From: Brian Norris <banorris@uci.edu>
Date: Tue, 11 Dec 2012 23:22:56 +0000 (-0800)
Subject: cyclegraph: uniform spacing, style
X-Git-Tag: oopsla2013~440
X-Git-Url: http://demsky.eecs.uci.edu/git/?p=model-checker.git;a=commitdiff_plain;h=fc32611957cecd106751b62bc4de4aeddc9af56c

cyclegraph: uniform spacing, style
---

diff --git a/cyclegraph.cc b/cyclegraph.cc
index 0528029..51066c9 100644
--- a/cyclegraph.cc
+++ b/cyclegraph.cc
@@ -15,7 +15,8 @@ CycleGraph::CycleGraph() :
 }
 
 /** CycleGraph destructor */
-CycleGraph::~CycleGraph() {
+CycleGraph::~CycleGraph()
+{
 }
 
 /**
@@ -23,10 +24,11 @@ CycleGraph::~CycleGraph() {
  * @param action The ModelAction to find a node for
  * @return The CycleNode paired with this action
  */
-CycleNode * CycleGraph::getNode(const ModelAction *action) {
-	CycleNode *node=actionToNode.get(action);
-	if (node==NULL) {
-		node=new CycleNode(action);
+CycleNode * CycleGraph::getNode(const ModelAction *action)
+{
+	CycleNode *node = actionToNode.get(action);
+	if (node == NULL) {
+		node = new CycleNode(action);
 		actionToNode.put(action, node);
 #if SUPPORT_MOD_ORDER_DUMP
 		nodeList.push_back(node);
@@ -41,12 +43,13 @@ CycleNode * CycleGraph::getNode(const ModelAction *action) {
  * @param to The edge points to this ModelAction
  * @param from The edge comes from this ModelAction
  */
-void CycleGraph::addEdge(const ModelAction *from, const ModelAction *to) {
+void CycleGraph::addEdge(const ModelAction *from, const ModelAction *to)
+{
 	ASSERT(from);
 	ASSERT(to);
 
-	CycleNode *fromnode=getNode(from);
-	CycleNode *tonode=getNode(to);
+	CycleNode *fromnode = getNode(from);
+	CycleNode *tonode = getNode(to);
 
 	if (!hasCycles) {
 		// Reflexive edges are cycles
@@ -54,26 +57,27 @@ void CycleGraph::addEdge(const ModelAction *from, const ModelAction *to) {
 	}
 	if (!hasCycles) {
 		// Check for Cycles
-		hasCycles=checkReachable(tonode, fromnode);
+		hasCycles = checkReachable(tonode, fromnode);
 	}
 
 	if (fromnode->addEdge(tonode))
 		rollbackvector.push_back(fromnode);
 
 
-	CycleNode * rmwnode=fromnode->getRMW();
-
-	//If the fromnode has a rmwnode that is not the tonode, we
-	//should add an edge between its rmwnode and the tonode
-
-	//If tonode is also a rmw, don't do this check as the execution is
-	//doomed and we'll catch the problem elsewhere, but we want to allow
-	//for the possibility of sending to's write value to rmwnode
+	CycleNode *rmwnode = fromnode->getRMW();
 
-	if (rmwnode!=NULL&&!to->is_rmw()) {
+	/*
+	 * If the fromnode has a rmwnode that is not the tonode, we should add
+	 * an edge between its rmwnode and the tonode
+	 *
+	 * If tonode is also a rmw, don't do this check as the execution is
+	 * doomed and we'll catch the problem elsewhere, but we want to allow
+	 * for the possibility of sending to's write value to rmwnode
+	 */
+	if (rmwnode != NULL && !to->is_rmw()) {
 		if (!hasCycles) {
 			// Check for Cycles
-			hasCycles=checkReachable(tonode, rmwnode);
+			hasCycles = checkReachable(tonode, rmwnode);
 		}
 
 		if (rmwnode->addEdge(tonode))
@@ -86,16 +90,17 @@ void CycleGraph::addEdge(const ModelAction *from, const ModelAction *to) {
  *  can occur in between the rmw and the from action.  Only one RMW
  *  action can read from a given write.
  */
-void CycleGraph::addRMWEdge(const ModelAction *from, const ModelAction *rmw) {
+void CycleGraph::addRMWEdge(const ModelAction *from, const ModelAction *rmw)
+{
 	ASSERT(from);
 	ASSERT(rmw);
 
-	CycleNode *fromnode=getNode(from);
-	CycleNode *rmwnode=getNode(rmw);
+	CycleNode *fromnode = getNode(from);
+	CycleNode *rmwnode = getNode(rmw);
 
