Assert when shared buffers are used on multiple threads. b=112547 r=jst sr=darin

git-svn-id: svn://10.0.0.236/trunk@151620 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/xpcom/string/src/Makefile.in

@@ -37,6 +37,7 @@ REQUIRES	= xpcom \
 CPPSRCS		=				\
 		nsASingleFragmentString.cpp	\
 		nsAString.cpp			\
+		nsBufferHandle.cpp		\
 		nsDependentConcatenation.cpp	\
 		nsDependentSubstring.cpp	\
 		nsFragmentedString.cpp		\

mozilla/xpcom/string/src/nsBufferHandle.cpp

@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is nsBufferHandle.cpp.
+ *
+ * The Initial Developer of the Original Code is L. David Baron.
+ * Portions created by the Initial Developer are Copyright (C) 2002
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   L. David Baron <dbaron@fas.harvard.edu> (original author)
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "nsBufferHandle.h"
+
+#ifdef DEBUG
+
+#include "prthread.h"
+
+nsSingleThreadVerifier::nsSingleThreadVerifier()
+{
+  mThread = PR_GetCurrentThread();
+}
+
+void nsSingleThreadVerifier::verify() const
+{
+  NS_ASSERTION(mThread == PR_GetCurrentThread(),
+               "sharable string being used on multiple threads");
+}
+
+#endif