LCOV - code coverage report
Current view: directory - xpcom/glue - nsProxyRelease.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 24 0 0.0 %
Date: 2012-06-02 Functions: 5 0 0.0 %

       1                 : /* vim:set ts=4 sw=4 sts=4 et cin: */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2003
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Darin Fisher <darin@meer.net>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsProxyRelease.h"
      40                 : #include "nsThreadUtils.h"
      41                 : #include "nsAutoPtr.h"
      42                 : 
      43                 : class nsProxyReleaseEvent : public nsRunnable
      44               0 : {
      45                 : public:
      46               0 :     nsProxyReleaseEvent(nsISupports *doomed)
      47               0 :         : mDoomed(doomed) {
      48               0 :     }
      49                 : 
      50               0 :     NS_IMETHOD Run()
      51                 :     {
      52               0 :         mDoomed->Release();
      53               0 :         return NS_OK;
      54                 :     }
      55                 : 
      56                 : private:
      57                 :     nsISupports *mDoomed;
      58                 : };
      59                 : 
      60                 : nsresult
      61               0 : NS_ProxyRelease(nsIEventTarget *target, nsISupports *doomed,
      62                 :                 bool alwaysProxy)
      63                 : {
      64                 :     nsresult rv;
      65                 : 
      66               0 :     if (!target) {
      67               0 :         NS_RELEASE(doomed);
      68               0 :         return NS_OK;
      69                 :     }
      70                 : 
      71               0 :     if (!alwaysProxy) {
      72               0 :         bool onCurrentThread = false;
      73               0 :         rv = target->IsOnCurrentThread(&onCurrentThread);
      74               0 :         if (NS_SUCCEEDED(rv) && onCurrentThread) {
      75               0 :             NS_RELEASE(doomed);
      76               0 :             return NS_OK;
      77                 :         }
      78                 :     }
      79                 : 
      80               0 :     nsRefPtr<nsIRunnable> ev = new nsProxyReleaseEvent(doomed);
      81               0 :     if (!ev) {
      82                 :         // we do not release doomed here since it may cause a delete on the
      83                 :         // wrong thread.  better to leak than crash. 
      84               0 :         return NS_ERROR_OUT_OF_MEMORY;
      85                 :     }
      86                 : 
      87               0 :     rv = target->Dispatch(ev, NS_DISPATCH_NORMAL);
      88               0 :     if (NS_FAILED(rv)) {
      89               0 :         NS_WARNING("failed to post proxy release event");
      90                 :         // again, it is better to leak the doomed object than risk crashing as
      91                 :         // a result of deleting it on the wrong thread.
      92                 :     }
      93               0 :     return rv;
      94                 : }

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