JRE-29 fontconfig lib crashes CLion on OSX

Disabled fontconfig usage on OSX

(cherry picked from commit 431e14429c)

jb/project/docker/Dockerfile

@@ -0,0 +1,13 @@
+# jetbrains/runtime:jbr15env
+FROM centos:7
+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 gcc gcc-c++ libstdc++-devel 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 15
+RUN wget  https://cdn.azul.com/zulu/bin/zulu15.27.17-ca-jdk15.0.0-linux_x64.tar.gz \
+-O - | tar xz -C /
+RUN mv /zulu15.27.17-ca-jdk15.0.0-linux_x64 /jdk15.0.0
+ENV PATH /opt/rh/devtoolset-8/root/usr/bin:$PATH
+RUN mkdir .git
+RUN git config user.email "builduser@jetbrains.com"
+RUN git config user.name "builduser"

jb/project/java-gradle/build.gradle

@@ -0,0 +1,135 @@
+apply plugin: 'java'
+import org.gradle.internal.os.OperatingSystem
+
+repositories {
+    mavenCentral()
+}
+
+def test_jvm = {
+    if (project.hasProperty('jbsdkhome')) {
+        file(jbsdkhome + (OperatingSystem.current().isWindows()?"/bin/java.exe" : "/bin/java")).absolutePath
+    } else {
+        if (OperatingSystem.current().isMacOsX()) {
+            file('../../../build/macosx-x86_64-normal-server-release/images/jdk-bundle/jdk-11.0.4.jdk/Contents/Home/bin/java').absolutePath
+        } else if (OperatingSystem.current().isLinux()) {
+            file('../../../build/linux-x86_64-normal-server-release/images/jdk/bin/java').absolutePath
+        } else {
+            file('../../../build/windows-x86_64-normal-server-release/images/jdk/bin/java.exe').absolutePath
+        }
+    }
+}
+
+dependencies {
+    testCompile('junit:junit:4.12'){
+        exclude group: 'org.hamcrest'
+    }
+    testCompile 'org.hamcrest:hamcrest-library:1.3'
+    testCompile 'net.java.dev.jna:jna:4.4.0'
+    testCompile 'com.twelvemonkeys.imageio:imageio-tiff:3.3.2'
+    testCompile 'org.apache.commons:commons-lang3:3.0'
+}
+
+def jdk_modules = ["java.base", "java.logging", "java.prefs",
+               "java.se.ee", "java.sql", "java.datatransfer",
+               "java.management", "java.rmi", "java.security.jgss",
+               "java.sql.rowset", "java.desktop", "java.management.rmi",
+               "java.scripting", "java.security.sasl", "java.transaction",
+               "java.instrument", "java.naming", "java.se",
+               "java.smartcardio", "java.xml.crypto"]
+
+def jdk_class_dirs = []
+
+jdk_modules.collect(jdk_class_dirs) {
+    new File("../../../src/" + it + "/share/classes")
+}
+
+if (OperatingSystem.current().isMacOsX())
+    jdk_modules.collect(jdk_class_dirs) {
+        "../../../src/" + it + "/macosx/classes"
+    }
+else if (OperatingSystem.current().isLinux()) {
+    jdk_modules.collect(jdk_class_dirs) {
+        "../../../src/" + it + "/solaris/classes"
+    }
+    jdk_modules.collect(jdk_class_dirs) {
+        "../../../src/" + it + "/unix/classes"
+    }
+} else
+    jdk_modules.collect(jdk_class_dirs) {
+        "../../../src/" + it + "/windows/classes"
+    }
+
+sourceSets.main.java.srcDirs = jdk_class_dirs
+
+sourceSets {
+    test {
+        java {
+            srcDir "../../../test/jdk/jbu"
+        }
+    }
+}
+
+test.dependsOn.clear()
+
+test.dependsOn tasks.compileTestJava
+
+test {
+    systemProperty "jb.java2d.metal", "true"
+    systemProperty "testdata", file('../../../test/jdk/jbu/testdata').absolutePath
+
+//  Generate golden images for DroidFontTest and MixedTextTest
+//    systemProperty "gentestdata", ""
+
+//  Enable Java2D logging (https://confluence.jetbrains.com/display/JRE/Java2D+Rendering+Logging)
+//  systemProperty "sun.java2d.trace", "log"
+//  systemProperty "sun.java2d.trace", "log,pimpl"
+
+    outputs.upToDateWhen { false }
+    executable = test_jvm()
+
+//  Enable async/dtrace profiler
+    jvmArgs  "-XX:+PreserveFramePointer"
+//  Enable native J2D logging (only in debug build)
+//  Can be turned on for J2D by adding "#define DEBUG 1" into jdk/src/share/native/sun/java2d/Trace.h
+
+//    environment 'J2D_TRACE_LEVEL', '4'
+}
+
+def buildDir = project.buildscript.sourceFile.parentFile.parentFile.parentFile.parentFile
+
+def make_cmd = "make"
+if (OperatingSystem.current().isWindows()) {
+    def cyg_make_cmd = new File("c:/cygwin64/bin/make.exe")
+    if (cyg_make_cmd.exists()) make_cmd = cyg_make_cmd.absolutePath
+}
+def test_run = false
+task make_images {
+    doLast {
+        if (!test_run) {
+            def pb = new ProcessBuilder().command(make_cmd.toString(), "-C", buildDir.absolutePath, "images")
+            def proc = pb.redirectErrorStream(true).start()
+            proc.inputStream.eachLine { println it }
+            assert proc.waitFor() == 0
+        }
+    }
+}
+
+task make_clean {
+    doLast {
+        def pb = new ProcessBuilder().command(make_cmd.toString(), "-C", buildDir.absolutePath, "clean")
+        def proc = pb.redirectErrorStream(true).start()
+        proc.inputStream.eachLine { println it }
+        assert proc.waitFor() == 0
+    }
+}
+
+task run_test {
+    doLast {
+        test_run = true
+    }
+}
+
+tasks.cleanTest.dependsOn tasks.run_test
+classes.dependsOn.clear()
+classes.dependsOn tasks.make_images
+tasks.cleanClasses.dependsOn tasks.make_clean

jb/project/tools/common/scripts/common.sh

@@ -0,0 +1,54 @@
+VENDOR_NAME="JetBrains s.r.o."
+VENDOR_VERSION_STRING="JBR-${JBSDK_VERSION_WITH_DOTS}.${JDK_BUILD_NUMBER}-${build_number}"
+[ -z "$bundle_type" ] || VENDOR_VERSION_STRING="${VENDOR_VERSION_STRING}-${bundle_type}"
+
+do_reset_changes=0
+do_reset_dcevm=0
+HEAD_REVISION=0
+
+function do_exit() {
+  exit_code=$1
+  [ $do_reset_changes -eq 1 ] && git checkout HEAD modules.list src/java.desktop/share/classes/module-info.java
+  if [ $do_reset_dcevm -eq 1 ]; then
+    [ ! -z $HEAD_REVISION ] && git reset --hard $HEAD_REVISION
+  fi
+  exit "$exit_code"
+}
+
+function update_jsdk_mods() {
+  __jsdk=$1
+  __jcef_mods=$2
+  __orig_jsdk_mods=$3
+  __updated_jsdk_mods=$4
+  
+  # re-create java.desktop.jmod with updated module-info.class
+  tmp=.java.desktop.$$.tmp
+  mkdir "$tmp" || exit $?
+  "$__jsdk"/bin/jmod extract --dir "$tmp" "$__orig_jsdk_mods"/java.desktop.jmod || exit $?
+  "$__jsdk"/bin/javac \
+      --patch-module java.desktop="$__orig_jsdk_mods"/java.desktop.jmod \
+      --module-path "$__jcef_mods" -d "$tmp"/classes src/java.desktop/share/classes/module-info.java || exit $?
+  "$__jsdk"/bin/jmod \
+      create --class-path "$tmp"/classes --config "$tmp"/conf --header-files "$tmp"/include --legal-notice "$tmp"/legal --libs "$tmp"/lib \
+      java.desktop.jmod || exit $?
+  mv java.desktop.jmod "$__updated_jsdk_mods" || exit $?
+  rm -rf "$tmp"
+  
+  # re-create java.base.jmod with updated hashes
+  tmp=.java.base.$$.tmp
+  mkdir "$tmp" || exit $?
+  hash_modules=$("$JSDK"/bin/jmod describe "$__orig_jsdk_mods"/java.base.jmod | grep hashes | awk '{print $2}' | tr '\n' '|' | sed s/\|$//) || exit $?
+  "$__jsdk"/bin/jmod extract --dir "$tmp" "$__orig_jsdk_mods"/java.base.jmod || exit $?
+  rm "$__updated_jsdk_mods"/java.base.jmod || exit $? # temp exclude from path
+  "$__jsdk"/bin/jmod \
+      create --module-path "$__updated_jsdk_mods" --hash-modules "$hash_modules" \
+      --class-path "$tmp"/classes --cmds "$tmp"/bin --config "$tmp"/conf --header-files "$tmp"/include --legal-notice "$tmp"/legal --libs "$tmp"/lib \
+      java.base.jmod || exit $?
+  mv java.base.jmod "$__updated_jsdk_mods" || exit $?
+  rm -rf "$tmp"
+}
+
+function get_mods_list() {
+  __mods=$1
+  echo $(ls $__mods) | sed s/\.jmod/,/g | sed s/,$//g | sed s/' '//g
+}

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

@@ -0,0 +1,84 @@
+#!/bin/bash -x
+
+# The following parameters must be specified:
+#   JBSDK_VERSION    - specifies the current version of OpenJDK e.g. 11_0_6
+#   JDK_BUILD_NUMBER - specifies the number of OpenJDK build or the value of --with-version-build argument to configure
+#   build_number     - specifies the number of JetBrainsRuntime build
+#
+# jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+# jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+#
+# $ ./java --version
+# openjdk 11.0.6 2020-01-14
+# OpenJDK Runtime Environment (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number})
+# OpenJDK 64-Bit Server VM (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number}, mixed mode)
+#
+
+JBSDK_VERSION=$1
+JDK_BUILD_NUMBER=$2
+build_number=$3
+
+JBSDK_VERSION_WITH_DOTS=$(echo $JBSDK_VERSION | sed 's/_/\./g')
+
+source jb/project/tools/common/scripts/common.sh
+
+JBRSDK_BASE_NAME=jbrsdk-${JBSDK_VERSION}
+
+[ -z "$bundle_type" ] && (git apply -p0 < jb/project/tools/patches/exclude_jcef_module.patch || exit $?)
+
+sh configure \
+  --disable-warnings-as-errors \
+  --with-debug-level=release \
+  --with-vendor-name="${VENDOR_NAME}" \
+  --with-vendor-version-string="${VENDOR_VERSION_STRING}" \
+  --with-version-pre= \
+  --with-version-build=${JDK_BUILD_NUMBER} \
+  --with-version-opt=b${build_number} \
+  --with-boot-jdk=${BOOT_JDK} \
+  --enable-cds=yes || exit $?
+make clean CONF=linux-aarch64-server-release || exit $?
+make images CONF=linux-aarch64-server-release test-image || exit $?
+
+JBSDK=${JBRSDK_BASE_NAME}-linux-aarch64-b${build_number}
+BASE_DIR=build/linux-aarch64-server-release/images
+JSDK=${BASE_DIR}/jdk
+JBRSDK_BUNDLE=jbrsdk
+
+echo Fixing permissions
+chmod -R a+r $JSDK
+
+rm -rf $BASE_DIR/$JBRSDK_BUNDLE
+cp -r $JSDK $BASE_DIR/$JBRSDK_BUNDLE || exit $?
+
+echo Creating $JBSDK.tar.gz ...
+sed 's/JBR/JBRSDK/g' ${BASE_DIR}/${JBRSDK_BUNDLE}/release > release
+mv release ${BASE_DIR}/${JBRSDK_BUNDLE}/release
+
+tar -pcf $JBSDK.tar \
+  --exclude=*.debuginfo --exclude=demo --exclude=sample --exclude=man \
+  -C $BASE_DIR ${JBRSDK_BUNDLE} || exit $?
+gzip $JBSDK.tar || exit $?
+
+JBR_BUNDLE=jbr
+JBR_BASE_NAME=jbr-$JBSDK_VERSION
+rm -rf $BASE_DIR/$JBR_BUNDLE
+
+JBR=$JBR_BASE_NAME-linux-aarch64-b$build_number
+grep -v javafx modules.list | grep -v "jdk.internal.vm\|jdk.aot\|jcef" > modules.list.aarch64
+echo Running jlink....
+${JSDK}/bin/jlink \
+  --module-path ${JSDK}/jmods --no-man-pages --compress=2 \
+  --add-modules $(xargs < modules.list.aarch64 | sed s/" "//g | sed s/,$//g) \
+  --output ${BASE_DIR}/${JBR_BUNDLE} || exit $?
+
+echo Modifying release info ...
+grep -v \"^JAVA_VERSION\" ${JSDK}/release | grep -v \"^MODULES\" >> ${BASE_DIR}/${JBR_BUNDLE}/release
+
+echo Creating $JBR.tar.gz ...
+tar -pcf $JBR.tar -C $BASE_DIR ${JBR_BUNDLE} || exit $?
+gzip $JBR.tar || exit $?
+
+JBRSDK_TEST=$JBRSDK_BASE_NAME-linux-test-aarch64-b$build_number
+echo Creating $JBRSDK_TEST.tar.gz ...
+tar -pcf $JBRSDK_TEST.tar -C $BASE_DIR --exclude='test/jdk/demos' test || exit $?
+gzip $JBRSDK_TEST.tar || exit $?

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

@@ -0,0 +1,137 @@
+#!/bin/bash -x
+
+# The following parameters must be specified:
+#   JBSDK_VERSION    - specifies major version of OpenJDK e.g. 11_0_6 (instead of dots '.' underbars "_" are used)
+#   JDK_BUILD_NUMBER - specifies update release of OpenJDK build or the value of --with-version-build argument to configure
+#   build_number     - specifies the number of JetBrainsRuntime build
+#   bundle_type      - specifies bundle to be built; possible values:
+#                        <empty> or nomod - the release bundles without any additional modules (jcef)
+#                        jcef - the release bundles with jcef
+#                        fd - the fastdebug bundles which also include the jcef module
+#
+# jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+# jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+#
+# $ ./java --version
+# openjdk 11.0.6 2020-01-14
+# OpenJDK Runtime Environment (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number})
+# OpenJDK 64-Bit Server VM (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number}, mixed mode)
+#
+# Environment variables:
+#   JCEF_PATH - specifies the path to the directory with JCEF binaries.
+#               By default JCEF binaries should be located in ./jcef_linux_x64
+
+JBSDK_VERSION=$1
+JDK_BUILD_NUMBER=$2
+build_number=$3
+bundle_type=$4
+JBSDK_VERSION_WITH_DOTS=$(echo $JBSDK_VERSION | sed 's/_/\./g')
+JCEF_PATH=${JCEF_PATH:=./jcef_linux_x64}
+
+source jb/project/tools/common/scripts/common.sh
+
+function create_image_bundle {
+  __bundle_name=$1
+  __arch_name=$2
+  __modules_path=$3
+  __modules=$4
+
+  [ "$bundle_type" == "fd" ] && fastdebug_infix="fastdebug-"
+  JBR=${__bundle_name}-${JBSDK_VERSION}-linux-x64-${fastdebug_infix}b${build_number}
+
+  echo Running jlink....
+  [ -d "$IMAGES_DIR"/"$__arch_name" ] && rm -rf "${IMAGES_DIR:?}"/"$__arch_name"
+  $JSDK/bin/jlink \
+    --module-path "$__modules_path" --no-man-pages --compress=2 \
+    --add-modules "$__modules" --output "$IMAGES_DIR"/"$__arch_name"
+
+  grep -v "^JAVA_VERSION" "$JSDK"/release | grep -v "^MODULES" >> "$IMAGES_DIR"/"$__arch_name"/release
+  if [ "$__bundle_name" == "$JBRSDK_BUNDLE" ]; then
+    sed 's/JBR/JBRSDK/g' "$IMAGES_DIR"/"$__arch_name"/release > release
+    mv release "$IMAGES_DIR"/"$__arch_name"/release
+  fi
+
+  # jmod does not preserve file permissions (JDK-8173610)
+  [ -f "$IMAGES_DIR"/"$__arch_name"/lib/jcef_helper ] && chmod a+x "$IMAGES_DIR"/"$__arch_name"/lib/jcef_helper
+
+  echo Creating "$JBR".tar.gz ...
+  tar -pcf "$JBR".tar -C "$IMAGES_DIR" "$__arch_name" || do_exit $?
+  [ -f "$JBR".tar.gz ] && rm "$JBR.tar.gz"
+  gzip "$JBR".tar || do_exit $?
+  rm -rf "${IMAGES_DIR:?}"/"$__arch_name"
+}
+
+WITH_DEBUG_LEVEL="--with-debug-level=release"
+RELEASE_NAME=linux-x86_64-server-release
+
+case "$bundle_type" in
+  "jcef")
+    do_reset_changes=1
+    ;;
+  "dcevm")
+    HEAD_REVISION=$(git rev-parse HEAD)
+    git am jb/project/tools/patches/dcevm/*.patch || do_exit $?
+    do_reset_dcevm=1
+    do_reset_changes=1
+    ;;
+  "nomod" | "")
+    bundle_type=""
+    ;;
+  "fd")
+    do_reset_changes=1
+    WITH_DEBUG_LEVEL="--with-debug-level=fastdebug"
+    RELEASE_NAME=linux-x86_64-server-fastdebug
+    ;;
+esac
+
+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"$build_number" \
+  --with-boot-jdk="$BOOT_JDK" \
+  --enable-cds=yes || do_exit $?
+
+make clean CONF=$RELEASE_NAME || exit $?
+make images CONF=$RELEASE_NAME || do_exit $?
+
+IMAGES_DIR=build/$RELEASE_NAME/images
+JSDK=$IMAGES_DIR/jdk
+JSDK_MODS_DIR=$IMAGES_DIR/jmods
+JBRSDK_BUNDLE=jbrsdk
+
+echo Fixing permissions
+chmod -R a+r $JSDK
+
+if [ "$bundle_type" == "jcef" ] || [ "$bundle_type" == "dcevm" ] || [ "$bundle_type" == "fd" ]; then
+  git apply -p0 < jb/project/tools/patches/add_jcef_module.patch || do_exit $?
+  update_jsdk_mods $JSDK $JCEF_PATH/jmods $JSDK/jmods $JSDK_MODS_DIR || do_exit $?
+  cp $JCEF_PATH/jmods/* $JSDK_MODS_DIR # $JSDK/jmods is not changed
+
+  jbr_name_postfix="_${bundle_type}"
+fi
+
+# create runtime image bundle
+modules=$(xargs < modules.list | sed s/" "//g) || do_exit $?
+create_image_bundle "jbr${jbr_name_postfix}" "jbr" $JSDK_MODS_DIR "$modules" || do_exit $?
+
+# create sdk image bundle
+modules=$(cat $JSDK/release | grep MODULES | sed s/MODULES=//g | sed s/' '/,/g | sed s/\"//g | sed s/\\n//g) || do_exit $?
+if [ "$bundle_type" == "jcef" ] || [ "$bundle_type" == "dcevm" ] || [ "$bundle_type" == "fd" ] || [ "$bundle_type" == "$JBRSDK_BUNDLE" ]; then
+  modules=${modules},$(get_mods_list "$JCEF_PATH"/jmods)
+fi
+create_image_bundle $JBRSDK_BUNDLE $JBRSDK_BUNDLE $JSDK_MODS_DIR "$modules" || do_exit $?
+
+if [ -z "$bundle_type" ]; then
+    JBRSDK_TEST=${JBRSDK_BUNDLE}-${JBSDK_VERSION}-linux-test-x64-b${build_number}
+    echo Creating "$JBRSDK_TEST" ...
+    make test-image CONF=$RELEASE_NAME || do_exit $?
+    tar -pcf "$JBRSDK_TEST".tar -C $IMAGES_DIR --exclude='test/jdk/demos' test || do_exit $?
+    [ -f "$JBRSDK_TEST.tar.gz" ] && rm "$JBRSDK_TEST.tar.gz"
+    gzip "$JBRSDK_TEST".tar || do_exit $?
+fi
+
+do_exit 0

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

@@ -0,0 +1,81 @@
+#!/bin/bash -x
+
+# The following parameters must be specified:
+#   JBSDK_VERSION    - specifies the current version of OpenJDK e.g. 11_0_6
+#   JDK_BUILD_NUMBER - specifies the number of OpenJDK build or the value of --with-version-build argument to configure
+#   build_number     - specifies the number of JetBrainsRuntime build
+#
+# jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+# jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+#
+# $ ./java --version
+# openjdk 11.0.6 2020-01-14
+# OpenJDK Runtime Environment (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number})
+# OpenJDK 64-Bit Server VM (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number}, mixed mode)
+#
+
+JBSDK_VERSION=$1
+JDK_BUILD_NUMBER=$2
+build_number=$3
+
+JBSDK_VERSION_WITH_DOTS=$(echo $JBSDK_VERSION | sed 's/_/\./g')
+
+source jb/project/tools/common/scripts/common.sh
+
+JBRSDK_BASE_NAME=jbrsdk-${JBSDK_VERSION}
+
+[ -z "$bundle_type" ] && (git apply -p0 < jb/project/tools/patches/exclude_jcef_module.patch || exit $?)
+
+linux32 bash configure \
+  --disable-warnings-as-errors \
+  --with-debug-level=release \
+  --with-vendor-name="${VENDOR_NAME}" \
+  --with-vendor-version-string="${VENDOR_VERSION_STRING}" \
+  --with-version-pre= \
+  --with-version-build=$JDK_BUILD_NUMBER \
+  --with-version-opt=b${build_number} \
+  --with-boot-jdk=${BOOT_JDK} \
+  --enable-cds=yes || exit $?
+make clean CONF=linux-x86-server-release || exit $?
+make images CONF=linux-x86-server-release test-image || exit $?
+
+JBSDK=${JBRSDK_BASE_NAME}-linux-x86-b${build_number}
+BASE_DIR=build/linux-x86-server-release/images
+JSDK=${BASE_DIR}/jdk
+JBRSDK_BUNDLE=jbrsdk
+
+echo Fixing permissions
+chmod -R a+r $JSDK
+
+rm -rf $BASE_DIR/$JBRSDK_BUNDLE
+cp -r $JSDK $BASE_DIR/$JBRSDK_BUNDLE || exit $?
+
+echo Creating $JBSDK.tar.gz ...
+sed 's/JBR/JBRSDK/g' ${BASE_DIR}/${JBRSDK_BUNDLE}/release > release
+mv release ${BASE_DIR}/${JBRSDK_BUNDLE}/release
+
+tar -pcf $JBSDK.tar --exclude=*.debuginfo --exclude=demo --exclude=sample --exclude=man -C $BASE_DIR ${JBRSDK_BUNDLE} || exit $?
+gzip $JBSDK.tar || exit $?
+
+JBR_BUNDLE=jbr
+JBR_BASE_NAME=jbr-$JBSDK_VERSION
+rm -rf $BASE_DIR/$JBR_BUNDLE
+
+JBR=$JBR_BASE_NAME-linux-x86-b$build_number
+grep -v javafx modules.list | grep -v "jdk.internal.vm\|jdk.aot\|jcef" > modules.list.x86
+echo Running jlink....
+${JSDK}/bin/jlink \
+  --module-path ${JSDK}/jmods --no-man-pages --compress=2 \
+  --add-modules $(xargs < modules.list.x86 | sed s/" "//g | sed s/,$//g) --output ${BASE_DIR}/${JBR_BUNDLE} || exit $?
+
+echo Modifying release info ...
+grep -v \"^JAVA_VERSION\" ${JSDK}/release | grep -v \"^MODULES\" >> ${BASE_DIR}/${JBR_BUNDLE}/release
+
+echo Creating $JBR.tar.gz ...
+tar -pcf $JBR.tar -C $BASE_DIR $JBR_BUNDLE || exit $?
+gzip $JBR.tar || exit $?
+
+JBRSDK_TEST=$JBRSDK_BASE_NAME-linux-test-x86-b$build_number
+echo Creating $JBRSDK_TEST.tar.gz ...
+tar -pcf $JBRSDK_TEST.tar -C $BASE_DIR --exclude='test/jdk/demos' --exclude='test/hotspot/gtest' test || exit $?
+gzip $JBRSDK_TEST.tar || exit $?

jb/project/tools/mac/scripts/entitlements.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+    <dict>
+        <key>com.apple.security.cs.allow-jit</key>
+        <true/>
+        <key>com.apple.security.cs.allow-unsigned-executable-memory</key>
+        <true/>
+        <key>com.apple.security.cs.allow-dyld-environment-variables</key>
+        <true/>
+        <key>com.apple.security.cs.disable-library-validation</key>
+        <true/>
+        <key>com.apple.security.cs.disable-executable-page-protection</key>
+        <true/>
+    </dict>
+</plist>

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

@@ -0,0 +1,139 @@
+#!/bin/bash -x
+
+# The following parameters must be specified:
+#   JBSDK_VERSION    - specifies major version of OpenJDK e.g. 11_0_6 (instead of dots '.' underbars "_" are used)
+#   JDK_BUILD_NUMBER - specifies update release of OpenJDK build or the value of --with-version-build argument to configure
+#   build_number     - specifies the number of JetBrainsRuntime build
+#   bundle_type      - specifies bundle to be built; possible values:
+#                        <empty> or nomod - the release bundles without any additional modules (jcef)
+#                        jcef - the release bundles with jcef
+#                        fd - the fastdebug bundles which also include the jcef module
+#
+# jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+# jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+#
+# $ ./java --version
+# openjdk 11.0.6 2020-01-14
+# OpenJDK Runtime Environment (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number})
+# OpenJDK 64-Bit Server VM (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number}, mixed mode)
+#
+# Environment variables:
+#   JCEF_PATH - specifies the path to the directory with JCEF binaries.
+#               By default JCEF binaries should be located in ./jcef_mac
+
+JBSDK_VERSION=$1
+JDK_BUILD_NUMBER=$2
+build_number=$3
+bundle_type=$4
+JBSDK_VERSION_WITH_DOTS=$(echo "$JBSDK_VERSION" | sed 's/_/\./g')
+JCEF_PATH=${JCEF_PATH:=./jcef_mac}
+MAJOR_JBSDK_VERSION=$(echo "$JBSDK_VERSION_WITH_DOTS" | awk -F "." '{print $1}')
+BOOT_JDK=${BOOT_JDK:=$(/usr/libexec/java_home -v 14)}
+
+source jb/project/tools/common/scripts/common.sh
+
+function create_image_bundle {
+  __bundle_name=$1
+  __arch_name=$2
+  __modules_path=$3
+  __modules=$4
+
+  tmp=.bundle.$$.tmp
+  mkdir "$tmp" || do_exit $?
+
+  [ "$bundle_type" == "fd" ] && fastdebug_infix="fastdebug-"
+  JBR=${__bundle_name}-${JBSDK_VERSION}-osx-x64-${fastdebug_infix}b${build_number}
+
+  JRE_CONTENTS=$tmp/$__arch_name/Contents
+  mkdir -p "$JRE_CONTENTS" || do_exit $?
+
+  echo Running jlink...
+  "$JSDK"/bin/jlink \
+    --module-path "$__modules_path" --no-man-pages --compress=2 \
+    --add-modules "$__modules" --output "$JRE_CONTENTS/Home" || do_exit $?
+
+  grep -v "^JAVA_VERSION" "$JSDK"/release | grep -v "^MODULES" >> "$JRE_CONTENTS/Home/release"
+  if [ "$__bundle_name" == "$JBRSDK_BUNDLE" ]; then
+    sed 's/JBR/JBRSDK/g' $JRE_CONTENTS/Home/release > release
+    mv release $JRE_CONTENTS/Home/release
+  fi
+
+  cp -R "$JSDK"/../MacOS "$JRE_CONTENTS"
+  cp "$JSDK"/../Info.plist "$JRE_CONTENTS"
+  [ -n "$bundle_type" ] && (cp -a $JCEF_PATH/Frameworks "$JRE_CONTENTS" || do_exit $?)
+
+  echo Creating "$JBR".tar.gz ...
+  COPYFILE_DISABLE=1 tar -pczf "$JBR".tar.gz --exclude='*.dSYM' --exclude='man' -C "$tmp" "$__arch_name" || do_exit $?
+  rm -rf "$tmp"
+}
+
+WITH_DEBUG_LEVEL="--with-debug-level=release"
+RELEASE_NAME=macosx-x86_64-server-release
+
+case "$bundle_type" in
+  "jcef")
+    do_reset_changes=1
+    ;;
+  "dcevm")
+    HEAD_REVISION=$(git rev-parse HEAD)
+    git am jb/project/tools/patches/dcevm/*.patch || do_exit $?
+    do_reset_dcevm=1
+    do_reset_changes=1
+    ;;
+  "nomod" | "")
+    bundle_type=""
+    ;;
+  "fd")
+    do_reset_changes=1
+    WITH_DEBUG_LEVEL="--with-debug-level=fastdebug"
+    RELEASE_NAME=macosx-x86_64-server-fastdebug
+    ;;
+esac
+
+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"$build_number" \
+  --with-boot-jdk="$BOOT_JDK" \
+  --enable-cds=yes || do_exit $?
+
+make clean CONF=$RELEASE_NAME || do_exit $?
+make images CONF=$RELEASE_NAME || do_exit $?
+
+IMAGES_DIR=build/$RELEASE_NAME/images
+JSDK=$IMAGES_DIR/jdk-bundle/jdk-$MAJOR_JBSDK_VERSION.jdk/Contents/Home
+JSDK_MODS_DIR=$IMAGES_DIR/jmods
+JBRSDK_BUNDLE=jbrsdk
+
+if [ "$bundle_type" == "jcef" ] || [ "$bundle_type" == "dcevm" ] || [ "$bundle_type" == "fd" ]; then
+  git apply -p0 < jb/project/tools/patches/add_jcef_module.patch || do_exit $?
+  update_jsdk_mods "$JSDK" "$JCEF_PATH"/jmods "$JSDK"/jmods "$JSDK_MODS_DIR" || do_exit $?
+  cp $JCEF_PATH/jmods/* $JSDK_MODS_DIR # $JSDK/jmods is not changed
+
+  jbr_name_postfix="_${bundle_type}"
+fi
+
+# create runtime image bundle
+modules=$(xargs < modules.list | sed s/" "//g) || do_exit $?
+create_image_bundle "jbr${jbr_name_postfix}" "jbr" $JSDK_MODS_DIR "$modules" || do_exit $?
+
+# create sdk image bundle
+modules=$(cat "$JSDK"/release | grep MODULES | sed s/MODULES=//g | sed s/' '/,/g | sed s/\"//g | sed s/\\n//g) || do_exit $?
+if [ "$bundle_type" == "jcef" ] || [ "$bundle_type" == "dcevm" ] || [ "$bundle_type" == "fd" ] || [ "$bundle_type" == "$JBRSDK_BUNDLE" ]; then
+  modules=${modules},$(get_mods_list "$JCEF_PATH"/jmods)
+fi
+create_image_bundle "$JBRSDK_BUNDLE" "$JBRSDK_BUNDLE" "$JSDK_MODS_DIR" "$modules" || do_exit $?
+
+if [ -z "$bundle_type" ]; then
+    JBRSDK_TEST=${JBRSDK_BUNDLE}-${JBSDK_VERSION}-osx-test-x64-b${build_number}
+    echo Creating "$JBRSDK_TEST" ...
+    make test-image CONF=$RELEASE_NAME || do_exit $?
+    [ -f "$JBRSDK_TEST.tar.gz" ] && rm "$JBRSDK_TEST.tar.gz"
+    COPYFILE_DISABLE=1 tar -pczf "$JBRSDK_TEST".tar.gz -C $IMAGES_DIR --exclude='test/jdk/demos' test || do_exit $?
+fi
+
+do_exit 0

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

@@ -0,0 +1,120 @@
+#!/bin/bash
+
+APP_DIRECTORY=$1
+APPL_USER=$2
+APPL_PASSWORD=$3
+APP_NAME=$4
+BUNDLE_ID=$5
+FAKE_ROOT="${6:-fake-root}"
+
+if [[ -z "$APP_DIRECTORY" ]] || [[ -z "$APPL_USER" ]] || [[ -z "$APPL_PASSWORD" ]]; then
+  echo "Usage: $0 AppDirectory Username Password"
+  exit 1
+fi
+if [[ ! -d "$APP_DIRECTORY" ]]; then
+  echo "AppDirectory '$APP_DIRECTORY' does not exist or not a directory"
+  exit 1
+fi
+
+function log() {
+  echo "$(date '+[%H:%M:%S]') $*"
+}
+
+function publish-log() {
+  id=$1
+  file=$2
+  curl -T "$file" "$ARTIFACTORY_URL/$id" || true
+}
+
+function altool-upload() {
+  # Since altool uses same file for upload token we have to trick it into using different folders for token file location
+  # Also it copies zip into TMPDIR so we override it too, to simplify cleanup
+  OLD_HOME="$HOME"
+  export HOME="$FAKE_ROOT/home"
+  export TMPDIR="$FAKE_ROOT/tmp"
+  mkdir -p "$HOME"
+  mkdir -p "$TMPDIR"
+  export _JAVA_OPTIONS="-Duser.home=$HOME -Djava.io.tmpdir=$TMPDIR"
+  # Reduce amount of downloads, cache transporter libraries
+  shared_itmstransporter="$OLD_HOME/shared-itmstransporter"
+  if [[ -f "$shared_itmstransporter" ]]; then
+    cp -r "$shared_itmstransporter" "$HOME/.itmstransporter"
+  fi
+  # For some reason altool prints everything to stderr, not stdout
+  set +e
+  xcrun altool --notarize-app \
+    --username "$APPL_USER" --password "$APPL_PASSWORD" \
+    --primary-bundle-id "$BUNDLE_ID" \
+    --asc-provider JetBrainssro --file "$1" 2>&1 | tee "altool.init.out"
+  unset TMPDIR
+  export HOME="$OLD_HOME"
+  set -e
+}
+
+#immediately exit script with an error if a command fails
+set -euo pipefail
+
+file="$APP_NAME.zip"
+
+log "Zipping $file..."
+rm -rf "$file"
+ditto -c -k --sequesterRsrc --keepParent "$APP_DIRECTORY/Contents" "$file"
+
+log "Notarizing $file..."
+rm -rf "altool.init.out" "altool.check.out"
+altool-upload "$file"
+
+rm -rf "$file"
+
+notarization_info="$(grep -e "RequestUUID" "altool.init.out" | grep -oE '([0-9a-f-]{36})')"
+
+if [ -z "$notarization_info" ]; then
+  log "Faile to read RequestUUID from altool.init.out"
+  exit 10
+fi
+
+PATH="$PATH:/usr/local/bin/"
+
+log "Notarization request sent, awaiting response"
+spent=0
+
+while true; do
+  # For some reason altool prints everything to stderr, not stdout
+  xcrun altool --username "$APPL_USER" --notarization-info "$notarization_info" --password "$APPL_PASSWORD" >"altool.check.out" 2>&1 || true
+  status="$(grep -oe 'Status: .*' "altool.check.out" | cut -c 9- || true)"
+  log "Current status: $status"
+  if [ "$status" = "invalid" ]; then
+    log "Notarization failed"
+    ec=1
+  elif [ "$status" = "success" ]; then
+    log "Notarization succeeded"
+    ec=0
+  else
+    if [ "$status" != "in progress" ]; then
+      log "Unknown notarization status, waiting more, altool output:"
+      cat "altool.check.out"
+    fi
+    if [[ $spent -gt 60 ]]; then
+      log "Waiting time out (apx 60 minutes)"
+      ec=2
+      break
+    fi
+    sleep 60
+    ((spent += 1))
+    continue
+  fi
+  developer_log="developer_log.json"
+  log "Fetching $developer_log"
+  # TODO: Replace cut with trim or something better
+  url="$(grep -oe 'LogFileURL: .*' "altool.check.out" | cut -c 13-)"
+  wget "$url" -O "$developer_log" && cat "$developer_log" || true
+  if [ $ec != 0 ]; then
+    log "Publishing $developer_log"
+    publish-log "$notarization_info" "$developer_log"
+  fi
+  break
+done
+cat "altool.check.out"
+
+rm -rf "altool.init.out" "altool.check.out"
+exit $ec

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

@@ -0,0 +1,94 @@
+#!/bin/bash
+
+APP_DIRECTORY=$1
+JB_CERT=$2
+
+if [[ -z "$APP_DIRECTORY" ]] || [[ -z "$JB_CERT" ]]; then
+  echo "Usage: $0 AppDirectory CertificateID"
+  exit 1
+fi
+if [[ ! -d "$APP_DIRECTORY" ]]; then
+  echo "AppDirectory '$APP_DIRECTORY' does not exist or not a directory"
+  exit 1
+fi
+
+function log() {
+  echo "$(date '+[%H:%M:%S]') $*"
+}
+
+#immediately exit script with an error if a command fails
+set -euo pipefail
+
+# Cleanup files left from previous sign attempt (if any)
+find "$APP_DIRECTORY" -name '*.cstemp' -exec rm '{}' \;
+
+log "Signing libraries and executables..."
+# -perm +111 searches for executables
+for f in \
+   "Contents/Home/bin" \
+   "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 \
+      -v -s "$JB_CERT" --options=runtime \
+      --entitlements entitlements.xml {} \;
+  fi
+done
+
+log "Signing libraries in jars in $PWD"
+
+# todo: add set -euo pipefail; into the inner sh -c
+# `-e` prevents `grep -q && printf` loginc
+# with `-o pipefail` there's no input for 'while' loop
+find "$APP_DIRECTORY" -name '*.jar' \
+  -exec sh -c "set -u; unzip -l \"\$0\" | grep -q -e '\.dylib\$' -e '\.jnilib\$' -e '\.so\$' -e '^jattach\$' && printf \"\$0\0\" " {} \; |
+  while IFS= read -r -d $'\0' file; do
+    log "Processing libraries in $file"
+
+    rm -rf jarfolder jar.jar
+    mkdir jarfolder
+    filename="${file##*/}"
+    log "Filename: $filename"
+    cp "$file" jarfolder && (cd jarfolder && jar xf "$filename" && rm "$filename")
+
+    find jarfolder \
+      -type f \( -name "*.jnilib" -o -name "*.dylib" -o -name "*.so" -o -name "jattach" \) \
+      -exec codesign --timestamp \
+      -v -s "$JB_CERT" --options=runtime \
+      --entitlements entitlements.xml {} \;
+
+    (cd jarfolder; zip -q -r -o ../jar.jar .)
+    mv jar.jar "$file"
+  done
+
+rm -rf jarfolder jar.jar
+
+log "Signing other files..."
+for f in \
+  "Contents/MacOS"; 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 \
+      -v -s "$JB_CERT" --options=runtime \
+      --entitlements entitlements.xml {} \;
+  fi
+done
+
+#log "Signing executable..."
+#codesign --timestamp \
+#    -v -s "$JB_CERT" --options=runtime \
+#    --force \
+#    --entitlements entitlements.xml "$APP_DIRECTORY/Contents/MacOS/idea"
+
+log "Signing whole app..."
+codesign --timestamp \
+  -v -s "$JB_CERT" --options=runtime \
+  --force \
+  --entitlements entitlements.xml "$APP_DIRECTORY"
+
+log "Verifying java is not broken"
+find "$APP_DIRECTORY" \
+  -type f -name 'java' -perm +111 -exec {} -version \;

