From bc3f64137360764a046c694a559ed4e0fcbae5c8 Mon Sep 17 00:00:00 2001
From: JoelKatz <DavidJoelSchwartz@GMail.com>
Date: Fri, 14 Dec 2012 09:56:28 -0800
Subject: [PATCH] Track when a node was last accessed.

---
 src/cpp/ripple/SHAMap.cpp      | 1 +
 src/cpp/ripple/SHAMap.h        | 5 +++--
 src/cpp/ripple/SHAMapNodes.cpp | 4 ++--
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/cpp/ripple/SHAMap.cpp b/src/cpp/ripple/SHAMap.cpp
index 58524afab..bf55ea16c 100644
--- a/src/cpp/ripple/SHAMap.cpp
+++ b/src/cpp/ripple/SHAMap.cpp
@@ -144,6 +144,7 @@ SHAMapTreeNode::pointer SHAMap::checkCacheNode(const SHAMapNode& iNode)
 	boost::unordered_map<SHAMapNode, SHAMapTreeNode::pointer>::iterator it = mTNByID.find(iNode);
 	if (it == mTNByID.end())
 		return SHAMapTreeNode::pointer();
+	it->second->touch(mSeq);
 	return it->second;
 }
 
diff --git a/src/cpp/ripple/SHAMap.h b/src/cpp/ripple/SHAMap.h
index e02627bbf..df464bef1 100644
--- a/src/cpp/ripple/SHAMap.h
+++ b/src/cpp/ripple/SHAMap.h
@@ -161,7 +161,7 @@ private:
 	uint256	mHash;
 	uint256 mHashes[16];
 	SHAMapItem::pointer mItem;
-	uint32 mSeq;
+	uint32 mSeq, mAccessSeq;
 	TNType mType;
 	bool mFullBelow;
 
@@ -183,7 +183,8 @@ public:
 
 	// node functions
 	uint32 getSeq() const				{ return mSeq; }
-	void setSeq(uint32 s)				{ mSeq = s; }
+	void setSeq(uint32 s)				{ mAccessSeq = mSeq = s; }
+	void touch(uint32 s)				{ mAccessSeq = s; }
 	const uint256& getNodeHash() const	{ return mHash; }
 	TNType getType() const				{ return mType; }
 
diff --git a/src/cpp/ripple/SHAMapNodes.cpp b/src/cpp/ripple/SHAMapNodes.cpp
index f4caccb8b..a296c54f7 100644
--- a/src/cpp/ripple/SHAMapNodes.cpp
+++ b/src/cpp/ripple/SHAMapNodes.cpp
@@ -173,8 +173,8 @@ void SHAMapNode::dump() const
 	Log(lsDEBUG) << getString();
 }
 
-SHAMapTreeNode::SHAMapTreeNode(uint32 seq, const SHAMapNode& nodeID) : SHAMapNode(nodeID), mHash(0), mSeq(seq),
-	mType(tnERROR), mFullBelow(false)
+SHAMapTreeNode::SHAMapTreeNode(uint32 seq, const SHAMapNode& nodeID) : SHAMapNode(nodeID), mHash(0),
+	mSeq(seq), mAccessSeq(seq),	mType(tnERROR), mFullBelow(false)
 {
 }