Da Vinci Machine Project Wiki

The Da Vinci Machine Project is a set of modifications of the JVM to support implementations of non-Java languages at a quality level (performance, compactness) near that of Java. The project is a part of the OpenJDK. Developers can write notes here.

Intentions and non-intentions

This wiki contains:

• Instructions and advice on downloading and building this project's code.
• Notes about the ongoing design and development of the various subprojects.
• A place to document likely future work.
• Quick links to similar information in other places on the web.
  • http://openjdk.java.net/projects/mlvm/ (Da Vinci Machine Project home)
  • http://wikis.sun.com/display/HotSpotInternals/Home (HotSpot internals)

Look for non-technical content on the static project pages: http://openjdk.java.net/projects/mlvm

Relation to JDK 7

As of 10/2010, JDK 7 includes method handles and invokedynamic, but not language support for invokedynamic.

• Released builds of this technology can be found here.
• The source repositories are with the rest of JDK7.
  For example some of the JDK code is here and some of the JVM code is here.
• An advance copy of the javadoc (derived from the mlvm patch queue) is posted here.
• Here's an example of how to run a warm-and-breathing test for method handles in JDK 7.

Contents

Interesting tasks to do

• Document the process of pulling and building on various platforms.
  • Building on Windows
• List relevant RFEs and subprojects. Link or enumerate architectural issues.
• Extract links and info. from messages and blog postings, especially via hotspot-dev@openjdk.
  Hard Drive Parts

  Who writes this wiki?

• We are using the Community Write pattern.
• There is no public write access, except for leaving page comments. You must be registered and logged in to leave comments.
• Please do add page comments when a page should answer your question but doesn't. (That means, potentially on any page.)
• The most effective page comments will include links to relevant email discussion threads, e.g., on the OpenJDK mlvm-dev list.
• Any member of the OpenJDK Hotspot Group or a related group should feel free to contribute.
• Committers, contributors, and users of the Da Vinci Machine Project code base are welcome to contribute.
• Write permissions are not automatic until and unless the DBs (Sun wiki vs. OpenJDK) get on speaking terms. If you think you should have write permission and don't ask jrose