 	/* Two RMW actions cannot read from the same write. */
 	if (fromnode->setRMW(rmwnode)) {
-		hasRMWViolation=true;
+		hasRMWViolation = true;
 	} else {
 		rmwrollbackvector.push_back(fromnode);
 	}
@@ -109,7 +114,7 @@ void CycleGraph::addRMWEdge(const ModelAction *from, const ModelAction *rmw) {
 	 */
 	for (unsigned int i = 0; i < fromnode->getNumEdges(); i++) {
 		CycleNode *tonode = fromnode->getEdge(i);
-		if (tonode!=rmwnode) {
+		if (tonode != rmwnode) {
 			if (rmwnode->addEdge(tonode))
 				rollbackvector.push_back(rmwnode);
 		}
@@ -123,33 +128,35 @@ void CycleGraph::addRMWEdge(const ModelAction *from, const ModelAction *rmw) {
 	if (!hasCycles) {
 		// With promises we could be setting up a cycle here if we aren't
 		// careful...avoid it..
-		hasCycles=checkReachable(rmwnode, fromnode);
+		hasCycles = checkReachable(rmwnode, fromnode);
 	}
 	if (fromnode->addEdge(rmwnode))
 		rollbackvector.push_back(fromnode);
 }
 
 #if SUPPORT_MOD_ORDER_DUMP
-void CycleGraph::dumpNodes(FILE *file) {
-	for (unsigned int i=0;i<nodeList.size();i++) {
-		CycleNode *cn=nodeList[i];
-		const ModelAction *action=cn->getAction();
+void CycleGraph::dumpNodes(FILE *file)
+{
+	for (unsigned int i = 0; i < nodeList.size(); i++) {
+		CycleNode *cn = nodeList[i];
+		const ModelAction *action = cn->getAction();
 		fprintf(file, "N%u [label=\"%u, T%u\"];\n",action->get_seq_number(),action->get_seq_number(), action->get_tid());
-		if (cn->getRMW()!=NULL) {
+		if (cn->getRMW() != NULL) {
 			fprintf(file, "N%u -> N%u[style=dotted];\n", action->get_seq_number(), cn->getRMW()->getAction()->get_seq_number());
 		}
 		for (unsigned int j = 0; j < cn->getNumEdges(); j++) {
 			CycleNode *dst = cn->getEdge(j);
-			const ModelAction *dstaction=dst->getAction();
+			const ModelAction *dstaction = dst->getAction();
 			fprintf(file, "N%u -> N%u;\n", action->get_seq_number(), dstaction->get_seq_number());
 		}
 	}
 }
 
-void CycleGraph::dumpGraphToFile(const char *filename) {
+void CycleGraph::dumpGraphToFile(const char *filename)
+{
 	char buffer[200];
 	sprintf(buffer, "%s.dot",filename);
-	FILE *file=fopen(buffer, "w");
+	FILE *file = fopen(buffer, "w");
 	fprintf(file, "digraph %s {\n",filename);
 	dumpNodes(file);
 	fprintf(file,"}\n");
@@ -163,7 +170,8 @@ void CycleGraph::dumpGraphToFile(const char *filename) {
  * @param to The ModelAction to reach
  * @return True, @a from can reach @a to; otherwise, false
  */
-bool CycleGraph::checkReachable(const ModelAction *from, const ModelAction *to) {
+bool CycleGraph::checkReachable(const ModelAction *from, const ModelAction *to)
+{
 	CycleNode *fromnode = actionToNode.get(from);
 	CycleNode *tonode = actionToNode.get(to);
 
@@ -179,16 +187,17 @@ bool CycleGraph::checkReachable(const ModelAction *from, const ModelAction *to)
  * @param to The CycleNode to reach
  * @return True, @a from can reach @a to; otherwise, false
  */
-bool CycleGraph::checkReachable(CycleNode *from, CycleNode *to) {
+bool CycleGraph::checkReachable(CycleNode *from, CycleNode *to)
+{
 	std::vector<CycleNode *, ModelAlloc<CycleNode *> > queue;
 	discovered->reset();
 
 	queue.push_back(from);
 	discovered->put(from, from);
-	while(!queue.empty()) {
-		CycleNode * node=queue.back();
+	while (!queue.empty()) {
+		CycleNode *node = queue.back();
 		queue.pop_back();
-		if (node==to)
+		if (node == to)
 			return true;
 
 		for (unsigned int i = 0; i < node->getNumEdges(); i++) {
@@ -202,16 +211,16 @@ bool CycleGraph::checkReachable(CycleNode *from, CycleNode *to) {
 	return false;
 }
 
-bool CycleGraph::checkPromise(const ModelAction *fromact, Promise *promise) {
+bool CycleGraph::checkPromise(const ModelAction *fromact, Promise *promise)
+{
 	std::vector<CycleNode *, ModelAlloc<CycleNode *> > queue;
 	discovered->reset();
 	CycleNode *from = actionToNode.get(fromact);
 
