X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=cyclegraph.h;h=a909c10b50a49f97453bf1f6114223400b11c4ac;hb=eb07120dfdbb206124f7857016a71b6ef0b9eb99;hp=8668077ed271cc887c7a249f470a8345c54d1539;hpb=c1372661a92b8d2ba3bc977ebbabf52127354bea;p=model-checker.git

diff --git a/cyclegraph.h b/cyclegraph.h
index 8668077..a909c10 100644
--- a/cyclegraph.h
+++ b/cyclegraph.h
@@ -26,7 +26,6 @@ class CycleGraph {
 	~CycleGraph();
 	void addEdge(const ModelAction *from, const ModelAction *to);
 	bool checkForCycles() const;
-	bool checkForRMWViolation() const;
 	void addRMWEdge(const ModelAction *from, const ModelAction *rmw);
 	bool checkPromise(const ModelAction *from, Promise *p) const;
 	bool checkReachable(const ModelAction *from, const ModelAction *to) const;
@@ -57,38 +56,46 @@ class CycleGraph {
 	bool hasCycles;
 	bool oldCycles;
 
-	bool hasRMWViolation;
-	bool oldRMWViolation;
-
 	std::vector< CycleNode *, SnapshotAlloc<CycleNode *> > rollbackvector;
 	std::vector< CycleNode *, SnapshotAlloc<CycleNode *> > rmwrollbackvector;
 };
 
-/** @brief A node within a CycleGraph; corresponds to one ModelAction */
+/**
+ * @brief A node within a CycleGraph; corresponds either to one ModelAction or
+ * to a promised future value
+ */
 class CycleNode {
  public:
 	CycleNode(const ModelAction *act);
+	CycleNode(const Promise *promise);
 	bool addEdge(CycleNode *node);
 	CycleNode * getEdge(unsigned int i) const;
 	unsigned int getNumEdges() const;
 	CycleNode * getBackEdge(unsigned int i) const;
 	unsigned int getNumBackEdges() const;
+	CycleNode * removeEdge();
+	CycleNode * removeBackEdge();
+
 	bool setRMW(CycleNode *);
 	CycleNode * getRMW() const;
+	void clearRMW() { hasRMW = NULL; }
 	const ModelAction * getAction() const { return action; }
 
 	void popEdge() {
 		edges.pop_back();
 	}
-	void clearRMW() {
-		hasRMW = NULL;
-	}
+
+	bool is_promise() const { return !action; }
 
 	SNAPSHOTALLOC
  private:
 	/** @brief The ModelAction that this node represents */
 	const ModelAction *action;
 
+	/** @brief The promise represented by this node; only valid when action
+	 * is NULL */
+	const Promise *promise;
+
 	/** @brief The edges leading out from this node */
 	std::vector< CycleNode *, SnapshotAlloc<CycleNode *> > edges;