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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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_WorkerThread_h__
#define mozilla_dom_workers_WorkerThread_h__
#include "mozilla/Attributes.h"
#include "mozilla/CondVar.h"
#include "mozilla/DebugOnly.h"
#include "nsISupportsImpl.h"
#include "mozilla/RefPtr.h"
#include "nsThread.h"
class nsIRunnable;
namespace mozilla {
namespace dom {
namespace workers {
class RuntimeService;
class WorkerPrivate;
template <class> class WorkerPrivateParent;
class WorkerRunnable;
// This class lets us restrict the public methods that can be called on
// WorkerThread to RuntimeService and WorkerPrivate without letting them gain
// full access to private methods (as would happen if they were simply friends).
class WorkerThreadFriendKey
{
friend class RuntimeService;
friend class WorkerPrivate;
friend class WorkerPrivateParent<WorkerPrivate>;
WorkerThreadFriendKey();
~WorkerThreadFriendKey();
};
class WorkerThread final
: public nsThread
{
class Observer;
CondVar mWorkerPrivateCondVar;
// Protected by nsThread::mLock.
WorkerPrivate* mWorkerPrivate;
// Only touched on the target thread.
RefPtr<Observer> mObserver;
// Protected by nsThread::mLock and waited on with mWorkerPrivateCondVar.
uint32_t mOtherThreadsDispatchingViaEventTarget;
#ifdef DEBUG
// Protected by nsThread::mLock.
bool mAcceptingNonWorkerRunnables;
#endif
public:
static already_AddRefed<WorkerThread>
Create(const WorkerThreadFriendKey& aKey);
void
SetWorker(const WorkerThreadFriendKey& aKey, WorkerPrivate* aWorkerPrivate);
nsresult
DispatchPrimaryRunnable(const WorkerThreadFriendKey& aKey,
already_AddRefed<nsIRunnable> aRunnable);
nsresult
DispatchAnyThread(const WorkerThreadFriendKey& aKey,
already_AddRefed<WorkerRunnable> aWorkerRunnable);
uint32_t
RecursionDepth(const WorkerThreadFriendKey& aKey) const;
// Required for MinGW build #1336527 to handle compiler bug:
// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79582
NS_IMETHOD
RegisterIdlePeriod(already_AddRefed<nsIIdlePeriod> aIdlePeriod) override
{
return nsThread::RegisterIdlePeriod(already_AddRefed<nsIIdlePeriod>(aIdlePeriod.take()));
}
NS_DECL_ISUPPORTS_INHERITED
private:
WorkerThread();
~WorkerThread();
// This should only be called by consumers that have an
// nsIEventTarget/nsIThread pointer.
NS_IMETHOD
Dispatch(already_AddRefed<nsIRunnable> aRunnable, uint32_t aFlags) override;
NS_IMETHOD
DispatchFromScript(nsIRunnable* aRunnable, uint32_t aFlags) override;
NS_IMETHOD
DelayedDispatch(already_AddRefed<nsIRunnable>, uint32_t) override;
};
} // namespace workers
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_workers_WorkerThread_h__
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