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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_RemoteWorkerChild_h
#define mozilla_dom_RemoteWorkerChild_h
#include "nsCOMPtr.h"
#include "nsISupportsImpl.h"
#include "nsTArray.h"
#include "mozilla/DataMutex.h"
#include "mozilla/MozPromise.h"
#include "mozilla/RefPtr.h"
#include "mozilla/ThreadBound.h"
#include "mozilla/ThreadSafeWeakPtr.h"
#include "mozilla/dom/PRemoteWorkerChild.h"
#include "mozilla/dom/ServiceWorkerOpArgs.h"
class nsISerialEventTarget;
class nsIConsoleReportCollector;
namespace mozilla::dom {
class ErrorValue;
class FetchEventOpProxyChild;
class RemoteWorkerData;
class ServiceWorkerOp;
class UniqueMessagePortId;
class WeakWorkerRef;
class WorkerErrorReport;
class WorkerPrivate;
/**
* Background-managed "Worker Launcher"-thread-resident created via the
* RemoteWorkerManager to actually spawn the worker. Currently, the worker will
* be spawned from the main thread due to nsIPrincipal not being able to be
* created on background threads and other ownership invariants, most of which
* can be relaxed in the future.
*/
class RemoteWorkerChild final
: public SupportsThreadSafeWeakPtr<RemoteWorkerChild>,
public PRemoteWorkerChild {
friend class FetchEventOpProxyChild;
friend class PRemoteWorkerChild;
friend class ServiceWorkerOp;
public:
MOZ_DECLARE_REFCOUNTED_TYPENAME(RemoteWorkerChild)
explicit RemoteWorkerChild(const RemoteWorkerData& aData);
~RemoteWorkerChild();
nsISerialEventTarget* GetOwningEventTarget() const;
void ExecWorker(const RemoteWorkerData& aData);
void ErrorPropagationOnMainThread(const WorkerErrorReport* aReport,
bool aIsErrorEvent);
void NotifyLock(bool aCreated);
void FlushReportsOnMainThread(nsIConsoleReportCollector* aReporter);
void AddPortIdentifier(JSContext* aCx, WorkerPrivate* aWorkerPrivate,
UniqueMessagePortId& aPortIdentifier);
RefPtr<GenericNonExclusivePromise> GetTerminationPromise();
RefPtr<GenericPromise> MaybeSendSetServiceWorkerSkipWaitingFlag();
const nsTArray<uint64_t>& WindowIDs() const { return mWindowIDs; }
private:
class InitializeWorkerRunnable;
class Op;
class SharedWorkerOp;
struct WorkerPrivateAccessibleState {
~WorkerPrivateAccessibleState();
RefPtr<WorkerPrivate> mWorkerPrivate;
};
struct Pending : WorkerPrivateAccessibleState {
nsTArray<RefPtr<Op>> mPendingOps;
};
struct PendingTerminated {};
struct Running : WorkerPrivateAccessibleState {
~Running();
RefPtr<WeakWorkerRef> mWorkerRef;
};
struct Terminated {};
using State = Variant<Pending, Running, PendingTerminated, Terminated>;
DataMutex<State> mState;
class Op {
public:
NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
virtual ~Op() = default;
virtual bool MaybeStart(RemoteWorkerChild* aOwner, State& aState) = 0;
virtual void Cancel() = 0;
};
void ActorDestroy(ActorDestroyReason) override;
mozilla::ipc::IPCResult RecvExecOp(RemoteWorkerOp&& aOp);
mozilla::ipc::IPCResult RecvExecServiceWorkerOp(
ServiceWorkerOpArgs&& aArgs, ExecServiceWorkerOpResolver&& aResolve);
already_AddRefed<PFetchEventOpProxyChild> AllocPFetchEventOpProxyChild(
const ParentToChildServiceWorkerFetchEventOpArgs& aArgs);
mozilla::ipc::IPCResult RecvPFetchEventOpProxyConstructor(
PFetchEventOpProxyChild* aActor,
const ParentToChildServiceWorkerFetchEventOpArgs& aArgs) override;
nsresult ExecWorkerOnMainThread(RemoteWorkerData&& aData);
void InitializeOnWorker();
void ShutdownOnWorker();
void CreationSucceededOnAnyThread();
void CreationFailedOnAnyThread();
void CreationSucceededOrFailedOnAnyThread(bool aDidCreationSucceed);
void CloseWorkerOnMainThread(State& aState);
void ErrorPropagation(const ErrorValue& aValue);
void ErrorPropagationDispatch(nsresult aError);
void TransitionStateToPendingTerminated(State& aState);
void TransitionStateToRunning(already_AddRefed<WorkerPrivate> aWorkerPrivate,
already_AddRefed<WeakWorkerRef> aWorkerRef);
void TransitionStateToTerminated();
void TransitionStateToTerminated(State& aState);
void CancelAllPendingOps(State& aState);
void MaybeStartOp(RefPtr<Op>&& aOp);
const bool mIsServiceWorker;
const nsCOMPtr<nsISerialEventTarget> mOwningEventTarget;
// Touched on main-thread only.
nsTArray<uint64_t> mWindowIDs;
struct LauncherBoundData {
bool mIPCActive = true;
MozPromiseHolder<GenericNonExclusivePromise> mTerminationPromise;
};
ThreadBound<LauncherBoundData> mLauncherData;
};
} // namespace mozilla::dom
#endif // mozilla_dom_RemoteWorkerChild_h
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