X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=action.cc;h=9f95727c8dcb63b27dfffc9782ab376a644d852b;hb=cb9b254332794ea63d0089b21b498f4a5301f08b;hp=34650c63927e03e471f9f17354fe39e786e46c77;hpb=e8bc4a0715ce1c86f3ff7d24179e1164bf3ee61b;p=model-checker.git

diff --git a/action.cc b/action.cc
index 34650c6..9f95727 100644
--- a/action.cc
+++ b/action.cc
@@ -133,6 +133,17 @@ void ModelAction::read_from(ModelAction *act)
 	value = act->value;
 }
 
+/**
+ * Check whether 'this' happens before act, according to the memory-model's
+ * happens before relation. This is checked via the ClockVector constructs.
+ * @return true if this action's thread has synchronized with act's thread
+ * since the execution of act, false otherwise.
+ */
+bool ModelAction::happens_before(ModelAction *act)
+{
+	return act->cv->synchronized_since(this);
+}
+
 void ModelAction::print(void)
 {
 	const char *type_str;