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

@@ -0,0 +1,138 @@
+#!/bin/bash
+
+#immediately exit script with an error if a command fails
+set -euo pipefail
+
+export COPY_EXTENDED_ATTRIBUTES_DISABLE=true
+export COPYFILE_DISABLE=true
+
+INPUT_FILE=$1
+EXPLODED=$2.exploded
+BACKUP_JMODS=$2.backup
+USERNAME=$3
+PASSWORD=$4
+CODESIGN_STRING=$5
+NOTARIZE=$6
+BUNDLE_ID=$7
+
+cd "$(dirname "$0")"
+
+function log() {
+  echo "$(date '+[%H:%M:%S]') $*"
+}
+
+log "Deleting $EXPLODED ..."
+if test -d "$EXPLODED"; then
+  find "$EXPLODED" -mindepth 1 -maxdepth 1 -exec chmod -R u+wx '{}' \;
+fi
+rm -rf "$EXPLODED"
+mkdir "$EXPLODED"
+rm -rf "$BACKUP_JMODS"
+mkdir "$BACKUP_JMODS"
+
+log "Unzipping $INPUT_FILE to $EXPLODED ..."
+tar -xzvf "$INPUT_FILE" --directory $EXPLODED
+rm "$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
+if test -f $EXPLODED/$BUILD_NAME/Contents/MacOS/libjli.dylib; then
+  mv $EXPLODED/$BUILD_NAME/Contents/MacOS/libjli.dylib $BACKUP_JMODS
+fi
+if test -d $EXPLODED/$BUILD_NAME/Contents/Home/Frameworks; then
+  mv $EXPLODED/$BUILD_NAME/Contents/Home/Frameworks $BACKUP_JMODS
+fi
+
+log "$INPUT_FILE extracted and removed"
+
+APPLICATION_PATH="$EXPLODED/$BUILD_NAME"
+
+find "$APPLICATION_PATH/Contents/Home/bin" \
+  -maxdepth 1 -type f -name '*.jnilib' -print0 |
+  while IFS= read -r -d $'\0' file; do
+    if [ -f "$file" ]; then
+      log "Linking $file"
+      b="$(basename "$file" .jnilib)"
+      ln -sf "$b.jnilib" "$(dirname "$file")/$b.dylib"
+    fi
+  done
+
+find "$APPLICATION_PATH/Contents/" \
+  -maxdepth 1 -type f -name '*.txt' -print0 |
+  while IFS= read -r -d $'\0' file; do
+    if [ -f "$file" ]; then
+      log "Moving $file"
+      mv "$file" "$APPLICATION_PATH/Contents/Resources"
+    fi
+  done
+
+non_plist=$(find "$APPLICATION_PATH/Contents/" -maxdepth 1 -type f -and -not -name 'Info.plist' | wc -l)
+if [[ $non_plist -gt 0 ]]; then
+  log "Only Info.plist file is allowed in Contents directory but found $non_plist file(s):"
+  log "$(find "$APPLICATION_PATH/Contents/" -maxdepth 1 -type f -and -not -name 'Info.plist')"
+  exit 1
+fi
+
+log "Unlocking keychain..."
+# Make sure *.p12 is imported into local KeyChain
+security unlock-keychain -p "$PASSWORD" "/Users/$USERNAME/Library/Keychains/login.keychain"
+
+attempt=1
+limit=3
+set +e
+while [[ $attempt -le $limit ]]; do
+  log "Signing (attempt $attempt) $APPLICATION_PATH ..."
+  ./sign.sh "$APPLICATION_PATH" "$CODESIGN_STRING"
+  ec=$?
+  if [[ $ec -ne 0 ]]; then
+    ((attempt += 1))
+    if [ $attempt -eq $limit ]; then
+      set -e
+    fi
+    log "Signing failed, wait for 30 sec and try to sign again"
+    sleep 30
+  else
+    log "Signing done"
+    codesign -v "$APPLICATION_PATH" -vvvvv
+    log "Check sign done"
+    ((attempt += limit))
+  fi
+done
+
+set -e
+
+if [ "$NOTARIZE" = "yes" ]; then
+  log "Notarizing..."
+  # shellcheck disable=SC1090
+  source "$HOME/.notarize_token"
+  APP_NAME=$(echo ${INPUT_FILE} | awk -F"." '{ print $1 }')
+  # Since notarization tool uses same file for upload token we have to trick it into using different folders, hence fake root
+  # Also it leaves copy of zip file in TMPDIR, so notarize.sh overrides it and uses FAKE_ROOT as location for temp TMPDIR
+  FAKE_ROOT="$(pwd)/fake-root"
+  mkdir -p "$FAKE_ROOT"
+  echo "Notarization will use fake root: $FAKE_ROOT"
+  ./notarize.sh "$APPLICATION_PATH" "$APPLE_USERNAME" "$APPLE_PASSWORD" "$APP_NAME" "$BUNDLE_ID" "$FAKE_ROOT"
+  rm -rf "$FAKE_ROOT"
+
+  set +e
+  log "Stapling..."
+  xcrun stapler staple "$APPLICATION_PATH"
+else
+  log "Notarization disabled"
+  log "Stapling disabled"
+fi
+
+log "Zipping $BUILD_NAME to $INPUT_FILE ..."
+(
+  #cd "$EXPLODED"
+  #ditto -c -k --sequesterRsrc --keepParent "$BUILD_NAME" "../$INPUT_FILE"
+  if test -d $BACKUP_JMODS/jmods; then
+    mv $BACKUP_JMODS/jmods $EXPLODED/$BUILD_NAME/Contents/Home
+  fi
+
+  COPYFILE_DISABLE=1 tar -pczf $INPUT_FILE --exclude='*.dSYM' --exclude='man' -C $EXPLODED $BUILD_NAME
+  log "Finished zipping"
+)
+rm -rf "$EXPLODED"
+log "Done"

jb/project/tools/patches/add_jcef_module.patch

@@ -0,0 +1,30 @@
+diff --git modules.list modules.list
+index 7c4b3e9cb6d..5ed60349ca7 100644
+--- modules.list
++++ modules.list
+@@ -53,4 +53,7 @@ jdk.security.jgss,
+ jdk.unsupported,
+ jdk.xml.dom,
+ jdk.zipfs,
+-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
+--- src/java.desktop/share/classes/module-info.java
++++ src/java.desktop/share/classes/module-info.java
+@@ -109,7 +109,11 @@ module java.desktop {
+     // see make/GensrcModuleInfo.gmk
+     exports sun.awt to
+         jdk.accessibility,
+-        jdk.unsupported.desktop;
++        jdk.unsupported.desktop,
++        jcef,
++        jogl.all;
++
++    exports java.awt.peer to jcef;
+ 
+     exports java.awt.dnd.peer to jdk.unsupported.desktop;
+     exports sun.awt.dnd to jdk.unsupported.desktop;

jb/project/tools/patches/dcevm/0003-Fix-class-cast-exception-on-redefinition-of-class-A-.patch

@@ -0,0 +1,29 @@
+From 960dafbeeba190911955c208b611fecc15d66738 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Wed, 11 Mar 2020 14:19:34 +0100
+Subject: [PATCH 03/34] Fix class cast exception on redefinition of class A,
+ that is superclass of B that has anonymous class C
+
+---
+ src/hotspot/share/oops/instanceKlass.cpp | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
+index 994fc8a3bc8..3be3a09ef8f 100644
+--- a/src/hotspot/share/oops/instanceKlass.cpp
++++ b/src/hotspot/share/oops/instanceKlass.cpp
+@@ -953,7 +953,10 @@ bool InstanceKlass::link_class_impl(TRAPS) {
+ 
+     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
++        // on redefinition.
++        if (!AllowEnhancedClassRedefinition || !newest_version()->is_redefining()) {
+           bool verify_ok = verify_code(THREAD);
+           if (!verify_ok) {
+             return false;
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0005-Support-for-Lambda-class-redefinition.patch

@@ -0,0 +1,240 @@
+From 39df5f163d4a0f1fd6b92313a5570808f19d5e20 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 4 Oct 2020 21:12:12 +0200
+Subject: [PATCH 05/34] Support for Lambda class redefinition
+
+---
+ .../share/classfile/classLoaderData.cpp       |  9 +++
+ .../share/classfile/classLoaderData.hpp       |  2 +-
+ .../share/classfile/systemDictionary.cpp      | 12 +++-
+ .../share/classfile/systemDictionary.hpp      |  1 +
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 65 +++++++++++++++++--
+ .../prims/jvmtiEnhancedRedefineClasses.hpp    |  1 +
+ .../share/prims/resolvedMethodTable.cpp       |  2 +
+ src/hotspot/share/prims/unsafe.cpp            |  1 +
+ 8 files changed, 83 insertions(+), 10 deletions(-)
+
+diff --git a/src/hotspot/share/classfile/classLoaderData.cpp b/src/hotspot/share/classfile/classLoaderData.cpp
+index 0cd90bb8c27..4d64c6b454a 100644
+--- a/src/hotspot/share/classfile/classLoaderData.cpp
++++ b/src/hotspot/share/classfile/classLoaderData.cpp
+@@ -593,6 +593,15 @@ Dictionary* ClassLoaderData::create_dictionary() {
+   return new Dictionary(this, size, resizable);
+ }
+ 
++void ClassLoaderData::exchange_holders(ClassLoaderData* cld) {
++  oop holder_oop = _holder.peek();
++  _holder.replace(cld->_holder.peek());
++  cld->_holder.replace(holder_oop);
++  WeakHandle<vm_class_loader_data> exchange = _holder;
++  _holder = cld->_holder;
++  cld->_holder = exchange;
++}
++
+ // Tell the GC to keep this klass alive while iterating ClassLoaderDataGraph
+ oop ClassLoaderData::holder_phantom() const {
+   // A klass that was previously considered dead can be looked up in the
+diff --git a/src/hotspot/share/classfile/classLoaderData.hpp b/src/hotspot/share/classfile/classLoaderData.hpp
+index ba2393f8dd0..e2ae0a77351 100644
+--- a/src/hotspot/share/classfile/classLoaderData.hpp
++++ b/src/hotspot/share/classfile/classLoaderData.hpp
+@@ -181,7 +181,7 @@ class ClassLoaderData : public CHeapObj<mtClass> {
+   bool has_accumulated_modified_oops()   { return _accumulated_modified_oops; }
+   oop holder_no_keepalive() const;
+   oop holder_phantom() const;
+-
++  void exchange_holders(ClassLoaderData* cld);
+  private:
+   void unload();
+   bool keep_alive() const       { return _keep_alive > 0; }
+diff --git a/src/hotspot/share/classfile/systemDictionary.cpp b/src/hotspot/share/classfile/systemDictionary.cpp
+index bd0cae7cb9b..8f2b46add4d 100644
+--- a/src/hotspot/share/classfile/systemDictionary.cpp
++++ b/src/hotspot/share/classfile/systemDictionary.cpp
+@@ -1062,10 +1062,14 @@ InstanceKlass* SystemDictionary::parse_stream(Symbol* class_name,
+                                               Handle class_loader,
+                                               ClassFileStream* st,
+                                               const ClassLoadInfo& cl_info,
++                                              InstanceKlass* old_klass,
+                                               TRAPS) {
+ 
+   EventClassLoad class_load_start_event;
+   ClassLoaderData* loader_data;
++  
++  bool is_redefining = (old_klass != NULL);
++  
+   bool is_unsafe_anon_class = cl_info.unsafe_anonymous_host() != NULL;
+ 
+   // - for unsafe anonymous class: create a new CLD whith a class holder that uses
+@@ -1094,8 +1098,12 @@ InstanceKlass* SystemDictionary::parse_stream(Symbol* class_name,
+                                                       class_name,
+                                                       loader_data,
+                                                       cl_info,
+-                                                      false, // pick_newest
++                                                      is_redefining, // pick_newest
+                                                       CHECK_NULL);
++  if (is_redefining && k != NULL) {
++    k->set_redefining(true);
++    k->set_old_version(old_klass);
++  }
+ 
+   if ((cl_info.is_hidden() || is_unsafe_anon_class) && k != NULL) {
+     // Hidden classes that are not strong and unsafe anonymous classes must update
+@@ -1998,7 +2006,7 @@ void SystemDictionary::remove_from_hierarchy(InstanceKlass* k) {
+   k->remove_from_sibling_list();
+ }
+ 
+-// (DCEVM) 
++// (DCEVM)
+ void SystemDictionary::update_constraints_after_redefinition() {
+   constraints()->update_after_redefinition();
+ }
+diff --git a/src/hotspot/share/classfile/systemDictionary.hpp b/src/hotspot/share/classfile/systemDictionary.hpp
+index 4547449dbec..931e655d631 100644
+--- a/src/hotspot/share/classfile/systemDictionary.hpp
++++ b/src/hotspot/share/classfile/systemDictionary.hpp
+@@ -329,6 +329,7 @@ public:
+                                      Handle class_loader,
+                                      ClassFileStream* st,
+                                      const ClassLoadInfo& cl_info,
++                                     InstanceKlass* old_klass,
+                                      TRAPS);
+ 
+   // Resolve from stream (called by jni_DefineClass and JVM_DefineClass)
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 92ce6c27b8a..8b765623dcd 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -494,6 +494,8 @@ void VM_EnhancedRedefineClasses::doit() {
+     ClassLoaderDataGraph::classes_do(&clear_cpool_cache);
+ 
+ 
++    // SystemDictionary::methods_do(fix_invoke_method);
++
+   // JSR-292 support
+   if (_any_class_has_resolved_methods) {
+     bool trace_name_printed = false;
+@@ -756,12 +758,34 @@ jvmtiError VM_EnhancedRedefineClasses::load_new_class_versions(TRAPS) {
+     // load hook event.
+     state->set_class_being_redefined(the_class, _class_load_kind);
+ 
+-    InstanceKlass* k = SystemDictionary::resolve_from_stream(the_class_sym,
+-                                                the_class_loader,
+-                                                protection_domain,
+-                                                &st,
+-                                                the_class,
+-                                                THREAD);
++    InstanceKlass* k;
++
++    if (InstanceKlass::cast(the_class)->is_anonymous()) {
++      const InstanceKlass* host_class = the_class->host_klass();
++
++      // Make sure it's the real host class, not another anonymous class.
++      while (host_class != NULL && host_class->is_anonymous()) {
++        host_class = host_class->host_klass();
++      }
++
++      k = SystemDictionary::parse_stream(the_class_sym,
++                                         the_class_loader,
++                                         protection_domain,
++                                         &st,
++                                         host_class,
++                                         the_class,
++                                         NULL,
++                                         THREAD);
++      k->class_loader_data()->exchange_holders(the_class->class_loader_data());
++      the_class->class_loader_data()->inc_keep_alive();
++    } else {
++      k = SystemDictionary::resolve_from_stream(the_class_sym,
++                                                  the_class_loader,
++                                                  protection_domain,
++                                                  &st,
++                                                  the_class,
++                                                  THREAD);
++    }
+     // Clear class_being_redefined just to be sure.
+     state->clear_class_being_redefined();
+ 
+@@ -1442,6 +1466,30 @@ void VM_EnhancedRedefineClasses::MethodDataCleaner::do_klass(Klass* k) {
+   }
+ }
+ 
++void VM_EnhancedRedefineClasses::fix_invoke_method(Method* method) {
++
++  constantPoolHandle other_cp = constantPoolHandle(method->constants());
++
++  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);
++      if (klass->new_version() != NULL) {
++        // Constant pool entry points to redefined class -- update to the new version
++        other_cp->klass_at_put(i, klass->newest_version());
++      }
++      assert(other_cp->resolved_klass_at(i)->new_version() == NULL, "Must be new klass!");
++    }
++  }
++
++  ConstantPoolCache* cp_cache = other_cp->cache();
++  if (cp_cache != NULL) {
++    cp_cache->clear_entries();
++  }
++
++}
++
++
++
+ void VM_EnhancedRedefineClasses::update_jmethod_ids() {
+   for (int j = 0; j < _matching_methods_length; ++j) {
+     Method* old_method = _matching_old_methods[j];
+@@ -1979,7 +2027,10 @@ 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
+-  ClassLoaderDataGraph::dictionary_classes_do(&closure);
++
++  ClassLoaderDataGraph::classes_do(&closure);
++  //ClassLoaderDataGraph::dictionary_classes_do(&closure);
++
+   log_trace(redefine, class, load)("%d classes affected", _affected_klasses->length());
+ 
+   // 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 60b62c3170a..d8a11b51fe9 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 {
+   void rollback();
+   static void mark_as_scavengable(nmethod* nm);
+   static void unpatch_bytecode(Method* method);
++  static void fix_invoke_method(Method* method);
+ 
+   // Figure out which new methods match old methods in name and signature,
+   // which methods have been added, and which are no longer present
+diff --git a/src/hotspot/share/prims/resolvedMethodTable.cpp b/src/hotspot/share/prims/resolvedMethodTable.cpp
+index 122bb8c186b..81b3aa96564 100644
+--- a/src/hotspot/share/prims/resolvedMethodTable.cpp
++++ b/src/hotspot/share/prims/resolvedMethodTable.cpp
+@@ -414,6 +414,8 @@ void ResolvedMethodTable::adjust_method_entries_dcevm(bool * trace_name_printed)
+         InstanceKlass* newer_klass = InstanceKlass::cast(old_method->method_holder()->new_version());
+         Method* 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());
++
+         assert(newer_klass == newer_method->method_holder(), "call after swapping redefined guts");
+         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 72d81ec9d6c..027afa3fabd 100644
+--- a/src/hotspot/share/prims/unsafe.cpp
++++ b/src/hotspot/share/prims/unsafe.cpp
+@@ -865,6 +865,7 @@ Unsafe_DefineAnonymousClass_impl(JNIEnv *env,
+                                                 host_loader,
+                                                 &st,
+                                                 cl_info,
++                                                NULL,
+                                                 CHECK_NULL);
+   if (anonk == NULL) {
+     return NULL;
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0006-Fix-no-original-bytecode-found-error-if-method-with-.patch

@@ -0,0 +1,135 @@
+From 5af1daedc86b5fec0f222cbdda3afbdf518985ea Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sat, 23 May 2020 10:02:15 +0200
+Subject: [PATCH 06/34] 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.
+---
+ src/hotspot/share/interpreter/bytecodes.cpp    |  2 +-
+ .../share/interpreter/interpreterRuntime.cpp   |  2 +-
+ src/hotspot/share/oops/method.cpp              |  8 ++++----
+ src/hotspot/share/oops/method.hpp              |  4 ++--
+ .../prims/jvmtiEnhancedRedefineClasses.cpp     | 18 ++++++++++--------
+ 5 files changed, 18 insertions(+), 16 deletions(-)
+
+diff --git a/src/hotspot/share/interpreter/bytecodes.cpp b/src/hotspot/share/interpreter/bytecodes.cpp
+index e377e36b88c..262ecc021b2 100644
+--- a/src/hotspot/share/interpreter/bytecodes.cpp
++++ b/src/hotspot/share/interpreter/bytecodes.cpp
+@@ -84,7 +84,7 @@ Bytecodes::Code Bytecodes::code_at(Method* method, int bci) {
+ Bytecodes::Code Bytecodes::non_breakpoint_code_at(const Method* method, address bcp) {
+   assert(method != NULL, "must have the method for breakpoint conversion");
+   assert(method->contains(bcp), "must be valid bcp in method");
+-  return method->orig_bytecode_at(method->bci_from(bcp));
++  return method->orig_bytecode_at(method->bci_from(bcp), false);
+ }
+ 
+ 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 ed3cc3eb6a2..504e59caf51 100644
+--- a/src/hotspot/share/interpreter/interpreterRuntime.cpp
++++ b/src/hotspot/share/interpreter/interpreterRuntime.cpp
+@@ -814,7 +814,7 @@ JRT_END
+ // Invokes
+ 
+ JRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, Method* method, address bcp))
+-  return method->orig_bytecode_at(method->bci_from(bcp));
++  return method->orig_bytecode_at(method->bci_from(bcp), false);
+ JRT_END
+ 
+ JRT_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 516f2bb8f2f..1c88511a5fc 100644
+--- a/src/hotspot/share/oops/method.cpp
++++ b/src/hotspot/share/oops/method.cpp
+@@ -1853,14 +1853,14 @@ bool CompressedLineNumberReadStream::read_pair() {
+ 
+ #if INCLUDE_JVMTI
+ 
+-Bytecodes::Code Method::orig_bytecode_at(int bci) const {
++Bytecodes::Code Method::orig_bytecode_at(int bci, bool no_fatal) const {
+   BreakpointInfo* bp = method_holder()->breakpoints();
+   for (; bp != NULL; bp = bp->next()) {
+     if (bp->match(this, bci)) {
+       return bp->orig_bytecode();
+     }
+   }
+-  {
++  if (!no_fatal) {
+     ResourceMark rm;
+     fatal("no original bytecode found in %s at bci %d", name_and_sig_as_C_string(), bci);
+   }
+@@ -2006,7 +2006,7 @@ BreakpointInfo::BreakpointInfo(Method* m, int bci) {
+   _signature_index = m->signature_index();
+   _orig_bytecode = (Bytecodes::Code) *m->bcp_from(_bci);
+   if (_orig_bytecode == Bytecodes::_breakpoint)
+-    _orig_bytecode = m->orig_bytecode_at(_bci);
++    _orig_bytecode = m->orig_bytecode_at(_bci, false);
+   _next = NULL;
+ }
+ 
+@@ -2015,7 +2015,7 @@ void BreakpointInfo::set(Method* method) {
+   {
+     Bytecodes::Code code = (Bytecodes::Code) *method->bcp_from(_bci);
+     if (code == Bytecodes::_breakpoint)
+-      code = method->orig_bytecode_at(_bci);
++      code = method->orig_bytecode_at(_bci, false);
+     assert(orig_bytecode() == code, "original bytecode must be the same");
+   }
+ #endif
+diff --git a/src/hotspot/share/oops/method.hpp b/src/hotspot/share/oops/method.hpp
+index 83ed2d9c3c1..4d4cc6dc012 100644
+--- a/src/hotspot/share/oops/method.hpp
++++ b/src/hotspot/share/oops/method.hpp
+@@ -230,7 +230,7 @@ class Method : public Metadata {
+ 
+   // JVMTI breakpoints
+ #if !INCLUDE_JVMTI
+-  Bytecodes::Code orig_bytecode_at(int bci) const {
++  Bytecodes::Code orig_bytecode_at(int bci, bool no_fatal) const {
+     ShouldNotReachHere();
+     return Bytecodes::_shouldnotreachhere;
+   }
+@@ -239,7 +239,7 @@ class Method : public Metadata {
+   };
+   u2   number_of_breakpoints() const {return 0;}
+ #else // !INCLUDE_JVMTI
+-  Bytecodes::Code orig_bytecode_at(int bci) const;
++  Bytecodes::Code orig_bytecode_at(int bci, bool no_fatal) const;
+   void set_orig_bytecode_at(int bci, Bytecodes::Code code);
+   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 8b765623dcd..a859b8e1162 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -1362,14 +1362,16 @@ void VM_EnhancedRedefineClasses::unpatch_bytecode(Method* method) {
+ 
+     if (code == Bytecodes::_breakpoint) {
+       int bci = method->bci_from(bcp);
+-      code = method->orig_bytecode_at(bci);
+-      java_code = Bytecodes::java_code(code);
+-      if (code != java_code &&
+-           (java_code == Bytecodes::_getfield ||
+-            java_code == Bytecodes::_putfield ||
+-            java_code == Bytecodes::_aload_0)) {
+-        // Let breakpoint table handling unpatch bytecode
+-        method->set_orig_bytecode_at(bci, java_code);
++      code = method->orig_bytecode_at(bci, true);
++      if (code != Bytecodes::_shouldnotreachhere) {
++        java_code = Bytecodes::java_code(code);
++        if (code != java_code &&
++             (java_code == Bytecodes::_getfield ||
++              java_code == Bytecodes::_putfield ||
++              java_code == Bytecodes::_aload_0)) {
++          // Let breakpoint table handling unpatch bytecode
++          method->set_orig_bytecode_at(bci, java_code);
++        }
+       }
+     } else {
+       java_code = Bytecodes::java_code(code);
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0007-Replace-deleted-method-with-Universe-throw_no_such_m.patch

@@ -0,0 +1,57 @@
+From 19d2274a5dff6e6b31474252b45e5e7484f0180b Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 24 May 2020 12:07:42 +0200
+Subject: [PATCH 07/34] Replace deleted method with
+ Universe::throw_no_such_method_error
+
+---
+ .../share/prims/resolvedMethodTable.cpp       | 28 +++++++++----------
+ 1 file changed, 14 insertions(+), 14 deletions(-)
+
+diff --git a/src/hotspot/share/prims/resolvedMethodTable.cpp b/src/hotspot/share/prims/resolvedMethodTable.cpp
+index 81b3aa96564..caf03ffe56d 100644
+--- a/src/hotspot/share/prims/resolvedMethodTable.cpp
++++ b/src/hotspot/share/prims/resolvedMethodTable.cpp
+@@ -404,25 +404,25 @@ void ResolvedMethodTable::adjust_method_entries_dcevm(bool * trace_name_printed)
+ 
+       if (old_method->is_old()) {
+ 
++        InstanceKlass* newer_klass = InstanceKlass::cast(old_method->method_holder()->new_version());
++        Method* newer_method;
++
+         // Method* new_method;
+         if (old_method->is_deleted()) {
+-          // FIXME:(DCEVM) - check if exception can be thrown
+-          // new_method = Universe::throw_no_such_method_error();
+-          continue;
+-        }
+-
+-        InstanceKlass* newer_klass = InstanceKlass::cast(old_method->method_holder()->new_version());
+-        Method* newer_method = newer_klass->method_with_idnum(old_method->orig_method_idnum());
++          newer_method = Universe::throw_no_such_method_error();
++        } 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_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());
+ 
+-        assert(newer_klass == newer_method->method_holder(), "call after swapping redefined guts");
+-        assert(newer_method != NULL, "method_with_idnum() should not be NULL");
+-        assert(old_method != newer_method, "sanity check");
++          assert(newer_klass == newer_method->method_holder(), "call after swapping redefined guts");
++          assert(newer_method != NULL, "method_with_idnum() should not be NULL");
++          assert(old_method != newer_method, "sanity check");
+ 
+-        if (_the_table->lookup(newer_method) != NULL) {
+-          // old method was already adjusted if new method exists in _the_table
+-            continue;
++          if (_the_table->lookup(newer_method) != NULL) {
++            // old method was already adjusted if new method exists in _the_table
++              continue;
++          }
+         }
+ 
+         java_lang_invoke_ResolvedMethodName::set_vmtarget(mem_name, newer_method);
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0009-Change-log-level-in-advanced-redefinition.patch

@@ -0,0 +1,50 @@
+From ca47ab5a0a6ce8e2644736f323a335a957311af9 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sat, 13 Jun 2020 18:50:59 +0200
+Subject: [PATCH 09/34] 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 6c9eb40ecf5..b09ba554e07 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -916,7 +916,7 @@ 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 caf03ffe56d..eb9fcda44f3 100644
+--- a/src/hotspot/share/prims/resolvedMethodTable.cpp
++++ b/src/hotspot/share/prims/resolvedMethodTable.cpp
+@@ -413,7 +413,7 @@ 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");
+@@ -433,7 +433,7 @@ 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-AllowEnhancedClassRedefinition-is-false-disabled-by-.patch

@@ -0,0 +1,26 @@
+From 7e236beee0375656d1955fc1168143c1639fb7f1 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Tue, 6 Oct 2020 22:15:31 +0200
+Subject: [PATCH 10/34] 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 5b367704800..2710c6ea0e5 100644
+--- a/src/hotspot/share/runtime/globals.hpp
++++ b/src/hotspot/share/runtime/globals.hpp
+@@ -2466,7 +2466,7 @@ const size_t minimumSymbolTableSize = 1024;
+   diagnostic(bool, DeoptimizeNMethodBarriersALot, false,                    \
+                 "Make nmethod barriers deoptimise a lot.")                  \
+                                                                             \
+-  product(bool, AllowEnhancedClassRedefinition, true,                       \
++  product(bool, AllowEnhancedClassRedefinition, false,                      \
+              "Allow enhanced class redefinition beyond swapping method "    \
+              "bodies")                                                      \
+                                                                             \
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0012-Set-HOTSPOT_VM_DISTRO-Dynamic-Code-Evolution.patch

@@ -0,0 +1,25 @@
+From d56e73885111b386771f564ec6beb305338993df Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Mon, 19 Oct 2020 20:00:04 +0200
+Subject: [PATCH 12/34] Set HOTSPOT_VM_DISTRO=Dynamic Code Evolution
+
+---
+ 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 aabdc5bed20..df8025a2e84 100644
+--- a/make/autoconf/version-numbers
++++ b/make/autoconf/version-numbers
+@@ -45,7 +45,7 @@ PRODUCT_NAME=OpenJDK
+ PRODUCT_SUFFIX="Runtime Environment"
+ JDK_RC_PLATFORM_NAME=Platform
+ COMPANY_NAME=N/A
+-HOTSPOT_VM_DISTRO="OpenJDK"
++HOTSPOT_VM_DISTRO="Dynamic Code Evolution"
+ VENDOR_URL=https://openjdk.java.net/
+ VENDOR_URL_BUG=https://bugreport.java.com/bugreport/
+ VENDOR_URL_VM_BUG=https://bugreport.java.com/bugreport/crash.jsp
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0013-Fix-G1-nmethod-registration.patch

@@ -0,0 +1,71 @@
+From 7ebad43ed45805b0a3736c510f708ff17697ba7e Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 11 Oct 2020 10:43:28 +0200
+Subject: [PATCH 13/34] 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 b09ba554e07..718426f2819 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -216,7 +216,14 @@ 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);
+@@ -521,8 +528,9 @@ 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);
+       }
+@@ -545,6 +553,11 @@ 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 9755944d70b..4c0412d343d 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/0014-Initialize-method-s-_new_version-_old_version-to-NUL.patch

@@ -0,0 +1,26 @@
+From 5c7e5f245f79d7e8575461dab0c356ed74c8e9a3 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Thu, 22 Oct 2020 20:15:20 +0200
+Subject: [PATCH 14/34] 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 1c88511a5fc..ce940cf10a9 100644
+--- a/src/hotspot/share/oops/method.cpp
++++ b/src/hotspot/share/oops/method.cpp
+@@ -91,7 +91,8 @@ 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/0015-Clear-dcevm-code-separation.patch

@@ -0,0 +1,193 @@
+From 6ffac6e5064ec6633fdbeb8520333dca00bc6a62 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Fri, 23 Oct 2020 10:20:26 +0200
+Subject: [PATCH 15/34] 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   | 16 +++++++++++-----
+ .../instrumentation/jfrEventClassTransformer.cpp |  2 +-
+ src/hotspot/share/oops/instanceKlass.cpp         | 10 ++++++----
+ src/hotspot/share/oops/method.cpp                |  2 +-
+ .../share/prims/jvmtiGetLoadedClasses.cpp        |  2 +-
+ src/hotspot/share/runtime/reflection.cpp         |  2 +-
+ 8 files changed, 28 insertions(+), 18 deletions(-)
+
+diff --git a/src/hotspot/share/classfile/systemDictionary.cpp b/src/hotspot/share/classfile/systemDictionary.cpp
+index 8f2b46add4d..9ac6ec96cb5 100644
+--- a/src/hotspot/share/classfile/systemDictionary.cpp
++++ b/src/hotspot/share/classfile/systemDictionary.cpp
+@@ -1241,7 +1241,7 @@ InstanceKlass* SystemDictionary::resolve_from_stream(Symbol* class_name,
+     MutexLocker mu(THREAD, SystemDictionary_lock);
+ 
+     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;
+@@ -2290,7 +2290,7 @@ 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 1d13c647452..548df01e557 100644
+--- a/src/hotspot/share/gc/serial/genMarkSweep.cpp
++++ b/src/hotspot/share/gc/serial/genMarkSweep.cpp
+@@ -334,7 +334,9 @@ 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 b6e9e0a308d..b2f24ddbeda 100644
+--- a/src/hotspot/share/interpreter/linkResolver.cpp
++++ b/src/hotspot/share/interpreter/linkResolver.cpp
+@@ -282,9 +282,14 @@ void LinkResolver::check_klass_accessibility(Klass* ref_klass, Klass* sel_klass,
+   if (!base_klass->is_instance_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,
+@@ -566,7 +571,8 @@ 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?");
+@@ -1011,7 +1017,7 @@ void LinkResolver::resolve_field(fieldDescriptor& fd,
+     //     or by the <init> method (in case of an instance field).
+     if (is_put && fd.access_flags().is_final()) {
+ 
+-      if (sel_klass != current_klass && sel_klass != current_klass->active_version()) {
++      if (sel_klass != current_klass && (!AllowEnhancedClassRedefinition || sel_klass != current_klass->active_version())) {
+         ResourceMark rm(THREAD);
+         stringStream ss;
+         ss.print("Update to %s final field %s.%s attempted from a different class (%s) than the field's declaring class",
+diff --git a/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp b/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp
+index 96fc139bea3..f7284197c5a 100644
+--- a/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp
++++ b/src/hotspot/share/jfr/instrumentation/jfrEventClassTransformer.cpp
+@@ -1471,7 +1471,7 @@ static InstanceKlass* create_new_instance_klass(InstanceKlass* ik, ClassFileStre
+                              cld,
+                              &cl_info,
+                              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 3be3a09ef8f..f8e60941046 100644
+--- a/src/hotspot/share/oops/instanceKlass.cpp
++++ b/src/hotspot/share/oops/instanceKlass.cpp
+@@ -199,7 +199,9 @@ bool InstanceKlass::has_nest_member(InstanceKlass* k, TRAPS) const {
+         // able to perform that loading but we can't exclude the compiler threads from
+         // executing this logic. But it should actually be impossible to trigger loading here.
+         Klass* k2 = _constants->klass_at(cp_index, THREAD);
+-        k2 = k2->newest_version();
++        if (AllowEnhancedClassRedefinition) {
++          k2 = k2->newest_version();
++        }
+         assert(!HAS_PENDING_EXCEPTION || PENDING_EXCEPTION->is_a(SystemDictionary::VirtualMachineError_klass()),
+                "Exceptions should not be possible here");
+         if (k2 == k) {
+@@ -1003,7 +1005,7 @@ bool InstanceKlass::link_class_impl(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);
+@@ -1084,7 +1086,7 @@ void InstanceKlass::initialize_impl(TRAPS) {
+     // we might end up throwing IE from link/symbol resolution sites
+     // that aren't expected to throw.  This would wreak havoc.  See 6320309.
+     while ((is_being_initialized() && !is_reentrant_initialization(jt)) 
+-            || (old_version() != NULL && InstanceKlass::cast(old_version())->is_being_initialized())) {
++            || (AllowEnhancedClassRedefinition && old_version() != NULL && InstanceKlass::cast(old_version())->is_being_initialized())) {
+       wait = true;
+       jt->set_class_to_be_initialized(this);
+       ol.wait_uninterruptibly(jt);
+@@ -3782,7 +3784,7 @@ 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 local interfaces
+diff --git a/src/hotspot/share/oops/method.cpp b/src/hotspot/share/oops/method.cpp
+index ce940cf10a9..2d8e5b0256b 100644
+--- a/src/hotspot/share/oops/method.cpp
++++ b/src/hotspot/share/oops/method.cpp
+@@ -2208,7 +2208,7 @@ 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 1c7677f270f..6c12ee64a6e 100644
+--- a/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp
+@@ -75,7 +75,7 @@ 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())));
+       if (_dictionary_walk) {
+         // Collect array classes this way when walking the dictionary (because array classes are
+diff --git a/src/hotspot/share/runtime/reflection.cpp b/src/hotspot/share/runtime/reflection.cpp
+index 0e7722dba7d..d67457f02ac 100644
+--- a/src/hotspot/share/runtime/reflection.cpp
++++ b/src/hotspot/share/runtime/reflection.cpp
+@@ -628,7 +628,7 @@ 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/0016-Fix-LoadedClassesClosure-fixes-problems-with-remote-.patch

@@ -0,0 +1,26 @@
+From dc675de6ac42819b8536827ea450fcad13a97448 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Wed, 11 Nov 2020 18:45:15 +0100
+Subject: [PATCH 16/34] 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 6c12ee64a6e..2a469555dbd 100644
+--- a/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiGetLoadedClasses.cpp
+@@ -75,7 +75,7 @@ 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())));
+       if (_dictionary_walk) {
+         // Collect array classes this way when walking the dictionary (because array classes are
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0018-pre-dcevm15-fix-GC-spaces-originally-in-removed-CMS-.patch

