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/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_workers_workers_h__
#define mozilla_dom_workers_workers_h__
#include "jsapi.h"
#include "mozilla/Attributes.h"
#include "mozilla/Mutex.h"
#include "mozilla/StandardInteger.h"
#include "nsAutoPtr.h"
#include "nsCOMPtr.h"
#include "nsDebug.h"
#include "nsStringGlue.h"
#define BEGIN_WORKERS_NAMESPACE \
namespace mozilla { namespace dom { namespace workers {
#define END_WORKERS_NAMESPACE \
} /* namespace workers */ } /* namespace dom */ } /* namespace mozilla */
#define USING_WORKERS_NAMESPACE \
using namespace mozilla::dom::workers;
#define WORKERS_SHUTDOWN_TOPIC "web-workers-shutdown"
class nsPIDOMWindow;
BEGIN_WORKERS_NAMESPACE
class WorkerPrivate;
struct PrivatizableBase
{ };
#ifdef DEBUG
void
AssertIsOnMainThread();
#else
inline void
AssertIsOnMainThread()
{ }
#endif
// All of these are implemented in RuntimeService.cpp
JSBool
ResolveWorkerClasses(JSContext* aCx, JSHandleObject aObj, JSHandleId aId, unsigned aFlags,
JSMutableHandleObject aObjp);
void
CancelWorkersForWindow(JSContext* aCx, nsPIDOMWindow* aWindow);
void
SuspendWorkersForWindow(JSContext* aCx, nsPIDOMWindow* aWindow);
void
ResumeWorkersForWindow(JSContext* aCx, nsPIDOMWindow* aWindow);
class WorkerTask {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WorkerTask)
virtual ~WorkerTask() { }
virtual bool RunTask(JSContext* aCx) = 0;
};
class WorkerCrossThreadDispatcher {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WorkerCrossThreadDispatcher)
WorkerCrossThreadDispatcher(WorkerPrivate* aPrivate) :
mMutex("WorkerCrossThreadDispatcher"), mPrivate(aPrivate) {}
void Forget()
{
mozilla::MutexAutoLock lock(mMutex);
mPrivate = nullptr;
}
/**
* Generically useful function for running a bit of C++ code on the worker
* thread.
*/
bool PostTask(WorkerTask* aTask);
protected:
friend class WorkerPrivate;
// Must be acquired *before* the WorkerPrivate's mutex, when they're both held.
mozilla::Mutex mMutex;
WorkerPrivate* mPrivate;
};
WorkerCrossThreadDispatcher*
GetWorkerCrossThreadDispatcher(JSContext* aCx, jsval aWorker);
// Random unique constant to facilitate JSPrincipal debugging
const uint32_t kJSPrincipalsDebugToken = 0x7e2df9d2;
namespace exceptions {
// Implemented in Exceptions.cpp
void
ThrowDOMExceptionForNSResult(JSContext* aCx, nsresult aNSResult);
} // namespace exceptions
END_WORKERS_NAMESPACE
#endif // mozilla_dom_workers_workers_h__
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