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HotSpot Internals

This wiki is the home page for the HotSpot Internals for OpenJDK spacewritten by and for programmers working on the HotSpot JVM system.

Intentions and non-intentions

This wiki contains:

• An architectural guide to the Runtime, Compiler, GC, etc.
• Details on performance techniques.
• A place to document likely future work (major refactorings or cleanups, new optimizations, etc.).
• Quick links to similar information in other places on the web.
• Information which, once written, is expected to remain accurate and relevant, as long as the related code remains stable.

Please look for the following types of information elsewhere:

• Not non-architectural or non-technical developer notes.
• Not an introduction or quick-start for working on the JVM. (TO DO: Put links here.)
• Not build instructions.
• Not a substitute for comments in the source code.
• Not a list of bugs or tasks.
• Not a blog, forum, or the comments section thereof.