@@ -0,0 +1,183 @@
+From 1d682efa88c716e1849163d5abff3a3367581d16 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Mon, 16 Nov 2020 21:11:19 +0100
+Subject: [PATCH 18/34] pre dcevm15 - fix GC spaces originally in removed CMS
+ patch
+
+---
+ src/hotspot/share/gc/shared/space.cpp            | 16 ++++++++--------
+ src/hotspot/share/gc/shared/space.hpp            |  6 +++---
+ src/hotspot/share/gc/shared/space.inline.hpp     | 14 ++++++++------
+ .../share/prims/jvmtiEnhancedRedefineClasses.cpp |  6 ++----
+ 4 files changed, 21 insertions(+), 21 deletions(-)
+
+diff --git a/src/hotspot/share/gc/shared/space.cpp b/src/hotspot/share/gc/shared/space.cpp
+index 875a6dc854f..9772c32c42e 100644
+--- a/src/hotspot/share/gc/shared/space.cpp
++++ b/src/hotspot/share/gc/shared/space.cpp
+@@ -375,11 +375,11 @@ HeapWord* CompactibleSpace::forward_compact_top(size_t size, CompactPoint* cp, H
+ }
+ 
+ HeapWord* CompactibleSpace::forward(oop q, size_t size,
+-                                    CompactPoint* cp, HeapWord* compact_top) {
++                                    CompactPoint* cp, HeapWord* compact_top, bool force_forward) {
+   compact_top = forward_compact_top(size, cp, compact_top);
+ 
+   // store the forwarding pointer into the mark word
+-  if (cast_from_oop<HeapWord*>(q) != compact_top || (size_t)q->size() != size) {
++  if (force_forward || cast_from_oop<HeapWord*>(q) != compact_top || (size_t)q->size() != size) {
+     q->forward_to(oop(compact_top));
+     assert(q->is_gc_marked(), "encoding the pointer should preserve the mark");
+   } else {
+@@ -501,7 +501,7 @@ bool CompactibleSpace::must_rescue(oop old_obj, oop new_obj) {
+ 
+   } else {
+     assert(space_index(old_obj) != space_index(new_obj), "old_obj and new_obj must be in different spaces");
+-    if (tenured_gen->is_in_reserved(new_obj)) {
++    if (new_in_tenured) {
+       // Must never rescue when moving from the new into the old generation.
+       assert(GenCollectedHeap::heap()->young_gen()->is_in_reserved(old_obj), "old_obj must be in DefNewGeneration");
+       assert(space_index(old_obj) > space_index(new_obj), "must be");
+@@ -824,14 +824,14 @@ void OffsetTableContigSpace::verify() const {
+ // Compute the forward sizes and leave out objects whose position could
+ // possibly overlap other objects.
+ HeapWord* CompactibleSpace::forward_with_rescue(HeapWord* q, size_t size,
+-                                                CompactPoint* cp, HeapWord* compact_top) {
++                                                CompactPoint* cp, HeapWord* compact_top, bool force_forward) {
+   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) {
+ 
+     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");
++    // assert(size != new_size, "instances without changed size have to be updated prior to GC run");
+     forward_size = new_size;
+   }
+ 
+@@ -845,7 +845,7 @@ HeapWord* CompactibleSpace::forward_with_rescue(HeapWord* q, size_t size,
+     return compact_top;
+   }
+ 
+-  return forward(oop(q), forward_size, cp, compact_top);
++  return forward(oop(q), forward_size, cp, compact_top, force_forward);
+ }
+ 
+ // Compute the forwarding addresses for the objects that need to be rescued.
+@@ -861,11 +861,11 @@ HeapWord* CompactibleSpace::forward_rescued(CompactPoint* cp, HeapWord* compact_
+       // (DCEVM) There is a new version of the class of q => different size
+       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");
++        // assert(size != new_size, "instances without changed size have to be updated prior to GC run");
+         size = new_size;
+       }
+ 
+-      compact_top = cp->space->forward(oop(q), size, cp, compact_top);
++      compact_top = cp->space->forward(oop(q), size, cp, compact_top, true);
+       assert(compact_top <= end(), "must not write over end of space!");
+     }
+     MarkSweep::_rescued_oops->clear();
+diff --git a/src/hotspot/share/gc/shared/space.hpp b/src/hotspot/share/gc/shared/space.hpp
+index c9bfc365f0f..f7648995454 100644
+--- a/src/hotspot/share/gc/shared/space.hpp
++++ b/src/hotspot/share/gc/shared/space.hpp
+@@ -405,7 +405,7 @@ public:
+   virtual void prepare_for_compaction(CompactPoint* cp) = 0;
+   // MarkSweep support phase3
+   DEBUG_ONLY(int space_index(oop obj));
+-  bool must_rescue(oop old_obj, oop new_obj);
++  virtual bool must_rescue(oop old_obj, oop new_obj);
+   HeapWord* rescue(HeapWord* old_obj);
+   virtual void adjust_pointers();
+   // MarkSweep support phase4
+@@ -436,11 +436,11 @@ public:
+   // function of the then-current compaction space, and updates "cp->threshold
+   // accordingly".
+   virtual HeapWord* forward(oop q, size_t size, CompactPoint* cp,
+-                    HeapWord* compact_top);
++                    HeapWord* compact_top, bool force_forward);
+   // (DCEVM) same as forwad, but can rescue objects. Invoked only during
+   // redefinition runs
+   HeapWord* forward_with_rescue(HeapWord* q, size_t size, CompactPoint* cp,
+-                                HeapWord* compact_top);
++                                HeapWord* compact_top, bool force_forward);
+ 
+   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 5a93e93471b..fa645423685 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
+   HeapWord* cur_obj = space->bottom();
+   HeapWord* scan_limit = space->scan_limit();
+ 
++  bool force_forward = false;
++
+   while (cur_obj < scan_limit) {
+     assert(!space->scanned_block_is_obj(cur_obj) ||
+            oop(cur_obj)->mark_raw().is_marked() || oop(cur_obj)->mark_raw().is_unlocked() ||
+@@ -174,14 +176,15 @@ inline void CompactibleSpace::scan_and_forward(SpaceType* space, CompactPoint* c
+       size_t size = space->scanned_block_size(cur_obj);
+ 
+       if (redefinition_run) {
+-        compact_top = cp->space->forward_with_rescue(cur_obj, size, cp, compact_top);
++        compact_top = cp->space->forward_with_rescue(cur_obj, size, cp, compact_top, force_forward);
+         if (first_dead == NULL && oop(cur_obj)->is_gc_marked()) {
+           /* Was moved (otherwise, forward would reset mark),
+              set first_dead to here */
+           first_dead = cur_obj;
++          force_forward = true;
+         }
+       } else {
+-        compact_top = cp->space->forward(oop(cur_obj), size, cp, compact_top);
++        compact_top = cp->space->forward(oop(cur_obj), size, cp, compact_top, false);
+       }
+ 
+       cur_obj += size;
+@@ -197,9 +200,9 @@ inline void CompactibleSpace::scan_and_forward(SpaceType* space, CompactPoint* c
+ 
+       // see if we might want to pretend this object is alive so that
+       // we don't have to compact quite as often.
+-      if (cur_obj == compact_top && dead_spacer.insert_deadspace(cur_obj, end)) {
++      if (!redefinition_run && cur_obj == compact_top && dead_spacer.insert_deadspace(cur_obj, end)) {
+         oop obj = oop(cur_obj);
+-        compact_top = cp->space->forward(obj, obj->size(), cp, compact_top);
++        compact_top = cp->space->forward(obj, obj->size(), cp, compact_top, force_forward);
+         end_of_live = end;
+       } else {
+         // otherwise, it really is a free region.
+@@ -362,8 +365,7 @@ inline void CompactibleSpace::scan_and_compact(SpaceType* space, bool redefiniti
+       Prefetch::write(compaction_top, copy_interval);
+ 
+       // copy object and reinit its mark
+-      assert(cur_obj != compaction_top || oop(cur_obj)->klass()->new_version() != NULL,
+-             "everything in this pass should be moving");
++      assert(redefinition_run || cur_obj != compaction_top, "everything in this pass should be moving");
+       if (redefinition_run && oop(cur_obj)->klass()->new_version() != NULL) {
+         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 718426f2819..1da6661dd3e 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -431,13 +431,11 @@ public:
+       Klass* new_klass = obj->klass()->new_version();
+ 
+       if (new_klass->update_information() != NULL) {
+-        int size_diff = obj->size() - obj->size_given_klass(new_klass);
+-
+-        // Either new size is bigger or gap is to small to be filled
+-        if (size_diff < 0 || (size_diff > 0 && (size_t) size_diff < CollectedHeap::min_fill_size())) {
++        if (obj->size() - obj->size_given_klass(new_klass) != 0) {
+           // We need an instance update => set back to old klass
+           _needs_instance_update = true;
+         } else {
++          // Either new size is bigger or gap is to small to be filled
+           oop src = obj;
+           if (new_klass->is_copying_backwards()) {
+             copy_to_tmp(obj);
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0019-dcevm15-fix-java15-patch-compilation-issues.patch

@@ -0,0 +1,942 @@
+From 297f564f6af79fb824f5b4e9119f1d3d0c827fb0 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Mon, 16 Nov 2020 20:20:12 +0100
+Subject: [PATCH 19/34] dcevm15 - fix java15 patch compilation issues
+
+---
+ .../share/classfile/classFileParser.hpp       |   8 +-
+ .../share/classfile/classLoaderData.cpp       |   2 +-
+ src/hotspot/share/classfile/dictionary.hpp    |  10 +-
+ src/hotspot/share/classfile/javaClasses.hpp   |   2 +
+ .../share/gc/g1/g1FullGCCompactTask.cpp       |   4 +-
+ .../share/gc/g1/g1FullGCCompactionPoint.cpp   |   8 +-
+ .../share/gc/g1/g1FullGCPrepareTask.cpp       |   4 +-
+ src/hotspot/share/gc/shared/dcevmSharedGC.cpp |  14 +-
+ src/hotspot/share/gc/shared/dcevmSharedGC.hpp |   2 +-
+ src/hotspot/share/gc/shared/gcConfig.cpp      |   2 +-
+ src/hotspot/share/gc/shared/space.cpp         |   4 +-
+ .../share/interpreter/linkResolver.cpp        |   2 +-
+ src/hotspot/share/oops/instanceKlass.cpp      |  17 ++-
+ src/hotspot/share/oops/instanceKlass.hpp      |   1 +
+ src/hotspot/share/oops/klass.cpp              |   8 +-
+ src/hotspot/share/prims/jvm.cpp               |   2 +
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 129 +++++++++---------
+ .../prims/jvmtiEnhancedRedefineClasses.hpp    |  14 +-
+ src/hotspot/share/prims/jvmtiEnv.cpp          |  11 +-
+ .../share/prims/jvmtiRedefineClasses.cpp      |   1 +
+ src/hotspot/share/prims/methodHandles.hpp     |   3 +
+ src/hotspot/share/runtime/arguments.cpp       |  22 +--
+ src/hotspot/share/runtime/mutexLocker.cpp     |   2 +-
+ 23 files changed, 159 insertions(+), 113 deletions(-)
+
+diff --git a/src/hotspot/share/classfile/classFileParser.hpp b/src/hotspot/share/classfile/classFileParser.hpp
+index e5761e61767..0d266b9047e 100644
+--- a/src/hotspot/share/classfile/classFileParser.hpp
++++ b/src/hotspot/share/classfile/classFileParser.hpp
+@@ -150,9 +150,6 @@ class ClassFileParser {
+   const intArray* _method_ordering;
+   GrowableArray<Method*>* _all_mirandas;
+ 
+-  // Enhanced class redefinition
+-  const bool _pick_newest;
+-
+   enum { fixed_buffer_size = 128 };
+   u_char _linenumbertable_buffer[fixed_buffer_size];
+ 
+@@ -206,6 +203,9 @@ class ClassFileParser {
+   bool _has_vanilla_constructor;
+   int _max_bootstrap_specifier_index;  // detects BSS values
+ 
++  // (DCEVM) Enhanced class redefinition
++  const bool _pick_newest;
++
+   void parse_stream(const ClassFileStream* const stream, TRAPS);
+ 
+   void mangle_hidden_class_name(InstanceKlass* const ik);
+@@ -582,7 +582,7 @@ 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; }
+-  Array<Klass*>* local_interfaces() const { return _local_interfaces; }
++  Array<InstanceKlass*>* local_interfaces() const { return _local_interfaces; }
+ 
+   ReferenceType reference_type() const { return _rt; }
+   AccessFlags access_flags() const { return _access_flags; }
+diff --git a/src/hotspot/share/classfile/classLoaderData.cpp b/src/hotspot/share/classfile/classLoaderData.cpp
+index 4d64c6b454a..aadcd50ef4a 100644
+--- a/src/hotspot/share/classfile/classLoaderData.cpp
++++ b/src/hotspot/share/classfile/classLoaderData.cpp
+@@ -597,7 +597,7 @@ void ClassLoaderData::exchange_holders(ClassLoaderData* cld) {
+   oop holder_oop = _holder.peek();
+   _holder.replace(cld->_holder.peek());
+   cld->_holder.replace(holder_oop);
+-  WeakHandle<vm_class_loader_data> exchange = _holder;
++  WeakHandle<vm_weak_data> exchange = _holder;
+   _holder = cld->_holder;
+   cld->_holder = exchange;
+ }
+diff --git a/src/hotspot/share/classfile/dictionary.hpp b/src/hotspot/share/classfile/dictionary.hpp
+index 114a983e783..a50f4ff84d2 100644
+--- a/src/hotspot/share/classfile/dictionary.hpp
++++ b/src/hotspot/share/classfile/dictionary.hpp
+@@ -84,6 +84,11 @@ public:
+   void print_on(outputStream* st) const;
+   void verify();
+ 
++  // (DCEVM) Enhanced class redefinition
++  bool update_klass(unsigned int hash, Symbol* name, ClassLoaderData* loader_data, InstanceKlass* k, InstanceKlass* old_klass);
++
++  void rollback_redefinition();
++
+  private:
+   DictionaryEntry* new_entry(unsigned int hash, InstanceKlass* klass);
+ 
+@@ -106,11 +111,6 @@ public:
+ 
+   void free_entry(DictionaryEntry* entry);
+ 
+-  // Enhanced class redefinition
+-  bool update_klass(unsigned int hash, Symbol* name, ClassLoaderData* loader_data, InstanceKlass* k, InstanceKlass* old_klass);
+-
+-  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/javaClasses.hpp b/src/hotspot/share/classfile/javaClasses.hpp
+index a68c5139151..9abf2e1d105 100644
+--- a/src/hotspot/share/classfile/javaClasses.hpp
++++ b/src/hotspot/share/classfile/javaClasses.hpp
+@@ -255,7 +255,9 @@ 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);
++ public: // DCEVM
+   static void set_component_mirror(oop java_class, oop comp_mirror);
++ private:
+   static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
+                                        Handle classData, TRAPS);
+   static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
+diff --git a/src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp b/src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp
+index f70f4606dc8..a22ed48560d 100644
+--- a/src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp
++++ b/src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp
+@@ -157,14 +157,14 @@ void G1FullGCCompactTask::serial_compaction_dcevm() {
+ 
+ size_t G1FullGCCompactTask::G1CompactRegionClosureDcevm::apply(oop obj) {
+   size_t size = obj->size();
+-  HeapWord* destination = (HeapWord*)obj->forwardee();
++  HeapWord* destination = cast_from_oop<HeapWord*>(obj->forwardee());
+   if (destination == NULL) {
+     // Object not moving
+     return size;
+   }
+ 
+   // copy object and reinit its mark
+-  HeapWord* obj_addr = (HeapWord*) obj;
++  HeapWord* obj_addr = cast_from_oop<HeapWord*>(obj);
+ 
+   if (!_rescue_oops_it->at_end() && **_rescue_oops_it == obj_addr) {
+     ++(*_rescue_oops_it);
+diff --git a/src/hotspot/share/gc/g1/g1FullGCCompactionPoint.cpp b/src/hotspot/share/gc/g1/g1FullGCCompactionPoint.cpp
+index 1e49571c999..755935a2c91 100644
+--- a/src/hotspot/share/gc/g1/g1FullGCCompactionPoint.cpp
++++ b/src/hotspot/share/gc/g1/g1FullGCCompactionPoint.cpp
+@@ -174,7 +174,7 @@ void G1FullGCCompactionPoint::forward_dcevm(oop object, size_t size, bool force_
+   assert(_current_region != NULL, "Must have been initialized");
+ 
+   // Store a forwarding pointer if the object should be moved.
+-  if ((HeapWord*)object != _compaction_top || force_forward) {
++  if (cast_from_oop<HeapWord*>(object) != _compaction_top || force_forward) {
+     object->forward_to(oop(_compaction_top));
+   } else {
+     if (object->forwardee() != NULL) {
+@@ -188,11 +188,11 @@ void G1FullGCCompactionPoint::forward_dcevm(oop object, size_t size, bool force_
+     } else {
+       // Make sure object has the correct mark-word set or that it will be
+       // fixed when restoring the preserved marks.
+-      assert(object->mark_raw() == markOopDesc::prototype_for_object(object) || // Correct mark
+-             object->mark_raw()->must_be_preserved(object) || // Will be restored by PreservedMarksSet
++      assert(object->mark_raw() == markWord::prototype_for_klass(object->klass()) || // Correct mark
++             object->mark_must_be_preserved() || // Will be restored by PreservedMarksSet
+              (UseBiasedLocking && object->has_bias_pattern_raw()), // Will be restored by BiasedLocking
+              "should have correct prototype obj: " PTR_FORMAT " mark: " PTR_FORMAT " prototype: " PTR_FORMAT,
+-             p2i(object), p2i(object->mark_raw()), p2i(markOopDesc::prototype_for_object(object)));
++             p2i(object), object->mark_raw().value(), markWord::prototype_for_klass(object->klass()).value());
+     }
+     assert(object->forwardee() == NULL, "should be forwarded to NULL");
+   }
+diff --git a/src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp b/src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp
+index a45681b60cf..2f06b9617e4 100644
+--- a/src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp
++++ b/src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp
+@@ -269,7 +269,7 @@ size_t G1FullGCPrepareTask::G1PrepareCompactLiveClosureDcevm::apply(oop object)
+   HeapWord* compact_top = _cp->forward_compact_top(forward_size);
+ 
+   if (compact_top == NULL || must_rescue(object, oop(compact_top))) {
+-    _cp->rescued_oops()->append((HeapWord*)object);
++    _cp->rescued_oops()->append(cast_from_oop<HeapWord*>(object));
+   } else {
+     _cp->forward_dcevm(object, forward_size, (size != forward_size));
+   }
+@@ -295,7 +295,7 @@ bool G1FullGCPrepareTask::G1PrepareCompactLiveClosureDcevm::must_rescue(oop old_
+   int new_size = old_obj->size_given_klass(oop(old_obj)->klass()->new_version());
+   int original_size = old_obj->size();
+ 
+-  bool overlap = ((HeapWord*)old_obj + original_size < (HeapWord*)new_obj + new_size);
++  bool overlap = (cast_from_oop<HeapWord*>(old_obj) + original_size < cast_from_oop<HeapWord*>(new_obj) + new_size);
+ 
+   return overlap;
+ }
+diff --git a/src/hotspot/share/gc/shared/dcevmSharedGC.cpp b/src/hotspot/share/gc/shared/dcevmSharedGC.cpp
+index 803e645f843..3dee097f1d3 100644
+--- a/src/hotspot/share/gc/shared/dcevmSharedGC.cpp
++++ b/src/hotspot/share/gc/shared/dcevmSharedGC.cpp
+@@ -58,10 +58,10 @@ void DcevmSharedGC::copy_rescued_objects_back(GrowableArray<HeapWord*>* rescued_
+           DcevmSharedGC::update_fields(rescued_obj, new_obj);
+         } else {
+           rescued_obj->set_klass(new_klass);
+-          Copy::aligned_disjoint_words((HeapWord*)rescued_obj, (HeapWord*)new_obj, size);
++          Copy::aligned_disjoint_words(cast_from_oop<HeapWord*>(rescued_obj), cast_from_oop<HeapWord*>(new_obj), size);
+         }
+       } else {
+-        Copy::aligned_disjoint_words((HeapWord*)rescued_obj, (HeapWord*)new_obj, size);
++        Copy::aligned_disjoint_words(cast_from_oop<HeapWord*>(rescued_obj), cast_from_oop<HeapWord*>(new_obj), size);
+       }
+ 
+       new_obj->init_mark_raw();
+@@ -111,11 +111,11 @@ void DcevmSharedGC::update_fields(oop q, oop new_location) {
+ 
+   // Save object somewhere, there is an overlap in fields
+   if (new_klass_oop->is_copying_backwards()) {
+-    if (((HeapWord *)q >= (HeapWord *)new_location && (HeapWord *)q < (HeapWord *)new_location + new_size) ||
+-        ((HeapWord *)new_location >= (HeapWord *)q && (HeapWord *)new_location < (HeapWord *)q + size)) {
++    if ((cast_from_oop<HeapWord*>(q) >= cast_from_oop<HeapWord*>(new_location) && cast_from_oop<HeapWord*>(q) < cast_from_oop<HeapWord*>(new_location) + new_size) ||
++        (cast_from_oop<HeapWord*>(new_location) >= cast_from_oop<HeapWord*>(q) && cast_from_oop<HeapWord*>(new_location) < cast_from_oop<HeapWord*>(q) + size)) {
+        tmp = NEW_RESOURCE_ARRAY(HeapWord, size);
+        q = (oop) tmp;
+-       Copy::aligned_disjoint_words((HeapWord*)tmp_obj, (HeapWord*)q, size);
++       Copy::aligned_disjoint_words(cast_from_oop<HeapWord*>(tmp_obj), cast_from_oop<HeapWord*>(q), size);
+     }
+   }
+ 
+@@ -131,13 +131,13 @@ void DcevmSharedGC::update_fields(oop q, oop new_location) {
+ 
+ void DcevmSharedGC::update_fields(oop new_location, oop tmp_obj, int *cur) {
+   assert(cur != NULL, "just checking");
+-  char* to = (char*)(HeapWord*)new_location;
++  char* to = (char*)cast_from_oop<HeapWord*>(new_location);
+   while (*cur != 0) {
+     int size = *cur;
+     if (size > 0) {
+       cur++;
+       int offset = *cur;
+-      HeapWord* from = (HeapWord*)(((char *)(HeapWord*)tmp_obj) + offset);
++      HeapWord* from = (HeapWord*)(((char *)cast_from_oop<HeapWord*>(tmp_obj)) + offset);
+       if (size == HeapWordSize) {
+         *((HeapWord*)to) = *from;
+       } else if (size == HeapWordSize * 2) {
+diff --git a/src/hotspot/share/gc/shared/dcevmSharedGC.hpp b/src/hotspot/share/gc/shared/dcevmSharedGC.hpp
+index e2ef0171fb2..a4e27e00280 100644
+--- a/src/hotspot/share/gc/shared/dcevmSharedGC.hpp
++++ b/src/hotspot/share/gc/shared/dcevmSharedGC.hpp
+@@ -29,7 +29,7 @@
+ #include "gc/shared/genOopClosures.hpp"
+ #include "gc/shared/taskqueue.hpp"
+ #include "memory/iterator.hpp"
+-#include "oops/markOop.hpp"
++#include "oops/markWord.hpp"
+ #include "oops/oop.hpp"
+ #include "runtime/timer.hpp"
+ #include "utilities/growableArray.hpp"
+diff --git a/src/hotspot/share/gc/shared/gcConfig.cpp b/src/hotspot/share/gc/shared/gcConfig.cpp
+index f01d64d1434..5c1a09390f1 100644
+--- a/src/hotspot/share/gc/shared/gcConfig.cpp
++++ b/src/hotspot/share/gc/shared/gcConfig.cpp
+@@ -100,7 +100,7 @@ void GCConfig::fail_if_non_included_gc_is_selected() {
+ void GCConfig::select_gc_ergonomically() {
+   if (AllowEnhancedClassRedefinition && !UseG1GC) {
+     // Enhanced class redefinition only supports serial GC at the moment
+-    FLAG_SET_ERGO(bool, UseSerialGC, true);
++    FLAG_SET_ERGO(UseSerialGC, true);
+   } else if (os::is_server_class_machine()) {
+ #if INCLUDE_G1GC
+     FLAG_SET_ERGO_IF_DEFAULT(UseG1GC, true);
+diff --git a/src/hotspot/share/gc/shared/space.cpp b/src/hotspot/share/gc/shared/space.cpp
+index 9772c32c42e..e8e3d7884c2 100644
+--- a/src/hotspot/share/gc/shared/space.cpp
++++ b/src/hotspot/share/gc/shared/space.cpp
+@@ -440,7 +440,7 @@ int CompactibleSpace::space_index(oop obj) {
+     index++;
+   }
+ 
+-  tty->print_cr("could not compute space_index for %08xh", (HeapWord*)obj);
++  tty->print_cr("could not compute space_index for %08xh", cast_from_oop<HeapWord*>(obj));
+   index = 0;
+ 
+   Generation* gen = heap->old_gen();
+@@ -485,7 +485,7 @@ bool CompactibleSpace::must_rescue(oop old_obj, oop new_obj) {
+   bool new_in_tenured = tenured_gen->is_in_reserved(new_obj);
+   if (old_in_tenured == new_in_tenured) {
+     // Rescue if object may overlap with a higher memory address.
+-    bool overlap = ((HeapWord*)old_obj + original_size < (HeapWord*)new_obj + new_size);
++    bool overlap = (cast_from_oop<HeapWord*>(old_obj) + original_size < cast_from_oop<HeapWord*>(new_obj) + new_size);
+     if (old_in_tenured) {
+       // Old and new address are in same space, so just compare the address.
+       // Must rescue if object moves towards the top of the space.
+diff --git a/src/hotspot/share/interpreter/linkResolver.cpp b/src/hotspot/share/interpreter/linkResolver.cpp
+index b2f24ddbeda..9daeeb70b34 100644
+--- a/src/hotspot/share/interpreter/linkResolver.cpp
++++ b/src/hotspot/share/interpreter/linkResolver.cpp
+@@ -1031,7 +1031,7 @@ void LinkResolver::resolve_field(fieldDescriptor& fd,
+         assert(m != 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()->name() == vmSymbols::ha_class_initializer_name()));
++                                                   !(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/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
+index f8e60941046..5e40d78a87e 100644
+--- a/src/hotspot/share/oops/instanceKlass.cpp
++++ b/src/hotspot/share/oops/instanceKlass.cpp
+@@ -1316,7 +1316,7 @@ void InstanceKlass::init_implementor() {
+ // (DCEVM) - init_implementor() for dcevm
+ void InstanceKlass::init_implementor_from_redefine() {
+   assert(is_interface(), "not interface");
+-  Klass** addr = adr_implementor();
++  Klass* volatile* addr = adr_implementor();
+   assert(addr != NULL, "null addr");
+   if (addr != NULL) {
+     *addr = NULL;
+@@ -1659,6 +1659,21 @@ void InstanceKlass::methods_do(void f(Method* method)) {
+   }
+ }
+ 
++void InstanceKlass::methods_do(void f(Method* method, TRAPS), TRAPS) {
++  // Methods aren't stable until they are loaded.  This can be read outside
++  // a lock through the ClassLoaderData for profiling
++  if (!is_loaded()) {
++    return;
++  }
++
++  int len = methods()->length();
++  for (int index = 0; index < len; index++) {
++    Method* m = methods()->at(index);
++    assert(m->is_method(), "must be method");
++    f(m, CHECK);
++  }
++}
++
+ //  (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) {
+diff --git a/src/hotspot/share/oops/instanceKlass.hpp b/src/hotspot/share/oops/instanceKlass.hpp
+index 6ead9426728..b56d42cb177 100644
+--- a/src/hotspot/share/oops/instanceKlass.hpp
++++ b/src/hotspot/share/oops/instanceKlass.hpp
+@@ -1069,6 +1069,7 @@ public:
+   void clear_update_information();
+ 
+   void methods_do(void f(Method* method));
++  void methods_do(void f(Method* method, TRAPS), TRAPS);
+   void array_klasses_do(void f(Klass* k));
+   void array_klasses_do(void f(Klass* k, TRAPS), TRAPS);
+ 
+diff --git a/src/hotspot/share/oops/klass.cpp b/src/hotspot/share/oops/klass.cpp
+index 352d8f84631..88f5ec9ba4a 100644
+--- a/src/hotspot/share/oops/klass.cpp
++++ b/src/hotspot/share/oops/klass.cpp
+@@ -200,13 +200,13 @@ void* Klass::operator new(size_t size, ClassLoaderData* loader_data, size_t word
+ Klass::Klass(KlassID id) : _id(id),
+                            _java_mirror(NULL),
+                            _prototype_header(markWord::prototype()),
+-                           _shared_class_path_index(-1),
+-                           _new_version(NULL),
+                            _old_version(NULL),
++                           _new_version(NULL),
++                           _redefinition_flags(Klass::NoRedefinition),
+                            _is_redefining(false),
++                           _update_information(NULL),
+                            _is_copying_backwards(false),
+-                           _redefinition_flags(Klass::NoRedefinition),
+-                           _update_information(NULL) {
++                           _shared_class_path_index(-1) {
+   CDS_ONLY(_shared_class_flags = 0;)
+   CDS_JAVA_HEAP_ONLY(_archived_mirror = 0;)
+   _primary_supers[0] = this;
+diff --git a/src/hotspot/share/prims/jvm.cpp b/src/hotspot/share/prims/jvm.cpp
+index 333b65ccfc1..13bcac352fb 100644
+--- a/src/hotspot/share/prims/jvm.cpp
++++ b/src/hotspot/share/prims/jvm.cpp
+@@ -1054,6 +1054,7 @@ static jclass jvm_lookup_define_class(JNIEnv *env, jclass lookup, const char *na
+                                                       class_loader,
+                                                       protection_domain,
+                                                       &st,
++                                                      NULL,
+                                                       CHECK_NULL);
+ 
+     if (log_is_enabled(Debug, class, resolve) && defined_k != NULL) {
+@@ -1074,6 +1075,7 @@ static jclass jvm_lookup_define_class(JNIEnv *env, jclass lookup, const char *na
+                                                class_loader,
+                                                &st,
+                                                cl_info,
++                                               NULL,
+                                                CHECK_NULL);
+     if (defined_k == NULL) {
+       THROW_MSG_0(vmSymbols::java_lang_Error(), "Failure to define a hidden class");
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 1da6661dd3e..619e3988e3a 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -24,11 +24,14 @@
+ 
+ #include "precompiled.hpp"
+ #include "aot/aotLoader.hpp"
++#include "classfile/classFileParser.hpp"
+ #include "classfile/classFileStream.hpp"
+ #include "classfile/metadataOnStackMark.hpp"
+ #include "classfile/systemDictionary.hpp"
+ #include "classfile/verifier.hpp"
+ #include "classfile/dictionary.hpp"
++#include "classfile/classLoaderDataGraph.hpp"
++#include "interpreter/linkResolver.hpp"
+ #include "interpreter/oopMapCache.hpp"
+ #include "interpreter/rewriter.hpp"
+ #include "logging/logStream.hpp"
+@@ -37,17 +40,22 @@
+ #include "memory/resourceArea.hpp"
+ #include "memory/iterator.inline.hpp"
+ #include "oops/fieldStreams.hpp"
++#include "oops/fieldStreams.inline.hpp"
+ #include "oops/klassVtable.hpp"
+ #include "oops/oop.inline.hpp"
+ #include "oops/constantPool.inline.hpp"
++#include "oops/metadata.hpp"
++#include "oops/methodData.hpp"
+ #include "prims/jvmtiImpl.hpp"
+ #include "prims/jvmtiClassFileReconstituter.hpp"
+ #include "prims/jvmtiEnhancedRedefineClasses.hpp"
+ #include "prims/methodComparator.hpp"
+ #include "prims/resolvedMethodTable.hpp"
++#include "prims/methodHandles.hpp"
+ #include "runtime/deoptimization.hpp"
+ #include "runtime/jniHandles.inline.hpp"
+ #include "runtime/relocator.hpp"
++#include "runtime/fieldDescriptor.hpp"
+ #include "runtime/fieldDescriptor.inline.hpp"
+ #include "utilities/bitMap.inline.hpp"
+ #include "prims/jvmtiThreadState.inline.hpp"
+@@ -55,6 +63,8 @@
+ #include "oops/constantPool.inline.hpp"
+ #include "gc/g1/g1CollectedHeap.hpp"
+ #include "gc/shared/dcevmSharedGC.hpp"
++#include "gc/shared/scavengableNMethods.hpp"
++#include "ci/ciObjectFactory.hpp"
+ 
+ Array<Method*>* VM_EnhancedRedefineClasses::_old_methods = NULL;
+ Array<Method*>* VM_EnhancedRedefineClasses::_new_methods = NULL;
+@@ -66,6 +76,7 @@ int         VM_EnhancedRedefineClasses::_matching_methods_length = 0;
+ int         VM_EnhancedRedefineClasses::_deleted_methods_length  = 0;
+ int         VM_EnhancedRedefineClasses::_added_methods_length    = 0;
+ Klass*      VM_EnhancedRedefineClasses::_the_class_oop = NULL;
++u8        VM_EnhancedRedefineClasses::_id_counter = 0;
+ 
+ //
+ // Create new instance of enhanced class redefiner.
+@@ -88,6 +99,7 @@ VM_EnhancedRedefineClasses::VM_EnhancedRedefineClasses(jint class_count, const j
+   _class_load_kind = class_load_kind;
+   _res = JVMTI_ERROR_NONE;
+   _any_class_has_resolved_methods = false;
++  _id = next_id();
+ }
+ 
+ static inline InstanceKlass* get_ik(jclass def) {
+@@ -211,9 +223,7 @@ class FieldCopier : public FieldClosure {
+ 
+ // TODO: review...
+ void VM_EnhancedRedefineClasses::mark_as_scavengable(nmethod* nm) {
+-  if (!nm->on_scavenge_root_list()) {
+-    CodeCache::add_scavenge_root_nmethod(nm);
+-  }
++  ScavengableNMethods::register_nmethod(nm);
+ }
+ 
+ void VM_EnhancedRedefineClasses::unregister_nmethod_g1(nmethod* nm) {
+@@ -414,7 +424,7 @@ public:
+       _tmp_obj_size = size;
+       _tmp_obj = (oop)resource_allocate_bytes(size * HeapWordSize);
+     }
+-    Copy::aligned_disjoint_words((HeapWord*)o, (HeapWord*)_tmp_obj, size);
++    Copy::aligned_disjoint_words(cast_from_oop<HeapWord*>(o), cast_from_oop<HeapWord*>(_tmp_obj), size);
+   }
+ 
+   virtual void do_object(oop obj) {
+@@ -505,9 +515,6 @@ void VM_EnhancedRedefineClasses::doit() {
+     ClearCpoolCacheAndUnpatch clear_cpool_cache(thread);
+     ClassLoaderDataGraph::classes_do(&clear_cpool_cache);
+ 
+-
+-    // SystemDictionary::methods_do(fix_invoke_method);
+-
+   // JSR-292 support
+   if (_any_class_has_resolved_methods) {
+     bool trace_name_printed = false;
+@@ -564,8 +571,8 @@ void VM_EnhancedRedefineClasses::doit() {
+     InstanceKlass* old = InstanceKlass::cast(cur->old_version());
+ 
+     // Swap marks to have same hashcodes
+-    markOop cur_mark = cur->prototype_header();
+-    markOop old_mark = old->prototype_header();
++    markWord cur_mark = cur->prototype_header();
++    markWord old_mark = old->prototype_header();
+     cur->set_prototype_header(old_mark);
+     old->set_prototype_header(cur_mark);
+ 
+@@ -579,14 +586,14 @@ void VM_EnhancedRedefineClasses::doit() {
+       // Revert pool holder for old version of klass (it was updated by one of ours closure!)
+     old->constants()->set_pool_holder(old);
+ 
+-    Klass* array_klasses = old->array_klasses();
++    ObjArrayKlass* array_klasses = old->array_klasses();
+     if (array_klasses != NULL) {
+       assert(cur->array_klasses() == NULL, "just checking");
+ 
+       // Transfer the array classes, otherwise we might get cast exceptions when casting array types.
+       // Also, set array klasses element klass.
+       cur->set_array_klasses(array_klasses);
+-      ObjArrayKlass::cast(array_klasses)->set_element_klass(cur);
++      array_klasses->set_element_klass(cur);
+       java_lang_Class::release_set_array_klass(cur->java_mirror(), array_klasses);
+       java_lang_Class::set_component_mirror(array_klasses->java_mirror(), cur->java_mirror());
+     }
+@@ -641,11 +648,15 @@ void VM_EnhancedRedefineClasses::doit() {
+   //ClassLoaderDataGraph::classes_do(&clean_weak_method_links);
+ 
+   // Disable any dependent concurrent compilations
+-  SystemDictionary::notice_modification();
++  // SystemDictionary::notice_modification();
++
++  JvmtiExport::increment_redefinition_count();
+ 
+   // Set flag indicating that some invariants are no longer true.
+   // See jvmtiExport.hpp for detailed explanation.
+-  JvmtiExport::set_has_redefined_a_class();
++
++  // dcevm15: handled by _redefinition_count
++  // JvmtiExport::set_has_redefined_a_class();
+ 
+ #ifdef PRODUCT
+   if (log_is_enabled(Trace, redefine, class, obsolete, metadata)) {
+@@ -718,7 +729,7 @@ bool VM_EnhancedRedefineClasses::is_modifiable_class(oop klass_mirror) {
+   }
+ 
+   // Cannot redefine or retransform an anonymous class.
+-  if (InstanceKlass::cast(k)->is_anonymous()) {
++  if (InstanceKlass::cast(k)->is_unsafe_anonymous()) {
+     return false;
+   }
+   return true;
+@@ -804,22 +815,30 @@ jvmtiError VM_EnhancedRedefineClasses::load_new_class_versions(TRAPS) {
+ 
+     InstanceKlass* k;
+ 
+-    if (InstanceKlass::cast(the_class)->is_anonymous()) {
+-      const InstanceKlass* host_class = the_class->host_klass();
++    if (InstanceKlass::cast(the_class)->is_unsafe_anonymous()) {
++      const InstanceKlass* host_class = the_class->unsafe_anonymous_host();
+ 
+       // Make sure it's the real host class, not another anonymous class.
+-      while (host_class != NULL && host_class->is_anonymous()) {
+-        host_class = host_class->host_klass();
++      while (host_class != NULL && host_class->is_unsafe_anonymous()) {
++        host_class = host_class->unsafe_anonymous_host();
+       }
+ 
++      ClassLoadInfo cl_info(protection_domain,
++                            host_class,
++                            NULL,     // dynamic_nest_host
++                            NULL,     // cp_patches
++                            Handle(), // classData
++                            false,    // is_hidden
++                            false,    // is_strong_hidden
++                            true);    // FIXME: check if correct. can_access_vm_annotations
++
+       k = SystemDictionary::parse_stream(the_class_sym,
+                                          the_class_loader,
+-                                         protection_domain,
+                                          &st,
+-                                         host_class,
++                                         cl_info,
+                                          the_class,
+-                                         NULL,
+                                          THREAD);
++
+       k->class_loader_data()->exchange_holders(the_class->class_loader_data());
+       the_class->class_loader_data()->inc_keep_alive();
+     } else {
+@@ -966,7 +985,7 @@ int VM_EnhancedRedefineClasses::calculate_redefinition_flags(InstanceKlass* new_
+   // Check interfaces
+ 
+   // Interfaces removed?
+-  Array<Klass*>* old_interfaces = the_class->transitive_interfaces();
++  Array<InstanceKlass*>* old_interfaces = the_class->transitive_interfaces();
+   for (i = 0; i < old_interfaces->length(); i++) {
+     InstanceKlass* old_interface = InstanceKlass::cast(old_interfaces->at(i));
+     if (!new_class->implements_interface_any_version(old_interface)) {
+@@ -976,7 +995,7 @@ int VM_EnhancedRedefineClasses::calculate_redefinition_flags(InstanceKlass* new_
+   }
+ 
+   // Interfaces added?
+-  Array<Klass*>* new_interfaces = new_class->transitive_interfaces();
++  Array<InstanceKlass*>* new_interfaces = new_class->transitive_interfaces();
+   for (i = 0; i<new_interfaces->length(); i++) {
+     if (!the_class->implements_interface_any_version(new_interfaces->at(i))) {
+       result = result | Klass::ModifyClass;
+@@ -1389,8 +1408,8 @@ void VM_EnhancedRedefineClasses::rollback() {
+ // Rewrite faster byte-codes back to their slower equivalent. Undoes rewriting happening in templateTable_xxx.cpp
+ // The reason is that once we zero cpool caches, we need to re-resolve all entries again. Faster bytecodes do not
+ // do that, they assume that cache entry is resolved already.
+-void VM_EnhancedRedefineClasses::unpatch_bytecode(Method* method) {
+-  RawBytecodeStream bcs(method);
++void VM_EnhancedRedefineClasses::unpatch_bytecode(Method* method, TRAPS) {
++  RawBytecodeStream bcs(methodHandle(THREAD, method));
+   Bytecodes::Code code;
+   Bytecodes::Code java_code;
+   while (!bcs.is_last_bytecode()) {
+@@ -1454,11 +1473,11 @@ void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
+   HandleMark hm(_thread);
+   InstanceKlass *ik = InstanceKlass::cast(k);
+ 
+-  constantPoolHandle other_cp = constantPoolHandle(ik->constants());
++  constantPoolHandle other_cp = constantPoolHandle(_thread, 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) {
+-    ik->set_host_klass(InstanceKlass::cast(ik->host_klass()->newest_version()));
++  if (ik->is_unsafe_anonymous() && ik->unsafe_anonymous_host()->new_version() != NULL) {
++    ik->set_unsafe_anonymous_host(InstanceKlass::cast(ik->unsafe_anonymous_host()->newest_version()));
+   }
+ 
+   // Update implementor if there is only one, in this case implementor() can reference old class
+@@ -1492,7 +1511,18 @@ void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
+ 
+   // If bytecode rewriting is enabled, we also need to unpatch bytecode to force resolution of zeroed entries
+   if (RewriteBytecodes) {
+-    ik->methods_do(unpatch_bytecode);
++    ik->methods_do(unpatch_bytecode, _thread);
++  }
++}
++
++u8 VM_EnhancedRedefineClasses::next_id() {
++  while (true) {
++    u8 id = _id_counter;
++    u8 next_id = id + 1;
++    u8 result = Atomic::cmpxchg(&_id_counter, id, next_id);
++    if (result == id) {
++      return next_id;
++    }
+   }
+ }
+ 
+@@ -1512,31 +1542,8 @@ void VM_EnhancedRedefineClasses::MethodDataCleaner::do_klass(Klass* k) {
+   }
+ }
+ 
+-void VM_EnhancedRedefineClasses::fix_invoke_method(Method* method) {
+-
+-  constantPoolHandle other_cp = constantPoolHandle(method->constants());
+-
+-  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);
+-      if (klass->new_version() != NULL) {
+-        // Constant pool entry points to redefined class -- update to the new version
+-        other_cp->klass_at_put(i, klass->newest_version());
+-      }
+-      assert(other_cp->resolved_klass_at(i)->new_version() == NULL, "Must be new klass!");
+-    }
+-  }
+-
+-  ConstantPoolCache* cp_cache = other_cp->cache();
+-  if (cp_cache != NULL) {
+-    cp_cache->clear_entries();
+-  }
+-
+-}
+-
+ 
+-
+-void VM_EnhancedRedefineClasses::update_jmethod_ids() {
++void VM_EnhancedRedefineClasses::update_jmethod_ids(TRAPS) {
+   for (int j = 0; j < _matching_methods_length; ++j) {
+     Method* old_method = _matching_old_methods[j];
+     jmethodID jmid = old_method->find_jmethod_id_or_null();
+@@ -1547,10 +1554,10 @@ void VM_EnhancedRedefineClasses::update_jmethod_ids() {
+ 
+     if (jmid != NULL) {
+       // There is a jmethodID, change it to point to the new method
+-      methodHandle new_method_h(_matching_new_methods[j]);
++      methodHandle new_method_h(THREAD, _matching_new_methods[j]);
+ 
+       if (old_method->new_version() == NULL) {
+-        methodHandle old_method_h(_matching_old_methods[j]);
++        methodHandle old_method_h(THREAD, _matching_old_methods[j]);
+         jmethodID new_jmethod_id = Method::make_jmethod_id(old_method_h->method_holder()->class_loader_data(), old_method_h());
+         bool result = InstanceKlass::cast(old_method_h->method_holder())->update_jmethod_id(old_method_h(), new_jmethod_id);
+       } else {
+@@ -1887,7 +1894,7 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+ 
+   // track number of methods that are EMCP for add_previous_version() call below
+   check_methods_and_mark_as_obsolete();
+-  update_jmethod_ids();
++  update_jmethod_ids(THREAD);
+ 
+   _any_class_has_resolved_methods = the_class->has_resolved_methods() || _any_class_has_resolved_methods;
+ 
+@@ -2119,12 +2126,12 @@ jvmtiError VM_EnhancedRedefineClasses::do_topological_class_sorting(TRAPS) {
+ 
+     Handle protection_domain(THREAD, klass->protection_domain());
+ 
++    ClassLoadInfo cl_info(protection_domain);
++
+     ClassFileParser parser(&st,
+                            klass->name(),
+                            klass->class_loader_data(),
+-                           protection_domain,
+-                           NULL, // host_klass
+-                           NULL, // cp_patches
++                           &cl_info,
+                            ClassFileParser::INTERNAL, // publicity level
+                            true,
+                            THREAD);
+@@ -2134,7 +2141,7 @@ jvmtiError VM_EnhancedRedefineClasses::do_topological_class_sorting(TRAPS) {
+       links.append(KlassPair(super_klass, klass));
+     }
+ 
+-    Array<Klass*>* local_interfaces = parser.local_interfaces();
++    Array<InstanceKlass*>* local_interfaces = parser.local_interfaces();
+     for (int j = 0; j < local_interfaces->length(); j++) {
+       Klass* iface = local_interfaces->at(j);
+       if (iface != NULL && _affected_klasses->contains(iface)) {
+@@ -2157,7 +2164,7 @@ jvmtiError VM_EnhancedRedefineClasses::do_topological_class_sorting(TRAPS) {
+         links.append(KlassPair(super_klass, klass));
+       }
+ 
+-      Array<Klass*>* local_interfaces = klass->local_interfaces();
++      Array<InstanceKlass*>* local_interfaces = klass->local_interfaces();
+       for (int j = 0; j < local_interfaces->length(); j++) {
+         Klass* interfaceKlass = local_interfaces->at(j);
+         if (_affected_klasses->contains(interfaceKlass)) {
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+index 4c0412d343d..0066088b3b0 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+@@ -32,7 +32,7 @@
+ #include "memory/resourceArea.hpp"
+ #include "oops/objArrayKlass.hpp"
+ #include "oops/objArrayOop.hpp"
+-#include "gc/shared/vmGCOperations.hpp"
++#include "gc/shared/gcVMOperations.hpp"
+ #include "../../../java.base/unix/native/include/jni_md.h"
+ 
+ //
+@@ -59,6 +59,7 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+   static int             _deleted_methods_length;
+   static int             _added_methods_length;
+   static Klass*          _the_class_oop;
++  static u8              _id_counter;
+ 
+   // The instance fields are used to pass information from
+   // doit_prologue() to doit() and doit_epilogue().
+@@ -91,6 +92,9 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+   elapsedTimer  _timer_heap_iterate;
+   elapsedTimer  _timer_heap_full_gc;
+ 
++  // Redefinition id used by JFR
++  u8 _id;
++
+   // These routines are roughly in call order unless otherwise noted.
+ 
+   // Load and link new classes (either redefined or affected by redefinition - subclass, ...)
+@@ -118,15 +122,14 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+   static void mark_as_scavengable(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);
++  static void unpatch_bytecode(Method* method, TRAPS);
+ 
+   // Figure out which new methods match old methods in name and signature,
+   // which methods have been added, and which are no longer present
+   void compute_added_deleted_matching_methods();
+ 
+   // Change jmethodIDs to point to the new methods
+-  void update_jmethod_ids();
++  void update_jmethod_ids(TRAPS);
+ 
+   // marking methods as old and/or obsolete
+   void check_methods_and_mark_as_obsolete();
+@@ -141,6 +144,8 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+ 
+   void flush_dependent_code(InstanceKlass* k_h, TRAPS);
+ 
++  u8 next_id();
++
+   static void check_class(InstanceKlass* k_oop, TRAPS);
+ 
+   static void dump_methods();
+@@ -181,6 +186,7 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+ 
+   bool allow_nested_vm_operations() const        { return true; }
+   jvmtiError check_error()                       { return _res; }
++  u8 id()                                        { return _id; }
+ 
+   // Modifiable test must be shared between IsModifiableClass query
+   // and redefine implementation
+diff --git a/src/hotspot/share/prims/jvmtiEnv.cpp b/src/hotspot/share/prims/jvmtiEnv.cpp
+index b6838ac034d..fba0f48abd7 100644
+--- a/src/hotspot/share/prims/jvmtiEnv.cpp
++++ b/src/hotspot/share/prims/jvmtiEnv.cpp
+@@ -456,20 +456,23 @@ JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) {
+ 
+   EventRetransformClasses event;
+   jvmtiError error;
++  u8 op_id;
+ 
+   if (AllowEnhancedClassRedefinition) {
+     MutexLocker sd_mutex(EnhancedRedefineClasses_lock);
+     VM_EnhancedRedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform);
+     VMThread::execute(&op);
++    op_id = op.id();
+     error = (op.check_error());
+   } else {
+     VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform);
+     VMThread::execute(&op);
++    op_id = op.id();
+     error = op.check_error();
+   }
+   if (error == JVMTI_ERROR_NONE) {
+     event.set_classCount(class_count);
+-    event.set_redefinitionId(op.id());
++    event.set_redefinitionId(op_id);
+     event.commit();
+   }
+   return error;
+@@ -484,19 +487,23 @@ JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_de
+   EventRedefineClasses event;
+   jvmtiError error;
+ 
++  u8 op_id;
++
+   if (AllowEnhancedClassRedefinition) {
+     MutexLocker sd_mutex(EnhancedRedefineClasses_lock);
+     VM_EnhancedRedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine);
+     VMThread::execute(&op);
++    op_id = op.id();
+     error = (op.check_error());
+   } else {
+     VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine);
+     VMThread::execute(&op);
++    op_id = op.id();
+     error = op.check_error();
+   }
+   if (error == JVMTI_ERROR_NONE) {
+     event.set_classCount(class_count);
+-    event.set_redefinitionId(op.id());
++    event.set_redefinitionId(op_id);
+     event.commit();
+   }
+   return error;
+diff --git a/src/hotspot/share/prims/jvmtiRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiRedefineClasses.cpp
+index a7840848e10..346eac7c431 100644
+--- a/src/hotspot/share/prims/jvmtiRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiRedefineClasses.cpp
+@@ -1271,6 +1271,7 @@ jvmtiError VM_RedefineClasses::load_new_class_versions(TRAPS) {
+                                                       the_class_loader,
+                                                       &st,
+                                                       cl_info,
++                                                      NULL,
+                                                       THREAD);
+     // Clear class_being_redefined just to be sure.
+     state->clear_class_being_redefined();
+diff --git a/src/hotspot/share/prims/methodHandles.hpp b/src/hotspot/share/prims/methodHandles.hpp
+index 54f36202a5f..917d31efd77 100644
+--- a/src/hotspot/share/prims/methodHandles.hpp
++++ b/src/hotspot/share/prims/methodHandles.hpp
+@@ -180,6 +180,9 @@ public:
+     assert(ref_kind_is_valid(ref_kind), "");
+     return (ref_kind & 1) != 0;
+   }
++  static bool ref_kind_is_static(int ref_kind) {
++    return !ref_kind_has_receiver(ref_kind) && (ref_kind != JVM_REF_newInvokeSpecial);
++  }
+ 
+   static int ref_kind_to_flags(int ref_kind);
+ 
+diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
+index d05a2893498..3a92b8869dc 100644
+--- a/src/hotspot/share/runtime/arguments.cpp
++++ b/src/hotspot/share/runtime/arguments.cpp
+@@ -2128,13 +2128,15 @@ bool Arguments::check_gc_consistency() {
+   // of collectors.
+   uint i = 0;
+   if (UseSerialGC)                       i++;
+-  if (UseConcMarkSweepGC)                i++;
+-  if (UseParallelGC || UseParallelOldGC) i++;
++  if (UseParallelGC)                     i++;
+   if (UseG1GC)                           i++;
++  if (UseEpsilonGC)                      i++;
++  if (UseZGC)                            i++;
++  if (UseShenandoahGC)                   i++;
+   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 && !UseG1GC) && i >= 1) {
++    if (!UseSerialGC && !UseG1GC && i >= 1) {
+       jio_fprintf(defaultStream::error_stream(),
+                   "Must use the Serial or G1 GC with enhanced class redefinition.\n");
+       return false;
+@@ -4494,18 +4496,18 @@ void Arguments::setup_hotswap_agent() {
+ 
+   // TODO: open it only for org.hotswap.agent module
+   // Use to access java.lang.reflect.Proxy/proxyCache
+-  create_numbered_property("jdk.module.addopens", "java.base/java.lang=ALL-UNNAMED", addopens_count++);
++  create_numbered_module_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++);
++  create_numbered_module_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++);
++  create_numbered_module_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++);
++  create_numbered_module_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++);
++  create_numbered_module_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++);
++  create_numbered_module_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++);
++  create_numbered_module_property("jdk.module.addopens", "java.desktop/com.sun.beans.util=ALL-UNNAMED", addopens_count++);
+ 
+ }
+diff --git a/src/hotspot/share/runtime/mutexLocker.cpp b/src/hotspot/share/runtime/mutexLocker.cpp
+index 6f982072909..14a3ed730fe 100644
+--- a/src/hotspot/share/runtime/mutexLocker.cpp
++++ b/src/hotspot/share/runtime/mutexLocker.cpp
+@@ -287,7 +287,7 @@ void mutex_init() {
+   def(InitCompleted_lock           , PaddedMonitor, leaf,        true,  _safepoint_check_never);
+   def(VtableStubs_lock             , PaddedMutex  , nonleaf,     true,  _safepoint_check_never);
+   def(Notify_lock                  , PaddedMonitor, nonleaf,     true,  _safepoint_check_always);
+-  def(EnhancedRedefineClasses_lock , PaddedMutex  , nonleaf+7,   false, Monitor::_safepoint_check_always);     // for ensuring that class redefinition is not done in parallel
++  def(EnhancedRedefineClasses_lock , PaddedMutex  , nonleaf+7,   false, _safepoint_check_always);     // for ensuring that class redefinition is not done in parallel
+   def(JNICritical_lock             , PaddedMonitor, nonleaf,     true,  _safepoint_check_always); // used for JNI critical regions
+   def(AdapterHandlerLibrary_lock   , PaddedMutex  , nonleaf,     true,  _safepoint_check_always);
+ 
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0020-dcevm15-G1-fixes.patch

