diff -r 000000000000 -r 6474c204b198 nsprpub/pr/src/cplus/rclock.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nsprpub/pr/src/cplus/rclock.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+/*
+** C++ access to NSPR locks (PRLock)
+*/
+
+#include "rclock.h"
+#include <prlog.h>
+
+RCLock::RCLock()
+{
+    lock = PR_NewLock();  /* it might be NULL */
+    PR_ASSERT(NULL != lock);
+}  /* RCLock::RCLock */
+
+RCLock::~RCLock()
+{
+    if (NULL != lock) PR_DestroyLock(lock);
+    lock = NULL;
+}  /* RCLock::~RCLock */
+
+void RCLock::Acquire()
+{
+    PR_ASSERT(NULL != lock);
+    PR_Lock(lock);
+}  /* RCLock::Acquire */
+
+void RCLock::Release()
+{
+    PRStatus rv;
+    PR_ASSERT(NULL != lock);
+    rv = PR_Unlock(lock);
+    PR_ASSERT(PR_SUCCESS == rv);
+}  /* RCLock::Release */
+
+/* RCLock.cpp */
+