How to recompile native JDK code (C/C++) and deploy on my JVM? (SocketDispatcher.java)

[J Crawford]

Hello,

I'm trying to understand what happens inside the SocketDispatcher native method "write0". I want to make some experiments with it therefore I would like to learn how to recompile and debug native methods from the JDK on Linux. That's a knowledge I find important to have (i.e. change JDK native code).

Here is the SO post: http://stackoverflow.com/questions/43360875/how-to-change-java-native-code-c-implementation-from-the-jdk-socketchannelimp

Any genius would know how to do that?

Basically I would like to know:

1. Where is the C/C++ code for write0 for Linux?

2. How do I recompile (gcc command-line?) the C/C++ code for write0 on Linux?

3. How do I start my JVM and make it use my new compiled native code for write0 on Linux?

Thanks!

-JC

[Avi Kivity]

It is probably better to ask this on a jdk oriented mailing list, and not on a list which at list nominally is devoted to mechanical sympathy.

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[Martijn Verburg]

Hi JC,

Go to openjdk.java.net and join the adoption-discuss mailing list - it's pretty much the place for folks new to OpenJDK tinkering :-).   I help run that group, so look forward to your mail there :-).

Cheers,
Martijn

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