Ivan Dubrov 3892c7b61a Updating bug tracker URL		il y a 9 ans
agent/src/main/java	Renaming org.dcevm -> com.github.dcevm	il y a 10 ans
dcevm/src	Fixing issue with vmindex not being properly updated.	il y a 9 ans
gradle/wrapper	Extracting DCEVM patch & code into separate project	il y a 10 ans
hotspot/.hg/patches	Updating bug tracker URL	il y a 9 ans
installer	Allow changing installer JAR name	il y a 9 ans
native	Fixing native code compilation	il y a 10 ans
.gitignore	Adding hotspot.log to ignores	il y a 10 ans
README.md	Update README.md	il y a 9 ans
build.cmd	Fixing build.cmd	il y a 10 ans
build.gradle	Avoiding Turkish i/I issue with toLowerCase(), using ENGLISH locale	il y a 9 ans
gradle.properties	full/light jdk7u79-b02 support	il y a 9 ans
gradlew	Extracting DCEVM patch & code into separate project	il y a 10 ans
gradlew.bat	Extracting DCEVM patch & code into separate project	il y a 10 ans
settings.gradle	Set root project name explicitly	il y a 9 ans

DCEVM

This project is a fork of original DCEVM project.

The purpose of the project is to maintain enhanced class redefinition functionality for OpenJDK HotSpot 7/8.

Binaries

You can download binaries here.

Supported versions

pathes/ contains patches for all supported versions. Each patch is named by concatenating prefix full or light with the OpenJDK HotSpot tag. full patches support full redefenition capabilities (including removal of superclasses, for example). light patches are easier to maintain, but they only support limited functionality (generally, additions to class hierarchies are fine, removals are not).

HotSpot tag is the name of the tag in the corresponding HotSpot Mercurial repository (Java 8/Java 7).

Building

General Requirements

You need the following software to build DCEVM:

Java 7 or later. If you intend to run tests, it should be one of the supported versions (see list of patches/)
C++ compiler toolchain (gcc). There is no strict version requirement except that it should be supported by HotSpot build scripts.
Mercurial with Mercurial Queues Extension enabled.

Mac OS X specific requirements

Currently the build is not compatible with Clang on Mac OS X, you need to install gcc 4.8 using the Homebrew:

brew tap homebrew/versions
brew install gcc48

Then set the following environmental properties:

export CC=/usr/local/bin/gcc-4.8
export CFLAGS=-fobjc-exceptions
export CXX=/usr/local/bin/g++-4.8
export SA_LDFLAGS=-fobjc-exceptions

Compiling DCEVM

Configure version you want in gradle.properties.
Run ./gradlew patch to retrieve HotSpot sources and patch them.
Run ./gradlew compileFastdebug to build fastdebug version or ./gradlew compileProduct to build product version.
Compiled libraries are placed in hotspot/build/fastdebug or hotspot/build/product.

Installing DCEVM

Replace libjvm.so/jvm.dll/libjvm.dylib in the target JRE.
Run java -version, it should include Dynamic Code Evolution string.

Or you can install DCEVM using the gradle script:

Run ./gradlew installFastdebug -PtargetJre=$JAVA_HOME/jre or ./gradlew installProduct -PtargetJre=$JAVA_HOME/jre
DCEVM will be installed as “alternative” JVM. To use it, add -XXaltjvm=dcevm

Testing DCEVM

Configure version you want in gradle.properties.
Set JAVA_HOME to point to JDK you want to test against (should be compatible with the version you set in gradle.properties).
Run ./gradlew patch to retrieve HotSpot sources and patch them.
Run ./gradlew test to run tests.
Tests reports will be in dcevm/build/reports/tests/index.html

To run tests from IDE, you need:

Run ./gradlew agent:build to build redefinition agent code.
Add JVM argument to use redefinition agent (-javaagent:agent/build/libs/agent.jar).
Add JVM argument to DCEVM VM if installed side-by-side (-XXaltjvm=dcevm).

README.md