFLAGS@
 LCMS_LIBS:=@LCMS_LIBS@
 
-USE_EXTERNAL_HARFBUZZ:=@USE_EXTERNAL_HARFBUZZ@
-HARFBUZZ_CFLAGS:=@HARFBUZZ_CFLAGS@
-HARFBUZZ_LIBS:=@HARFBUZZ_LIBS@
-
 USE_EXTERNAL_LIBPNG:=@USE_EXTERNAL_LIBPNG@
 PNG_LIBS:=@PNG_LIBS@
 PNG_CFLAGS:=@PNG_CFLAGS@

make/autoconf/toolchain.m4

@@ -948,14 +948,9 @@ AC_DEFUN_ONCE([TOOLCHAIN_SETUP_BUILD_COMPILERS],
     # FIXME: we should list the discovered compilers as an exclude pattern!
     # If we do that, we can do this detection before POST_DETECTION, and still
     # find the build compilers in the tools dir, if needed.
-    if test "x$OPENJDK_BUILD_OS" = xmacosx; then
-      BASIC_REQUIRE_PROGS(BUILD_CC, [clang cl cc gcc])
-      BASIC_REQUIRE_PROGS(BUILD_CXX, [clang++ cl CC g++])
-    else
-      BASIC_REQUIRE_PROGS(BUILD_CC, [cl cc gcc])
-      BASIC_REQUIRE_PROGS(BUILD_CXX, [cl CC g++])
-    fi
+    BASIC_REQUIRE_PROGS(BUILD_CC, [cl cc gcc])
     BASIC_FIXUP_EXECUTABLE(BUILD_CC)
+    BASIC_REQUIRE_PROGS(BUILD_CXX, [cl CC g++])
     BASIC_FIXUP_EXECUTABLE(BUILD_CXX)
     BASIC_PATH_PROGS(BUILD_NM, nm gcc-nm)
     BASIC_FIXUP_EXECUTABLE(BUILD_NM)

make/autoconf/version-numbers

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -28,12 +28,12 @@
 
 DEFAULT_VERSION_FEATURE=11
 DEFAULT_VERSION_INTERIM=0
-DEFAULT_VERSION_UPDATE=10
+DEFAULT_VERSION_UPDATE=8
 DEFAULT_VERSION_PATCH=0
 DEFAULT_VERSION_EXTRA1=0
 DEFAULT_VERSION_EXTRA2=0
 DEFAULT_VERSION_EXTRA3=0
-DEFAULT_VERSION_DATE=2021-01-19
+DEFAULT_VERSION_DATE=2020-07-14
 DEFAULT_VERSION_CLASSFILE_MAJOR=55  # "`$EXPR $DEFAULT_VERSION_FEATURE + 44`"
 DEFAULT_VERSION_CLASSFILE_MINOR=0
 DEFAULT_ACCEPTABLE_BOOT_VERSIONS="10 11"