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comparison src/share/vm/prims/forte.cpp @ 3899:c124e2e7463e

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7083786: dead various dead chunks of code Reviewed-by: iveresov, kvn
author never
date Wed, 31 Aug 2011 16:46:11 -0700
parents 1d1603768966
children f08d439fab8c
comparison
equal deleted inserted replaced
3898:a64d352d1118 3899:c124e2e7463e
520 // method_id - jmethodID of the method being executed 520 // method_id - jmethodID of the method being executed
521 521
522 extern "C" { 522 extern "C" {
523 JNIEXPORT 523 JNIEXPORT
524 void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext) { 524 void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext) {
525
526 // This is if'd out because we no longer use thread suspension.
527 // However if someone wanted to backport this to a 5.0 jvm then this
528 // code would be important.
529 #if 0
530 if (SafepointSynchronize::is_synchronizing()) {
531 // The safepoint mechanism is trying to synchronize all the threads.
532 // Since this can involve thread suspension, it is not safe for us
533 // to be here. We can reduce the deadlock risk window by quickly
534 // returning to the SIGPROF handler. However, it is still possible
535 // for VMThread to catch us here or in the SIGPROF handler. If we
536 // are suspended while holding a resource and another thread blocks
537 // on that resource in the SIGPROF handler, then we will have a
538 // three-thread deadlock (VMThread, this thread, the other thread).
539 trace->num_frames = ticks_safepoint; // -10
540 return;
541 }
542 #endif
543
544 JavaThread* thread; 525 JavaThread* thread;
545 526
546 if (trace->env_id == NULL || 527 if (trace->env_id == NULL ||
547 (thread = JavaThread::thread_from_jni_environment(trace->env_id)) == NULL || 528 (thread = JavaThread::thread_from_jni_environment(trace->env_id)) == NULL ||
548 thread->is_exiting()) { 529 thread->is_exiting()) {