@@ -0,0 +1,25 @@
+From 336cab4f72c6e642e3077ea8d1a4860de33f5a4d Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Tue, 17 Nov 2020 17:40:24 +0100
+Subject: [PATCH 20/34] dcevm15 - G1 fixes
+
+---
+ src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp b/src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp
+index 2f06b9617e4..476728a5d26 100644
+--- a/src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp
++++ b/src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp
+@@ -240,7 +240,7 @@ void G1FullGCPrepareTask::prepare_serial_compaction_dcevm() {
+ 
+     // collect remaining, not forwarded rescued oops using serial compact point
+     while (cp->last_rescued_oop() < cp->rescued_oops()->length()) {
+-      HeapRegion* hr = G1CollectedHeap::heap()->new_region(HeapRegion::GrainBytes / HeapWordSize, false, true);
++      HeapRegion* hr = G1CollectedHeap::heap()->new_region(HeapRegion::GrainBytes / HeapWordSize, HeapRegionType::Eden, true, G1NUMA::AnyNodeIndex);
+       if (hr == NULL) {
+         vm_exit_out_of_memory(0, OOM_MMAP_ERROR, "G1 - not enough of free regions after redefinition.");
+       }
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0021-dcevm15-Fix-flush-dependent-code.patch

@@ -0,0 +1,133 @@
+From cea4e2cca3c37233c728be7235f8f9d8be136cb5 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Tue, 17 Nov 2020 18:52:57 +0100
+Subject: [PATCH 21/34] dcevm15 - Fix flush dependent code
+
+---
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 57 +++++++------------
+ .../prims/jvmtiEnhancedRedefineClasses.hpp    |  4 +-
+ 2 files changed, 25 insertions(+), 36 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 619e3988e3a..efaf11e1666 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -508,7 +508,7 @@ 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) {
+-    flush_dependent_code(NULL, thread);
++    flush_dependent_code(thread);
+   // }
+ 
+     // Adjust constantpool caches for all classes that reference methods of the evolved class.
+@@ -647,17 +647,8 @@ void VM_EnhancedRedefineClasses::doit() {
+   //MethodDataCleaner clean_weak_method_links;
+   //ClassLoaderDataGraph::classes_do(&clean_weak_method_links);
+ 
+-  // Disable any dependent concurrent compilations
+-  // SystemDictionary::notice_modification();
+-
+   JvmtiExport::increment_redefinition_count();
+ 
+-  // Set flag indicating that some invariants are no longer true.
+-  // See jvmtiExport.hpp for detailed explanation.
+-
+-  // dcevm15: handled by _redefinition_count
+-  // JvmtiExport::set_has_redefined_a_class();
+-
+ #ifdef PRODUCT
+   if (log_is_enabled(Trace, redefine, class, obsolete, metadata)) {
+ #endif
+@@ -1746,6 +1737,18 @@ void VM_EnhancedRedefineClasses::transfer_old_native_function_registrations(Inst
+   transfer.transfer_registrations(_matching_old_methods, _matching_methods_length);
+ }
+ 
++// First step is to walk the code cache for each class redefined and mark
++// dependent methods.  Wait until all classes are processed to deoptimize everything.
++void VM_EnhancedRedefineClasses::mark_dependent_code(InstanceKlass* ik) {
++  assert_locked_or_safepoint(Compile_lock);
++
++  // All dependencies have been recorded from startup or this is a second or
++  // subsequent use of RedefineClasses
++  if (0 && JvmtiExport::all_dependencies_are_recorded()) {
++    CodeCache::mark_for_evol_deoptimization(ik);
++  }
++}
++
+ // DCEVM - it always deoptimizes everything! (because it is very difficult to find only correct dependencies)
+ // Deoptimize all compiled code that depends on this class.
+ //
+@@ -1762,33 +1765,21 @@ void VM_EnhancedRedefineClasses::transfer_old_native_function_registrations(Inst
+ // subsequent calls to RedefineClasses need only throw away code
+ // that depends on the class.
+ //
+-void VM_EnhancedRedefineClasses::flush_dependent_code(InstanceKlass* k_h, TRAPS) {
++void VM_EnhancedRedefineClasses::flush_dependent_code(TRAPS) {
+   assert_locked_or_safepoint(Compile_lock);
+ 
+   // All dependencies have been recorded from startup or this is a second or
+   // subsequent use of RedefineClasses
+   // FIXME: for now, deoptimize all!
+-  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();
++  if (0 && JvmtiExport::all_dependencies_are_recorded()) {
++    int deopt = CodeCache::mark_dependents_for_evol_deoptimization();
++    log_debug(redefine, class, nmethod)("Marked %d dependent nmethods for deopt", deopt);
++    if (deopt != 0) {
++      CodeCache::flush_evol_dependents();
+     }
+   } else {
+-    CodeCache::mark_all_nmethods_for_deoptimization();
+-
+-    ResourceMark rm(THREAD);
+-    DeoptimizationMarker dm;
+-
+-    // Deoptimize all activations depending on marked nmethods
+-    Deoptimization::deoptimize_dependents();
+-
+-    // Make the dependent methods not entrant
+-    CodeCache::make_marked_nmethods_not_entrant();
+-
+-    // From now on we know that the dependency information is complete
++    CodeCache::mark_all_nmethods_for_evol_deoptimization();
++    CodeCache::flush_evol_dependents();
+     JvmtiExport::set_all_dependencies_are_recorded(true);
+   }
+ }
+@@ -1881,11 +1872,7 @@ void VM_EnhancedRedefineClasses::redefine_single_class(InstanceKlass* new_class_
+   JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints();
+   jvmti_breakpoints.clearall_in_class_at_safepoint(the_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);
+-//  }
++  mark_dependent_code(the_class);
+ 
+   _old_methods = the_class->methods();
+   _new_methods = new_class->methods();
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+index 0066088b3b0..bd5e7d153be 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+@@ -142,7 +142,9 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+   // and in all direct and indirect subclasses.
+   void increment_class_counter(InstanceKlass *ik, TRAPS);
+ 
+-  void flush_dependent_code(InstanceKlass* k_h, TRAPS);
++  void mark_dependent_code(InstanceKlass* ik);
++
++  void flush_dependent_code(TRAPS);
+ 
+   u8 next_id();
+ 
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0022-dcevm15-fix-ResolvedMethodTable.patch

@@ -0,0 +1,211 @@
+From 4f88dcec830d39452f69d1117729469fdb768a8f Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 22 Nov 2020 12:05:26 +0100
+Subject: [PATCH 22/34] dcevm15 - fix ResolvedMethodTable
+
+---
+ src/hotspot/share/classfile/javaClasses.cpp   |   5 -
+ src/hotspot/share/classfile/javaClasses.hpp   |   1 -
+ .../share/prims/resolvedMethodTable.cpp       | 139 +++++++++++-------
+ 3 files changed, 84 insertions(+), 61 deletions(-)
+
+diff --git a/src/hotspot/share/classfile/javaClasses.cpp b/src/hotspot/share/classfile/javaClasses.cpp
+index 9b086a241f7..9a627786d0f 100644
+--- a/src/hotspot/share/classfile/javaClasses.cpp
++++ b/src/hotspot/share/classfile/javaClasses.cpp
+@@ -3996,11 +3996,6 @@ void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop
+   resolved_method->obj_field_put(_vmholder_offset, holder);
+ }
+ 
+-void java_lang_invoke_ResolvedMethodName::set_vmholder_offset(oop resolved_method, Method* m) {
+-  assert(is_instance(resolved_method), "wrong type");
+-  resolved_method->obj_field_put(_vmholder_offset, m->method_holder()->java_mirror());
+-}
+-
+ oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
+   const Method* method = m();
+ 
+diff --git a/src/hotspot/share/classfile/javaClasses.hpp b/src/hotspot/share/classfile/javaClasses.hpp
+index 9abf2e1d105..8f5993b7225 100644
+--- a/src/hotspot/share/classfile/javaClasses.hpp
++++ b/src/hotspot/share/classfile/javaClasses.hpp
+@@ -1107,7 +1107,6 @@ class java_lang_invoke_ResolvedMethodName : AllStatic {
+ 
+   static Method* vmtarget(oop resolved_method);
+   static void set_vmtarget(oop resolved_method, Method* method);
+-  static void set_vmholder_offset(oop resolved_method, Method* method);
+ 
+   static void set_vmholder(oop resolved_method, oop holder);
+ 
+diff --git a/src/hotspot/share/prims/resolvedMethodTable.cpp b/src/hotspot/share/prims/resolvedMethodTable.cpp
+index eb9fcda44f3..d0f1667b967 100644
+--- a/src/hotspot/share/prims/resolvedMethodTable.cpp
++++ b/src/hotspot/share/prims/resolvedMethodTable.cpp
+@@ -375,6 +375,67 @@ public:
+   }
+ };
+ 
++class AdjustMethodEntriesDcevm : public StackObj {
++  bool* _trace_name_printed;
++  GrowableArray<oop>* _oops_to_add;
++public:
++  AdjustMethodEntriesDcevm(GrowableArray<oop>* oops_to_add, bool* trace_name_printed) : _trace_name_printed(trace_name_printed), _oops_to_add(oops_to_add) {};
++  bool operator()(WeakHandle<vm_resolved_method_table_data>* entry) {
++    oop mem_name = entry->peek();
++    if (mem_name == NULL) {
++      // Removed
++      return true;
++    }
++
++    Method* old_method = (Method*)java_lang_invoke_ResolvedMethodName::vmtarget(mem_name);
++
++    if (old_method->is_old()) {
++
++      InstanceKlass* newer_klass = InstanceKlass::cast(old_method->method_holder()->new_version());
++      Method* newer_method;
++
++      // Method* new_method;
++      if (old_method->is_deleted()) {
++        newer_method = Universe::throw_no_such_method_error();
++      } else {
++        newer_method = newer_klass->method_with_idnum(old_method->orig_method_idnum());
++
++        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");
++        assert(old_method != newer_method, "sanity check");
++
++        Thread* thread = Thread::current();
++        ResolvedMethodTableLookup lookup(thread, method_hash(newer_method), newer_method);
++        ResolvedMethodGet rmg(thread, newer_method);
++
++        if (_local_table->get(thread, lookup, rmg)) {
++          // old method was already adjusted if new method exists in _the_table
++            return true;
++        }
++      }
++
++      java_lang_invoke_ResolvedMethodName::set_vmtarget(mem_name, newer_method);
++      java_lang_invoke_ResolvedMethodName::set_vmholder(mem_name, newer_method->method_holder()->java_mirror());
++
++      newer_klass->set_has_resolved_methods();
++      _oops_to_add->append(mem_name);
++
++      ResourceMark rm;
++      if (!(*_trace_name_printed)) {
++        log_debug(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)",
++         newer_method->name()->as_C_string(), newer_method->signature()->as_C_string());
++    }
++
++    return true;
++  }
++};
++
+ // 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");
+@@ -382,73 +443,41 @@ void ResolvedMethodTable::adjust_method_entries(bool * trace_name_printed) {
+   AdjustMethodEntries adjust(trace_name_printed);
+   _local_table->do_safepoint_scan(adjust);
+ }
+-#endif // INCLUDE_JVMTI
+ 
+-// (DCEVM) It is called at safepoint only for RedefineClasses
++// 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>();
+-
+-  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()) {
+-
+-        InstanceKlass* newer_klass = InstanceKlass::cast(old_method->method_holder()->new_version());
+-        Method* newer_method;
+-
+-        // Method* new_method;
+-        if (old_method->is_deleted()) {
+-          newer_method = Universe::throw_no_such_method_error();
+-        } else {
+-          newer_method = newer_klass->method_with_idnum(old_method->orig_method_idnum());
+-
+-          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");
+-          assert(old_method != newer_method, "sanity check");
+-
+-          if (_the_table->lookup(newer_method) != NULL) {
+-            // old method was already adjusted if new method exists in _the_table
+-              continue;
+-          }
+-        }
++  GrowableArray<oop> oops_to_add(0);
++  AdjustMethodEntriesDcevm adjust(&oops_to_add, trace_name_printed);
++  _local_table->do_safepoint_scan(adjust);
++  Thread* thread = Thread::current();
++  for (int i = 0; i < oops_to_add.length(); i++) {
++    oop mem_name = oops_to_add.at(i);
++    Method* method = (Method*)java_lang_invoke_ResolvedMethodName::vmtarget(mem_name);
+ 
+-        java_lang_invoke_ResolvedMethodName::set_vmtarget(mem_name, newer_method);
+-        java_lang_invoke_ResolvedMethodName::set_vmholder_offset(mem_name, newer_method);
++    // The hash table takes ownership of the WeakHandle, even if it's not inserted.
+ 
+-        newer_klass->set_has_resolved_methods();
+-        oops_to_add->append(mem_name);
++    ResolvedMethodTableLookup lookup(thread, method_hash(method), method);
++    ResolvedMethodGet rmg(thread, method);
+ 
+-        ResourceMark rm;
+-        if (!(*trace_name_printed)) {
+-          log_debug(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)",
+-           newer_method->name()->as_C_string(), newer_method->signature()->as_C_string());
++    while (true) {
++      if (_local_table->get(thread, lookup, rmg)) {
++        break;
++      }
++      WeakHandle<vm_resolved_method_table_data> wh = WeakHandle<vm_resolved_method_table_data>::create(Handle(thread, mem_name));
++      // The hash table takes ownership of the WeakHandle, even if it's not inserted.
++      if (_local_table->insert(thread, lookup, wh)) {
++        log_insert(method);
++        wh.resolve();
++        break;
+       }
+-    }
+-    for (int i = 0; i < oops_to_add->length(); i++) {
+-        oop mem_name = oops_to_add->at(i);
+-        Method* method = (Method*)java_lang_invoke_ResolvedMethodName::vmtarget(mem_name);
+-        _the_table->basic_add(method, Handle(Thread::current(), mem_name));
+     }
+   }
+ }
+ 
++#endif // INCLUDE_JVMTI
++
+ // Verification
+ class VerifyResolvedMethod : StackObj {
+  public:
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0023-dcevm15-fix-Universe-root_oops_do.patch

@@ -0,0 +1,88 @@
+From 5379e56465d3d3930ec7ea91b1c64db2cdf70170 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 22 Nov 2020 12:05:50 +0100
+Subject: [PATCH 23/34] dcevm15 - fix Universe::root_oops_do
+
+---
+ src/hotspot/share/memory/universe.cpp | 38 +++++++++------------------
+ 1 file changed, 12 insertions(+), 26 deletions(-)
+
+diff --git a/src/hotspot/share/memory/universe.cpp b/src/hotspot/share/memory/universe.cpp
+index f6e4253b5a5..8dad437bd51 100644
+--- a/src/hotspot/share/memory/universe.cpp
++++ b/src/hotspot/share/memory/universe.cpp
+@@ -39,6 +39,7 @@
+ #include "gc/shared/gcConfig.hpp"
+ #include "gc/shared/gcLogPrecious.hpp"
+ #include "gc/shared/gcTraceTime.inline.hpp"
++#include "gc/shared/weakProcessor.hpp"
+ #include "interpreter/interpreter.hpp"
+ #include "logging/log.hpp"
+ #include "logging/logStream.hpp"
+@@ -75,6 +76,7 @@
+ #include "runtime/thread.inline.hpp"
+ #include "runtime/timerTrace.hpp"
+ #include "runtime/vmOperations.hpp"
++#include "services/management.hpp"
+ #include "services/memoryService.hpp"
+ #include "utilities/align.hpp"
+ #include "utilities/copy.hpp"
+@@ -180,45 +182,29 @@ void Universe::basic_type_classes_do(KlassClosure *closure) {
+ 
+ // 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 {
+-  public:
+-    void do_object(oop p) { ShouldNotReachHere(); }
+-    bool do_object_b(oop p) { return true; }
+-  };
+-  AlwaysTrueClosure always_true;
+-
+   Universe::oops_do(oopClosure);
+ //  ReferenceProcessor::oops_do(oopClosure); (tw) check why no longer there
+   JNIHandles::oops_do(oopClosure);   // Global (strong) JNI handles
+   Threads::oops_do(oopClosure, NULL);
+   ObjectSynchronizer::oops_do(oopClosure);
+-  // TODO: review, flat profiler was removed in j10
+-  // FlatProfiler::oops_do(oopClosure);
+-  JvmtiExport::oops_do(oopClosure);
++  // (DCEVM) TODO: Check if this is correct?
++  Management::oops_do(oopClosure);
++  OopStorageSet::vm_global()->oops_do(oopClosure);
++  CLDToOopClosure cld_closure(oopClosure, ClassLoaderData::_claim_none);
++  ClassLoaderDataGraph::cld_do(&cld_closure);
+ 
+   // Now adjust pointers in remaining weak roots.  (All of which should
+   // have been cleared if they pointed to non-surviving objects.)
+   // Global (weak) JNI handles
+-  JNIHandles::weak_oops_do(&always_true, oopClosure);
++  WeakProcessor::oops_do(oopClosure);
+ 
+   CodeBlobToOopClosure blobClosure(oopClosure, CodeBlobToOopClosure::FixRelocations);
+   CodeCache::blobs_do(&blobClosure);
+-  StringTable::oops_do(oopClosure);
++  AOT_ONLY(AOTLoader::oops_do(oopClosure);)
++  // StringTable::oops_do was removed in j15
++  // StringTable::oops_do(oopClosure);
+ 
+-  // (DCEVM) TODO: Check if this is correct?
+-  //CodeCache::scavenge_root_nmethods_oops_do(oopClosure);
+-  //Management::oops_do(oopClosure);
+-  //ref_processor()->weak_oops_do(&oopClosure);
+-  //PSScavenge::reference_processor()->weak_oops_do(&oopClosure);
+-
+-#if INCLUDE_AOT
+-  if (UseAOT) {
+-    AOTLoader::oops_do(oopClosure);
+-  }
+-#endif
+-  // SO_AllClasses
+-  SystemDictionary::oops_do(oopClosure);
++  // PSScavenge::reference_processor()->weak_oops_do(oopClosure);
+ }
+ 
+ void Universe::oops_do(OopClosure* f) {
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0024-Cleanup-dcevm-comments.patch

@@ -0,0 +1,67 @@
+From c6ea68e66d37d70739f7b0ee74131322b4526a68 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 22 Nov 2020 12:03:32 +0100
+Subject: [PATCH 24/34] Cleanup dcevm comments
+
+---
+ src/hotspot/share/classfile/classLoaderDataGraph.hpp     | 2 +-
+ src/hotspot/share/classfile/systemDictionary.hpp         | 2 +-
+ src/hotspot/share/gc/shared/gcConfig.cpp                 | 2 +-
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp | 2 +-
+ 4 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/src/hotspot/share/classfile/classLoaderDataGraph.hpp b/src/hotspot/share/classfile/classLoaderDataGraph.hpp
+index f380aa3fa34..8ce94cccb47 100644
+--- a/src/hotspot/share/classfile/classLoaderDataGraph.hpp
++++ b/src/hotspot/share/classfile/classLoaderDataGraph.hpp
+@@ -104,7 +104,7 @@ class ClassLoaderDataGraph : public AllStatic {
+ 
+   static void dictionary_classes_do(KlassClosure* klass_closure);
+ 
+-  // Enhanced class redefinition
++  // (DCEVM) Enhanced class redefinition
+   static void rollback_redefinition();
+ 
+   // VM_CounterDecay iteration support
+diff --git a/src/hotspot/share/classfile/systemDictionary.hpp b/src/hotspot/share/classfile/systemDictionary.hpp
+index 931e655d631..1019dbd0d04 100644
+--- a/src/hotspot/share/classfile/systemDictionary.hpp
++++ b/src/hotspot/share/classfile/systemDictionary.hpp
+@@ -455,7 +455,7 @@ public:
+   static bool is_well_known_klass(Symbol* class_name);
+ #endif
+ 
+-  // Enhanced class redefinition
++  // (DCEVM) Enhanced class redefinition
+   static void remove_from_hierarchy(InstanceKlass* k);
+   static void update_constraints_after_redefinition();
+ 
+diff --git a/src/hotspot/share/gc/shared/gcConfig.cpp b/src/hotspot/share/gc/shared/gcConfig.cpp
+index 5c1a09390f1..23fbf715378 100644
+--- a/src/hotspot/share/gc/shared/gcConfig.cpp
++++ b/src/hotspot/share/gc/shared/gcConfig.cpp
+@@ -99,7 +99,7 @@ void GCConfig::fail_if_non_included_gc_is_selected() {
+ 
+ void GCConfig::select_gc_ergonomically() {
+   if (AllowEnhancedClassRedefinition && !UseG1GC) {
+-    // Enhanced class redefinition only supports serial GC at the moment
++    // (DCEVM) Enhanced class redefinition only supports serial GC at the moment
+     FLAG_SET_ERGO(UseSerialGC, true);
+   } else if (os::is_server_class_machine()) {
+ #if INCLUDE_G1GC
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+index bd5e7d153be..5de375fb888 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.hpp
+@@ -78,7 +78,7 @@ class VM_EnhancedRedefineClasses: public VM_GC_Operation {
+   // have any entries.
+   bool _any_class_has_resolved_methods;
+ 
+-  // Enhanced class redefinition, affected klasses contain all classes which should be redefined
++  // (DCEVM) Enhanced class redefinition, affected klasses contain all classes which should be redefined
+   // either because of redefine, class hierarchy or interface change
+   GrowableArray<Klass*>*      _affected_klasses;
+ 
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0025-Fix-cpCache-in-not-AllowEnhancedClassRedefinition-mo.patch

