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From: Gregory Shimansky <gshimansky@gmail.com>
To: dev@harmony.apache.org
Subject: Re: [DRLVM][JVMTI]a bug when running SpecJVM98 _201_compress
Date: Wed, 25 Nov 2009 21:45:24 +0300
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IIRC VMDeath is not sent if System.exit is used by application. This is a 
limitation of JMVTI implementation in DRLVM. Most likely Spec uses exit to 
finish.

> Hi all,
> I'm doing some tuning work for Harmony running SpecJVM98.
> I write a JVMTI agent to catch VMDeath event and do something at the end of
>  JVM's life, but that doesn't work(the same agent work well for hotspot).
> 
> my agent likes bellow:
> ...
> static void JNICALL
> callbackVMDeath(jvmtiEnv *jvmti, JNIEnv *jni)
> {
>       assert(false);
> printf("vm death\n");
> }
> JNIEXPORT void JNICALL Agent_OnUnload(JavaVM *jvm)
> {
> assert(false);
> printf("unload!");
> }
> JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void
>  *reserved) {
> ...
> error = jvmti->SetEventNotificationMode(JVMTI_ENABLE,JVMTI_EVENT_VM_DEATH,
>  (jthread)NULL); callbacks.VMDeath = &callbackVMDeath;
> error = jvmti->SetEventCallbacks(&callbacks,(jint)sizeof(callbacks));
> ...
> }
> ...
> The program ends correctly. This is really strange. Can anyone try this
>  case and explain for me?
> 
> Thanks a lot.
> 
> 2009-11-26
> 
> 
> 
> johnnylj98
>