HubSpot/J2V8

Name: J2V8

Owner: HubSpot

Description: Java Bindings for V8

Forked from: eclipsesource/J2V8

Created: 2016-11-21 19:33:28.0

Updated: 2016-11-21 19:33:30.0

Pushed: 2016-09-30 15:22:11.0

Homepage:

Size: 11839

Language: Java

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README

J2V8

J2V8 is a set of Java bindings for V8. J2V8 focuses on performance and tight integration with V8. It also takes a 'primitive first' approach, meaning that if a value can be accessed as a primitive, then it should be. This forces a more static type system between the JS and Java code, but it also improves the performance since intermediate Objects are not created.

We developed J2V8 as a high performance engine for our multi-platform mobile toolkit tabris.js and it is a great choice for executing JavaScript on Android devices.

Building J2V8

Building J2V8 requires building both the native parts and the Java library (.jar file). To build the native parts we first build node.js as a library and then statically link J2V8 to that. The Java parts are built with maven.

Building on MacOS

./build-node.sh
./buildJ2V8_macos.sh
 clean verify

Building on Linux

rt CCFLAGS="${CCFLAGS} -fPIC" 
rt CXXFLAGS="${CXXFLAGS} -fPIC" 
rt CPPFLAGS="${CPPFLAGS} -fPIC" 
./build-node.sh
r /data/jenkins/node .
ni
-I../node -I../node/deps/v8 -I../node/deps/v8/include \
-I../node/src -I /data/jenkins/tools/hudson.model.JDK/jdk-7/include/ \
-I /data/jenkins/tools/hudson.model.JDK/jdk-7/include/linux  \
com_eclipsesource_v8_V8Impl.cpp -std=c++11 -fPIC -shared -o libj2v8_linux_x86_64.so \
-Wl,--whole-archive ../node/out/Release/libnode.a  -Wl,--no-whole-archive \
-Wl,--start-group \
                  ../node/out/Release/libv8_libbase.a \
                  ../node/out/Release/libv8_libplatform.a \
                  ../node/out/Release/libv8_base.a \
                  ../node/out/Release/libv8_nosnapshot.a \
                  ../node/out/Release/libuv.a \
                  ../node/out/Release/libopenssl.a \
                  ../node/out/Release/libhttp_parser.a \
                  ../node/out/Release/libgtest.a \
                  ../node/out/Release/libzlib.a \
                  ../node/out/Release/libcares.a \
-Wl,--end-group \
-lrt -D NODE_COMPATIBLE=1
clean verify

This will build J2V8 with node.js support. To disable this support, remove the -D NODE_COMPATIBLE=1 option.

Tutorials

• Getting Started With J2V8
• Registering Java Callbacks with J2V8
• Implementing WebWorkers with J2V8
• Multithreaded JavaScript with J2V8
• Using J2V8 with Heroku

Articles

• Announcing J2V8 4
• Running Node.js on the JVM
• Shipping J2V8 as an AAR
• Announcing J2V8 3.0
• J2V8 2.2 New and Noteworthy
• Announcing J2V8 2.0
• Highly Efficient Java & JavaScript Integration

Presentations

• J2V8 A Highly Efficient JS Runtime For Java
• Running JavaScript Efficiently in a Java World

Other Resources

Here is a list of articles I've written on J2V8 http://eclipsesource.com/blogs/tag/j2v8/.

Who is using J2V8?

Here are some projects that use J2V8:

• tabris.js
• tern.java
• PlantUML
• jooby

License

The code is published under the terms of the Eclipse Public License, version 1.0.