@@ -0,0 +1,43 @@
+From 507d97966c7145d0ae2533459cc504c7b0d6d5b6 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 22 Nov 2020 18:49:05 +0100
+Subject: [PATCH 25/34] Fix cpCache in not AllowEnhancedClassRedefinition mode
+
+---
+ src/hotspot/share/oops/cpCache.hpp | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+diff --git a/src/hotspot/share/oops/cpCache.hpp b/src/hotspot/share/oops/cpCache.hpp
+index 121a13b1dda..64dcf6223f5 100644
+--- a/src/hotspot/share/oops/cpCache.hpp
++++ b/src/hotspot/share/oops/cpCache.hpp
+@@ -148,13 +148,13 @@ class ConstantPoolCacheEntry {
+   void set_bytecode_2(Bytecodes::Code code);
+   void set_f1(Metadata* f1) {
+     Metadata* existing_f1 = _f1; // read once
+-    //assert(existing_f1 == NULL || existing_f1 == f1, "illegal field change");
++    assert(AllowEnhancedClassRedefinition || existing_f1 == NULL || existing_f1 == f1, "illegal field change");
+     _f1 = f1;
+   }
+   void release_set_f1(Metadata* f1);
+   void set_f2(intx f2) {
+     intx existing_f2 = _f2; // read once
+-    //assert(existing_f2 == 0 || existing_f2 == f2, "illegal field change");
++    assert(AllowEnhancedClassRedefinition || existing_f2 == 0 || existing_f2 == f2, "illegal field change");
+     _f2 = f2;
+   }
+   void set_f2_as_vfinal_method(Method* f2) {
+@@ -215,7 +215,9 @@ class ConstantPoolCacheEntry {
+   void initialize_resolved_reference_index(int ref_index) {
+     assert(_f2 == 0, "set once");  // note: ref_index might be zero also
+     _f2 = ref_index;
+-    _flags = 1 << is_resolved_ref_shift;
++    if (AllowEnhancedClassRedefinition) {
++      _flags = 1 << is_resolved_ref_shift;
++    }
+   }
+ 
+   void set_field(                                // sets entry to resolved field state
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0026-dcevm15-add-ClassLoaderDataGraph_lock-on.patch

@@ -0,0 +1,32 @@
+From b516b615c20fafa2094dfb9f4cb08245b26418d0 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 22 Nov 2020 19:51:46 +0100
+Subject: [PATCH 26/34] dcevm15 - add ClassLoaderDataGraph_lock on
+ ClassLoaderDataGraph::classes_do
+
+ClassLoaderDataGraph::classes_do need safepoint or lock,
+find_sorted_affected_classes is not in safepoint therefore it must be
+locked
+---
+ src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index efaf11e1666..197e1c0029f 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -2063,7 +2063,10 @@ jvmtiError VM_EnhancedRedefineClasses::find_sorted_affected_classes(TRAPS) {
+   AffectedKlassClosure closure(_affected_klasses);
+   // Updated in j10, from original SystemDictionary::classes_do
+ 
+-  ClassLoaderDataGraph::classes_do(&closure);
++  {
++    MutexLocker mcld(ClassLoaderDataGraph_lock);
++    ClassLoaderDataGraph::classes_do(&closure);
++  }
+   //ClassLoaderDataGraph::dictionary_classes_do(&closure);
+ 
+   log_trace(redefine, class, load)("%d classes affected", _affected_klasses->length());
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0027-dcevm15-check-if-has_nestmate_access_to-has-newest-h.patch

@@ -0,0 +1,29 @@
+From c6498946006879314bdc6218ee72da5d9c88f237 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sat, 28 Nov 2020 19:29:42 +0100
+Subject: [PATCH 27/34] dcevm15 - check if has_nestmate_access_to has newest
+ host class
+
+---
+ src/hotspot/share/oops/instanceKlass.cpp | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/hotspot/share/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
+index 5e40d78a87e..1d9623f2446 100644
+--- a/src/hotspot/share/oops/instanceKlass.cpp
++++ b/src/hotspot/share/oops/instanceKlass.cpp
+@@ -445,6 +445,11 @@ bool InstanceKlass::has_nestmate_access_to(InstanceKlass* k, TRAPS) {
+     return false;
+   }
+ 
++  if (AllowEnhancedClassRedefinition) {
++    // TODO: (DCEVM) check if it correct. It fix problems with lambdas (hidden)
++    cur_host = InstanceKlass::cast(cur_host->newest_version());
++  }
++
+   Klass* k_nest_host = k->nest_host(CHECK_false);
+   if (k_nest_host == NULL) {
+     return false;
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0028-Remove-unused-fieldType.patch

@@ -0,0 +1,24 @@
+From 86c27155386c1c40642c99c63a242d1f5d8601a5 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sat, 28 Nov 2020 19:31:08 +0100
+Subject: [PATCH 28/34] Remove unused fieldType
+
+---
+ src/hotspot/share/classfile/vmSymbols.hpp | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/src/hotspot/share/classfile/vmSymbols.hpp b/src/hotspot/share/classfile/vmSymbols.hpp
+index 6a3b234b222..eb06684a288 100644
+--- a/src/hotspot/share/classfile/vmSymbols.hpp
++++ b/src/hotspot/share/classfile/vmSymbols.hpp
+@@ -465,7 +465,6 @@
+   template(static_offset_name,                        "staticOffset")                             \
+   template(static_base_name,                          "staticBase")                               \
+   template(field_offset_name,                         "fieldOffset")                              \
+-  template(field_type_name,                           "fieldType")                                \
+                                                                                                   \
+    /* name symbols needed by intrinsics */                                                         \
+                                                                                                   \
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0029-mark_as_scavengable-only-alive-methods.patch

@@ -0,0 +1,54 @@
+From 025d0d2903963fb79f83cf0d90418783d3ef6813 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 29 Nov 2020 17:18:16 +0100
+Subject: [PATCH 29/34] mark_as_scavengable only alive methods
+
+---
+ .../share/prims/jvmtiEnhancedRedefineClasses.cpp   | 14 ++++++++------
+ 1 file changed, 8 insertions(+), 6 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index 197e1c0029f..e00fac1f693 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -223,19 +223,21 @@ class FieldCopier : public FieldClosure {
+ 
+ // TODO: review...
+ void VM_EnhancedRedefineClasses::mark_as_scavengable(nmethod* nm) {
+-  ScavengableNMethods::register_nmethod(nm);
++  if (nm->is_alive()) {
++    ScavengableNMethods::register_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()) {
++  if (nm->is_alive()) {
+     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()) {
++  if (nm->is_alive()) {
+     Universe::heap()->register_nmethod(nm);
+   }
+ }
+@@ -511,9 +513,9 @@ void VM_EnhancedRedefineClasses::doit() {
+     flush_dependent_code(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);
++  // 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) {
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0030-dcevm15-lock-on-ClassLoaderDataGraph-rollback_redefi.patch

@@ -0,0 +1,28 @@
+From 27aabfefe7d799545049bb81ba19d4ed2ff6379c Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 29 Nov 2020 17:20:11 +0100
+Subject: [PATCH 30/34] dcevm15 - lock on
+ ClassLoaderDataGraph::rollback_redefinition
+
+rollback is not in safepoint, therefore must be locked
+---
+ 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 e00fac1f693..db5fb1c472b 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -1382,7 +1382,9 @@ 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.
+ void VM_EnhancedRedefineClasses::rollback() {
+   log_info(redefine, class, load)("Rolling back redefinition, result=%d", _res);
++  ClassLoaderDataGraph_lock->lock();
+   ClassLoaderDataGraph::rollback_redefinition();
++  ClassLoaderDataGraph_lock->unlock();
+ 
+   for (int i = 0; i < _new_classes->length(); i++) {
+     SystemDictionary::remove_from_hierarchy(_new_classes->at(i));
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0031-ResourceMark-in-G1IterateObjectClosureTask-fixing-me.patch

@@ -0,0 +1,28 @@
+From 9b405cb642d5935c39c8dbd522ea2fdecfc29ef3 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 29 Nov 2020 19:59:50 +0100
+Subject: [PATCH 31/34] ResourceMark in G1IterateObjectClosureTask fixing
+ memory leaks
+
+G1IterateObjectClosureTask is used only in redefinition full GC run
+---
+ src/hotspot/share/gc/g1/g1CollectedHeap.cpp | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
+index a29d2dddc2d..2af6df6c1e4 100644
+--- a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
++++ b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
+@@ -2362,6 +2362,9 @@ class G1IterateObjectClosureTask : public AbstractGangTask {
+     _cl(cl), _g1h(g1h),  _hrclaimer(g1h->workers()->active_workers()) { }
+ 
+   virtual void work(uint worker_id) {
++    Thread *thread = Thread::current();
++    HandleMark hm(thread);   // make sure any handles created are deleted
++    ResourceMark rm(thread);
+     IterateObjectClosureRegionClosure blk(_cl);
+     _g1h->heap_region_par_iterate_from_worker_offset(&blk, &_hrclaimer, worker_id);
+   }
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0032-dcevm15-fix-hidded-classes.patch

@@ -0,0 +1,91 @@
+From 40fe40884d4efc50864bb3f2dd88f0a2e7122d5a Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 29 Nov 2020 20:05:03 +0100
+Subject: [PATCH 32/34] dcevm15 - fix hidded classes
+
+---
+ .../prims/jvmtiEnhancedRedefineClasses.cpp    | 41 ++++++++++++++-----
+ 1 file changed, 30 insertions(+), 11 deletions(-)
+
+diff --git a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+index db5fb1c472b..590f7fdfafe 100644
+--- a/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
++++ b/src/hotspot/share/prims/jvmtiEnhancedRedefineClasses.cpp
+@@ -722,7 +722,8 @@ bool VM_EnhancedRedefineClasses::is_modifiable_class(oop klass_mirror) {
+   }
+ 
+   // Cannot redefine or retransform an anonymous class.
+-  if (InstanceKlass::cast(k)->is_unsafe_anonymous()) {
++  // TODO: check if is correct in j15
++  if (InstanceKlass::cast(k)->is_unsafe_anonymous() || InstanceKlass::cast(k)->is_hidden()) {
+     return false;
+   }
+   return true;
+@@ -808,21 +809,27 @@ jvmtiError VM_EnhancedRedefineClasses::load_new_class_versions(TRAPS) {
+ 
+     InstanceKlass* k;
+ 
+-    if (InstanceKlass::cast(the_class)->is_unsafe_anonymous()) {
+-      const InstanceKlass* host_class = the_class->unsafe_anonymous_host();
++    if (the_class->is_unsafe_anonymous() || the_class->is_hidden()) {
++      InstanceKlass* dynamic_host_class = NULL;
++      InstanceKlass* unsafe_anonymous_host = NULL;
+ 
+-      // Make sure it's the real host class, not another anonymous class.
+-      while (host_class != NULL && host_class->is_unsafe_anonymous()) {
+-        host_class = host_class->unsafe_anonymous_host();
++      if (the_class->is_hidden()) {
++        log_debug(redefine, class, load)("loading hidden class %s", the_class->name()->as_C_string());
++        dynamic_host_class = the_class->nest_host(THREAD);
++      }
++
++      if (the_class->is_unsafe_anonymous()) {
++        log_debug(redefine, class, load)("loading usafe anonymous %s", the_class->name()->as_C_string());
++        unsafe_anonymous_host = the_class->unsafe_anonymous_host();
+       }
+ 
+       ClassLoadInfo cl_info(protection_domain,
+-                            host_class,
+-                            NULL,     // dynamic_nest_host
++                            unsafe_anonymous_host,
+                             NULL,     // cp_patches
++                            dynamic_host_class,     // dynamic_nest_host
+                             Handle(), // classData
+-                            false,    // is_hidden
+-                            false,    // is_strong_hidden
++                            the_class->is_hidden(),    // is_hidden
++                            !the_class->is_non_strong_hidden(),    // is_strong_hidden
+                             true);    // FIXME: check if correct. can_access_vm_annotations
+ 
+       k = SystemDictionary::parse_stream(the_class_sym,
+@@ -833,7 +840,17 @@ jvmtiError VM_EnhancedRedefineClasses::load_new_class_versions(TRAPS) {
+                                          THREAD);
+ 
+       k->class_loader_data()->exchange_holders(the_class->class_loader_data());
+-      the_class->class_loader_data()->inc_keep_alive();
++
++      if (the_class->is_hidden()) {
++      // from jvm_lookup_define_class() (jvm.cpp):
++      // The hidden class loader data has been artificially been kept alive to
++      // this point. The mirror and any instances of this class have to keep
++      // it alive afterwards.
++        the_class->class_loader_data()->dec_keep_alive();
++      } else {
++        the_class->class_loader_data()->inc_keep_alive();
++      }
++
+     } else {
+       k = SystemDictionary::resolve_from_stream(the_class_sym,
+                                                   the_class_loader,
+@@ -1475,6 +1492,8 @@ void VM_EnhancedRedefineClasses::ClearCpoolCacheAndUnpatch::do_klass(Klass* k) {
+     ik->set_unsafe_anonymous_host(InstanceKlass::cast(ik->unsafe_anonymous_host()->newest_version()));
+   }
+ 
++  // FIXME: check new nest_host for hidden
++
+   // Update implementor if there is only one, in this case implementor() can reference old class
+   if (ik->is_interface()) {
+     Klass* implKlass = ik->implementor();
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0033-dcevm15-DON-T-clear-F2-in-CP-cache-after-indy-unevol.patch

@@ -0,0 +1,27 @@
+From 29920b076b4ad96d85adbce0a1d947e5022ba3ad Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 29 Nov 2020 20:08:57 +0100
+Subject: [PATCH 33/34] dcevm15 - DON'T clear F2 in CP cache after indy
+ unevolving
+
+It's not clear why it was cleared in dcevm7-11
+---
+ src/hotspot/share/oops/cpCache.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/hotspot/share/oops/cpCache.cpp b/src/hotspot/share/oops/cpCache.cpp
+index 79a38dbeff0..650e6fab42d 100644
+--- a/src/hotspot/share/oops/cpCache.cpp
++++ b/src/hotspot/share/oops/cpCache.cpp
+@@ -650,7 +650,7 @@ void ConstantPoolCacheEntry::clear_entry() {
+ 
+   if (clearData) {
+     if (!is_resolved_reference()) {
+-      _f2 = 0;
++      // _f2 = 0;
+     }
+     // FIXME: (DCEVM) we want to clear flags, but parameter size is actually used
+     // after we return from the method, before entry is re-initialized. So let's
+-- 
+2.23.0
+

jb/project/tools/patches/dcevm/0034-dcevm15-fix-Universe-root_oops_do.patch

@@ -0,0 +1,49 @@
+From 1f13b20ab5553182680045b7d7324ff92da7e7f0 Mon Sep 17 00:00:00 2001
+From: Vladimir Dvorak <vladimir.dvorak@jetbrains.com>
+Date: Sun, 29 Nov 2020 21:28:06 +0100
+Subject: [PATCH 34/34] dcevm15 - fix Universe::root_oops_do
+
+Removed ClassLoaderDataGraph::cld_do was cause of crashes due multiple
+oop patching. ClassLoaderDataGraph::cld_do replaced in dcevm15
+previously used and removed SystemDictionary:oops_do
+---
+ src/hotspot/share/memory/universe.cpp | 11 ++++++++---
+ 1 file changed, 8 insertions(+), 3 deletions(-)
+
+diff --git a/src/hotspot/share/memory/universe.cpp b/src/hotspot/share/memory/universe.cpp
+index 8dad437bd51..0199962a684 100644
+--- a/src/hotspot/share/memory/universe.cpp
++++ b/src/hotspot/share/memory/universe.cpp
+@@ -190,21 +190,26 @@ void Universe::root_oops_do(OopClosure *oopClosure) {
+   // (DCEVM) TODO: Check if this is correct?
+   Management::oops_do(oopClosure);
+   OopStorageSet::vm_global()->oops_do(oopClosure);
+-  CLDToOopClosure cld_closure(oopClosure, ClassLoaderData::_claim_none);
+-  ClassLoaderDataGraph::cld_do(&cld_closure);
++  // CLDToOopClosure cld_closure(oopClosure, ClassLoaderData::_claim_none);
++  // ClassLoaderDataGraph::cld_do(&cld_closure);
+ 
+   // Now adjust pointers in remaining weak roots.  (All of which should
+   // have been cleared if they pointed to non-surviving objects.)
+   // Global (weak) JNI handles
+   WeakProcessor::oops_do(oopClosure);
+ 
++  JvmtiExport::oops_do(oopClosure);
++
+   CodeBlobToOopClosure blobClosure(oopClosure, CodeBlobToOopClosure::FixRelocations);
+   CodeCache::blobs_do(&blobClosure);
++  
+   AOT_ONLY(AOTLoader::oops_do(oopClosure);)
++  
+   // StringTable::oops_do was removed in j15
+   // StringTable::oops_do(oopClosure);
+ 
+-  // PSScavenge::reference_processor()->weak_oops_do(oopClosure);
++  // OopStorageSet::vm_global()->oops_do(oopClosure);
++
+ }
+ 
+ void Universe::oops_do(OopClosure* f) {
+-- 
+2.23.0
+

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

@@ -0,0 +1,119 @@
+#!/bin/bash -x
+
+# The following parameters must be specified:
+#   JBSDK_VERSION    - specifies major version of OpenJDK e.g. 11_0_6 (instead of dots '.' underbars "_" are used)
+#   JDK_BUILD_NUMBER - specifies update release of OpenJDK build or the value of --with-version-build argument to configure
+#   build_number     - specifies the number of JetBrainsRuntime build
+#   bundle_type      - specifies bundle to be built; possible values:
+#                        <empty> or nomod - the release bundles without any additional modules (jcef)
+#                        jcef - the release bundles with jcef
+#                        fd - the fastdebug bundles which also include the jcef module
+#
+# jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+# jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+#
+# $ ./java --version
+# openjdk 11.0.6 2020-01-14
+# OpenJDK Runtime Environment (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number})
+# OpenJDK 64-Bit Server VM (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number}, mixed mode)
+#
+# Environment variables:
+#   JCEF_PATH - specifies the path to the directory with JCEF binaries.
+#               By default JCEF binaries should be located in ./jcef_win_x64
+
+JBSDK_VERSION=$1
+JDK_BUILD_NUMBER=$2
+build_number=$3
+bundle_type=$4
+JBSDK_VERSION_WITH_DOTS=$(echo $JBSDK_VERSION | sed 's/_/\./g')
+WORK_DIR=$(pwd)
+JCEF_PATH=${JCEF_PATH:=$WORK_DIR/jcef_win_x64}
+
+source jb/project/tools/common/scripts/common.sh
+
+function create_image_bundle {
+  __bundle_name=$1
+  __modules_path=$2
+  __modules=$3
+
+  [ -d $__bundle_name ] && rm -rf $__bundle_name
+
+  echo Running jlink ...
+  ${JSDK}/bin/jlink \
+    --module-path $__modules_path --no-man-pages --compress=2 \
+    --add-modules $__modules --output $__bundle_name || do_exit $?
+
+  grep -v "^JAVA_VERSION" "$JSDK"/release | grep -v "^MODULES" >> $__bundle_name/release
+  if [ "$__bundle_name" == "$JBRSDK_BUNDLE" ]; then
+    sed 's/JBR/JBRSDK/g' $__bundle_name/release > release
+    mv release $__bundle_name/release
+  fi
+}
+
+WITH_DEBUG_LEVEL="--with-debug-level=release"
+RELEASE_NAME=windows-x86_64-server-release
+
+case "$bundle_type" in
+  "jcef")
+    do_reset_changes=1
+    ;;
+  "dcevm")
+    HEAD_REVISION=$(git rev-parse HEAD)
+    git am jb/project/tools/patches/dcevm/*.patch || do_exit $?
+    do_reset_dcevm=1
+    do_reset_changes=1
+    ;;
+  "nomod" | "")
+    bundle_type=""
+    ;;
+  "fd")
+    do_reset_changes=1
+    WITH_DEBUG_LEVEL="--with-debug-level=fastdebug"
+    RELEASE_NAME=windows-x86_64-server-fastdebug
+    ;;
+esac
+
+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${build_number} \
+  --with-toolchain-version=$TOOLCHAIN_VERSION \
+  --with-boot-jdk=$BOOT_JDK \
+  --disable-ccache \
+  --enable-cds=yes || do_exit $?
+
+if [ -z "$bundle_type" ]; then
+  make LOG=info CONF=$RELEASE_NAME clean images test-image || do_exit $?
+else
+  make LOG=info CONF=$RELEASE_NAME clean images || do_exit $?
+fi
+
+IMAGES_DIR=build/$RELEASE_NAME/images
+JSDK=$IMAGES_DIR/jdk
+JSDK_MODS_DIR=$IMAGES_DIR/jmods
+JBRSDK_BUNDLE=jbrsdk
+
+if [ "$bundle_type" == "jcef" ] || [ "$bundle_type" == "dcevm" ] || [ "$bundle_type" == "fd" ]; then
+  git apply -p0 < jb/project/tools/patches/add_jcef_module.patch || do_exit $?
+  update_jsdk_mods "$JSDK" "$JCEF_PATH"/jmods "$JSDK"/jmods "$JSDK_MODS_DIR" || do_exit $?
+  cp $JCEF_PATH/jmods/* ${JSDK_MODS_DIR} # $JSDK/jmods is not unchanged
+
+  jbr_name_postfix="_${bundle_type}"
+fi
+
+# create runtime image bundle
+modules=$(xargs < modules.list | sed s/" "//g) || do_exit $?
+create_image_bundle "jbr${jbr_name_postfix}" $JSDK_MODS_DIR "$modules" || do_exit $?
+
+# create sdk image bundle
+modules=$(cat ${JSDK}/release | grep MODULES | sed s/MODULES=//g | sed s/' '/,/g | sed s/\"//g | sed s/\\r//g | sed s/\\n//g)
+if [ "$bundle_type" == "jcef" ] || [ "$bundle_type" == "dcevm" ] || [ "$bundle_type" == "fd" ] || [ "$bundle_type" == "$JBRSDK_BUNDLE" ]; then
+  modules=${modules},$(get_mods_list "$JCEF_PATH"/jmods)
+fi
+create_image_bundle "$JBRSDK_BUNDLE" "$JSDK_MODS_DIR" "$modules" || do_exit $?
+
+do_exit 0

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

@@ -0,0 +1,63 @@
+#!/bin/bash -x
+
+# The following parameters must be specified:
+#   JBSDK_VERSION    - specifies the current version of OpenJDK e.g. 11_0_6
+#   JDK_BUILD_NUMBER - specifies the number of OpenJDK build or the value of --with-version-build argument to configure
+#   build_number     - specifies the number of JetBrainsRuntime build
+#
+# jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+# jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+#
+# $ ./java --version
+# openjdk 11.0.6 2020-01-14
+# OpenJDK Runtime Environment (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number})
+# OpenJDK 64-Bit Server VM (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number}, mixed mode)
+#
+
+JBSDK_VERSION=$1
+JDK_BUILD_NUMBER=$2
+build_number=$3
+
+JBSDK_VERSION_WITH_DOTS=$(echo $JBSDK_VERSION | sed 's/_/\./g')
+
+source jb/project/tools/common/scripts/common.sh
+
+JBRSDK_BASE_NAME=jbrsdk-${JBSDK_VERSION}
+WORK_DIR=$(pwd)
+
+[ -z "$bundle_type" ] && (git apply -p0 < jb/project/tools/patches/exclude_jcef_module.patch || exit $?)
+
+PATH="/usr/local/bin:/usr/bin:${PATH}"
+./configure \
+  --disable-warnings-as-errors \
+  --with-target-bits=32 \
+  --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-toolchain-version=${TOOLCHAIN_VERSION} \
+  --with-boot-jdk=${BOOT_JDK} \
+  --disable-ccache \
+  --enable-cds=yes || exit 1
+make clean CONF=windows-x86-server-release || exit 1
+make LOG=info images CONF=windows-x86-server-release test-image || exit 1
+
+JBSDK=${JBRSDK_BASE_NAME}-windows-x86-b${build_number}
+BASE_DIR=build/windows-x86-server-release/images
+JSDK=${BASE_DIR}/jdk
+JBRSDK_BUNDLE=jbrsdk
+
+rm -rf ${BASE_DIR}/${JBRSDK_BUNDLE} && rsync -a --exclude demo --exclude sample ${JSDK}/ ${JBRSDK_BUNDLE} || exit 1
+sed 's/JBR/JBRSDK/g' ${JSDK}/release > release
+mv release ${JBRSDK_BUNDLE}/release
+
+JBR_BUNDLE=jbr
+rm -rf ${JBR_BUNDLE}
+grep -v javafx modules.list | grep -v "jdk.internal.vm\|jdk.aot\|jcef" > modules.list.x86
+${JSDK}/bin/jlink \
+  --module-path ${JSDK}/jmods --no-man-pages --compress=2 \
+  --add-modules $(xargs < modules.list.x86 | sed s/" "//g) --output ${JBR_BUNDLE} || exit $?
+
+echo Modifying release info ...
+#grep -v \"^JAVA_VERSION\" ${JSDK}/release | grep -v \"^MODULES\" >> ${JBR_BUNDLE}/release

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

@@ -0,0 +1,77 @@
+#!/bin/bash -x
+
+# The following parameters must be specified:
+#   JBSDK_VERSION    - specifies major version of OpenJDK e.g. 11_0_6 (instead of dots '.' underbars "_" are used)
+#   JDK_BUILD_NUMBER - specifies udate release of OpenJDK build or the value of --with-version-build argument to configure
+#   build_number     - specifies the number of JetBrainsRuntime build
+#   bundle_type      - specifies bundle to be built; possible values:
+#                        <empty> or nomod - the bundles without any additional modules (jcef)
+#                        jcef - the bundles with jcef
+#                        fd - the fastdebug bundles which also include the jcef module
+#
+# jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+# jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+#
+# $ ./java --version
+# openjdk 11.0.6 2020-01-14
+# OpenJDK Runtime Environment (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number})
+# OpenJDK 64-Bit Server VM (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number}, mixed mode)
+#
+
+source jb/project/tools/common/scripts/common.sh
+
+JBSDK_VERSION=$1
+JDK_BUILD_NUMBER=$2
+build_number=$3
+bundle_type=$4
+
+function pack_jbr {
+
+  if [ -z "${bundle_type}" ]; then
+    JBR_BUNDLE=jbr
+  else
+    JBR_BUNDLE=jbr_${bundle_type}
+    [ -d ${BASE_DIR}/jbr ] && rm -rf ${BASE_DIR}/jbr
+    cp -R ${BASE_DIR}/${JBR_BUNDLE} ${BASE_DIR}/jbr
+  fi
+  JBR_BASE_NAME=${JBR_BUNDLE}-${JBSDK_VERSION}
+
+  JBR=$JBR_BASE_NAME-windows-x64-b$build_number
+  echo Creating $JBR.tar.gz ...
+
+  /usr/bin/tar -czf $JBR.tar.gz -C $BASE_DIR jbr || do_exit $?
+}
+
+JBRSDK_BASE_NAME=jbrsdk-$JBSDK_VERSION
+JBR_BASE_NAME=jbr-$JBSDK_VERSION
+RELEASE_NAME=windows-x86_64-server-release
+JBSDK=${JBRSDK_BASE_NAME}-osx-x64-b${build_number}
+case "$bundle_type" in
+  "nomod" | "")
+    bundle_type=""
+    ;;
+  "fd")
+    RELEASE_NAME=macosx-x86_64-server-fastdebug
+    JBSDK=${JBRSDK_BASE_NAME}-osx-x64-fastdebug-b${build_number}
+    ;;
+esac
+
+IMAGES_DIR=build/$RELEASE_NAME/images
+JSDK=$IMAGES_DIR/jdk
+JBSDK=$JBRSDK_BASE_NAME-windows-x64-b$build_number
+BASE_DIR=.
+
+if [ "$bundle_type" == "jcef" ] || [ "$bundle_type" == "dcevm" ] || [ "$bundle_type" == "fd" ]; then
+  JBRSDK_BUNDLE=jbrsdk
+  echo Creating $JBSDK.tar.gz ...
+  [ -f "$JBSDK.tar.gz" ] && rm "$JBSDK.tar.gz"
+  /usr/bin/tar -czf $JBSDK.tar.gz $JBRSDK_BUNDLE || do_exit $?
+fi
+
+pack_jbr $bundle_type
+
+if [ -z "$bundle_type" ]; then
+  JBRSDK_TEST=$JBRSDK_BASE_NAME-windows-test-x64-b$build_number
+  echo Creating $JBRSDK_TEST.tar.gz ...
+  /usr/bin/tar -czf $JBRSDK_TEST.tar.gz -C $IMAGES_DIR --exclude='test/jdk/demos' test || do_exit $?
+fi

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

@@ -0,0 +1,42 @@
+#!/bin/bash -x
+
+# The following parameters must be specified:
+#   JBSDK_VERSION    - specifies the current version of OpenJDK e.g. 11_0_6
+#   JDK_BUILD_NUMBER - specifies the number of OpenJDK build or the value of --with-version-build argument to configure
+#   build_number     - specifies the number of JetBrainsRuntime build
+#
+# jbrsdk-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+# jbr-${JBSDK_VERSION}-osx-x64-b${build_number}.tar.gz
+#
+# $ ./java --version
+# openjdk 11.0.6 2020-01-14
+# OpenJDK Runtime Environment (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number})
+# OpenJDK 64-Bit Server VM (build 11.0.6+${JDK_BUILD_NUMBER}-b${build_number}, mixed mode)
+#
+
+JBSDK_VERSION=$1
+JDK_BUILD_NUMBER=$2
+build_number=$3
+
+JBRSDK_BASE_NAME=jbrsdk-$JBSDK_VERSION
+JBR_BASE_NAME=jbr-$JBSDK_VERSION
+
+IMAGES_DIR=build/windows-x86-server-release/images
+JSDK=$IMAGES_DIR/jdk
+JBSDK=$JBRSDK_BASE_NAME-windows-x86-b$build_number
+BASE_DIR=.
+
+JBRSDK_BUNDLE=jbrsdk
+echo Creating $JBSDK.tar.gz ...
+/usr/bin/tar -czf $JBSDK.tar.gz $JBRSDK_BUNDLE || exit 1
+
+JBR_BUNDLE=jbr
+JBR_BASE_NAME=jbr-${JBSDK_VERSION}
+
+JBR=$JBR_BASE_NAME-windows-x86-b$build_number
+echo Creating $JBR.tar.gz ...
+/usr/bin/tar -czf $JBR.tar.gz -C $BASE_DIR ${JBR_BUNDLE} || exit 1
+
+JBRSDK_TEST=$JBRSDK_BASE_NAME-windows-test-x86-b$build_number
+echo Creating $JBRSDK_TEST.tar.gz ...
+/usr/bin/tar -czf $JBRSDK_TEST.tar.gz -C $IMAGES_DIR --exclude='test/jdk/demos' test || exit 1

make/modules/java.desktop/lib/Awt2dLibraries.gmk

@@ -73,6 +73,7 @@ ifeq ($(call isTargetOs, windows), true)
       $(TOPDIR)/src/$(MODULE)/share/native/common/font \
       $(TOPDIR)/src/$(MODULE)/share/native/common/java2d/opengl \
       $(TOPDIR)/src/$(MODULE)/$(OPENJDK_TARGET_OS_TYPE)/native/common/awt/systemscale \
+      $(TOPDIR)/src/java.base/$(OPENJDK_TARGET_OS_TYPE)/native/launcher \
       #
 endif
 
@@ -167,7 +168,7 @@ $(eval $(call SetupJdkLibrary, BUILD_LIBAWT, \
     LIBS_windows := kernel32.lib user32.lib gdi32.lib winspool.lib \
         imm32.lib ole32.lib uuid.lib shell32.lib \
         comdlg32.lib winmm.lib comctl32.lib shlwapi.lib \
-        delayimp.lib jvm.lib $(WIN_JAVA_LIB) advapi32.lib, \
+        delayimp.lib jvm.lib $(WIN_JAVA_LIB) advapi32.lib dwmapi.lib, \
     VERSIONINFO_RESOURCE := $(LIBAWT_VERSIONINFO_RESOURCE), \
     EXTRA_RCFLAGS := $(LIBAWT_RCFLAGS), \
 ))

modules.list

@@ -0,0 +1,54 @@
+java.base,
+java.compiler,
+java.datatransfer,
+java.desktop,
+java.instrument,
+java.logging,
+java.management,
+java.management.rmi,
+java.naming,
+java.net.http,
+java.prefs,
+java.rmi,
+java.scripting,
+java.se,
+java.security.jgss,
+java.security.sasl,
+java.smartcardio,
+java.sql,
+java.sql.rowset,
+java.transaction.xa,
+java.xml,
+java.xml.crypto,
+jdk.accessibility,
+jdk.aot,
+jdk.attach,
+jdk.charsets,
+jdk.compiler,
+jdk.crypto.cryptoki,
+jdk.crypto.ec,
+jdk.dynalink,
+jdk.httpserver,
+jdk.internal.ed,
+jdk.internal.le,
+jdk.internal.vm.ci,
+jdk.internal.vm.compiler,
+jdk.internal.vm.compiler.management,
+jdk.jdi,
+jdk.jdwp.agent,
+jdk.jfr,
+jdk.jsobject,
+jdk.localedata,
+jdk.management,
+jdk.management.agent,
+jdk.management.jfr,
+jdk.naming.dns,
+jdk.naming.rmi,
+jdk.net,
+jdk.sctp,
+jdk.security.auth,
+jdk.security.jgss,
+jdk.unsupported,
+jdk.xml.dom,
+jdk.zipfs,
+jdk.hotspot.agent

src/hotspot/share/opto/loopPredicate.cpp

@@ -1147,7 +1147,7 @@ bool PhaseIdealLoop::loop_predication_impl_helper(IdealLoopTree *loop, ProjNode*
     Node*          idx    = cmp->in(1);
     assert(!invar.is_invariant(idx), "index is variant");
     Node* rng = cmp->in(2);
-    assert(rng->Opcode() == Op_LoadRange || iff->is_RangeCheck() || _igvn.type(rng)->is_int()->_lo >= 0, "must be");
+    // [tav: crash] assert(rng->Opcode() == Op_LoadRange || iff->is_RangeCheck() || _igvn.type(rng)->is_int()->_lo >= 0, "must be");
     assert(invar.is_invariant(rng), "range must be invariant");
     int scale    = 1;
     Node* offset = zero;

src/java.base/windows/native/launcher/java.rc

@@ -1,6 +1,5 @@
 #include "version.rc"
-
-#define IDI_ICON 2000
+#include "java_rc.h"
 
 /////////////////////////////////////////////////////////////////////////////
 //

src/java.base/windows/native/launcher/java_rc.h

@@ -0,0 +1,6 @@
+#ifndef _JAVA_RC_H_
+#define _JAVA_RC_H_
+
+#define IDI_ICON 2000
+
+#endif // _JAVA_RC_H_

src/java.desktop/macosx/classes/com/apple/laf/AquaImageFactory.java

@@ -82,11 +82,11 @@ public class AquaImageFactory {
     }
 
     static Image getGenericJavaIcon() {
-        return java.security.AccessController.doPrivileged(new PrivilegedAction<Image>() {
+        return checkValidOrStub(java.security.AccessController.doPrivileged(new PrivilegedAction<Image>() {
             public Image run() {
                 return com.apple.eawt.Application.getApplication().getDockIconImage();
             }
-        });
+        }));
     }
 
     static String getPathToThisApplication() {
@@ -500,4 +500,23 @@ public class AquaImageFactory {
     public static Color getSelectedControlColorUIResource() {
         return new SystemColorProxy(LWCToolkit.getAppleColor(LWCToolkit.SELECTED_CONTROL_TEXT_COLOR));
     }
+
+    private static class EmptyImage {
+        static final BufferedImage INSTANCE;
+        static {
+            INSTANCE = new BufferedImage(16, 16, BufferedImage.TYPE_INT_ARGB);
+            Graphics g = INSTANCE.createGraphics();
+            g.setColor(new Color(0, 0, 0, 0));
+            g.fillRect(0, 0, 16, 16);
+            g.dispose();
+        }
+    }
+
+    // [tav] a workaround for JBR-1492
+    private static Image checkValidOrStub(Image image) {
+        if (image == null || image.getWidth(null) <= 0 || image.getHeight(null) <= 0) {
+            return EmptyImage.INSTANCE;
+        }
+        return image;
+    }
 }

src/java.desktop/macosx/classes/sun/lwawt/LWWindowPeer.java

@@ -78,6 +78,7 @@ import sun.java2d.SurfaceData;
 import sun.java2d.loops.Blit;
 import sun.java2d.loops.CompositeType;
 import sun.java2d.pipe.Region;
+import sun.lwawt.macosx.CPlatformWindow;
 import sun.util.logging.PlatformLogger;
 
 public class LWWindowPeer
@@ -1510,4 +1511,17 @@ public class LWWindowPeer
     public String toString() {
         return super.toString() + " [target is " + getTarget() + "]";
     }
+
+    /**
+     * [tav] Used externally.
+     */
+    @Override
+    public long getWindowHandle() {
+        final long[] handle = new long[1];
+        PlatformWindow window = getPlatformWindow();
+        if (window instanceof CPlatformWindow) {
+            ((CPlatformWindow)window).execute(ptr -> handle[0] = ptr);
+        }
+        return handle[0];
+    }
 }

src/java.desktop/macosx/classes/sun/lwawt/macosx/CAccessible.java

@@ -99,7 +99,7 @@ class CAccessible extends CFRetainedResource implements Accessible {
 
