gecko-dev/dom/workers/remoteworkers/RemoteWorkerChild.h

/* -*- 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_RemoteWorkerChild_h
#define mozilla_dom_RemoteWorkerChild_h

#include "mozilla/dom/PRemoteWorkerChild.h"
#include "mozilla/UniquePtr.h"
#include "nsISupportsImpl.h"

class nsIConsoleReportCollector;

namespace mozilla {
namespace dom {

class RemoteWorkerData;
class WeakWorkerRef;
class WorkerErrorReport;
class WorkerPrivate;
class OptionalMessagePortIdentifier;

class RemoteWorkerChild final : public PRemoteWorkerChild
{
public:
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(RemoteWorkerChild)

  RemoteWorkerChild();

  void
  ExecWorker(const RemoteWorkerData& aData);

  void
  InitializeOnWorker(WorkerPrivate* aWorkerPrivate);

  void
  ShutdownOnWorker();

  void
  AddPortIdentifier(JSContext* aCx,
                    WorkerPrivate* aWorkerPrivate,
                    const MessagePortIdentifier& aPortIdentifier);

  void
  ErrorPropagationOnMainThread(const WorkerErrorReport* aReport,
                               bool aIsErrorEvent);

  void
  CloseWorkerOnMainThread();

  void
  FlushReportsOnMainThread(nsIConsoleReportCollector* aReporter);

private:
  class InitializeWorkerRunnable;

  ~RemoteWorkerChild();

  void
  ActorDestroy(ActorDestroyReason aWhy) override;

  mozilla::ipc::IPCResult
  RecvExecOp(const RemoteWorkerOp& aOp) override;

  void
  RecvExecOpOnMainThread(const RemoteWorkerOp& aOp);

  nsresult
  ExecWorkerOnMainThread(const RemoteWorkerData& aData);

  void
  ErrorPropagation(const ErrorValue& aValue);

  void
  ErrorPropagationDispatch(nsresult aError);

  void
  CreationSucceededOnAnyThread();

  void
  CreationSucceeded();

  void
  CreationFailedOnAnyThread();

  void
  CreationFailed();

  void
  WorkerTerminated();

  // Touched on main-thread only.
  nsTArray<uint64_t> mWindowIDs;

  RefPtr<WorkerPrivate> mWorkerPrivate;
  RefPtr<WeakWorkerRef> mWorkerRef;
  bool mIPCActive;

  enum WorkerState
  {
    // CreationSucceeded/CreationFailed not called yet.
    ePending,

    // The worker is not created yet, but we want to terminate as soon as
    // possible.
    ePendingTerminated,

    // Worker up and running.
    eRunning,

    // Worker terminated.
    eTerminated,
  };

  // Touched only on the owning thread (Worker Launcher).
  WorkerState mWorkerState;

  // Touched only on the owning thread (Worker Launcher).
  nsTArray<RemoteWorkerOp> mPendingOps;
};

} // dom namespace
} // mozilla namespace

#endif // mozilla_dom_RemoteWorkerChild_h