mirror of
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95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
/* vim:set ts=4 sw=4 sts=4 et cin: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@meer.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsProxyRelease.h"
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#include "nsThreadUtils.h"
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#include "nsAutoPtr.h"
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class nsProxyReleaseEvent : public nsRunnable
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{
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public:
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nsProxyReleaseEvent(nsISupports *doomed)
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: mDoomed(doomed) {
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}
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NS_IMETHOD Run()
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{
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mDoomed->Release();
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return NS_OK;
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}
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private:
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nsISupports *mDoomed;
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};
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nsresult
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NS_ProxyRelease(nsIEventTarget *target, nsISupports *doomed,
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PRBool alwaysProxy)
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{
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nsresult rv;
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if (!target) {
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NS_RELEASE(doomed);
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return NS_OK;
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}
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if (!alwaysProxy) {
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PRBool onCurrentThread = PR_FALSE;
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rv = target->IsOnCurrentThread(&onCurrentThread);
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if (NS_SUCCEEDED(rv) && onCurrentThread) {
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NS_RELEASE(doomed);
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return NS_OK;
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}
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}
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nsRefPtr<nsIRunnable> ev = new nsProxyReleaseEvent(doomed);
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if (!ev) {
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// we do not release doomed here since it may cause a delete on the
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// wrong thread. better to leak than crash.
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return NS_ERROR_OUT_OF_MEMORY;
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}
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rv = target->Dispatch(ev, NS_DISPATCH_NORMAL);
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if (NS_FAILED(rv)) {
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NS_WARNING("failed to post proxy release event");
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// again, it is better to leak the doomed object than risk crashing as
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// a result of deleting it on the wrong thread.
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}
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return rv;
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}
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