X-Git-Url: http://plrg.eecs.uci.edu/git/?p=c11tester.git;a=blobdiff_plain;f=action.cc;h=1655d9428eb57041287c7b2bef12e3742b7058f1;hp=1e28264fbcedf171c673bace33be6f41c3aa3f35;hb=bad8cc4598438f8b8d9e8fa210e2790f92c9ec44;hpb=5485feb8f53f4fe816b08d854fc3e82b00c33b0b

diff --git a/action.cc b/action.cc
index 1e28264f..1655d942 100644
--- a/action.cc
+++ b/action.cc
@@ -27,6 +27,41 @@ ModelAction::~ModelAction()
 		delete cv;
 }
 
+void ModelAction::copy_from_new(ModelAction *newaction)
+{
+	seq_number = newaction->seq_number;
+}
+
+bool ModelAction::is_mutex_op() const
+{
+	return type == ATOMIC_LOCK || type == ATOMIC_TRYLOCK || type == ATOMIC_UNLOCK;
+}
+
+bool ModelAction::is_lock() const
+{
+	return type == ATOMIC_LOCK;
+}
+
+bool ModelAction::is_unlock() const
+{
+	return type == ATOMIC_UNLOCK;
+}
+
+bool ModelAction::is_trylock() const
+{
+	return type == ATOMIC_TRYLOCK;
+}
+
+bool ModelAction::is_success_lock() const
+{
+	return type == ATOMIC_LOCK || (type == ATOMIC_TRYLOCK && value == VALUE_TRYSUCCESS);
+}
+
+bool ModelAction::is_failed_trylock() const
+{
+	return (type == ATOMIC_TRYLOCK && value == VALUE_TRYFAILED);
+}
+
 bool ModelAction::is_read() const
 {
 	return type == ATOMIC_READ || type == ATOMIC_RMWR || type == ATOMIC_RMW;
@@ -102,8 +137,8 @@ bool ModelAction::same_thread(const ModelAction *act) const
 }
 
 void ModelAction::copy_typeandorder(ModelAction * act) {
-	this->type=act->type;
-	this->order=act->order;
+	this->type = act->type;
+	this->order = act->order;
 }
 
 /** This method changes an existing read part of an RMW action into either:
@@ -156,27 +191,57 @@ bool ModelAction::is_synchronizing(const ModelAction *act) const
 	return false;
 }
 
-void ModelAction::create_cv(const ModelAction *parent)
+bool ModelAction::is_conflicting_lock(const ModelAction *act) const
 {
-	if (cv)
-		delete cv;
+	//Must be different threads to reorder
+	if (same_thread(act))
+		return false;
+	
+	//Try to reorder a lock past a successful lock
+	if (act->is_success_lock())
+		return true;
+	
+	//Try to push a successful trylock past an unlock
+	if (act->is_unlock() && is_trylock() && value == VALUE_TRYSUCCESS)
+		return true;
+
+	return false;
+}
 
+/**
+ * Create a new clock vector for this action. Note that this function allows a
+ * user to clobber (and leak) a ModelAction's existing clock vector. A user
+ * should ensure that the vector has already either been rolled back
+ * (effectively "freed") or freed.
+ *
+ * @param parent A ModelAction from which to inherit a ClockVector
+ */
+void ModelAction::create_cv(const ModelAction *parent)
+{
 	if (parent)
 		cv = new ClockVector(parent->cv, this);
 	else
 		cv = new ClockVector(NULL, this);
 }
 
+void ModelAction::set_try_lock(bool obtainedlock) {
+	if (obtainedlock)
+		value=VALUE_TRYSUCCESS;
+	else
+		value=VALUE_TRYFAILED;
+}
+
 /** Update the model action's read_from action */
 void ModelAction::read_from(const ModelAction *act)
 {
 	ASSERT(cv);
 	reads_from = act;
 	if (act != NULL && this->is_acquire()) {
-		std::vector< const ModelAction *, MyAlloc<const ModelAction *> > release_heads;
+		rel_heads_list_t release_heads;
 		model->get_release_seq_heads(this, &release_heads);
 		for (unsigned int i = 0; i < release_heads.size(); i++)
-			synchronize_with(release_heads[i]);
+			if (!synchronize_with(release_heads[i]))
+				model->set_bad_synchronization();
 	}
 }
 
@@ -184,11 +249,14 @@ void ModelAction::read_from(const ModelAction *act)
  * Synchronize the current thread with the thread corresponding to the
  * ModelAction parameter.
  * @param act The ModelAction to synchronize with
+ * @return True if this is a valid synchronization; false otherwise
  */
-void ModelAction::synchronize_with(const ModelAction *act) {
-	ASSERT(*act < *this);
+bool ModelAction::synchronize_with(const ModelAction *act) {
+	if (*this < *act && type != THREAD_JOIN && type != ATOMIC_LOCK)
+		return false;
 	model->check_promises(cv, act->cv);
 	cv->merge(act->cv);
+	return true;
 }
 
 bool ModelAction::has_synchronized_with(const ModelAction *act) const
@@ -207,7 +275,13 @@ bool ModelAction::happens_before(const ModelAction *act) const
 	return act->cv->synchronized_since(this);
 }
 
-void ModelAction::print(void) const
+/**
+ * Print nicely-formatted info about this ModelAction
+ *
+ * @param print_cv True if we want to print clock vector data. Might be false,
+ * for instance, in situations where the clock vector might be invalid
+ */
+void ModelAction::print(bool print_cv) const
 {
 	const char *type_str, *mo_str;
 	switch (this->type) {
@@ -247,6 +321,15 @@ void ModelAction::print(void) const
 	case ATOMIC_INIT:
 		type_str = "init atomic";
 		break;
+	case ATOMIC_LOCK:
+		type_str = "lock";
+		break;
+	case ATOMIC_UNLOCK:
+		type_str = "unlock";
+		break;
+	case ATOMIC_TRYLOCK:
+		type_str = "trylock";
+		break;
 	default:
 		type_str = "unknown type";
 	}
@@ -282,7 +365,7 @@ void ModelAction::print(void) const
 		else
 			printf(" Rf: ?");
 	}
-	if (cv) {
+	if (cv && print_cv) {
 		printf("\t");
 		cv->print();
 	} else