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From "George Timoshenko (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-2145) [drlvm][jvmti] Compiled Method Load event - inlined method support
Date Mon, 13 Nov 2006 05:50:38 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-2145?page=all ]

George Timoshenko updated HARMONY-2145:

    Attachment: exe_notify_compile_method_load_added.diff

There is already some implementation of required functionality.

The patch appends exe_notify_compile_method_load flag into the OpenMethodExecutionParam struct
(FALSE by default).

When the flag is turned on code emitter (Jitrino OPT) runs sendCompiledMethodLoadEvent for
each method that was compiled during current compilation session.

Here is the current implementation of sendCompiledMethodLoadEvent (in DrlVMInterface.cpp):

void DrlVMCompilationInterface::sendCompiledMethodLoadEvent(MethodDesc * methodDesc, 
        uint32 codeSize, void* codeAddr, uint32 mapLength, 
        AddrLocation* addrLocationMap, void* compileInfo) {

    // VM-JIT interface function should be called here instead of logging
    if (Log::isEnabled()) {
        Log::out() << "   ** Inlined method: " 
                << methodDesc->getName() << std::endl;
        Log::out() << "   ** Number of locations:" << mapLength 
                << std::endl;

sendCompiledMethodLoadEvent 's signature AFAIU is exactly the same as the one from SPEC.
So all we need IMO is to insert into sendCompiledMethodLoadEvent a call to VM that raises
necessary event.

> [drlvm][jvmti] Compiled Method Load event - inlined method support
> ------------------------------------------------------------------
>                 Key: HARMONY-2145
>                 URL: http://issues.apache.org/jira/browse/HARMONY-2145
>             Project: Harmony
>          Issue Type: New Feature
>          Components: DRLVM
>            Reporter: Eugene S. Ostrovsky
>         Attachments: exe_notify_compile_method_load_added.diff
> Current VM doesn't report Compiled Method Load event for methods that are inlined by
> Though spec requires it to be sent for every compiled method:
> http://java.sun.com/j2se/1.5.0/docs/guide/jvmti/jvmti.html#CompiledMethodLoad
> We need to add some function to interface between VM and JIT in order to let VM know
about inlined methods.

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