src/hotspot/share/prims/jvmtiRawMonitor.cpp

rev 48406 : 8194406: Use Atomic::replace_if_null
Reviewed-by: coleenp, dholmes

@@ -125,11 +125,11 @@
 //
 // -------------------------------------------------------------------------
 
 int JvmtiRawMonitor::SimpleEnter (Thread * Self) {
   for (;;) {
-    if (Atomic::cmpxchg(Self, &_owner, (void*)NULL) == NULL) {
+    if (Atomic::replace_if_null(Self, &_owner)) {
        return OS_OK ;
     }
 
     ObjectWaiter Node (Self) ;
     Self->_ParkEvent->reset() ;     // strictly optional

@@ -137,11 +137,11 @@
 
     RawMonitor_lock->lock_without_safepoint_check() ;
     Node._next  = _EntryList ;
     _EntryList  = &Node ;
     OrderAccess::fence() ;
-    if (_owner == NULL && Atomic::cmpxchg(Self, &_owner, (void*)NULL) == NULL) {
+    if (_owner == NULL && Atomic::replace_if_null(Self, &_owner)) {
         _EntryList = Node._next ;
         RawMonitor_lock->unlock() ;
         return OS_OK ;
     }
     RawMonitor_lock->unlock() ;