gecko/dom/src/threads/nsDOMThreadService.h

147 lines
4.7 KiB
C++

/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is worker threads.
*
* The Initial Developer of the Original Code is
* Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com> (Original Author)
* Ben Turner <bent.mozilla@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef __NSDOMTHREADSERVICE_H__
#define __NSDOMTHREADSERVICE_H__
// Interfaces
#include "nsIEventTarget.h"
#include "nsIObserver.h"
#include "nsIThreadPool.h"
#include "nsIDOMThreads.h"
// Other includes
#include "jsapi.h"
#include "nsAutoPtr.h"
#include "nsCOMPtr.h"
#include "nsRefPtrHashtable.h"
#include "nsTPtrArray.h"
#include "prmon.h"
#include "prlog.h"
#ifdef PR_LOGGING
extern PRLogModuleInfo* gDOMThreadsLog;
#endif
class nsDOMWorkerPool;
class nsDOMWorkerRunnable;
class nsDOMWorkerThread;
class nsDOMWorkerTimeout;
class nsIJSRuntimeService;
class nsIScriptGlobalObject;
class nsIThreadJSContextStack;
class nsIXPConnect;
class nsIXPCSecurityManager;
class nsDOMThreadService : public nsIEventTarget,
public nsIObserver,
public nsIThreadPoolListener,
public nsIDOMThreadService
{
friend class nsDOMWorkerPool;
friend class nsDOMWorkerRunnable;
friend class nsDOMWorkerThread;
friend class nsDOMWorkerTimeout;
friend class nsDOMWorkerXHR;
friend class nsDOMWorkerXHRProxy;
friend class nsLayoutStatics;
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIEVENTTARGET
NS_DECL_NSIOBSERVER
NS_DECL_NSITHREADPOOLLISTENER
NS_DECL_NSIDOMTHREADSERVICE
// Any DOM consumers that need access to this service should use this method.
static already_AddRefed<nsIDOMThreadService> GetOrInitService();
// Simple getter for this service. This does not create the service if it
// hasn't been created already, and it never AddRef's!
static nsDOMThreadService* get();
// Easy access to the services we care about.
static nsIJSRuntimeService* JSRuntimeService();
static nsIThreadJSContextStack* ThreadJSContextStack();
static nsIXPCSecurityManager* WorkerSecurityManager();
void CancelWorkersForGlobal(nsIScriptGlobalObject* aGlobalObject);
void SuspendWorkersForGlobal(nsIScriptGlobalObject* aGlobalObject);
void ResumeWorkersForGlobal(nsIScriptGlobalObject* aGlobalObject);
nsresult ChangeThreadPoolMaxThreads(PRInt16 aDelta);
private:
nsDOMThreadService();
~nsDOMThreadService();
nsresult Init();
void Cleanup();
static void Shutdown();
nsresult Dispatch(nsDOMWorkerThread* aWorker,
nsIRunnable* aRunnable);
void WorkerComplete(nsDOMWorkerRunnable* aRunnable);
void WaitForCanceledWorker(nsDOMWorkerThread* aWorker);
static JSContext* CreateJSContext();
void NoteDyingPool(nsDOMWorkerPool* aPool);
void TimeoutReady(nsDOMWorkerTimeout* aTimeout);
// Our internal thread pool.
nsCOMPtr<nsIThreadPool> mThreadPool;
// Weak references, only ever touched on the main thread!
nsTPtrArray<nsDOMWorkerPool> mPools;
// mMonitor protects all access to mWorkersInProgress and
// mCreationsInProgress.
PRMonitor* mMonitor;
// A map from nsDOMWorkerThread to nsDOMWorkerRunnable.
nsRefPtrHashtable<nsVoidPtrHashKey, nsDOMWorkerRunnable> mWorkersInProgress;
};
#endif /* __NSDOMTHREADSERVICE_H__ */