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129 lines
3.8 KiB
C++
129 lines
3.8 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
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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 Web Workers.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Ben Turner <bent.mozilla@gmail.com> (Original Author)
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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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#ifndef mozilla_dom_workers_workers_h__
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#define mozilla_dom_workers_workers_h__
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#include "jspubtd.h"
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#include "jsapi.h"
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#include "nsISupportsImpl.h"
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#include "mozilla/Mutex.h"
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#define BEGIN_WORKERS_NAMESPACE \
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namespace mozilla { namespace dom { namespace workers {
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#define END_WORKERS_NAMESPACE \
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} /* namespace workers */ } /* namespace dom */ } /* namespace mozilla */
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#define USING_WORKERS_NAMESPACE \
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using namespace mozilla::dom::workers;
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#define WORKERS_SHUTDOWN_TOPIC "web-workers-shutdown"
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class nsPIDOMWindow;
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BEGIN_WORKERS_NAMESPACE
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class WorkerPrivate;
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struct PrivatizableBase
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{ };
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#ifdef DEBUG
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void
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AssertIsOnMainThread();
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#else
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inline void
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AssertIsOnMainThread()
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{ }
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#endif
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// All of these are implemented in RuntimeService.cpp
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JSBool
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ResolveWorkerClasses(JSContext* aCx, JSObject* aObj, jsid aId, uintN aFlags,
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JSObject** aObjp);
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void
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CancelWorkersForWindow(JSContext* aCx, nsPIDOMWindow* aWindow);
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void
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SuspendWorkersForWindow(JSContext* aCx, nsPIDOMWindow* aWindow);
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void
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ResumeWorkersForWindow(JSContext* aCx, nsPIDOMWindow* aWindow);
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class WorkerTask {
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WorkerTask)
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virtual ~WorkerTask() { }
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virtual bool RunTask(JSContext* aCx) = 0;
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};
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class WorkerCrossThreadDispatcher {
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WorkerCrossThreadDispatcher)
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WorkerCrossThreadDispatcher(WorkerPrivate* aPrivate) :
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mMutex("WorkerCrossThreadDispatcher"), mPrivate(aPrivate) {}
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void Forget()
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{
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mozilla::MutexAutoLock lock(mMutex);
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mPrivate = nsnull;
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}
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/**
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* Generically useful function for running a bit of C++ code on the worker
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* thread.
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*/
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bool PostTask(WorkerTask* aTask);
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protected:
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friend class WorkerPrivate;
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// Must be acquired *before* the WorkerPrivate's mutex, when they're both held.
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mozilla::Mutex mMutex;
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WorkerPrivate* mPrivate;
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};
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WorkerCrossThreadDispatcher*
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GetWorkerCrossThreadDispatcher(JSContext* aCx, jsval aWorker);
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END_WORKERS_NAMESPACE
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#endif /* mozilla_dom_workers_workers_h__ */
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