140 lines
3.8 KiB
C++
140 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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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.org code.
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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) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Stuart Parmenter <pavlov@netscape.com>
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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 "imgThread.h"
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#include "nsIEventQueueService.h"
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#include "nsIComponentManager.h"
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#include "nsIServiceManager.h"
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#include "prlock.h"
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#include "nsAutoLock.h"
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NS_IMPL_THREADSAFE_ISUPPORTS1(imgThread, nsIRunnable)
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imgThread::imgThread()
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{
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/* member initializers and constructor code */
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mLock = PR_NewLock();
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mMonitor = PR_NewMonitor();
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}
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imgThread::~imgThread()
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{
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/* destructor code */
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PR_DestroyLock(mLock);
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PR_DestroyMonitor(mMonitor);
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}
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nsresult imgThread::Init()
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{
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if (!mThread) {
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nsresult rv = NS_NewThread(getter_AddRefs(mThread),
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NS_STATIC_CAST(nsIRunnable*, this),
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0,
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PR_UNJOINABLE_THREAD,
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PR_PRIORITY_NORMAL,
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PR_GLOBAL_THREAD);
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if (NS_FAILED(rv))
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return rv;
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}
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return NS_OK;
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}
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nsresult imgThread::GetEventQueue(nsIEventQueue **aEventQueue)
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{
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PR_EnterMonitor(mMonitor);
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if (!mEventQueue)
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PR_Wait(mMonitor, PR_INTERVAL_NO_TIMEOUT);
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*aEventQueue = mEventQueue;
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NS_ADDREF(*aEventQueue);
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PR_ExitMonitor(mMonitor);
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return NS_OK;
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}
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/** nsIRunnable methods **/
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/* void Run(); */
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NS_IMETHODIMP imgThread::Run()
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{
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nsresult rv;
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nsCOMPtr<nsIEventQueue> currentThreadQ;
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PR_EnterMonitor(mMonitor);
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nsCOMPtr<nsIEventQueueService> eventService(do_GetService("@mozilla.org/event-queue-service;1", &rv));
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if (NS_FAILED(rv)) return rv;
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rv = eventService->CreateMonitoredThreadEventQueue();
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if (NS_FAILED(rv)) return rv;
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rv = eventService->GetThreadEventQueue(NS_CURRENT_THREAD, getter_AddRefs(mEventQueue));
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NS_ASSERTION(NS_SUCCEEDED(rv), "unable to create event queue");
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if (NS_FAILED(rv)) return rv;
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PR_Notify(mMonitor);
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PR_ExitMonitor(mMonitor);
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PLEvent *event;
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while (1) {
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rv = mEventQueue->WaitForEvent(&event);
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if (NS_FAILED(rv)) return rv;
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rv = mEventQueue->HandleEvent(event);
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if (NS_FAILED(rv)) return rv;
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}
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rv = eventService->DestroyThreadEventQueue();
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if (NS_FAILED(rv)) return rv;
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mEventQueue = nsnull;
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return NS_OK;
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}
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