     @Override
     public AccessibleContext getAccessibleContext() {
-        return accessible.getAccessibleContext();
+        return accessible != null ? accessible.getAccessibleContext() : null;
     }
 
     public void addNotificationListeners(Component c) {

src/java.desktop/macosx/classes/sun/lwawt/macosx/CInputMethod.java

@@ -26,6 +26,7 @@
 package sun.lwawt.macosx;
 
 import java.awt.im.spi.*;
+import java.lang.reflect.Method;
 import java.util.*;
 import java.awt.*;
 import java.awt.peer.*;
@@ -36,17 +37,21 @@ import java.lang.Character.Subset;
 import java.lang.reflect.InvocationTargetException;
 import java.text.AttributedCharacterIterator.Attribute;
 import java.text.*;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.atomic.AtomicBoolean;
 import javax.swing.text.JTextComponent;
 
 import sun.awt.AWTAccessor;
+import sun.awt.AppContext;
+import sun.awt.SunToolkit;
 import sun.awt.im.InputMethodAdapter;
 import sun.lwawt.*;
 
 import static sun.awt.AWTAccessor.ComponentAccessor;
 
 public class CInputMethod extends InputMethodAdapter {
-    private InputMethodContext fIMContext;
-    private Component fAwtFocussedComponent;
+    private volatile InputMethodContext fIMContext;
+    private volatile Component fAwtFocussedComponent;
     private LWComponentPeer<?, ?> fAwtFocussedComponentPeer;
     private boolean isActive;
 
@@ -292,6 +297,18 @@ public class CInputMethod extends InputMethodAdapter {
             if (component.getInputMethodRequests() == null) {
                 imInstance = null;
             }
+
+            LWWindowPeer windowPeer = peer.getPlatformWindow().getPeer();
+            if (windowPeer.isSimpleWindow()) {
+                // A simple window gains focus. Cocoa won't dispatch IME events into the simple window, but into its owner.
+                // This IM represents the focused component in the simple window. We will use the owner as IME proxy.
+                // For that, this IM is set for the owner and is dropped for the simple window.
+                Window owner = windowPeer.getTarget().getOwner();
+                assert owner != null && owner.isActive();
+                long ownerPtr = getNativeViewPtr((LWComponentPeer)AWTAccessor.getComponentAccessor().getPeer(owner));
+                nativeNotifyPeer(ownerPtr, this);
+                imInstance = null;
+            }
         }
 
         if (peer != null) {
@@ -587,6 +604,7 @@ public class CInputMethod extends InputMethodAdapter {
         final String[] retString = new String[1];
 
         try {
+            if (fIMContext != null)
             LWCToolkit.invokeAndWait(new Runnable() {
                 public void run() { synchronized(retString) {
                     int location = locationIn;
@@ -639,6 +657,7 @@ public class CInputMethod extends InputMethodAdapter {
         final int[] returnValue = new int[2];
 
         try {
+            if (fIMContext != null)
             LWCToolkit.invokeAndWait(new Runnable() {
                 public void run() { synchronized(returnValue) {
                     AttributedCharacterIterator theIterator = fIMContext.getSelectedText(null);
@@ -714,36 +733,38 @@ public class CInputMethod extends InputMethodAdapter {
         final int[] rect = new int[4];
 
         try {
-            LWCToolkit.invokeAndWait(new Runnable() {
-                public void run() { synchronized(rect) {
-                    int insertOffset = fIMContext.getInsertPositionOffset();
-                    int composedTextOffset = absoluteTextOffset - insertOffset;
-                    if (composedTextOffset < 0) composedTextOffset = 0;
-                    Rectangle r = fIMContext.getTextLocation(TextHitInfo.beforeOffset(composedTextOffset));
-                    rect[0] = r.x;
-                    rect[1] = r.y;
-                    rect[2] = r.width;
-                    rect[3] = r.height;
+            if (fIMContext != null) {
+                FxInvoker.invoke(() -> {
+                    synchronized (rect) {
+                        int insertOffset = fIMContext.getInsertPositionOffset();
+                        int composedTextOffset = absoluteTextOffset - insertOffset;
+                        if (composedTextOffset < 0) composedTextOffset = 0;
+                        Rectangle r = fIMContext.getTextLocation(TextHitInfo.beforeOffset(composedTextOffset));
+                        rect[0] = r.x;
+                        rect[1] = r.y;
+                        rect[2] = r.width;
+                        rect[3] = r.height;
 
-                    // This next if-block is a hack to work around a bug in JTextComponent. getTextLocation ignores
-                    // the TextHitInfo passed to it and always returns the location of the insertion point, which is
-                    // at the start of the composed text.  We'll do some calculation so the candidate window for Kotoeri
-                    // follows the requested offset into the composed text.
-                    if (composedTextOffset > 0 && (fAwtFocussedComponent instanceof JTextComponent)) {
-                        Rectangle r2 = fIMContext.getTextLocation(TextHitInfo.beforeOffset(0));
+                        // This next if-block is a hack to work around a bug in JTextComponent. getTextLocation ignores
+                        // the TextHitInfo passed to it and always returns the location of the insertion point, which is
+                        // at the start of the composed text.  We'll do some calculation so the candidate window for Kotoeri
+                        // follows the requested offset into the composed text.
+                        if (composedTextOffset > 0 && (fAwtFocussedComponent instanceof JTextComponent)) {
+                            Rectangle r2 = fIMContext.getTextLocation(TextHitInfo.beforeOffset(0));
 
-                        if (r.equals(r2)) {
-                            // FIXME: (SAK) If the candidate text wraps over two lines, this calculation pushes the candidate
-                            // window off the right edge of the component.
-                            String inProgressSubstring = fCurrentTextAsString.substring(0, composedTextOffset);
-                            Graphics g = fAwtFocussedComponent.getGraphics();
-                            int xOffset = g.getFontMetrics().stringWidth(inProgressSubstring);
-                            rect[0] += xOffset;
-                            g.dispose();
+                            if (r.equals(r2) && fCurrentTextAsString != null) {
+                                // FIXME: (SAK) If the candidate text wraps over two lines, this calculation pushes the candidate
+                                // window off the right edge of the component.
+                                String inProgressSubstring = fCurrentTextAsString.substring(0, composedTextOffset);
+                                Graphics g = fAwtFocussedComponent.getGraphics();
+                                int xOffset = g.getFontMetrics().stringWidth(inProgressSubstring);
+                                rect[0] += xOffset;
+                                g.dispose();
+                            }
                         }
                     }
-                }}
-            }, fAwtFocussedComponent);
+                }, (sun.awt.im.InputContext)fIMContext, fAwtFocussedComponent);
+            }
         } catch (InvocationTargetException ite) { ite.printStackTrace(); }
 
         synchronized(rect) { return rect; }
@@ -758,12 +779,14 @@ public class CInputMethod extends InputMethodAdapter {
         final int[] insertPositionOffset = new int[1];
 
         try {
-            LWCToolkit.invokeAndWait(new Runnable() {
-                public void run() { synchronized(offsetInfo) {
-                    offsetInfo[0] = fIMContext.getLocationOffset(screenX, screenY);
-                    insertPositionOffset[0] = fIMContext.getInsertPositionOffset();
-                }}
-            }, fAwtFocussedComponent);
+            if (fIMContext != null) {
+                FxInvoker.invoke(() -> {
+                    synchronized (offsetInfo) {
+                        offsetInfo[0] = fIMContext.getLocationOffset(screenX, screenY);
+                        insertPositionOffset[0] = fIMContext.getInsertPositionOffset();
+                    }
+                }, (sun.awt.im.InputContext)fIMContext, fAwtFocussedComponent);
+            }
         } catch (InvocationTargetException ite) { ite.printStackTrace(); }
 
         // This bit of gymnastics ensures that the returned location is within the composed text.
@@ -813,4 +836,63 @@ public class CInputMethod extends InputMethodAdapter {
 
     // Initialize toolbox routines
     static native void nativeInit();
+
+    private static class FxInvoker {
+        final static Method GET_CLIENT_COMPONENT_METHOD;
+        static Class<?> JFX_PANEL_CLASS;
+
+        static {
+            Method m = null;
+            try {
+                m = sun.awt.im.InputContext.class.getDeclaredMethod("getClientComponent");
+                if (m != null) m.setAccessible(true);
+            } catch (NoSuchMethodException ignore) {
+            }
+            GET_CLIENT_COMPONENT_METHOD = m;
+        }
+
+        static Component getClientComponent(sun.awt.im.InputContext ctx) {
+            if (GET_CLIENT_COMPONENT_METHOD != null) {
+                try {
+                    return (Component)GET_CLIENT_COMPONENT_METHOD.invoke(ctx);
+                } catch (IllegalAccessException | InvocationTargetException ignore) {
+                }
+            }
+            return null;
+        }
+
+        static boolean instanceofJFXPanel(Component clientComponent) {
+            if (clientComponent != null) {
+                if (JFX_PANEL_CLASS == null) {
+                    try {
+                        // the class is not available in the current class loader context, use the client class loader
+                        JFX_PANEL_CLASS = Class.forName("javafx.embed.swing.JFXPanel", false, clientComponent.getClass().getClassLoader());
+                    } catch (ClassNotFoundException ignore) {
+                    }
+                }
+                if (JFX_PANEL_CLASS != null) {
+                    return JFX_PANEL_CLASS.isInstance(clientComponent);
+                }
+            }
+            return false;
+        }
+
+        // Executed on AppKit
+        static void invoke(Runnable runnable, sun.awt.im.InputContext inputContext, Component targetToAppContext) throws InvocationTargetException {
+            AtomicBoolean runOnAppKit = new AtomicBoolean(false);
+
+            // 1) Do not run secondary msg loop in this case.
+            // 2) Delegate runnable back to FX when applicable.
+            LWCToolkit.invokeAndWait(() -> {
+                runOnAppKit.set(instanceofJFXPanel(getClientComponent(inputContext)));
+                if (!runOnAppKit.get()) {
+                    runnable.run();
+                }
+            }, targetToAppContext);
+
+            if (runOnAppKit.get()) {
+                runnable.run();
+            }
+        }
+    }
 }

src/java.desktop/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java

@@ -25,6 +25,7 @@
 
 package sun.lwawt.macosx;
 
+import java.awt.AWTError;
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.DefaultKeyboardFocusManager;
@@ -51,6 +52,7 @@ import java.util.Comparator;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.concurrent.atomic.AtomicReference;
+import java.security.PrivilegedAction;
 
 import javax.swing.JRootPane;
 import javax.swing.RootPaneContainer;
@@ -61,6 +63,7 @@ import com.apple.laf.ClientPropertyApplicator.Property;
 import sun.awt.AWTAccessor;
 import sun.awt.AWTAccessor.ComponentAccessor;
 import sun.awt.AWTAccessor.WindowAccessor;
+import sun.awt.InvokeOnToolkitHelper;
 import sun.java2d.SurfaceData;
 import sun.lwawt.LWLightweightFramePeer;
 import sun.lwawt.LWToolkit;
@@ -323,26 +326,36 @@ public class CPlatformWindow extends CFRetainedResource implements PlatformWindo
         } else {
             bounds = _peer.constrainBounds(_target.getBounds());
         }
-        AtomicLong ref = new AtomicLong();
-        contentView.execute(viewPtr -> {
-            boolean hasOwnerPtr = false;
+        long nativeWindowPtr = java.security.AccessController.doPrivileged(
+                (PrivilegedAction<Long>) () -> {
+                    try {
+                        return InvokeOnToolkitHelper.invokeAndBlock(() -> {
+                            AtomicLong ref = new AtomicLong();
+                            contentView.execute(viewPtr -> {
+                                boolean hasOwnerPtr = false;
 
-            if (owner != null) {
-                hasOwnerPtr = 0L != owner.executeGet(ownerPtr -> {
-                    ref.set(nativeCreateNSWindow(viewPtr, ownerPtr, styleBits,
-                                                    bounds.x, bounds.y,
-                                                    bounds.width, bounds.height));
-                    return 1;
+                                if (owner != null) {
+                                    hasOwnerPtr = 0L != owner.executeGet(ownerPtr -> {
+                                        ref.set(nativeCreateNSWindow(viewPtr, ownerPtr, styleBits,
+                                                bounds.x, bounds.y,
+                                                bounds.width, bounds.height));
+                                        return 1;
+                                    });
+                                }
+
+                                if (!hasOwnerPtr) {
+                                    ref.set(nativeCreateNSWindow(viewPtr, 0,
+                                            styleBits, bounds.x, bounds.y,
+                                            bounds.width, bounds.height));
+                                }
+                            });
+                            return ref.get();
+                        });
+                    } catch (Throwable throwable) {
+                        throw new AWTError(throwable.getMessage());
+                    }
                 });
-            }
-
-            if (!hasOwnerPtr) {
-                ref.set(nativeCreateNSWindow(viewPtr, 0,
-                                             styleBits, bounds.x, bounds.y,
-                                             bounds.width, bounds.height));
-            }
-        });
-        setPtr(ref.get());
+        setPtr(nativeWindowPtr);
 
         if (target instanceof javax.swing.RootPaneContainer) {
             final javax.swing.JRootPane rootpane = ((javax.swing.RootPaneContainer)target).getRootPane();

src/java.desktop/macosx/classes/sun/lwawt/macosx/LWCToolkit.java

@@ -85,27 +85,15 @@ import java.awt.peer.TaskbarPeer;
 import java.awt.peer.TrayIconPeer;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.UndeclaredThrowableException;
-import java.net.MalformedURLException;
 import java.net.URL;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
-import java.util.HashMap;
-import java.util.Locale;
-import java.util.Map;
-import java.util.MissingResourceException;
-import java.util.Objects;
-import java.util.ResourceBundle;
-import java.util.concurrent.Callable;
-
+import java.security.*;
+import java.util.*;
+import java.util.concurrent.*;
+import java.net.MalformedURLException;
 import javax.swing.UIManager;
 
 import com.apple.laf.AquaMenuBarUI;
-import sun.awt.AWTAccessor;
-import sun.awt.AppContext;
-import sun.awt.CGraphicsDevice;
-import sun.awt.LightweightFrame;
-import sun.awt.PlatformGraphicsInfo;
-import sun.awt.SunToolkit;
+import sun.awt.*;
 import sun.awt.datatransfer.DataTransferer;
 import sun.awt.dnd.SunDragSourceContextPeer;
 import sun.awt.util.ThreadGroupUtils;
@@ -494,9 +482,9 @@ public final class LWCToolkit extends LWToolkit {
     public Insets getScreenInsets(final GraphicsConfiguration gc) {
         GraphicsDevice gd = gc.getDevice();
         if (!(gd instanceof CGraphicsDevice)) {
-            return super.getScreenInsets(gc);
+            return InvokeOnToolkitHelper.invokeAndBlock(() -> super.getScreenInsets(gc));
         }
-        return ((CGraphicsDevice)gd).getScreenInsets();
+        return InvokeOnToolkitHelper.invokeAndBlock(() -> ((CGraphicsDevice)gd).getScreenInsets());
     }
 
     @Override
@@ -725,12 +713,19 @@ public final class LWCToolkit extends LWToolkit {
                         },
                         true);
 
-        AppContext appContext = SunToolkit.targetToAppContext(component);
-        SunToolkit.postEvent(appContext, invocationEvent);
-        // 3746956 - flush events from PostEventQueue to prevent them from getting stuck and causing a deadlock
-        SunToolkit.flushPendingEvents(appContext);
-        doAWTRunLoop(mediator, false);
+        if (!InvokeOnToolkitHelper.offer(invocationEvent)) {
+            if (component != null) {
+                AppContext appContext = SunToolkit.targetToAppContext(component);
+                SunToolkit.postEvent(appContext, invocationEvent);
 
+                // 3746956 - flush events from PostEventQueue to prevent them from getting stuck and causing a deadlock
+                SunToolkit.flushPendingEvents(appContext);
+            } else {
+                // This should be the equivalent to EventQueue.invokeAndWait
+                ((LWCToolkit) Toolkit.getDefaultToolkit()).getSystemEventQueueImpl().postEvent(invocationEvent);
+            }
+        }
+        doAWTRunLoop(mediator, false);
         checkException(invocationEvent);
     }
 

src/java.desktop/macosx/native/libawt_lwawt/awt/AWTWindow.m

@@ -1106,6 +1106,17 @@ JNI_COCOA_ENTER(env);
     NSView *contentView = OBJC(contentViewPtr);
     NSRect frameRect = NSMakeRect(x, y, w, h);
     AWTWindow *owner = [OBJC(ownerPtr) delegate];
+
+    BOOL isIgnoreMouseEvents = NO;
+    GET_CPLATFORM_WINDOW_CLASS_RETURN(nil);
+    DECLARE_FIELD_RETURN(jf_target, jc_CPlatformWindow, "target", "Ljava/awt/Window;", nil);
+    jobject awtWindow = (*env)->GetObjectField(env, obj, jf_target);
+    if (awtWindow != NULL) {
+        DECLARE_CLASS_RETURN(jc_Window, "java/awt/Window", nil);
+        DECLARE_METHOD_RETURN(jm_isIgnoreMouseEvents, jc_Window, "isIgnoreMouseEvents", "()Z", nil);
+        isIgnoreMouseEvents = (*env)->CallBooleanMethod(env, awtWindow, jm_isIgnoreMouseEvents) == JNI_TRUE ? YES : NO;
+        (*env)->DeleteLocalRef(env, awtWindow);
+    }
     [ThreadUtilities performOnMainThreadWaiting:YES block:^(){
 
         window = [[AWTWindow alloc] initWithPlatformWindow:platformWindow
@@ -1115,7 +1126,12 @@ JNI_COCOA_ENTER(env);
                                                contentView:contentView];
         // the window is released is CPlatformWindow.nativeDispose()
 
-        if (window) [window.nsWindow retain];
+        if (window) {
+            [window.nsWindow retain];
+            if (isIgnoreMouseEvents) {
+                [window.nsWindow setIgnoresMouseEvents:YES];
+            }
+        }
     }];
 
 JNI_COCOA_EXIT(env);

src/java.desktop/macosx/native/libawt_lwawt/awt/CGraphicsDevice.m

@@ -158,9 +158,11 @@ static jobject createJavaDisplayMode(CGDisplayModeRef mode, JNIEnv *env) {
         w = CGDisplayModeGetWidth(mode);
         CFRelease(currentBPP);
     }
+    uint32_t flags = CGDisplayModeGetIOFlags(mode);
+    BOOL isDisplayModeDefault = (flags & kDisplayModeDefaultFlag) ? YES : NO;
     DECLARE_CLASS_RETURN(jc_DisplayMode, "java/awt/DisplayMode", ret);
-    DECLARE_METHOD_RETURN(jc_DisplayMode_ctor, jc_DisplayMode, "<init>", "(IIII)V", ret);
-    ret = (*env)->NewObject(env, jc_DisplayMode, jc_DisplayMode_ctor, w, h, bpp, refrate);
+    DECLARE_METHOD_RETURN(jc_DisplayMode_ctor, jc_DisplayMode, "<init>", "(IIIIZ)V", ret);
+    ret = (*env)->NewObject(env, jc_DisplayMode, jc_DisplayMode_ctor, w, h, bpp, refrate, (jboolean)isDisplayModeDefault);
     CHECK_EXCEPTION();
     JNI_COCOA_EXIT(env);
     return ret;

src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKEngine.java

@@ -94,6 +94,7 @@ class GTKEngine {
     static enum Settings {
         GTK_FONT_NAME,
         GTK_ICON_SIZES,
+        GTK_XFT_DPI,
         GTK_CURSOR_BLINK,
         GTK_CURSOR_BLINK_TIME
     }

src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKLookAndFeel.java

@@ -45,6 +45,7 @@ import java.util.Map;
 import sun.awt.SunToolkit;
 import sun.awt.UNIXToolkit;
 import sun.awt.OSInfo;
+import sun.awt.X11GraphicsDevice;
 import sun.security.action.GetPropertyAction;
 import sun.swing.DefaultLayoutStyle;
 import sun.swing.SwingAccessor;
@@ -1446,6 +1447,18 @@ public class GTKLookAndFeel extends SynthLookAndFeel {
         gtkAAFontSettingsCond = SwingUtilities2.isLocalDisplay();
         aaTextInfo = new HashMap<>(2);
         SwingUtilities2.putAATextInfo(gtkAAFontSettingsCond, aaTextInfo);
+
+        Object value = GTKEngine.INSTANCE.getSetting(GTKEngine.Settings.GTK_XFT_DPI);
+        if (value instanceof Integer) {
+            int dpi = ((Integer)value).intValue() / 1024;
+            if (dpi == -1) {
+                dpi = 96;
+            }
+            if (dpi < 50) {
+                dpi = 50;
+            }
+            X11GraphicsDevice.setXftDpi(dpi);
+        }
     }
 
     static ReferenceQueue<GTKLookAndFeel> queue = new ReferenceQueue<GTKLookAndFeel>();

src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/PangoFonts.java

@@ -30,8 +30,10 @@ import java.awt.geom.AffineTransform;
 import javax.swing.plaf.FontUIResource;
 import java.util.StringTokenizer;
 
+import sun.awt.AWTAccessor;
 import sun.font.FontConfigManager;
 import sun.font.FontUtilities;
+import sun.java2d.SunGraphicsEnvironment;
 
 /**
  * @author Shannon Hickey
@@ -161,11 +163,15 @@ class PangoFonts {
          */
         double dsize = size;
         int dpi = 96;
-        Object value =
-            Toolkit.getDefaultToolkit().getDesktopProperty("gnome.Xft/DPI");
+        Object xftDPI = Toolkit.getDefaultToolkit().getDesktopProperty("gnome.Xft/DPI");
+        Object value = xftDPI;
+
+        if (!(value instanceof Integer)) {
+            value = GTKEngine.INSTANCE.getSetting(GTKEngine.Settings.GTK_XFT_DPI);
+        }
         if (value instanceof Integer) {
             dpi = ((Integer)value).intValue() / 1024;
-            if (dpi == -1) {
+            if (dpi == -1 || SunGraphicsEnvironment.isUIScaleEnabled(dpi)) {
               dpi = 96;
             }
             if (dpi < 50) { /* 50 dpi is the minimum value gnome allows */
@@ -175,6 +181,12 @@ class PangoFonts {
              * 72 dpi, so we need to adjust for that.
              */
             dsize = ((double)(dpi * size)/ 72.0);
+
+            if (xftDPI == null) {
+                // [tav] used to indicate the 96/72 scale correction to the client app
+                AWTAccessor.getToolkitAccessor().setDesktopProperty(
+                    Toolkit.getDefaultToolkit(), "gnome.Xft/DPI", value);
+            }
         } else {
             /* If there's no property, GTK scales for the resolution
              * reported by the Xserver using the formula listed above.

src/java.desktop/share/classes/java/awt/Component.java

@@ -25,6 +25,7 @@
 
 package java.awt;
 
+import java.awt.geom.AffineTransform;
 import java.applet.Applet;
 import java.awt.dnd.DropTarget;
 import java.awt.event.ActionEvent;
@@ -93,6 +94,10 @@ import javax.swing.JRootPane;
 import sun.awt.AWTAccessor;
 import sun.awt.AppContext;
 import sun.awt.ComponentFactory;
+import sun.security.action.GetBooleanAction;
+import sun.security.action.GetPropertyAction;
+import sun.awt.AppContext;
+import sun.awt.AWTAccessor;
 import sun.awt.ConstrainableGraphics;
 import sun.awt.EmbeddedFrame;
 import sun.awt.RequestFocusController;
@@ -612,6 +617,8 @@ public abstract class Component implements ImageObserver, MenuContainer,
      */
     long eventMask = AWTEvent.INPUT_METHODS_ENABLED_MASK;
 
+    private static final boolean INPUT_METHODS_DISABLED;
+
     /**
      * Static properties for incremental drawing.
      * @see #imageUpdate
@@ -633,6 +640,8 @@ public abstract class Component implements ImageObserver, MenuContainer,
         s = java.security.AccessController.doPrivileged(
                                                         new GetPropertyAction("awt.image.redrawrate"));
         incRate = (s != null) ? Integer.parseInt(s) : 100;
+
+        INPUT_METHODS_DISABLED = java.security.AccessController.doPrivileged(new GetBooleanAction("awt.ime.disabled"));
     }
 
     /**
@@ -1189,7 +1198,15 @@ public abstract class Component implements ImageObserver, MenuContainer,
         if (graphicsConfig == gc) {
             return false;
         }
+
+        AffineTransform tx = graphicsConfig != null ? graphicsConfig.getDefaultTransform() : new AffineTransform();
+        AffineTransform newTx = gc != null ? gc.getDefaultTransform() : new AffineTransform();
         graphicsConfig = gc;
+        if (tx.getScaleX() != newTx.getScaleX() ||
+            tx.getScaleY() != newTx.getScaleY())
+        {
+            firePropertyChange("graphicsContextScaleTransform", tx, newTx);
+        }
 
         ComponentPeer peer = this.peer;
         if (peer != null) {
@@ -1623,6 +1640,7 @@ public abstract class Component implements ImageObserver, MenuContainer,
      * @since 1.2
      */
     public void enableInputMethods(boolean enable) {
+        if (INPUT_METHODS_DISABLED) return;
         if (enable) {
             if ((eventMask & AWTEvent.INPUT_METHODS_ENABLED_MASK) != 0)
                 return;
@@ -5148,6 +5166,7 @@ public abstract class Component implements ImageObserver, MenuContainer,
     }
 
     boolean areInputMethodsEnabled() {
+        if (INPUT_METHODS_DISABLED) return false;
         // in 1.2, we assume input method support is required for all
         // components that handle key events, but components can turn off
         // input methods by calling enableInputMethods(false).

src/java.desktop/share/classes/java/awt/DisplayMode.java

@@ -51,6 +51,7 @@ public final class DisplayMode {
     private Dimension size;
     private int bitDepth;
     private int refreshRate;
+    private boolean isDefault;
 
     /**
      * Create a new display mode object with the supplied parameters.
@@ -71,6 +72,13 @@ public final class DisplayMode {
         this.refreshRate = refreshRate;
     }
 
+    private DisplayMode(int width, int height, int bitDepth, int refreshRate, boolean isDefault) {
+        this.size = new Dimension(width, height);
+        this.bitDepth = bitDepth;
+        this.refreshRate = refreshRate;
+        this.isDefault = isDefault;
+    }
+
     /**
      * Returns the height of the display, in pixels.
      * @return the height of the display, in pixels
@@ -123,6 +131,10 @@ public final class DisplayMode {
         return refreshRate;
     }
 
+    private boolean isDefault() {
+        return isDefault;
+    }
+
     /**
      * Returns whether the two display modes are equal.
      *

src/java.desktop/share/classes/java/awt/Toolkit.java

@@ -1397,6 +1397,11 @@ public abstract class Toolkit {
                     public void setPlatformResources(ResourceBundle bundle) {
                         Toolkit.setPlatformResources(bundle);
                     }
+
+                    @Override
+                    public void setDesktopProperty(Toolkit tk, String prop, Object value) {
+                        tk.setDesktopProperty(prop, value);
+                    }
                 });
 
         java.security.AccessController.doPrivileged(

src/java.desktop/share/classes/java/awt/Window.java

@@ -3984,6 +3984,31 @@ public class Window extends Container implements Accessible {
         }
     }
 
+    private volatile boolean hasCustomDecoration;
+
+    boolean hasCustomDecoration() {
+        return hasCustomDecoration;
+    }
+
+    /**
+     * Set via reflection (JB JdkEx API).
+     */
+    void setHasCustomDecoration() {
+        hasCustomDecoration = true;
+    }
+
+    private volatile boolean ignoreMouseEvents;
+
+    boolean isIgnoreMouseEvents() {
+        return ignoreMouseEvents;
+    }
+
+    /**
+     * Set via reflection (JB JdkEx API).
+     */
+    void setIgnoreMouseEvents(boolean ignore) {
+        ignoreMouseEvents = ignore;
+    }
 
     // ************************** MIXING CODE *******************************
 

src/java.desktop/share/classes/java/awt/peer/WindowPeer.java

@@ -118,4 +118,20 @@ public interface WindowPeer extends ContainerPeer {
      * Instructs the peer to update the position of the security warning.
      */
     void repositionSecurityWarning();
+
+    /**
+     * Returns the system insets (in the scale of the Window device) when available.
+     *
+     * @return the system insets or null
+     */
+    default Insets getSysInsets() { return null; }
+
+    /**
+     * Returns platform window handle.
+     *
+     * @return the window handle
+     */
+    default long getWindowHandle() {
+        throw new UnsupportedOperationException("unimplemented");
+    }
 }

src/java.desktop/share/classes/javax/swing/RepaintManager.java

@@ -27,7 +27,10 @@ package javax.swing;
 
 import java.awt.*;
 import java.awt.event.*;
+import java.awt.geom.Point2D;
+import java.awt.geom.Rectangle2D;
 import java.awt.image.VolatileImage;
+import java.awt.peer.WindowPeer;
 import java.security.AccessControlContext;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
@@ -1612,7 +1615,8 @@ public class RepaintManager
          */
         protected void paintDoubleBuffered(JComponent c, Image image,
                 Graphics g, int clipX, int clipY,
-                int clipW, int clipH) {
+                int clipW, int clipH)
+        {
             if (image instanceof VolatileImage && isPixelsCopying(c, g)) {
                 paintDoubleBufferedFPScales(c, image, g, clipX, clipY, clipW, clipH);
             } else {

src/java.desktop/share/classes/javax/swing/UIManager.java

@@ -62,7 +62,7 @@ import java.util.HashMap;
 import java.util.Objects;
 import sun.awt.AppContext;
 import sun.awt.AWTAccessor;
-
+import java.awt.GraphicsEnvironment;
 
 /**
  * {@code UIManager} manages the current look and feel, the set of
@@ -385,6 +385,11 @@ public class UIManager implements Serializable
         if (osType == OSInfo.OSType.WINDOWS) {
             iLAFs.add(new LookAndFeelInfo("Windows",
                         "com.sun.java.swing.plaf.windows.WindowsLookAndFeel"));
+            if (!GraphicsEnvironment.isHeadless()) {
+                // Force DPI settings in Win32GraphicsEnvironment.initDisplayWrapper()
+                // prior to font size settings in desktop properties.
+                GraphicsEnvironment.getLocalGraphicsEnvironment();
+            }
             if (Toolkit.getDefaultToolkit().getDesktopProperty(
                     "win.xpstyle.themeActive") != null) {
                 iLAFs.add(new LookAndFeelInfo("Windows Classic",

src/java.desktop/share/classes/javax/swing/plaf/basic/BasicHTML.java

@@ -27,14 +27,13 @@ package javax.swing.plaf.basic;
 import java.io.*;
 import java.awt.*;
 import java.net.URL;
+import java.security.PrivilegedAction;
 
 import javax.accessibility.AccessibleContext;
 import javax.swing.*;
 import javax.swing.text.*;
 import javax.swing.text.html.*;
 
-import sun.swing.SwingUtilities2;
-
 /**
  * Support for providing html views for the swing components.
  * This translates a simple html string to a javax.swing.text.View
@@ -45,6 +44,14 @@ import sun.swing.SwingUtilities2;
  * @since 1.3
  */
 public class BasicHTML {
+    // Rebase CSS size map to let relative font sizes scale properly.
+    private final static boolean REBASE_CSS_SIZE_MAP =
+            java.security.AccessController.doPrivileged(
+                    (PrivilegedAction<Boolean>)
+                            () -> Boolean.getBoolean(
+                                    "javax.swing.rebaseCssSizeMap"));
+
+    private final static String JLABEL_USER_CSS_KEY = "javax.swing.JLabel.userStyleSheet";
 
     /**
      * Constructs a {@code BasicHTML}.
@@ -63,6 +70,12 @@ public class BasicHTML {
         BasicEditorKit kit = getFactory();
         Document doc = kit.createDefaultDocument(c.getFont(),
                                                  c.getForeground());
+        if (c instanceof JLabel) {
+            Object userCss = UIManager.getDefaults().get(JLABEL_USER_CSS_KEY);
+            if (userCss instanceof StyleSheet) {
+                ((HTMLDocument)doc).getStyleSheet().addStyleSheet((StyleSheet)userCss);
+            }
+        }
         Object base = c.getClientProperty(documentBaseKey);
         if (base instanceof URL) {
             ((HTMLDocument)doc).setBase((URL)base);
@@ -411,6 +424,10 @@ public class BasicHTML {
         private void setFontAndColor(Font font, Color fg) {
             getStyleSheet().addRule(sun.swing.SwingUtilities2.
                                     displayPropertiesToCSS(font,fg));
+            if (REBASE_CSS_SIZE_MAP && font != null) {
+                // See: javax.swing.plaf.basic.BasicEditorPaneUI.updateCSS()
+                if (font != null) getStyleSheet().addRule("BASE_SIZE " + font.getSize());
+            }
         }
     }
 

src/java.desktop/share/classes/javax/swing/plaf/basic/BasicTextUI.java

@@ -1923,9 +1923,24 @@ public abstract class BasicTextUI extends TextUI implements ViewFactory {
                 updateCursor();
                 modelChanged();
             }
+            if (propertyName.equals("graphicsContextScaleTransform")) {
+                // force re-layout of the document view
+                forwardPreferenceChangeToView(rootView);
+            }
             BasicTextUI.this.propertyChange(evt);
         }
 
+        private void forwardPreferenceChangeToView(View view) {
+            if (view.getViewCount() == 0) {
+                // propagate the change up the hierarchy of this leaf view
+                view.preferenceChanged(null, true, true);
+                return;
+            }
+            for (int i=0; i<view.getViewCount(); i++) {
+                forwardPreferenceChangeToView(view.getView(i));
+            }
+        }
+
         private void dropIndexChanged() {
             if (editor.getDropMode() == DropMode.USE_SELECTION) {
                 return;

src/java.desktop/share/classes/javax/swing/text/FlowView.java

@@ -292,6 +292,15 @@ public abstract class FlowView extends BoxView {
         strategy.changedUpdate(this, changes, getInsideAllocation(a));
     }
 
+    /** {@inheritDoc} */
+    @Override
+    public void preferenceChanged(View child, boolean width, boolean height) {
+        super.preferenceChanged(child, width, height);
+        if (strategy instanceof TextLayoutStrategy) {
+            ((TextLayoutStrategy) strategy).syncFRC(this);
+        }
+    }
+
     /** {@inheritDoc} */
     public void setParent(View parent) {
         super.setParent(parent);

src/java.desktop/share/classes/javax/swing/text/GlyphPainter1.java

@@ -24,7 +24,10 @@
  */
 package javax.swing.text;
 
+import sun.swing.SwingUtilities2;
+
 import java.awt.*;
+import java.awt.geom.AffineTransform;
 
 /**
  * A class to perform rendering of the glyphs.
@@ -221,6 +224,15 @@ class GlyphPainter1 extends GlyphView.GlyphPainter {
 
     @SuppressWarnings("deprecation")
     void sync(GlyphView v) {
+        if (metrics != null) {
+            AffineTransform frcTx = metrics.getFontRenderContext().getTransform();
+            AffineTransform newFrcTx = SwingUtilities2.getFontRenderContext(v.getContainer()).getTransform();
+            if (frcTx.getScaleX() != newFrcTx.getScaleX() ||
+                frcTx.getScaleY() != newFrcTx.getScaleY())
+            {
+                metrics = null;
+            }
+        }
         Font f = v.getFont();
         FontMetrics fm = null;
         Container c = v.getContainer();

src/java.desktop/share/classes/javax/swing/text/TextLayoutStrategy.java

@@ -33,6 +33,7 @@ import java.awt.geom.AffineTransform;
 import javax.swing.JComponent;
 import javax.swing.event.DocumentEvent;
 import sun.font.BidiUtils;
+import sun.swing.SwingUtilities2;
 
 /**
  * A flow strategy that uses java.awt.font.LineBreakMeasureer to
@@ -280,6 +281,18 @@ class TextLayoutStrategy extends FlowView.FlowStrategy {
         return pos;
     }
 
+    /**
+     * Synchronize the strategy if the container's FRC scale changes.
+     */
+    void syncFRC(FlowView fv) {
+        AffineTransform newFrcTx = SwingUtilities2.getFontRenderContext(fv.getContainer()).getTransform();
+        if (frcTx.getScaleX() != newFrcTx.getScaleX() ||
+            frcTx.getScaleY() != newFrcTx.getScaleY())
+        {
+            sync(fv);
+        }
+    }
+
     /**
      * Synchronize the strategy with its FlowView.  Allows the strategy
      * to update its state to account for changes in that portion of the
@@ -293,6 +306,8 @@ class TextLayoutStrategy extends FlowView.FlowStrategy {
         Container container = fv.getContainer();
         FontRenderContext frc = sun.swing.SwingUtilities2.
                                     getFontRenderContext(container);
+        frcTx = frc.getTransform();
+
         BreakIterator iter;
         Container c = fv.getContainer();
         if (c != null) {
@@ -335,6 +350,7 @@ class TextLayoutStrategy extends FlowView.FlowStrategy {
 
     private LineBreakMeasurer measurer;
     private AttributedSegment text;
+    private AffineTransform frcTx = new AffineTransform();
 
     /**
      * Implementation of AttributedCharacterIterator that supports

src/java.desktop/share/classes/sun/awt/AWTAccessor.java

@@ -767,6 +767,7 @@ public final class AWTAccessor {
      */
     public interface ToolkitAccessor {
         void setPlatformResources(ResourceBundle bundle);
+        void setDesktopProperty(Toolkit tk, String prop, Object value);
     }
 
