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From "Eugene S. Ostrovsky (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-2145) [drlvm][jvmti] Compiled Method Load event - inlined method support
Date Fri, 12 Jan 2007 12:51:27 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-2145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12464193
] 

Eugene S. Ostrovsky commented on HARMONY-2145:
----------------------------------------------

It seems that Jit still reports overlapping regions.

To reproduce unpack H-2145_CML.zip and run the following command (this example is for cygwin
bash shell):
$ VM_OPTS=-Xem:opt ./run_win.bat <path to jre>

the end of output usually contains something like this:
......
overlapping regions:
        038C8988        7       length  Ljava/lang/String;
        038C895E        46      toString        Ljava/lang/StringBuffer;

overlapping regions:
        038C91D3        5       toByteArray     Ljava/io/ByteArrayOutputStream;
        038C9158        124     toByteArray     Ljava/io/ByteArrayOutputStream;

overlapping regions:
        038CD85C        43      elements        Ljava/util/Hashtable;
        038CD83D        43      elements        Ljava/util/Hashtable;

VMDeath: finished


Note: columns describe 1 - codeAddr, 2 - codeSize, 3 - method's name, 4 - method's declaring
class.

> [drlvm][jvmti] Compiled Method Load event - inlined method support
> ------------------------------------------------------------------
>
>                 Key: HARMONY-2145
>                 URL: https://issues.apache.org/jira/browse/HARMONY-2145
>             Project: Harmony
>          Issue Type: New Feature
>          Components: DRLVM
>            Reporter: Eugene S. Ostrovsky
>         Assigned To: Gregory Shimansky
>         Attachments: CompiledMethodLoadEvent_size_fixed.diff, exe_notify_compile_method_load_added.diff,
H-2145-Check-inline-regions-consistency.patch, H-2145-JIT-side-version-2.patch, H-2145-JIT-side.patch,
H-2145-sendCompiledMethodLoadEvent-tracing.patch, H-2145-VM-Callback-interface.patch, H-2145-VM-side-version-2.patch,
H-2145-VM-support-for-compiled-method-load-events-for-inlined-methods.patch, H-2145_CML.zip,
H-2145_sizes.log, inline_test.zip
>
>
> Current VM doesn't report Compiled Method Load event for methods that are inlined by
JIT. 
> 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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