ExitEpilog用来唤醒线程，代码如下：
void ObjectMonitor::ExitEpilog (Thread * Self, ObjectWaiter * Wakee) { assert (_owner == Self, "invariant") ; _succ = Knob_SuccEnabled ? Wakee->_thread : NULL ; ParkEvent * Trigger = Wakee->_event ; Wakee = NULL ; OrderAccess::release_store_ptr (&_owner, NULL) ; OrderAccess::fence() ; if (SafepointSynchronize::do_call_back()) { TEVENT (unpark before SAFEPOINT) ; } DTRACE_MONITOR_PROBE(contended__exit, this, object(), Self); Trigger->unpark() ; //唤醒线程 // Maintain stats and report events to JVMTI if (ObjectMonitor::_sync_Parks != NULL) { ObjectMonitor::_sync_Parks->inc() ; } }重量级锁出口流程图：
