X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=mcs-lock%2Fmcs-lock.h;h=70e4019f9c9046a8242341689d51b4fd0d51a85a;hb=b684f62b7411fea476b2e1f6a8bbf920ac4c7216;hp=47c2f8f00536e06ace6da9cc668898d836fea29b;hpb=18869c55f75a2801099ef5db7b8e2b95dd2e3e7f;p=model-checker-benchmarks.git

diff --git a/mcs-lock/mcs-lock.h b/mcs-lock/mcs-lock.h
index 47c2f8f..70e4019 100644
--- a/mcs-lock/mcs-lock.h
+++ b/mcs-lock/mcs-lock.h
@@ -57,7 +57,7 @@ public:
 			// wait on predecessor setting my flag -
 			rl::linear_backoff bo;
 			while ( me->gate.load(std::mo_acquire) ) {
-				bo.yield();
+				thrd_yield();
 			}
 		}
 	}
@@ -69,7 +69,8 @@ public:
 		if ( next == NULL )
 		{
 			mcs_node * tail_was_me = me;
-			if ( m_tail.compare_exchange( tail_was_me,NULL,std::mo_acq_rel) ) {
+			if ( m_tail.compare_exchange_strong(
+				tail_was_me,NULL,std::mo_release) ) {
 				// got null in tail, mutex is unlocked
 				return;
 			}
@@ -80,7 +81,7 @@ public:
 				next = me->next.load(std::mo_acquire);
 				if ( next != NULL )
 					break;
-				bo.yield();
+				thrd_yield();
 			}
 		}