зеркало из https://github.com/mozilla/gecko-dev.git
111 строки
2.7 KiB
C++
111 строки
2.7 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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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 "jsapi.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/Mutex.h"
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#include "mozilla/StandardInteger.h"
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "nsDebug.h"
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#include "nsStringGlue.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, JSHandleObject aObj, JSHandleId aId, unsigned aFlags,
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JSMutableHandleObject 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 = nullptr;
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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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// Random unique constant to facilitate JSPrincipal debugging
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const uint32_t kJSPrincipalsDebugToken = 0x7e2df9d2;
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namespace exceptions {
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// Implemented in Exceptions.cpp
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void
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ThrowDOMExceptionForNSResult(JSContext* aCx, nsresult aNSResult);
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} // namespace exceptions
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END_WORKERS_NAMESPACE
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#endif // mozilla_dom_workers_workers_h__
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