How does JIT replace optimized machine code during runtime?

Posted by stacker on Stack Overflow See other posts from Stack Overflow or by stacker
Published on 2010-05-14T21:06:28Z Indexed on 2010/05/14 22:04 UTC
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Filed under:

java

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jit

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assembly

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optimization

I'm browsing through OpenJDK sources and cannot find the place where optimized code is replaced.

I wonder how this can be done in protected mode, isn't it some kind of selfmodifing code which should be prevented by the OS?

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