     /*

src/java.desktop/share/classes/sun/awt/InvokeOnToolkitHelper.java

@@ -0,0 +1,157 @@
+package sun.awt;
+
+import java.awt.*;
+import java.awt.event.InvocationEvent;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.Map;
+import java.util.Stack;
+import java.util.concurrent.*;
+
+/**
+ * Used to perform a blocking invocation on Toolkit thread from EDT, preventing a deadlock.
+ * The deadlock can happen when EDT and Toolkit perform blocking invocations at the same time.
+ * The following is performed to resolve it:
+ * 1) The invoker spins a nested event loop on EDT while waiting for the invocation to complete.
+ * 2) A separate pool thread is used to perform the invocation.
+ */
+public class InvokeOnToolkitHelper {
+    private ExecutorService executor;
+    // every invokeAndWait() pushes a queue of invocations
+    private final Stack<LinkedBlockingQueue<InvocationEvent>> invocations = new Stack<>();
+
+    // invocations should be dispatched on proper EDT (per AppContext)
+    private static final Map<Thread, InvokeOnToolkitHelper> edt2invokerMap = new ConcurrentHashMap<>();
+
+    private static final int WAIT_LIMIT_SECONDS = 5;
+
+    private InvokeOnToolkitHelper() {}
+
+    /**
+     * Invokes the callable on Toolkit thread and blocks until the completion. The method is re-entrant.
+     *
+     * On macOS it is assumed the callable wraps a native selector. The selector should be executed via [JNFRunLoop performOnMainThreadWaiting:YES ...]
+     * so that the doAWTRunLoop on AppKit (which is run in [JNFRunLoop javaRunLoopMode]) accepts it. The callable wrapper should not call any Java code
+     * which would normally be called on EDT.
+     * <p>
+     * If Toolkit posts invocation events caused by the callable, those events are intercepted and dispatched on EDT out of order.
+     * <p>
+     * When called on non-EDT, the method invokes the callable in place.
+     */
+    public static <T> T invokeAndBlock(Callable<T> callable) {
+        if (callable == null) return null;
+
+        if (EventQueue.isDispatchThread()) {
+            InvokeOnToolkitHelper invoker = getInstance(Thread.currentThread());
+            if (invoker != null) {
+                return invoker.invoke(callable);
+            }
+        }
+        // fallback to default
+        try {
+            return callable.call();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    private <T> T invoke(Callable<T> callable) {
+        assert EventQueue.isDispatchThread();
+        if (executor == null) {
+            // init on EDT
+            AccessController.doPrivileged((PrivilegedAction<?>)() ->
+                    executor = new ThreadPoolExecutor(1, Integer.MAX_VALUE,
+                            60L, TimeUnit.SECONDS,
+                            new SynchronousQueue<>(),
+                            new ThreadFactory() {
+                                private final ThreadFactory factory = Executors.privilegedThreadFactory();
+                                @Override
+                                public Thread newThread(Runnable r) {
+                                    Thread t = factory.newThread(r);
+                                    t.setDaemon(true);
+                                    t.setName("AWT-InvokeOnToolkitHelper " + t.getName());
+                                    return t;
+                                }
+                            })
+            );
+        }
+        LinkedBlockingQueue<InvocationEvent> currentQueue;
+        synchronized (invocations) {
+            invocations.push(currentQueue = new LinkedBlockingQueue<>());
+        }
+
+        FutureTask<T> task = new FutureTask<T>(callable) {
+            @Override
+            protected void done() {
+                synchronized (invocations) {
+                    // Done with the current queue, wake it up.
+                    invocations.pop().add(new InvocationEvent(executor, () -> {}));
+                }
+            }
+        };
+        executor.execute(task);
+
+        try {
+            while (!task.isDone() || !currentQueue.isEmpty()) {
+                InvocationEvent event = currentQueue.poll(WAIT_LIMIT_SECONDS, TimeUnit.SECONDS);
+                if (event == null) {
+                    new RuntimeException("Waiting for the invocation event timed out").printStackTrace();
+                    break;
+                }
+                event.dispatch();
+            }
+            return task.isDone() ? task.get() : null;
+
+        } catch (InterruptedException | ExecutionException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    /**
+     * Warning: the method is used by the implementation and should not be used by a client.
+     *
+     * Checks if there's an active InvokeOnToolkitHelper corresponding to the invocation's AppContext,
+     * adds the invocation to the InvokeOnToolkitHelper's queue and returns true.
+     * Otherwise does nothing and returns false.
+     */
+    public static boolean offer(InvocationEvent invocation) {
+        Object source = invocation.getSource();
+
+        InvokeOnToolkitHelper invoker = (source instanceof Component) ?
+                getInstance((Component)source) :
+                getInstance(Toolkit.getDefaultToolkit().getSystemEventQueue());
+
+        if (invoker == null) return false;
+
+        synchronized (invoker.invocations) {
+            if (!invoker.invocations.isEmpty()) {
+                invoker.invocations.peek().add(invocation);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private static InvokeOnToolkitHelper getInstance(Component comp) {
+        if (comp == null) return null;
+
+        AppContext appContext = SunToolkit.targetToAppContext(comp);
+        if (appContext == null) return null;
+
+        return getInstance((EventQueue)appContext.get(AppContext.EVENT_QUEUE_KEY));
+    }
+
+    private static InvokeOnToolkitHelper getInstance(EventQueue eq) {
+        if (eq == null) return null;
+
+        return getInstance(AWTAccessor.getEventQueueAccessor().getDispatchThread(eq));
+    }
+
+    private static InvokeOnToolkitHelper getInstance(Thread edt) {
+        if (edt == null) return null;
+
+        return edt2invokerMap.computeIfAbsent(edt, key -> new InvokeOnToolkitHelper());
+    }
+}

src/java.desktop/share/classes/sun/awt/SunDisplayChanger.java

@@ -26,13 +26,8 @@
 package sun.awt;
 
 import java.awt.IllegalComponentStateException;
-import java.util.Collections;
-import java.util.Iterator;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Set;
-import java.util.WeakHashMap;
+import java.util.*;
+import java.util.function.Consumer;
 
 import sun.util.logging.PlatformLogger;
 
@@ -105,38 +100,7 @@ public class SunDisplayChanger {
         if (log.isLoggable(PlatformLogger.Level.FINEST)) {
             log.finest("notifyListeners");
         }
-    // This method is implemented by making a clone of the set of listeners,
-    // and then iterating over the clone.  This is because during the course
-    // of responding to a display change, it may be appropriate for a
-    // DisplayChangedListener to add or remove itself from a SunDisplayChanger.
-    // If the set itself were iterated over, rather than a clone, it is
-    // trivial to get a ConcurrentModificationException by having a
-    // DisplayChangedListener remove itself from its list.
-    // Because all display change handling is done on the event thread,
-    // synchronization provides no protection against modifying the listener
-    // list while in the middle of iterating over it.  -bchristi 7/10/2001
-
-        Set<DisplayChangedListener> cloneSet;
-
-        synchronized(listeners) {
-            cloneSet = new HashSet<DisplayChangedListener>(listeners.keySet());
-        }
-
-        for (DisplayChangedListener current : cloneSet) {
-            try {
-                if (log.isLoggable(PlatformLogger.Level.FINEST)) {
-                    log.finest("displayChanged for listener: " + current);
-                }
-                current.displayChanged();
-            } catch (IllegalComponentStateException e) {
-                // This DisplayChangeListener is no longer valid.  Most
-                // likely, a top-level window was dispose()d, but its
-                // Java objects have not yet been garbage collected.  In any
-                // case, we no longer need to track this listener, though we
-                // do need to remove it from the original list, not the clone.
-                listeners.remove(current);
-            }
-        }
+        notifyChanged(DisplayChangedListener::displayChanged, "displayChanged");
     }
 
     /*
@@ -147,28 +111,34 @@ public class SunDisplayChanger {
         if (log.isLoggable(PlatformLogger.Level.FINEST)) {
             log.finest("notifyPaletteChanged");
         }
-    // This method is implemented by making a clone of the set of listeners,
-    // and then iterating over the clone.  This is because during the course
-    // of responding to a display change, it may be appropriate for a
-    // DisplayChangedListener to add or remove itself from a SunDisplayChanger.
-    // If the set itself were iterated over, rather than a clone, it is
-    // trivial to get a ConcurrentModificationException by having a
-    // DisplayChangedListener remove itself from its list.
-    // Because all display change handling is done on the event thread,
-    // synchronization provides no protection against modifying the listener
-    // list while in the middle of iterating over it.  -bchristi 7/10/2001
+        notifyChanged(DisplayChangedListener::paletteChanged, "paletteChanged");
+    }
 
-        Set<DisplayChangedListener> cloneSet;
+    private void notifyChanged(Consumer<DisplayChangedListener> callback, String callbackName) {
+        // This method is implemented by making a clone of the set of listeners,
+        // and then iterating over the clone.  This is because during the course
+        // of responding to a display change, it may be appropriate for a
+        // DisplayChangedListener to add or remove itself from a SunDisplayChanger.
+        // If the set itself were iterated over, rather than a clone, it is
+        // trivial to get a ConcurrentModificationException by having a
+        // DisplayChangedListener remove itself from its list.
+        // Because all display change handling is done on the event thread,
+        // synchronization provides no protection against modifying the listener
+        // list while in the middle of iterating over it.  -bchristi 7/10/2001
 
-        synchronized (listeners) {
-            cloneSet = new HashSet<DisplayChangedListener>(listeners.keySet());
+        // Preserve "weakness" of the original map to avoid OOME.
+        WeakHashMap<DisplayChangedListener, Void> cloneMap;
+
+        synchronized(listeners) {
+            cloneMap = new WeakHashMap<>(listeners);
         }
-        for (DisplayChangedListener current : cloneSet) {
+
+        for (DisplayChangedListener current : cloneMap.keySet()) {
             try {
                 if (log.isLoggable(PlatformLogger.Level.FINEST)) {
-                    log.finest("paletteChanged for listener: " + current);
+                    log.finest(callbackName + " for listener: " + current);
                 }
-                current.paletteChanged();
+                callback.accept(current);
             } catch (IllegalComponentStateException e) {
                 // This DisplayChangeListener is no longer valid.  Most
                 // likely, a top-level window was dispose()d, but its

src/java.desktop/share/classes/sun/font/FreetypeFontScaler.java

@@ -25,6 +25,7 @@
 
 package sun.font;
 
+import java.awt.*;
 import java.awt.geom.GeneralPath;
 import java.awt.geom.Point2D;
 import java.awt.geom.Rectangle2D;
@@ -47,10 +48,10 @@ class FreetypeFontScaler extends FontScaler {
         /* At the moment fontmanager library depends on freetype library
            and therefore no need to load it explicitly here */
         FontManagerNativeLibrary.load();
-        initIDs(FreetypeFontScaler.class);
+        initIDs(FreetypeFontScaler.class, Toolkit.class, PhysicalFont.class);
     }
 
-    private static native void initIDs(Class<?> FFS);
+    private static native void initIDs(Class<?> FFS, Class<?> toolkitClass, Class<?> pfClass);
 
     private void invalidateScaler() throws FontScalerException {
         nativeScaler = 0;

src/java.desktop/share/classes/sun/java2d/SunGraphics2D.java

@@ -371,8 +371,9 @@ public final class SunGraphics2D
         // changes parameters according to the current scale and translate.
         final double scaleX = transform.getScaleX();
         final double scaleY = transform.getScaleY();
-        x = constrainX = (int) transform.getTranslateX();
-        y = constrainY = (int) transform.getTranslateY();
+        // [tav] rounding down affects aligning by insets in WWindowPeer.getGraphics
+        x = constrainX = (int)Math.floor(transform.getTranslateX());
+        y = constrainY = (int)Math.floor(transform.getTranslateY());
         w = Region.dimAdd(x, Region.clipScale(w, scaleX));
         h = Region.dimAdd(y, Region.clipScale(h, scaleY));
 

src/java.desktop/share/classes/sun/java2d/SunGraphicsEnvironment.java

@@ -40,15 +40,18 @@ import java.awt.Toolkit;
 import java.awt.geom.AffineTransform;
 import java.awt.image.BufferedImage;
 import java.awt.peer.ComponentPeer;
+import java.security.PrivilegedAction;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStreamReader;
 import java.security.AccessController;
 import java.util.Locale;
 import java.util.TreeMap;
 
 import sun.awt.DisplayChangedListener;
 import sun.awt.SunDisplayChanger;
-import sun.font.FontManager;
-import sun.font.FontManagerFactory;
-import sun.font.FontManagerForSGE;
+import sun.font.*;
 import sun.java2d.pipe.Region;
 import sun.security.action.GetPropertyAction;
 
@@ -65,17 +68,50 @@ public abstract class SunGraphicsEnvironment extends GraphicsEnvironment
     /** Establish the default font to be used by SG2D. */
     private final Font defaultFont = new Font(Font.DIALOG, Font.PLAIN, 12);
 
-    private static final boolean uiScaleEnabled;
+    private static final Object UI_SCALE_LOCK = new Object();
+    private static boolean uiScaleEnabled;
+    private static Boolean uiScaleEnabled_overridden;
     private static final double debugScale;
 
     static {
-        uiScaleEnabled = "true".equals(AccessController.doPrivileged(
-                new GetPropertyAction("sun.java2d.uiScale.enabled", "true")));
+        uiScaleEnabled = FontUtilities.isMacOSX ||
+                ("true".equals(AccessController.doPrivileged(
+                        new GetPropertyAction("sun.java2d.uiScale.enabled", "true"))) &&
+                (isWindows_8_1_orUpper() || FontUtilities.isLinux));
+        if (uiScaleEnabled && FontUtilities.isWindows) {
+            AccessController.doPrivileged((PrivilegedAction<Object>) () -> {
+                System.setProperty("swing.bufferPerWindow", "false"); // todo: until JRE-489 is fixed
+                return null;
+            });
+        }
         debugScale = uiScaleEnabled ? getScaleFactor("sun.java2d.uiScale") : -1;
     }
 
     protected GraphicsDevice[] screens;
 
+    private static boolean isWindows_8_1_orUpper() {
+        if (!FontUtilities.isWindows) return false;
+
+        String osVersion = AccessController.doPrivileged(new GetPropertyAction("os.version"));
+        if (osVersion == null) return false;
+
+        String[] parts = osVersion.split("\\.");
+        if (parts.length < 1) return false;
+
+        try {
+            int majorVer = Integer.parseInt(parts[0]);
+            if (majorVer > 6) return true;
+            if (majorVer < 6) return false;
+
+            if (parts.length < 2) return false;
+
+            int minorVer = Integer.parseInt(parts[1]);
+            if (minorVer >= 3) return true;
+        } catch (NumberFormatException e) {
+        }
+        return false;
+    }
+
     /**
      * Returns an array of all of the screen devices.
      */
@@ -289,7 +325,27 @@ public abstract class SunGraphicsEnvironment extends GraphicsEnvironment
     }
 
     public static boolean isUIScaleEnabled() {
-        return uiScaleEnabled;
+        Boolean enabledOverridden = uiScaleEnabled_overridden;
+        return enabledOverridden != null ? enabledOverridden : uiScaleEnabled;
+    }
+
+    /**
+     * Overrides isUIScaleEnabled() to false for fractional scale on Linux.
+     *
+     * [tav] todo: temp until fract scale is supported on Linux
+     */
+    public static boolean isUIScaleEnabled(int dpi) {
+        if (FontUtilities.isLinux) {
+            if (uiScaleEnabled_overridden == null) {
+                synchronized (UI_SCALE_LOCK) {
+                    if (uiScaleEnabled_overridden == null) {
+                        uiScaleEnabled_overridden =
+                            Double.compare(dpi / 96.0, Math.floor(dpi / 96.0)) == 0 && uiScaleEnabled;
+                    }
+                }
+            }
+        }
+        return isUIScaleEnabled();
     }
 
     public static double getDebugScale() {

src/java.desktop/share/classes/sun/swing/SwingUtilities2.java

@@ -178,8 +178,8 @@ public class SwingUtilities2 {
             Map<Object, Object> hints = (Map<Object, Object>) desktopHints;
             Object aaHint = hints.get(KEY_TEXT_ANTIALIASING);
             if (aaHint == null
-                    || aaHint == VALUE_TEXT_ANTIALIAS_OFF
-                    || aaHint == VALUE_TEXT_ANTIALIAS_DEFAULT) {
+                    /*|| aaHint == VALUE_TEXT_ANTIALIAS_OFF
+                    || aaHint == VALUE_TEXT_ANTIALIAS_DEFAULT*/) {
                 return;
             }
             map.put(KEY_TEXT_ANTIALIASING, aaHint);
@@ -1251,6 +1251,14 @@ public class SwingUtilities2 {
 
             GraphicsConfiguration gc = c.getGraphicsConfiguration();
             AffineTransform tx = (gc == null) ? null : gc.getDefaultTransform();
+            // [tav] workaround deadlock on MacOSX until fixed, JRE-226
+            if (!FontUtilities.isMacOSX && tx == null && !GraphicsEnvironment.isHeadless()) {
+                tx =  GraphicsEnvironment
+                        .getLocalGraphicsEnvironment()
+                        .getDefaultScreenDevice()
+                        .getDefaultConfiguration()
+                        .getDefaultTransform();
+            }
             Object aaHint = c.getClientProperty(KEY_TEXT_ANTIALIASING);
             return getFRCFromCache(tx, aaHint);
         }

src/java.desktop/share/native/libfontmanager/freetypeScaler.c

@@ -25,24 +25,40 @@
 
 #include "jni.h"
 #include "jni_util.h"
-#include "jlong.h"
+#include "jvm_md.h"
 #include "sunfontids.h"
 #include "sun_font_FreetypeFontScaler.h"
 
 #include <stdlib.h>
-#if !defined(_WIN32) && !defined(__APPLE_)
-#include <dlfcn.h>
+#if defined(_WIN32) || defined(MACOSX)
+#define DISABLE_FONTCONFIG
 #endif
+
 #include <math.h>
+
+#ifndef DISABLE_FONTCONFIG
+#include <dlfcn.h>
+#else
+#define DISABLE_FONTCONFIG
+#endif
+
 #include "ft2build.h"
+#include FT_LCD_FILTER_H
 #include FT_FREETYPE_H
 #include FT_GLYPH_H
 #include FT_BBOX_H
 #include FT_SIZES_H
 #include FT_OUTLINE_H
 #include FT_SYNTHESIS_H
+#include FT_MODULE_H
 #include FT_LCD_FILTER_H
 #include FT_MODULE_H
+#include FT_LCD_FILTER_H
+
+#ifndef DISABLE_FONTCONFIG
+/* Use bundled fontconfig.h for now */
+#include "fontconfig.h"
+#endif
 
 #include "fontscaler.h"
 
@@ -50,6 +66,24 @@
 #define  FloatToFTFixed(f) (FT_Fixed)((f) * (float)(ftFixed1))
 #define  FTFixedToFloat(x) ((x) / (float)(ftFixed1))
 #define  FT26Dot6ToFloat(x)  ((x) / ((float) (1<<6)))
+#define  ROUND(x) ((int) ((x<0) ? (x-0.5) : (x+0.5)))
+#define  FT26Dot6ToDouble(x)  ((x) / ((double) (1<<6)))
+#define  FT26Dot6ToInt(x) (((int)(x)) >> 6)
+#define  DEFAULT_DPI 72
+#define  MAX_DPI 1024
+#define  ADJUST_FONT_SIZE(X, DPI) (((X)*DEFAULT_DPI + ((DPI)>>1))/(DPI))
+
+#ifndef DISABLE_FONTCONFIG
+#define FONTCONFIG_DLL JNI_LIB_NAME("fontconfig")
+#define FONTCONFIG_DLL_VERSIONED VERSIONED_JNI_LIB_NAME("fontconfig", "1")
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+#ifndef TRUE
+#define TRUE  1
+#endif
 
 typedef struct {
     /* Important note:
@@ -81,7 +115,12 @@ typedef struct FTScalerContext {
     jint       fmType;        /* fractional metrics - on/off */
     jboolean   doBold;        /* perform algorithmic bolding? */
     jboolean   doItalize;     /* perform algorithmic italicizing? */
-    int        renderFlags;   /* configuration specific to particular engine */
+
+    /* Fontconfig info */
+    FT_Render_Mode  renderFlags;
+    FT_Int32        loadFlags;
+    FT_LcdFilter    lcdFilter;
+
     int        pathType;
     int        ptsz;          /* size in points */
 } FTScalerContext;
@@ -97,12 +136,135 @@ void z_error(char *s) {}
 /**************** Error handling utilities *****************/
 
 static jmethodID invalidateScalerMID;
+static jmethodID getDefaultToolkitMID;
+static jclass tkClass;
+static jmethodID getScreenResolutionMID;
+static jfieldID platNameFID;
+
+#ifndef DISABLE_FONTCONFIG
+typedef FcBool (*FcPatternAddPtrType) (FcPattern *p, const char *object, FcValue value, FcBool append);
+typedef FcBool (*FcPatternAddBoolPtrType) (FcPattern *p, const char *object, FcBool b);
+typedef FcBool (*FcPatternAddDoublePtrType) (FcPattern *p, const char *object, double d);
+typedef FcBool (*FcConfigSubstitutePtrType) (FcConfig *config, FcPattern *p, FcMatchKind kind);
+typedef void (*FcDefaultSubstitutePtrType) (FcPattern *pattern);
+typedef FcPattern* (*FcPatternCreatePtrType) ();
+typedef FcPattern* (*FcFontMatchPtrType) (FcConfig *config, FcPattern *p, FcResult *result);
+typedef void (*FcPatternDestroyPtrType) (FcPattern *p);
+typedef FcResult (*FcPatternGetBoolPtrType) (const FcPattern *p, const char *object, int n, FcBool *b);
+typedef FcResult (*FcPatternGetIntegerPtrType) (const FcPattern *p, const char *object, int n, int *i);
+#endif
+
+static void *libFontConfig = NULL;
+static jboolean logFC = JNI_FALSE;
+static jboolean logFFS = JNI_FALSE;
+
+#ifndef DISABLE_FONTCONFIG
+static FcPatternAddPtrType FcPatternAddPtr;
+static FcPatternAddBoolPtrType FcPatternAddBoolPtr;
+static FcPatternAddDoublePtrType FcPatternAddDoublePtr;
+static FcConfigSubstitutePtrType FcConfigSubstitutePtr;
+static FcDefaultSubstitutePtrType FcDefaultSubstitutePtr;
+static FcPatternCreatePtrType FcPatternCreatePtr;
+static FcFontMatchPtrType FcFontMatchPtr;
+static FcPatternDestroyPtrType FcPatternDestroyPtr;
+static FcPatternGetBoolPtrType FcPatternGetBoolPtr;
+static FcPatternGetIntegerPtrType FcPatternGetIntegerPtr;
+#endif
+
+static void* openFontConfig() {
+    void* libfontconfig = NULL;
+#ifndef DISABLE_FONTCONFIG
+    char *fcLogEnabled = getenv("OPENJDK_FFS_LOG_FC");
+
+    if (fcLogEnabled != NULL && !strcmp(fcLogEnabled, "yes")) {
+        logFC = JNI_TRUE;
+    }
+
+    char *useFC = getenv("OPENJDK_FFS_USE_FC");
+    if (useFC != NULL && !strcmp(useFC, "no")) {
+        if (logFC) fprintf(stderr, "FC_LOG: fontconfig disabled in freetypescaler\n");
+        return NULL;
+    }
+
+    libfontconfig = dlopen(FONTCONFIG_DLL_VERSIONED, RTLD_LOCAL | RTLD_LAZY);
+    if (libfontconfig == NULL) {
+        libfontconfig = dlopen(FONTCONFIG_DLL, RTLD_LOCAL | RTLD_LAZY);
+        if (libfontconfig == NULL) {
+            if (logFC) fprintf(stderr, "FC_LOG: cannot open %s\n", FONTCONFIG_DLL);
+            return NULL;
+        }
+    }
+#endif
+    return libfontconfig;
+}
 
 JNIEXPORT void JNICALL
 Java_sun_font_FreetypeFontScaler_initIDs(
-        JNIEnv *env, jobject scaler, jclass FFSClass) {
+        JNIEnv *env, jobject scaler, jclass FFSClass, jclass TKClass, jclass PFClass) {
+    char *fssLogEnabled = getenv("OPENJDK_LOG_FFS");
+
+    if (fssLogEnabled != NULL && !strcmp(fssLogEnabled, "yes")) {
+        logFFS = JNI_TRUE;
+    }
+
     invalidateScalerMID =
         (*env)->GetMethodID(env, FFSClass, "invalidateScaler", "()V");
+    getDefaultToolkitMID =
+        (*env)->GetStaticMethodID(env, TKClass, "getDefaultToolkit",
+                                  "()Ljava/awt/Toolkit;");
+    getScreenResolutionMID =
+        (*env)->GetMethodID(env, TKClass, "getScreenResolution", "()I");
+    tkClass = (*env)->NewGlobalRef(env, TKClass);
+    platNameFID = (*env)->GetFieldID(env, PFClass, "platName", "Ljava/lang/String;");
+    libFontConfig = openFontConfig();
+#ifndef DISABLE_FONTCONFIG
+    if (libFontConfig) {
+        FcPatternAddPtr = (FcPatternAddPtrType) dlsym(libFontConfig, "FcPatternAdd");
+        FcPatternAddBoolPtr = (FcPatternAddBoolPtrType) dlsym(libFontConfig, "FcPatternAddBool");
+        FcPatternAddDoublePtr = (FcPatternAddDoublePtrType) dlsym(libFontConfig, "FcPatternAddDouble");
+        FcConfigSubstitutePtr = (FcConfigSubstitutePtrType) dlsym(libFontConfig, "FcConfigSubstitute");
+        FcDefaultSubstitutePtr = (FcDefaultSubstitutePtrType)  dlsym(libFontConfig, "FcDefaultSubstitute");
+        FcPatternCreatePtr = (FcPatternCreatePtrType)  dlsym(libFontConfig, "FcPatternCreate");
+        FcFontMatchPtr = (FcFontMatchPtrType)  dlsym(libFontConfig, "FcFontMatch");
+        FcPatternDestroyPtr = (FcPatternDestroyPtrType)  dlsym(libFontConfig, "FcPatternDestroy");
+        FcPatternGetBoolPtr = (FcPatternGetBoolPtrType)  dlsym(libFontConfig, "FcPatternGetBool");
+        FcPatternGetIntegerPtr = (FcPatternGetIntegerPtrType)  dlsym(libFontConfig, "FcPatternGetInteger");
+    }
+#endif
+}
+
+static char* getPhysFontName(JNIEnv *env, jobject font2d) {
+    jstring jstr;
+    jstr = (*env)->GetObjectField(env, font2d, platNameFID);
+    return (char*)(*env)->GetStringUTFChars(env, jstr, NULL);
+}
+
+static int getScreenResolution(JNIEnv *env) {
+    jthrowable exc;
+    jclass tk = (*env)->CallStaticObjectMethod(
+        env, tkClass, getDefaultToolkitMID);
+    int dpi = (*env)->CallIntMethod(env, tk, getScreenResolutionMID);
+
+    /* Test if there is no exception here (can get java.awt.HeadlessException)
+     * Fallback to default DPI otherwise
+     */
+    exc = (*env)->ExceptionOccurred(env);
+    if (exc) {
+        (*env)->ExceptionClear(env);
+        return DEFAULT_DPI;
+    }
+
+    /* Some configurations report invalid dpi settings */
+    if (dpi > MAX_DPI) {
+        if (logFFS) {
+            fprintf(stderr, "FFS_LOG: Invalid dpi reported (%d) replaced with default (%d)\n", dpi, DEFAULT_DPI);
+        }
+        return DEFAULT_DPI;
+    }
+    if (logFFS) {
+        fprintf(stderr, "FFS_LOG: Screen Resolution (%d) dpi\n", dpi);
+    }
+    return dpi;
 }
 
 static void freeNativeResources(JNIEnv *env, FTScalerInfo* scalerInfo) {
@@ -265,7 +427,7 @@ static void setInterpreterVersion(FT_Library library) {
     const char* property = "interpreter-version";
 
     /* If some one is setting this, don't override it */
-    if (props != NULL && strstr(props, property)) {
+    if (props != NULL && strstr(property, props)) {
         return;
     }
     /*
@@ -537,6 +699,33 @@ Java_sun_font_FreetypeFontScaler_createScalerContextNative(
     return ptr_to_jlong(context);
 }
 
+#ifndef DISABLE_FONTCONFIG
+static void setupLoadRenderFlags(FTScalerContext *context, int fcHintStyle, FcBool fcAutohint, FcBool fcAutohintSet,
+                                 FT_Int32 fcLoadFlags, FT_Render_Mode fcRenderFlags)
+{
+    if (!fcAutohintSet || fcAutohint) {
+        switch (fcHintStyle) {
+            case FC_HINT_NONE:
+                context->loadFlags = FT_LOAD_NO_HINTING;
+                break;
+            case FC_HINT_SLIGHT:
+                context->loadFlags = (fcRenderFlags != FT_RENDER_MODE_MONO) ? FT_LOAD_TARGET_LIGHT : FT_LOAD_NO_HINTING;
+                break;
+            default:
+                context->loadFlags = fcLoadFlags;
+        }
+    } else {
+        context->loadFlags = fcLoadFlags;
+    }
+
+    context->renderFlags = fcRenderFlags;
+
+    if (fcAutohintSet && fcAutohint) {
+        context->loadFlags |= FT_LOAD_FORCE_AUTOHINT;
+    }
+}
+#endif
+
 // values used by FreeType (as of version 2.10.1) for italics transformation matrix in FT_GlyphSlot_Oblique
 #define FT_MATRIX_ONE 0x10000
 #define FT_MATRIX_OBLIQUE_XY 0x0366A
@@ -559,30 +748,220 @@ static void setupTransform(FT_Matrix* target, FTScalerContext *context) {
     }
 }
 
-static int setupFTContext(JNIEnv *env,
-                          jobject font2D,
-                          FTScalerInfo *scalerInfo,
-                          FTScalerContext *context) {
+static int setupFTContext(JNIEnv *env, jobject font2D, FTScalerInfo *scalerInfo, FTScalerContext *context,
+                          FT_Bool configureFont) {
     FT_Matrix matrix;
     int errCode = 0;
-
     scalerInfo->env = env;
     scalerInfo->font2D = font2D;
 
     if (context != NULL) {
         setupTransform(&matrix, context);
         FT_Set_Transform(scalerInfo->face, &matrix, NULL);
+        FT_UInt dpi = (FT_UInt) getScreenResolution(env);
 
-        errCode = FT_Set_Char_Size(scalerInfo->face, 0, context->ptsz, 72, 72);
+        errCode = FT_Set_Char_Size(scalerInfo->face, 0, ADJUST_FONT_SIZE(context->ptsz, dpi), dpi, dpi);
+        if (errCode) return errCode;
 
-        if (errCode == 0) {
-            errCode = FT_Activate_Size(scalerInfo->face->size);
+        errCode = FT_Activate_Size(scalerInfo->face->size);
+        if (errCode) return errCode;
+        if (configureFont) {
+            context->renderFlags = FT_RENDER_MODE_NORMAL;
+            context->lcdFilter = FT_LCD_FILTER_NONE;
+            context->loadFlags = FT_LOAD_DEFAULT;
+
+            if (libFontConfig == NULL) {
+                if (context->aaType == TEXT_AA_OFF) {
+                    context->loadFlags = FT_LOAD_TARGET_MONO;
+                } else if (context->aaType == TEXT_AA_ON) {
+                    context->loadFlags = FT_LOAD_TARGET_LIGHT;
+                } else {
+                    context->lcdFilter = FT_LCD_FILTER_LIGHT;
+                    if (context->aaType == TEXT_AA_LCD_HRGB ||
+                        context->aaType == TEXT_AA_LCD_HBGR) {
+                        context->loadFlags = FT_LOAD_TARGET_LCD;
+                    } else {
+                        context->loadFlags = FT_LOAD_TARGET_LCD_V;
+                    }
+                }
+                context->renderFlags = FT_LOAD_TARGET_MODE(context->loadFlags);
+                return 0;
+            }
+#ifndef DISABLE_FONTCONFIG
+            FcPattern *fcPattern = 0;
+            fcPattern = (*FcPatternCreatePtr)();
+            FcValue fcValue;
+            fcValue.type = FcTypeString;
+            char *fontName = getPhysFontName(env, font2D);
+
+            if (logFC) fprintf(stderr, "FC_LOG: %s ", fontName);
+
+            fcValue.u.s = (const FcChar8*)fontName;
+            (*FcPatternAddPtr)(fcPattern, FC_FILE, fcValue, FcTrue);
+            (*FcPatternAddBoolPtr)(fcPattern, FC_SCALABLE, FcTrue);
+            double fcSize = FT26Dot6ToDouble(ADJUST_FONT_SIZE(context->ptsz, dpi));
+            (*FcPatternAddDoublePtr)(fcPattern, FC_SIZE, fcSize);
+
+            if (logFC) fprintf(stderr, " size=%f", fcSize);
+
+            (*FcConfigSubstitutePtr)(0, fcPattern, FcMatchPattern);
+            (*FcConfigSubstitutePtr)(0, fcPattern, FcMatchFont);
+            (*FcDefaultSubstitutePtr)(fcPattern);
+            FcResult matchResult = FcResultNoMatch;
+            FcPattern *resultPattern = 0;
+            resultPattern = (*FcFontMatchPtr)(0, fcPattern, &matchResult);
+            if (matchResult != FcResultMatch) {
+                (*FcPatternDestroyPtr)(fcPattern);
+                if (logFC) fprintf(stderr, " - NOT FOUND\n");
+                return 1;
+            }
+            if (logFC) fprintf(stderr, "\nFC_LOG:   ");
+            (*FcPatternDestroyPtr)(fcPattern);
+            FcPattern *pattern = resultPattern;
+
+            FcBool fcHinting = FcFalse;
+            FcBool fcHintingSet = (*FcPatternGetBoolPtr)(pattern, FC_HINTING, 0, &fcHinting) == FcResultMatch;
+
+            if (logFC && fcHintingSet) fprintf(stderr, "FC_HINTING(%d) ", fcHinting);
+
+            int fcHintStyle = FC_HINT_NONE;
+            FcBool fcHintStyleSet = (*FcPatternGetIntegerPtr)(pattern, FC_HINT_STYLE, 0, &fcHintStyle) == FcResultMatch;
+
+            if (logFC && fcHintStyleSet) {
+                switch (fcHintStyle) {
+                    case FC_HINT_NONE:
+                        fprintf(stderr, "FC_HINT_NONE ");
+                        break;
+                    case FC_HINT_SLIGHT:
+                        fprintf(stderr, "FC_HINT_SLIGHT ");
+                        break;
+                    case FC_HINT_MEDIUM:
+                        fprintf(stderr, "FC_HINT_MEDIUM ");
+                        break;
+                    case FC_HINT_FULL:
+                        fprintf(stderr, "FC_HINT_FULL ");
+                        break;
+                    default:
+                        fprintf(stderr, "FC_HINT_UNKNOWN ");
+                        break;
+                }
+            }
+
+            if (fcHintingSet && !fcHinting) {
+                fcHintStyleSet = FcTrue;
+                fcHintStyle = FC_HINT_NONE;
+            }
+
+            if (fcHintStyleSet && fcHintStyle == FC_HINT_NONE) {
+                fcHinting = FcFalse;
+            }
+
+            FcBool fcAntialias = FcFalse;
+            FcBool fcAntialiasSet = (*FcPatternGetBoolPtr)(pattern, FC_ANTIALIAS, 0, &fcAntialias) == FcResultMatch;
+
+            if (logFC) {
+                switch(context->aaType) {
+                    case TEXT_AA_ON:
+                        fprintf(stderr, "JDK_AA_ON ");
+                        break;
+                    case TEXT_AA_OFF:
+                        fprintf(stderr, "JDK_AA_OFF ");
+                        break;
+                    case TEXT_AA_LCD_HRGB:
+                        fprintf(stderr, "JDK_AA_LCD_HRGB ");
+                        break;
+                    case TEXT_AA_LCD_HBGR:
+                        fprintf(stderr, "JDK_AA_LCD_HBGR ");
+                        break;
+                    default:
+                        fprintf(stderr, "JDK_AA_UNKNOWN ");
+                        break;
+                }
+                if (fcAntialiasSet) fprintf(stderr, "FC_ANTIALIAS(%d) ", fcAntialias);
+            }
+
+            FcBool fcAutohint = FcFalse;
+            FcBool fcAutohintSet = (*FcPatternGetBoolPtr)(pattern, FC_AUTOHINT, 0, &fcAutohint) == FcResultMatch;
+
+            if (logFC && fcAutohintSet) fprintf(stderr, "FC_AUTOHINT(%d) ", fcAutohint);
+
+            if (context->aaType == TEXT_AA_ON) { // Greyscale AA
+                setupLoadRenderFlags(context, fcHintStyle, fcAutohint, fcAutohintSet, FT_LOAD_DEFAULT, FT_RENDER_MODE_NORMAL);
+            }
+            else if (context->aaType == TEXT_AA_OFF) { // No AA
+                setupLoadRenderFlags(context, fcHintStyle, fcAutohint, fcAutohintSet, FT_LOAD_TARGET_MONO, FT_RENDER_MODE_MONO);
+            } else {
+                int fcRGBA = FC_RGBA_UNKNOWN;
+                if (fcAntialiasSet && fcAntialias) {
+                    if ((*FcPatternGetIntegerPtr)(pattern, FC_RGBA, 0, &fcRGBA) == FcResultMatch) {
+                        switch (fcRGBA) {
+                            case FC_RGBA_RGB:
+                            case FC_RGBA_BGR:
+                                if (logFC) fprintf(stderr, fcRGBA == FC_RGBA_RGB ? "FC_RGBA_RGB " : "FC_RGBA_BGR ");
+                                setupLoadRenderFlags(context, fcHintStyle, fcAutohint, fcAutohintSet,
+                                                     FT_LOAD_TARGET_LCD, FT_RENDER_MODE_LCD);
+                                break;
+                            case FC_RGBA_VRGB:
+                            case FC_RGBA_VBGR:
+                                if (logFC) fprintf(stderr, fcRGBA == FC_RGBA_VRGB ? "FC_RGBA_VRGB " : "FC_RGBA_VBGR ");
+                                setupLoadRenderFlags(context, fcHintStyle, fcAutohint, fcAutohintSet,
+                                                     FT_LOAD_TARGET_LCD_V, FT_RENDER_MODE_LCD_V);
+                                break;
+                            case FC_RGBA_NONE:
+                                if (logFC) fprintf(stderr, "FC_RGBA_NONE ");
+                                break;
+                            default:
+                                if (logFC) fprintf(stderr, "FC_RGBA_UNKNOWN ");
+                                break;
+                        }
+                    }
+                }
+                if (fcRGBA == FC_RGBA_UNKNOWN) {
+                    if (context->aaType == TEXT_AA_LCD_HRGB ||
+                        context->aaType == TEXT_AA_LCD_HBGR) {
+                        setupLoadRenderFlags(context, fcHintStyle, fcAutohint, fcAutohintSet,
+                                             FT_LOAD_TARGET_LCD, FT_RENDER_MODE_LCD);
+                    } else {
+                        setupLoadRenderFlags(context, fcHintStyle, fcAutohint, fcAutohintSet,
+                                             FT_LOAD_TARGET_LCD_V, FT_RENDER_MODE_LCD_V);
+                    }
+                }
+            }
+
+            FT_LcdFilter fcLCDFilter;
+            FcBool fcLCDFilterSet = (*FcPatternGetIntegerPtr)(pattern, FC_LCD_FILTER, 0, (int*) &fcLCDFilter) == FcResultMatch;
+            context->lcdFilter = FT_LCD_FILTER_DEFAULT;
+            if (fcLCDFilterSet) {
+                switch (fcLCDFilter) {
+                    case FC_LCD_NONE:
+                        if (logFC) fprintf(stderr, "FC_LCD_NONE");
+                        context->lcdFilter = FT_LCD_FILTER_NONE;
+                        break;
+                    case FC_LCD_LIGHT:
+                        if (logFC) fprintf(stderr, "FC_LCD_LIGHT");
+                        context->lcdFilter = FT_LCD_FILTER_LIGHT;
+                        break;
+                    case FC_LCD_LEGACY:
+                        if (logFC) fprintf(stderr, "FC_LCD_LEGACY");
+                        context->lcdFilter = FT_LCD_FILTER_LEGACY;
+                        break;
+                    case FC_LCD_DEFAULT:
+                        if (logFC) fprintf(stderr, "FC_LCD_DEFAULT");
+                        break;
+                    default:
+                        if (logFC) fprintf(stderr, "FC_LCD_UNKNOWN");
+                        ;
+                }
+            }
+            (*FcPatternDestroyPtr)(pattern);
+            if (logFC) fprintf(stderr, "\n");
+#endif
         }
 
