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66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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* aDoomed) : mDoomed(aDoomed) {}
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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* aTarget, nsISupports* aDoomed,
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bool aAlwaysProxy)
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{
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nsresult rv;
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if (!aDoomed) {
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// nothing to do
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return NS_OK;
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}
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if (!aTarget) {
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NS_RELEASE(aDoomed);
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return NS_OK;
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}
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if (!aAlwaysProxy) {
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bool onCurrentThread = false;
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rv = aTarget->IsOnCurrentThread(&onCurrentThread);
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if (NS_SUCCEEDED(rv) && onCurrentThread) {
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NS_RELEASE(aDoomed);
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return NS_OK;
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}
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}
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nsRefPtr<nsIRunnable> ev = new nsProxyReleaseEvent(aDoomed);
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if (!ev) {
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// we do not release aDoomed 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 = aTarget->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 aDoomed 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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