From 07f95c597cde73fa127c72085e443f65cb2c68f5 Mon Sep 17 00:00:00 2001
From: Stephen Birarda <commit@birarda.com>
Date: Thu, 18 Dec 2014 14:08:55 -0800
Subject: [PATCH] add read locks for find on tbb hash

---
 libraries/networking/src/LimitedNodeList.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libraries/networking/src/LimitedNodeList.cpp b/libraries/networking/src/LimitedNodeList.cpp
index de533ec7be..907ac86704 100644
--- a/libraries/networking/src/LimitedNodeList.cpp
+++ b/libraries/networking/src/LimitedNodeList.cpp
@@ -352,6 +352,8 @@ int LimitedNodeList::findNodeAndUpdateWithDataFromPacket(const QByteArray& packe
 }
 
 SharedNodePointer LimitedNodeList::nodeWithUUID(const QUuid& nodeUUID) {
+    QReadLocker readLocker(&_nodeMutex);
+    
     NodeHash::const_iterator it = _nodeHash.find(nodeUUID);
     return it == _nodeHash.cend() ? SharedNodePointer() : it->second;
  }
@@ -386,10 +388,14 @@ void LimitedNodeList::reset() {
 }
 
 void LimitedNodeList::killNodeWithUUID(const QUuid& nodeUUID) {
+    _nodeMutex.lockForRead();
+    
     NodeHash::iterator it = _nodeHash.find(nodeUUID);
     if (it != _nodeHash.end()) {
         SharedNodePointer matchingNode = it->second;
         
+        _nodeMutex.unlock();
+        
         QWriteLocker writeLocker(&_nodeMutex);
         _nodeHash.unsafe_erase(it);