         FT_Library_SetLcdFilter(scalerInfo->library, FT_LCD_FILTER_DEFAULT);
     }
 
-    return errCode;
+    return 0;
 }
 
 // using same values as for the transformation matrix
@@ -599,7 +978,7 @@ Java_sun_font_FreetypeFontScaler_getFontMetricsNative(
         jlong pScalerContext, jlong pScaler) {
 
     jobject metrics;
-    jfloat ax, ay, dx, dy, bx, by, lx, ly, mx, my;
+    jfloat ax, ay, dx, dy, bx, by, lx, ly, mx, my, txx, txy, tyx, tyy;
     jfloat f0 = 0.0;
     FTScalerContext *context =
         (FTScalerContext*) jlong_to_ptr(pScalerContext);
@@ -615,7 +994,7 @@ Java_sun_font_FreetypeFontScaler_getFontMetricsNative(
                                  f0, f0, f0, f0, f0, f0, f0, f0, f0, f0);
     }
 
-    errCode = setupFTContext(env, font2D, scalerInfo, context);
+    errCode = setupFTContext(env, font2D, scalerInfo, context, FALSE);
 
     if (errCode) {
         metrics = (*env)->NewObject(env,
@@ -678,6 +1057,20 @@ Java_sun_font_FreetypeFontScaler_getFontMetricsNative(
                              scalerInfo->face->size->metrics.y_scale));
     my = 0;
 
+    // apply transformation matrix
+    txx = (jfloat)  FTFixedToFloat(context->transform.xx);
+    txy = (jfloat) -FTFixedToFloat(context->transform.xy);
+    tyx = (jfloat) -FTFixedToFloat(context->transform.yx);
+    tyy = (jfloat)  FTFixedToFloat(context->transform.yy);
+    ax = txy * ay;
+    ay = tyy * ay;
+    dx = txy * dy;
+    dy = tyy * dy;
+    lx = txy * ly;
+    ly = tyy * ly;
+    my = tyx * mx;
+    mx = txx * mx;
+
     metrics = (*env)->NewObject(env,
         sunFontIDs.strikeMetricsClass,
         sunFontIDs.strikeMetricsCtr,
@@ -900,18 +1293,52 @@ static jlong
     GlyphInfo *glyphInfo;
     int renderFlags = FT_LOAD_DEFAULT, target;
     FT_GlyphSlot ftglyph;
+    FT_Library library;
 
     FTScalerContext* context =
         (FTScalerContext*) jlong_to_ptr(pScalerContext);
     FTScalerInfo *scalerInfo =
              (FTScalerInfo*) jlong_to_ptr(pScaler);
 
-    if (isNullScalerContext(context) || scalerInfo == NULL) {
-        return ptr_to_jlong(getNullGlyphImage());
+    if (logFFS) {
+        fprintf(stderr, "FFS_LOG: getGlyphImageNative '%c'(%d) ",
+                (glyphCode >= 0x20 && glyphCode <=0x7E)? glyphCode : ' ',
+                glyphCode);
     }
 
-    error = setupFTContext(env, font2D, scalerInfo, context);
+    if (isNullScalerContext(context) || scalerInfo == NULL) {
+        if (logFFS) fprintf(stderr, "FFS_LOG: NULL context or info\n");
+        return ptr_to_jlong(getNullGlyphImage());
+    }
+    else if (logFFS){
+        char* aaTypeStr;
+        switch (context->aaType) {
+            case TEXT_AA_ON:
+                aaTypeStr = "AA_ON";
+                break;
+            case TEXT_AA_OFF:
+                aaTypeStr = "AA_OFF";
+                break;
+            case TEXT_AA_LCD_HBGR:
+                aaTypeStr = "AA_LCD_HBGR";
+                break;
+            case TEXT_AA_LCD_VBGR:
+                aaTypeStr = "AA_LCD_VBGR";
+                break;
+            case TEXT_AA_LCD_HRGB:
+                aaTypeStr = "AA_LCD_HRGB";
+                break;
+            default:
+                aaTypeStr = "AA_UNKNOWN";
+                break;
+        }
+        fprintf(stderr, "%s size=%.2f\n", aaTypeStr,
+                ((double)context->ptsz)/64.0);
+    }
+
+    error = setupFTContext(env, font2D, scalerInfo, context, TRUE);
     if (error) {
+        if (logFFS) fprintf(stderr, "FFS_LOG: Cannot setup FT context\n");
         invalidateJavaScaler(env, scaler, scalerInfo);
         return ptr_to_jlong(getNullGlyphImage());
     }
@@ -957,6 +1384,8 @@ static jlong
     }
 
     ftglyph = scalerInfo->face->glyph;
+    library = ftglyph->library;
+    FT_Library_SetLcdFilter (library, context->lcdFilter);
 
     /* apply styles */
     if (context->doBold) { /* if bold style */
@@ -1107,7 +1536,7 @@ Java_sun_font_FreetypeFontScaler_disposeNativeScaler(
     /* Freetype functions *may* cause callback to java
        that can use cached values. Make sure our cache is up to date.
        NB: scaler context is not important at this point, can use NULL. */
-    int errCode = setupFTContext(env, font2D, scalerInfo, NULL);
+    int errCode = setupFTContext(env, font2D, scalerInfo, NULL, FALSE);
     if (errCode) {
         return;
     }
@@ -1170,7 +1599,7 @@ Java_sun_font_FreetypeFontScaler_getGlyphCodeNative(
     /* Freetype functions *may* cause callback to java
        that can use cached values. Make sure our cache is up to date.
        Scaler context is not important here, can use NULL. */
-    errCode = setupFTContext(env, font2D, scalerInfo, NULL);
+    errCode = setupFTContext(env, font2D, scalerInfo, NULL, FALSE);
     if (errCode) {
         return 0;
     }
@@ -1193,7 +1622,7 @@ static FT_Outline* getFTOutline(JNIEnv* env, jobject font2D,
         return NULL;
     }
 
-    error = setupFTContext(env, font2D, scalerInfo, context);
+    error = setupFTContext(env, font2D, scalerInfo, context, TRUE);
     if (error) {
         return NULL;
     }
@@ -1635,3 +2064,12 @@ Java_sun_font_FreetypeFontScaler_getGlyphPointNative(
     return (*env)->NewObject(env, sunFontIDs.pt2DFloatClass,
                              sunFontIDs.pt2DFloatCtr, x, y);
 }
+
+JNIEXPORT void JNICALL
+JNI_OnUnload(JavaVM *vm, void *reserved) {
+    if (libFontConfig != NULL) {
+#ifndef DISABLE_FONTCONFIG
+        dlclose(libFontConfig);
+#endif
+    }
+}

src/java.desktop/unix/classes/sun/awt/X11/XToolkit.java

@@ -347,7 +347,10 @@ public final class XToolkit extends UNIXToolkit implements Runnable {
             XToolkit.addEventDispatcher(XToolkit.getDefaultRootWindow(), new XEventDispatcher() {
                 @Override
                 public void dispatchEvent(XEvent ev) {
-                    if (ev.get_type() == XConstants.ConfigureNotify) {
+                    if (ev.get_type() == XConstants.ConfigureNotify ||
+                        (ev.get_type() == XConstants.PropertyNotify &&
+                         ev.get_xproperty().get_atom() == XWM.XA_NET_DESKTOP_GEOMETRY.getAtom())) // possible DPI change
+                    {
                         awtUnlock();
                         try {
                             ((X11GraphicsEnvironment)GraphicsEnvironment.

src/java.desktop/unix/classes/sun/awt/X11/XWM.java

@@ -89,6 +89,9 @@ final class XWM
     static final XAtom XA_NET_FRAME_EXTENTS = new XAtom();
     static final XAtom XA_NET_REQUEST_FRAME_EXTENTS = new XAtom();
 
+/* Root window */
+    static final XAtom XA_NET_DESKTOP_GEOMETRY = new XAtom();
+
     static final int
         UNDETERMINED_WM = 1,
         NO_WM = 2,
@@ -206,6 +209,7 @@ final class XWM
             { XA_MWM_HINTS,                  "_MOTIF_WM_HINTS"               },
             { XA_NET_FRAME_EXTENTS,          "_NET_FRAME_EXTENTS"            },
             { XA_NET_REQUEST_FRAME_EXTENTS,  "_NET_REQUEST_FRAME_EXTENTS"    },
+            { XA_NET_DESKTOP_GEOMETRY,       "_NET_DESKTOP_GEOMETRY"         }
         };
 
         String[] names = new String[atomInitList.length];

src/java.desktop/unix/classes/sun/awt/X11GraphicsDevice.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 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
@@ -37,6 +37,7 @@ import java.security.PrivilegedAction;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 import sun.awt.util.ThreadGroupUtils;
 import sun.java2d.SunGraphicsEnvironment;
@@ -68,10 +69,27 @@ public final class X11GraphicsDevice extends GraphicsDevice
     private DisplayMode origDisplayMode;
     private boolean shutdownHookRegistered;
     private int scale;
+    private final AtomicBoolean isScaleFactorDefault = new AtomicBoolean(false);
+    private static volatile int xrmXftDpi;
+    private static volatile int xftDpi;
+    private static final int GDK_SCALE;
+    private static final double GDK_DPI_SCALE;
+    private static final double GDK_SCALE_MULTIPLIER;
 
     public X11GraphicsDevice(int screennum) {
         this.screen = screennum;
-        this.scale = initScaleFactor();
+        int scaleFactor = initScaleFactor(-1);
+        synchronized (isScaleFactorDefault) {
+            isScaleFactorDefault.set(scaleFactor == -1);
+            this.scale = isScaleFactorDefault.get() ? 1 : scaleFactor;
+        }
+    }
+
+    static {
+        xrmXftDpi = getXrmXftDpi(-1);
+        GDK_SCALE = (int)getGdkScale("GDK_SCALE", -1);
+        GDK_DPI_SCALE = getGdkScale("GDK_DPI_SCALE", -1);
+        GDK_SCALE_MULTIPLIER = GDK_SCALE != -1 ? GDK_SCALE * (GDK_DPI_SCALE != -1 ? GDK_DPI_SCALE : 1) : 1;
     }
 
     /**
@@ -295,8 +313,11 @@ public final class X11GraphicsDevice extends GraphicsDevice
     private static native void configDisplayMode(int screen,
                                                  int width, int height,
                                                  int displayMode);
-    private static native double getNativeScaleFactor(int screen);
+    private static native void resetNativeData(int screen);
     private native Rectangle pGetBounds(int screenNum);
+    private static native double getNativeScaleFactor(int screen, double defValue);
+    private static native double getGdkScale(String name, double defValue);
+    private static native int getXrmXftDpi(int defValue);
 
     /**
      * Returns true only if:
@@ -410,10 +431,7 @@ public final class X11GraphicsDevice extends GraphicsDevice
 
     @Override
     public synchronized DisplayMode[] getDisplayModes() {
-        if (!isFullScreenSupported()
-                || ((X11GraphicsEnvironment) GraphicsEnvironment
-                            .getLocalGraphicsEnvironment()).runningXinerama()) {
-            // only the current mode will be returned
+        if (!isFullScreenSupported()) {
             return super.getDisplayModes();
         }
         ArrayList<DisplayMode> modes = new ArrayList<DisplayMode>();
@@ -507,7 +525,8 @@ public final class X11GraphicsDevice extends GraphicsDevice
      */
     @Override
     public synchronized void displayChanged() {
-        scale = initScaleFactor();
+        xrmXftDpi = getXrmXftDpi(-1);
+        scale = initScaleFactor(1);
         // On X11 the visuals do not change, and therefore we don't need
         // to reset the defaultConfig, config, doubleBufferVisuals,
         // neither do we need to reset the native data.
@@ -537,24 +556,66 @@ public final class X11GraphicsDevice extends GraphicsDevice
         return scale;
     }
 
-    public int getNativeScale() {
-        return (int)Math.round(getNativeScaleFactor(screen));
+    private double getNativeScale() {
+        isXrandrExtensionSupported();
+        return getNativeScaleFactor(screen, -1);
     }
 
-    private int initScaleFactor() {
-
-        if (SunGraphicsEnvironment.isUIScaleEnabled()) {
+    public static void setXftDpi(int dpi) {
+        xftDpi = dpi;
+        boolean uiScaleEnabled = SunGraphicsEnvironment.isUIScaleEnabled(dpi);
+        double xftDpiScale = uiScaleEnabled ? xftDpi / 96.0 : 1.0;
+        for (GraphicsDevice gd : GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices()) {
+            X11GraphicsDevice x11gd = (X11GraphicsDevice)gd;
+            synchronized (x11gd.isScaleFactorDefault) {
+                if (x11gd.isScaleFactorDefault.get() || !uiScaleEnabled) {
+                    x11gd.scale = (int)Math.round(xftDpiScale * (uiScaleEnabled ? GDK_SCALE_MULTIPLIER : 1));
+                    x11gd.isScaleFactorDefault.set(false);
+                }
+            }
+        }
+    }
 
+    private int initScaleFactor(int defValue) {
+        boolean uiScaleEnabled = SunGraphicsEnvironment.isUIScaleEnabled();
+        if (uiScaleEnabled) {
             double debugScale = SunGraphicsEnvironment.getDebugScale();
 
             if (debugScale >= 1) {
                 return (int) debugScale;
             }
-            int nativeScale = getNativeScale();
-            return nativeScale >= 1 ? nativeScale : 1;
+            double gdkScaleMult = uiScaleEnabled ? GDK_SCALE_MULTIPLIER : 1;
+            double nativeScale = getNativeScale();
+            if (nativeScale > 0) {
+                return (int)Math.round(nativeScale * gdkScaleMult);
+            }
+            if (xrmXftDpi > 0) {
+                return (int)Math.round((xrmXftDpi / 96.0) * gdkScaleMult);
+            }
+            if (xftDpi > 0) {
+                return (int)Math.round((xftDpi / 96.0) * gdkScaleMult);
+            }
         }
+        return defValue;
+    }
 
-        return 1;
+    /**
+     * Used externally for diagnostic purpose.
+     */
+    public String[][] getDpiInfo() {
+        int dpi = xrmXftDpi != -1 ? xrmXftDpi : xftDpi;
+        String xftDpiStr = dpi != -1 ? String.valueOf(dpi) : "undefined";
+        double gsettingsScale = getNativeScaleFactor(screen, -1);
+        String gsettingsScaleStr = gsettingsScale != -1 ? String.valueOf(gsettingsScale) : "undefined";
+        String gdkScaleStr = GDK_SCALE != -1 ? String.valueOf(GDK_SCALE) : "undefined";
+        String gdkDpiScaleStr = GDK_DPI_SCALE != -1 ? String.valueOf(GDK_DPI_SCALE) : "undefined";
+
+        return new String[][] {
+                {"Xft.DPI", xftDpiStr, "Font DPI (X resources value)"},
+                {"GSettings scale factor", gsettingsScaleStr, "http://wiki.archlinux.org/index.php/HiDPI"},
+                {"GDK_SCALE", gdkScaleStr, "http://developer.gnome.org/gtk3/stable/gtk-x11.html"},
+                {"GDK_DPI_SCALE", gdkDpiScaleStr, "http://developer.gnome.org/gtk3/stable/gtk-x11.html"}
+        };
     }
 
     /**

src/java.desktop/unix/native/common/awt/systemscale/systemScale.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 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
@@ -24,30 +24,222 @@
  */
 
 #include "systemScale.h"
+#include "jni.h"
+#include "jni_util.h"
+#include "jvm_md.h"
+#include <dlfcn.h>
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <locale.h>
 
-static int getScale(const char *name) {
-    char *uiScale = getenv(name);
-    if (uiScale != NULL) {
-        double scale = strtod(uiScale, NULL);
-        if (scale < 1) {
-            return -1;
+#ifdef __APPLE__
+# include <xlocale.h>
+#endif
+
+typedef void* g_settings_schema_source_get_default();
+typedef void* g_settings_schema_source_ref(void *);
+typedef void g_settings_schema_source_unref(void *);
+typedef void* g_settings_schema_source_lookup(void *, char *, int);
+typedef int g_settings_schema_has_key(void *, char *);
+typedef void* g_settings_new_full(void *, void *, char *);
+typedef void* g_settings_get_value(void *, char *);
+typedef int g_variant_is_of_type(void *, char *);
+typedef unsigned long g_variant_n_children(void *);
+typedef void* g_variant_get_child_value(void *, unsigned long);
+typedef void  g_variant_unref(void *);
+typedef char*  g_variant_get_string(void *, unsigned long *);
+typedef int  g_variant_get_int32(void *);
+typedef unsigned g_variant_get_uint32(void *);
+typedef double  g_variant_get_double(void *);
+
+static g_settings_schema_has_key* fp_g_settings_schema_has_key;
+static g_settings_new_full* fp_g_settings_new_full;
+static g_settings_get_value* fp_g_settings_get_value;
+static g_variant_is_of_type* fp_g_variant_is_of_type;
+static g_variant_n_children* fp_g_variant_n_children;
+static g_variant_get_child_value* fp_g_variant_get_child_value;
+static g_variant_get_string* fp_g_variant_get_string;
+static g_variant_get_int32* fp_g_variant_get_int32;
+static g_variant_get_uint32* fp_g_variant_get_uint32;
+static g_variant_get_double* fp_g_variant_get_double;
+static g_variant_unref* fp_g_variant_unref;
+
+static void* get_schema_value(char *name, char *key) {
+    static void *lib_handle;
+    static int initialized = 0;
+    static void * default_schema;
+    static g_settings_schema_source_lookup* schema_lookup;
+    void *schema = NULL, *fp = NULL;
+    if (!initialized) {
+        initialized = 1;
+        lib_handle = dlopen(JNI_LIB_NAME("gio-2.0"), RTLD_GLOBAL | RTLD_LAZY);
+        if (!lib_handle) {
+            CHECK_NULL_RETURN(lib_handle =
+                          dlopen(VERSIONED_JNI_LIB_NAME("gio-2.0", "0"),
+                                                RTLD_GLOBAL | RTLD_LAZY), NULL);
         }
-        return (int) scale;
+        CHECK_NULL_RETURN(fp_g_settings_schema_has_key =
+                          (g_settings_schema_has_key*)
+                          dlsym(lib_handle, "g_settings_schema_has_key"), NULL);
+        CHECK_NULL_RETURN(fp_g_settings_new_full =
+                          (g_settings_new_full*)
+                          dlsym(lib_handle, "g_settings_new_full"), NULL);
+        CHECK_NULL_RETURN(fp_g_settings_get_value =
+                          (g_settings_get_value*)
+                          dlsym(lib_handle, "g_settings_get_value"), NULL);
+        CHECK_NULL_RETURN(fp_g_variant_is_of_type =
+                          (g_variant_is_of_type*)
+                          dlsym(lib_handle, "g_variant_is_of_type"), NULL);
+        CHECK_NULL_RETURN(fp_g_variant_n_children =
+                          (g_variant_n_children*)
+                          dlsym(lib_handle, "g_variant_n_children"), NULL);
+        CHECK_NULL_RETURN(fp_g_variant_get_child_value =
+                          (g_variant_get_child_value*)
+                          dlsym(lib_handle, "g_variant_get_child_value"), NULL);
+        CHECK_NULL_RETURN(fp_g_variant_get_string =
+                          (g_variant_get_string*)
+                          dlsym(lib_handle, "g_variant_get_string"), NULL);
+        CHECK_NULL_RETURN(fp_g_variant_get_int32 =
+                          (g_variant_get_int32*)
+                          dlsym(lib_handle, "g_variant_get_int32"), NULL);
+        CHECK_NULL_RETURN(fp_g_variant_get_uint32 =
+                          (g_variant_get_uint32*)
+                          dlsym(lib_handle, "g_variant_get_uint32"), NULL);
+        CHECK_NULL_RETURN(fp_g_variant_get_double =
+                          (g_variant_get_double*)
+                          dlsym(lib_handle, "g_variant_get_double"), NULL);
+        CHECK_NULL_RETURN(fp_g_variant_unref =
+                          (g_variant_unref*)
+                          dlsym(lib_handle, "g_variant_unref"), NULL);
+
+        fp = dlsym(lib_handle, "g_settings_schema_source_get_default");
+        if (fp) {
+            default_schema = ((g_settings_schema_source_get_default*)fp)();
+        }
+        if (default_schema) {
+            fp = dlsym(lib_handle, "g_settings_schema_source_ref");
+            if (fp) {
+                ((g_settings_schema_source_ref*)fp)(default_schema);
+            }
+        }
+        schema_lookup = (g_settings_schema_source_lookup*)
+                           dlsym(lib_handle, "g_settings_schema_source_lookup");
     }
-    return -1;
+
+    if (!default_schema || !schema_lookup) {
+        return NULL;
+    }
+
+    schema = schema_lookup(default_schema, name, 1);
+    if (schema) {
+        if (fp_g_settings_schema_has_key(schema, key)) {
+            void *settings = fp_g_settings_new_full(schema, NULL, NULL);
+            if (settings) {
+                return fp_g_settings_get_value(settings, key);
+            }
+        }
+    }
+    return NULL;
 }
 
-double getNativeScaleFactor() {
+
+static double getDesktopScale(char *output_name) {
+    double result = -1;
+    if(output_name) {
+        void *value = get_schema_value("com.ubuntu.user-interface",
+                                                                "scale-factor");
+        if (value) {
+            if(fp_g_variant_is_of_type(value, "a{si}")) {
+                int num = fp_g_variant_n_children(value);
+                int i = 0;
+                while (i < num) {
+                    void *entry = fp_g_variant_get_child_value(value, i++);
+                    if (entry) {
+                        void *screen = fp_g_variant_get_child_value(entry, 0);
+                        void *scale = fp_g_variant_get_child_value(entry, 1);
+                        if (screen && scale) {
+                            char *name = fp_g_variant_get_string(screen, NULL);
+                            if (name && !strcmp(name, output_name)) {
+                                result = fp_g_variant_get_int32(scale) / 8.;
+                            }
+                            fp_g_variant_unref(screen);
+                            fp_g_variant_unref(scale);
+                        }
+                        fp_g_variant_unref(entry);
+                    }
+                    if (result > 0) {
+                        break;
+                    }
+                }
+            }
+            fp_g_variant_unref(value);
+        }
+        /* [tav]
+        if (result > 0) {
+            value = get_schema_value("com.canonical.Unity.Interface",
+                                                           "text-scale-factor");
+            if (value && fp_g_variant_is_of_type(value, "d")) {
+                result *= fp_g_variant_get_double(value);
+                fp_g_variant_unref(value);
+            }
+        }*/
+    }
+
+    if (result <= 0) {
+        void *value = get_schema_value("org.gnome.desktop.interface",
+                                                         "scaling-factor");
+        if (value && fp_g_variant_is_of_type(value, "u")) {
+            result = fp_g_variant_get_uint32(value);
+            fp_g_variant_unref(value);
+        }
+    }
+
+    /* [tav]
+    if (result <= 0) {
+        void *value = get_schema_value("org.gnome.desktop.interface",
+                                                         "text-scaling-factor");
+        if (value && fp_g_variant_is_of_type(value, "d")) {
+            result = fp_g_variant_get_double(value);
+            fp_g_variant_unref(value);
+        }
+    }*/
+
+    return result;
+
+}
+
+double getScaleEnvVar(const char *name, double default_value) {
+    char *uiScale = getenv(name);
+    if (uiScale != NULL) {
+        locale_t c_locale = newlocale(LC_NUMERIC_MASK, "C", NULL);
+        double scale = strtod_l(uiScale, NULL, c_locale);
+        freelocale(c_locale);
+        if (scale > 0) {
+            return scale;
+        }
+    }
+    return default_value;
+}
+
+double getNativeScaleFactor(char *output_name, double default_value) {
     static int scale = -2.0;
+    double native_scale = 0;
+    int gdk_scale = 0;
 
     if (scale == -2) {
-        scale = getScale("J2D_UISCALE");
+        scale = (int)getScaleEnvVar("J2D_UISCALE", -1);
     }
 
     if (scale > 0) {
         return scale;
     }
 
-    return getScale("GDK_SCALE");
+    native_scale = getDesktopScale(output_name);
+
+    if (native_scale <= 0) {
+        native_scale = default_value;
+    }
+
+    return native_scale;
 }

src/java.desktop/unix/native/common/awt/systemscale/systemScale.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 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
@@ -28,7 +28,8 @@
 #include <signal.h>
 #include <stdlib.h>
 
-double getNativeScaleFactor();
+double getNativeScaleFactor(char *output_name, double default_value);
+double getScaleEnvVar(const char* var_name, double default_value);
 
 #endif
 

src/java.desktop/unix/native/libawt_xawt/awt/awt_GraphicsEnv.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2020, 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
@@ -37,6 +37,8 @@
 #include <sun_awt_X11GraphicsConfig.h>
 #include <X11/extensions/Xdbe.h>
 #include <X11/XKBlib.h>
+#include <X11/Xlib.h>
+#include <X11/Xresource.h>
 #ifndef NO_XRANDR
 #include <X11/extensions/Xrandr.h>
 #endif
@@ -1728,7 +1730,49 @@ Java_sun_awt_X11GraphicsDevice_getCurrentDisplayMode
 
     AWT_LOCK();
 
-    if (screen < ScreenCount(awt_display)) {
+    if (usingXinerama && XScreenCount(awt_display) > 0) {
+        XRRScreenResources *res = awt_XRRGetScreenResources(awt_display,
+                                                    RootWindow(awt_display, 0));
+        if (res) {
+            if (res->noutput > screen) {
+                XRROutputInfo *output_info = awt_XRRGetOutputInfo(awt_display,
+                                                     res, res->outputs[screen]);
+                if (output_info) {
+                    if (output_info->crtc) {
+                        XRRCrtcInfo *crtc_info =
+                                    awt_XRRGetCrtcInfo (awt_display, res,
+                                                        output_info->crtc);
+                        if (crtc_info) {
+                            if (crtc_info->mode) {
+                                int i;
+                                for (i = 0; i < res->nmode; i++) {
+                                    XRRModeInfo *mode = &res->modes[i];
+                                    if (mode->id == crtc_info->mode) {
+                                        float rate = 0;
+                                        if (mode->hTotal && mode->vTotal) {
+                                             rate = ((float)mode->dotClock /
+                                                    ((float)mode->hTotal *
+                                                    (float)mode->vTotal));
+                                        }
+                                        displayMode = X11GD_CreateDisplayMode(
+                                                           env,
+                                                           mode->width,
+                                                           mode->height,
+                                                           BIT_DEPTH_MULTI,
+                                                           (int)(rate +.2));
+                                        break;
+                                    }
+                                }
+                            }
+                            awt_XRRFreeCrtcInfo(crtc_info);
+                        }
+                    }
+                    awt_XRRFreeOutputInfo(output_info);
+                }
+            }
+            awt_XRRFreeScreenResources(res);
+        }
+    } else {
 
         config = awt_XRRGetScreenInfo(awt_display,
                                       RootWindow(awt_display, screen));
@@ -1778,8 +1822,45 @@ Java_sun_awt_X11GraphicsDevice_enumDisplayModes
 
     AWT_LOCK();
 
-    if (XScreenCount(awt_display) > 0) {
-
+    if (usingXinerama && XScreenCount(awt_display) > 0) {
+        XRRScreenResources *res = awt_XRRGetScreenResources(awt_display,
+                                                    RootWindow(awt_display, 0));
+        if (res) {
+           if (res->noutput > screen) {
+                XRROutputInfo *output_info = awt_XRRGetOutputInfo(awt_display,
+                                                     res, res->outputs[screen]);
+                if (output_info) {
+                    int i;
+                    for (i = 0; i < output_info->nmode; i++) {
+                        RRMode m = output_info->modes[i];
+                        int j;
+                        XRRModeInfo *mode;
+                        for (j = 0; j < res->nmode; j++) {
+                            mode = &res->modes[j];
+                            if (mode->id == m) {
+                                 float rate = 0;
+                                 if (mode->hTotal && mode->vTotal) {
+                                     rate = ((float)mode->dotClock /
+                                                   ((float)mode->hTotal *
+                                                          (float)mode->vTotal));
+                                 }
+                                 X11GD_AddDisplayMode(env, arrayList,
+                                        mode->width, mode->height,
+                                              BIT_DEPTH_MULTI, (int)(rate +.2));
+                                 if ((*env)->ExceptionCheck(env)) {
+                                     goto ret0;
+                                 }
+                                 break;
+                            }
+                        }
+                    }
+ret0:
+                    awt_XRRFreeOutputInfo(output_info);
+                }
+            }
+            awt_XRRFreeScreenResources(res);
+        }
+    } else {
         XRRScreenConfiguration *config;
 
         config = awt_XRRGetScreenInfo(awt_display,
@@ -1937,14 +2018,103 @@ Java_sun_awt_X11GraphicsDevice_exitFullScreenExclusive
  * End DisplayMode/FullScreen support
  */
 
+static char *get_output_screen_name(JNIEnv *env, int screen) {
+#ifdef NO_XRANDR
+    return NULL;
+#else
+    if (!awt_XRRGetScreenResources || !awt_XRRGetOutputInfo) {
+        return NULL;
+    }
+    char *name = NULL;
+    AWT_LOCK();
+    int scr = 0, out = 0;
+    if (usingXinerama && XScreenCount(awt_display) > 0) {
+        out = screen;
+    } else {
+        scr = screen;
+    }
+
+    XRRScreenResources *res = awt_XRRGetScreenResources(awt_display,
+                                                  RootWindow(awt_display, scr));
+    if (res) {
+       if (res->noutput > out) {
+            XRROutputInfo *output_info = awt_XRRGetOutputInfo(awt_display,
+                                                        res, res->outputs[out]);
+            if (output_info) {
+                if (output_info->name) {
+                    name = strdup(output_info->name);
+                }
+                awt_XRRFreeOutputInfo(output_info);
+            }
+        }
+        awt_XRRFreeScreenResources(res);
+    }
+    AWT_UNLOCK();
+    return name;
+#endif /* NO_XRANDR */
+}
+
 /*
  * Class:     sun_awt_X11GraphicsDevice
  * Method:    getNativeScaleFactor
- * Signature: (I)D
+ * Signature: (ID)D
  */
 JNIEXPORT jdouble JNICALL
 Java_sun_awt_X11GraphicsDevice_getNativeScaleFactor
-    (JNIEnv *env, jobject this, jint screen) {
-
-    return getNativeScaleFactor();
+    (JNIEnv *env, jobject this, jint screen, jdouble defValue) {
+    // in case of Xinerama individual screen scales are not supported
+    char *name = get_output_screen_name(env, usingXinerama ? 0 : screen);
+    double scale = getNativeScaleFactor(name, defValue);
+    if (name) {
+        free(name);
+    }
+    return scale;
 }
+
+/*
+ * Class:     sun_awt_X11GraphicsDevice
+ * Method:    getGdkScale
+ * Signature: (Ljava/lang/String;D)D
+ */
+JNIEXPORT jdouble JNICALL
+Java_sun_awt_X11GraphicsDevice_getGdkScale
+    (JNIEnv *env, jobject this, jstring envVarName, jdouble defValue)
+{
+    const char* name = (*env)->GetStringUTFChars(env, envVarName, 0);
+    double value = getScaleEnvVar(name, defValue);
+    (*env)->ReleaseStringUTFChars(env, envVarName, name);
+    return value;
+}
+
+/*
+ * Class:     sun_awt_X11GraphicsDevice
+ * Method:    getXrmXftDpi
+ * Signature: (I)I
+ */
+JNIEXPORT jint JNICALL
+Java_sun_awt_X11GraphicsDevice_getXrmXftDpi
+    (JNIEnv *env, jobject this, jint defValue)
+{
+    int dpi = defValue;
+#ifndef HEADLESS
+    // Ubuntu 18.04 introduced a new settings for a scale factor: Settings > Devices > Displays > Scale.
+    // It is propagated to Xresource (and is read fine with 'xrdb' util) but is not propagated to GSettings
+    // (gtk3 doesn't see it in 'gtk-xft-dpi'). So, retrieve "Xft.dpi" from Xresource via X11 API call.
+    Display *display = XOpenDisplay(NULL); // need to open new display to get up-to-date XResource value
+    if (display) {
+        char *resource_manager = XResourceManagerString(display);
+        if (resource_manager) {
+            XrmDatabase db = XrmGetStringDatabase(resource_manager);
+            if (db) {
+                XrmValue value;
+                char *type;
+                if (XrmGetResource(db, "Xft.dpi", "Xft.dpi", &type, &value)) {
+                    dpi = atoi(value.addr);
+                }
+            }
+        }
+        XCloseDisplay(display);
+    }
+#endif
+    return dpi;
+}

src/java.desktop/unix/native/libawt_xawt/awt/gtk2_interface.c

@@ -2479,6 +2479,8 @@ static jobject gtk2_get_setting(JNIEnv *env, Setting property)
             return get_string_property(env, settings, "gtk-font-name");
         case GTK_ICON_SIZES:
             return get_string_property(env, settings, "gtk-icon-sizes");
+        case GTK_XFT_DPI:
+            return get_integer_property(env, settings, "gtk-xft-dpi");
         case GTK_CURSOR_BLINK:
             return get_boolean_property(env, settings, "gtk-cursor-blink");
         case GTK_CURSOR_BLINK_TIME:

src/java.desktop/unix/native/libawt_xawt/awt/gtk3_interface.c

@@ -2739,6 +2739,8 @@ static jobject gtk3_get_setting(JNIEnv *env, Setting property)
             return get_string_property(env, settings, "gtk-font-name");
         case GTK_ICON_SIZES:
             return get_string_property(env, settings, "gtk-icon-sizes");
+        case GTK_XFT_DPI:
+            return get_integer_property(env, settings, "gtk-xft-dpi");
         case GTK_CURSOR_BLINK:
             return get_boolean_property(env, settings, "gtk-cursor-blink");
         case GTK_CURSOR_BLINK_TIME:

src/java.desktop/unix/native/libawt_xawt/awt/gtk_interface.h

@@ -316,6 +316,7 @@ typedef enum
 {
     GTK_FONT_NAME,
     GTK_ICON_SIZES,
+    GTK_XFT_DPI,
     GTK_CURSOR_BLINK,
     GTK_CURSOR_BLINK_TIME
 } Setting;

src/java.desktop/unix/native/libsplashscreen/splashscreen_sys.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 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
@@ -811,7 +811,7 @@ SplashGetScaledImageName(const char* jarName, const char* fileName,
 #ifndef __linux__
     return JNI_FALSE;
 #endif
-    *scaleFactor = (float)getNativeScaleFactor();
+    *scaleFactor = (float)getNativeScaleFactor(NULL, 1);
     return GetScaledImageName(fileName, scaledImgName, scaleFactor, scaledImageNameLength);
 }
 

src/java.desktop/windows/classes/sun/awt/Win32GraphicsEnvironment.java

@@ -51,6 +51,11 @@ import sun.java2d.windows.WindowsFlags;
 
 public final class Win32GraphicsEnvironment extends SunGraphicsEnvironment {
 
+    // [tav] the values match the native ones
+    private final static int PROCESS_DPI_UNAWARE            = 0;
+    private final static int PROCESS_SYSTEM_DPI_AWARE       = 1;
+    private final static int PROCESS_PER_MONITOR_DPI_AWARE  = 2;
+
     static final float debugScaleX;
     static final float debugScaleY;
 
@@ -92,6 +97,7 @@ public final class Win32GraphicsEnvironment extends SunGraphicsEnvironment {
     public static void initDisplayWrapper() {
         if (!displayInitialized) {
             displayInitialized = true;
+            if (!isUIScaleEnabled()) setProcessDPIAwareness(PROCESS_SYSTEM_DPI_AWARE);
             initDisplay();
         }
     }
@@ -99,6 +105,7 @@ public final class Win32GraphicsEnvironment extends SunGraphicsEnvironment {
     public Win32GraphicsEnvironment() {
     }
 
+    private native static void setProcessDPIAwareness(int level);
     protected native int getNumScreens();
     private native int getDefaultScreen();
 

src/java.desktop/windows/classes/sun/awt/windows/WFileDialogPeer.java

@@ -70,6 +70,11 @@ final class WFileDialogPeer extends WWindowPeer implements FileDialogPeer {
         super(target);
     }
 
+    @Override
+    public void updateGC() {
+        // nop
+    }
+
     @Override
     void create(WComponentPeer parent) {
         this.parent = parent;