Bug 1246931: Add support for |RefPtr<DBusPendingCall>|, r=shuang

|RefPtr<DBusPendingCall>| manages instances of |DBusPendingCall| and frees
each instance when its last reference gets released.

ipc/dbus/DBusPendingCallRefPtr.h

@@ -0,0 +1,30 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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 mozilla_ipc_DBusPendingCallRefPtr_h
+#define mozilla_ipc_DBusPendingCallRefPtr_h
+
+#include <dbus/dbus.h>
+#include "mozilla/RefPtr.h"
+
+namespace mozilla {
+
+template<>
+struct RefPtrTraits<DBusPendingCall>
+{
+  static void AddRef(DBusPendingCall* aPendingCall) {
+    MOZ_ASSERT(aPendingCall);
+    dbus_pending_call_ref(aPendingCall);
+  }
+  static void Release(DBusPendingCall* aPendingCall) {
+    MOZ_ASSERT(aPendingCall);
+    dbus_pending_call_unref(aPendingCall);
+  }
+};
+
+} // namespace mozilla
+
+#endif // mozilla_ipc_DBusPendingCallRefPtr_h

ipc/dbus/moz.build

@@ -7,6 +7,7 @@
 EXPORTS.mozilla.ipc += [
     'DBusConnectionRefPtr.h',
     'DBusMessageRefPtr.h',
+    'DBusPendingCallRefPtr.h',
     'DBusUtils.h',
     'DBusWatcher.h',
     'RawDBusConnection.h',