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GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀
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oracle/graal
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GraalVM is a high-performance JDK distribution that compiles your Java applications ahead of time into standalone binaries. These binaries start instantly, provide peak performance with no warmup, and use fewer resources.You can use GraalVM just like any other Java Development Kit in your IDE.
The project website athttps://www.graalvm.org/ describes how toget started, how tostay connected, and how tocontribute.
Please refer to theGraalVM website for documentation. You can find most of the documentation sources in thedocs/ directory in the same hierarchy as displayed on the website. Additional documentation including developer instructions for individual components can be found in correspondingdocs/ sub-directories. The documentation for the Truffle framework, for example, is intruffle/docs/. This also applies to languages, tools, and other components maintained inrelated repositories.
- Open aGitHub issue for bug reports, questions, or requests for enhancements.
- Join theGraalVM Slack to connect with the community and the GraalVM team.
- Report a security vulnerability according to theReporting Vulnerabilities guide.
This source repository is the main repository for GraalVM and includes the following components:
| Directory | Description |
|---|---|
.devcontainer/ | Configuration files for GitHub dev containers. |
.github/ | Configuration files for GitHub issues, workflows, …. |
compiler/ | Graal compiler, a modern, versatile compiler written in Java. |
espresso/ | Espresso, a meta-circular Java bytecode interpreter for the GraalVM. |
regex/ | TRegex, a regular expression engine for other GraalVM languages. |
sdk/ | GraalVM SDK, long-term supported APIs of GraalVM. |
substratevm/ | Framework for ahead-of-time (AOT) compilation withNative Image. |
sulong/ | Sulong, an engine for running LLVM bitcode on GraalVM. |
tools/ | Tools for GraalVM languages implemented with the instrumentation framework. |
truffle/ | GraalVM'slanguage implementation framework for creating languages and tools. |
visualizer/ | Ideal Graph Visualizer (IGV), a tool for analyzing Graal compiler graphs. |
vm/ | Components for building GraalVM distributions. |
wasm/ | GraalWasm, an engine for running WebAssembly programs on GraalVM. |
GraalVM provides additional languages, tools, and other components developed in related repositories. These are:
| Name | Description |
|---|---|
| FastR | Implementation of the R language. |
| GraalJS | Implementation of JavaScript and Node.js. |
| GraalPy | Implementation of the Python language. |
| GraalVM Demos | Several example applications illustrating GraalVM capabilities. |
| Native Build Tools | Build tool plugins for GraalVM Native Image. |
| SimpleLanguage | A simple example language built with the Truffle framework. |
| SimpleTool | A simple example tool built with the Truffle framework. |
| TruffleRuby | Implementation of the Ruby language. |
GraalVM Community Edition is open source and distributed underversion 2 of the GNU General Public License with the “Classpath” Exception, which are the same terms as for Java. The licenses of the individual GraalVM components are generally derivative of the license of a particular language (see the table below).
| Component(s) | License |
|---|---|
| Espresso,Ideal Graph Visualizer | GPL 2 |
| GraalVM Compiler,SubstrateVM,Tools,VM | GPL 2 with Classpath Exception |
| GraalVM SDK,GraalWasm,Truffle Framework,TRegex | Universal Permissive License |
| Sulong | 3-clause BSD |
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GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