From 29f99ad8eea3c32b435ddb009c2d20fee7a13df2 Mon Sep 17 00:00:00 2001
From: Brian Norris <banorris@uci.edu>
Date: Fri, 25 Jan 2013 17:19:55 -0800
Subject: [PATCH 1/1] cyclegraph: add Promise CycleNode

A very bare-bones constructor.
---
 cyclegraph.cc | 12 ++++++++++++
 cyclegraph.h  | 12 +++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/cyclegraph.cc b/cyclegraph.cc
index 00b8cd85..7a353283 100644
--- a/cyclegraph.cc
+++ b/cyclegraph.cc
@@ -279,6 +279,18 @@ bool CycleGraph::checkForCycles() const
  */
 CycleNode::CycleNode(const ModelAction *act) :
 	action(act),
+	promise(NULL),
+	hasRMW(NULL)
+{
+}
+
+/**
+ * @brief Constructor for a Promise CycleNode
+ * @param promise The Promise which was generated
+ */
+CycleNode::CycleNode(const Promise *promise) :
+	action(NULL),
+	promise(promise),
 	hasRMW(NULL)
 {
 }
diff --git a/cyclegraph.h b/cyclegraph.h
index 8efd5d41..f7b346c1 100644
--- a/cyclegraph.h
+++ b/cyclegraph.h
@@ -60,10 +60,14 @@ class CycleGraph {
 	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;
@@ -78,11 +82,17 @@ class CycleNode {
 		edges.pop_back();
 	}
 
+	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;
 
-- 
2.34.1