diff -r 000000000000 -r 6474c204b198 js/src/frontend/ParseMaps-inl.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/frontend/ParseMaps-inl.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,63 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * 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/. */
+
+#ifndef frontend_ParseMaps_inl_h
+#define frontend_ParseMaps_inl_h
+
+#include "frontend/ParseMaps.h"
+
+#include "jscntxtinlines.h"
+
+namespace js {
+namespace frontend {
+
+template <class Map>
+inline bool
+AtomThingMapPtr<Map>::ensureMap(ExclusiveContext *cx)
+{
+    if (map_)
+        return true;
+
+    AutoLockForExclusiveAccess lock(cx);
+    map_ = cx->parseMapPool().acquire<Map>();
+    return !!map_;
+}
+
+template <class Map>
+inline void
+AtomThingMapPtr<Map>::releaseMap(ExclusiveContext *cx)
+{
+    if (!map_)
+        return;
+
+    AutoLockForExclusiveAccess lock(cx);
+    cx->parseMapPool().release(map_);
+    map_ = nullptr;
+}
+
+template <typename ParseHandler>
+inline bool
+AtomDecls<ParseHandler>::init()
+{
+    AutoLockForExclusiveAccess lock(cx);
+    map = cx->parseMapPool().acquire<AtomDefnListMap>();
+    return map;
+}
+
+template <typename ParseHandler>
+inline
+AtomDecls<ParseHandler>::~AtomDecls()
+{
+    if (map) {
+        AutoLockForExclusiveAccess lock(cx);
+        cx->parseMapPool().release(map);
+    }
+}
+
+} /* namespace frontend */
+} /* namespace js */
+
+#endif /* frontend_ParseMaps_inl_h */