-
 	queue.push_back(from);
 	discovered->put(from, from);
-	while(!queue.empty()) {
-		CycleNode * node=queue.back();
+	while (!queue.empty()) {
+		CycleNode *node = queue.back();
 		queue.pop_back();
 
 		if (promise->increment_threads(node->getAction()->get_tid())) {
@@ -229,19 +238,21 @@ bool CycleGraph::checkPromise(const ModelAction *fromact, Promise *promise) {
 	return false;
 }
 
-void CycleGraph::startChanges() {
-	ASSERT(rollbackvector.size()==0);
-	ASSERT(rmwrollbackvector.size()==0);
-	ASSERT(oldCycles==hasCycles);
-	ASSERT(oldRMWViolation==hasRMWViolation);
+void CycleGraph::startChanges()
+{
+	ASSERT(rollbackvector.size() == 0);
+	ASSERT(rmwrollbackvector.size() == 0);
+	ASSERT(oldCycles == hasCycles);
+	ASSERT(oldRMWViolation == hasRMWViolation);
 }
 
 /** Commit changes to the cyclegraph. */
-void CycleGraph::commitChanges() {
+void CycleGraph::commitChanges()
+{
 	rollbackvector.resize(0);
 	rmwrollbackvector.resize(0);
-	oldCycles=hasCycles;
-	oldRMWViolation=hasRMWViolation;
+	oldCycles = hasCycles;
+	oldRMWViolation = hasRMWViolation;
 }
 
 /** Rollback changes to the previous commit. */
@@ -298,16 +309,18 @@ unsigned int CycleNode::getNumEdges() const
  * Adds an edge from this CycleNode to another CycleNode.
  * @param node The node to which we add a directed edge
  */
-bool CycleNode::addEdge(CycleNode *node) {
-	for(unsigned int i=0;i<edges.size();i++)
-		if (edges[i]==node)
+bool CycleNode::addEdge(CycleNode *node)
+{
+	for (unsigned int i = 0; i < edges.size(); i++)
+		if (edges[i] == node)
 			return false;
 	edges.push_back(node);
 	return true;
 }
 
 /** @returns the RMW CycleNode that reads from the current CycleNode */
-CycleNode * CycleNode::getRMW() {
+CycleNode * CycleNode::getRMW() const
+{
 	return hasRMW;
 }
 
@@ -317,9 +330,10 @@ CycleNode * CycleNode::getRMW() {
  * @return True, if this node already was read by another RMW; false otherwise
  * @see CycleGraph::addRMWEdge
  */
-bool CycleNode::setRMW(CycleNode *node) {
-	if (hasRMW!=NULL)
+bool CycleNode::setRMW(CycleNode *node)
+{
+	if (hasRMW != NULL)
 		return true;
-	hasRMW=node;
+	hasRMW = node;
 	return false;
 }
diff --git a/cyclegraph.h b/cyclegraph.h
index 8fac5eb..0a6f738 100644
--- a/cyclegraph.h
+++ b/cyclegraph.h
@@ -31,13 +31,13 @@ class CycleGraph {
 	void rollbackChanges();
 #if SUPPORT_MOD_ORDER_DUMP
 	void dumpNodes(FILE *file);
-	void dumpGraphToFile(const char * filename);
+	void dumpGraphToFile(const char *filename);
 #endif
 
 	SNAPSHOTALLOC
  private:
 	CycleNode * getNode(const ModelAction *);
-	HashTable<CycleNode *, CycleNode *, uintptr_t, 4, model_malloc, model_calloc, model_free> * discovered;
+	HashTable<CycleNode *, CycleNode *, uintptr_t, 4, model_malloc, model_calloc, model_free> *discovered;
 
 	/** @brief A table for mapping ModelActions to CycleNodes */
 	HashTable<const ModelAction *, CycleNode *, uintptr_t, 4> actionToNode;
@@ -62,18 +62,18 @@ class CycleGraph {
 class CycleNode {
  public:
 	CycleNode(const ModelAction *action);
-	bool addEdge(CycleNode * node);
+	bool addEdge(CycleNode *node);
 	CycleNode * getEdge(unsigned int i) const;
 	unsigned int getNumEdges() const;
 	bool setRMW(CycleNode *);
-	CycleNode* getRMW();
-	const ModelAction * getAction() {return action;};
+	CycleNode * getRMW() const;
+	const ModelAction * getAction() const { return action; }
 
 	void popEdge() {
 		edges.pop_back();
-	};
+	}
 	void clearRMW() {
-		hasRMW=NULL;
+		hasRMW = NULL;
 	}
 
 	SNAPSHOTALLOC
@@ -86,7 +86,7 @@ class CycleNode {
 
 	/** Pointer to a RMW node that reads from this node, or NULL, if none
 	 * exists */
-	CycleNode * hasRMW;
+	CycleNode *hasRMW;
 };
 
 #endif