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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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_RemoteWorkerService_h
#define mozilla_dom_RemoteWorkerService_h
#include "nsCOMPtr.h"
#include "nsIObserver.h"
class nsIThread;
namespace mozilla::dom {
class RemoteWorkerServiceChild;
/**
* Every process has a RemoteWorkerService which does the actual spawning of
* RemoteWorkerChild instances. The RemoteWorkerService creates a "Worker
* Launcher" thread at initialization on which it creates a
* RemoteWorkerServiceChild to service spawn requests. The thread is exposed as
* RemoteWorkerService::Thread(). A new/distinct thread is used because we
* (eventually) don't want to deal with main-thread contention, content
* processes have no equivalent of a PBackground thread, and actors are bound to
* specific threads.
*
* (Disclaimer: currently most RemoteWorkerOps need to happen on the main thread
* because the main-thread ends up as the owner of the worker and all
* manipulation of the worker must happen from the owning thread.)
*/
class RemoteWorkerService final : public nsIObserver {
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIOBSERVER
// To be called when a process is initialized on main-thread.
static void Initialize();
static nsIThread* Thread();
private:
RemoteWorkerService();
~RemoteWorkerService();
nsresult InitializeOnMainThread();
void InitializeOnTargetThread();
void CloseActorOnTargetThread();
nsCOMPtr<nsIThread> mThread;
RefPtr<RemoteWorkerServiceChild> mActor;
};
} // namespace mozilla::dom
#endif // mozilla_dom_RemoteWorkerService_h
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