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8234562: Move OrderAccess::release_store*/load_acquire to Atomic

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Reviewed-by: rehn, dholmes
This commit is contained in:
Stefan Karlsson 2019-11-25 12:22:13 +01:00
parent e06c17ce33
commit e527ce4b57
97 changed files with 554 additions and 570 deletions
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6
src/hotspot/share/runtime/objectMonitor.cpp
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@ -916,8 +916,8 @@ void ObjectMonitor::exit(bool not_suspended, TRAPS) {
// release semantics: prior loads and stores from within the critical section
// must not float (reorder) past the following store that drops the lock.
OrderAccess::release_store(&_owner, (void*)NULL); // drop the lock
OrderAccess::storeload(); // See if we need to wake a successor
Atomic::release_store(&_owner, (void*)NULL); // drop the lock
OrderAccess::storeload(); // See if we need to wake a successor
if ((intptr_t(_EntryList)|intptr_t(_cxq)) == 0 || _succ != NULL) {
return;
}
@ -1092,7 +1092,7 @@ void ObjectMonitor::ExitEpilog(Thread * Self, ObjectWaiter * Wakee) {
Wakee = NULL;
// Drop the lock
OrderAccess::release_store(&_owner, (void*)NULL);
Atomic::release_store(&_owner, (void*)NULL);
OrderAccess::fence(); // ST _owner vs LD in unpark()
DTRACE_MONITOR_PROBE(contended__exit, this, object(), Self);