tor-browser

The Tor Browser
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ServiceWorkerContainerChild.cpp (2086B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "ServiceWorkerContainerChild.h"
      8 
      9 #include "ServiceWorkerContainer.h"
     10 #include "mozilla/dom/PServiceWorkerContainerChild.h"
     11 #include "mozilla/dom/WorkerCommon.h"
     12 #include "mozilla/dom/WorkerRef.h"
     13 
     14 namespace mozilla::dom {
     15 
     16 void ServiceWorkerContainerChild::ActorDestroy(ActorDestroyReason aReason) {
     17  mIPCWorkerRef = nullptr;
     18 
     19  if (mOwner) {
     20    mOwner->RevokeActor(this);
     21    MOZ_DIAGNOSTIC_ASSERT(!mOwner);
     22  }
     23 }
     24 
     25 // static
     26 already_AddRefed<ServiceWorkerContainerChild>
     27 ServiceWorkerContainerChild::Create() {
     28  RefPtr actor = new ServiceWorkerContainerChild;
     29 
     30  if (!NS_IsMainThread()) {
     31    WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
     32    MOZ_DIAGNOSTIC_ASSERT(workerPrivate);
     33 
     34    RefPtr<IPCWorkerRefHelper<ServiceWorkerContainerChild>> helper =
     35        new IPCWorkerRefHelper<ServiceWorkerContainerChild>(actor);
     36 
     37    actor->mIPCWorkerRef = IPCWorkerRef::Create(
     38        workerPrivate, "ServiceWorkerContainerChild",
     39        [helper] { helper->Actor()->MaybeStartTeardown(); });
     40    if (NS_WARN_IF(!actor->mIPCWorkerRef)) {
     41      return nullptr;
     42    }
     43  }
     44 
     45  return actor.forget();
     46 }
     47 
     48 ServiceWorkerContainerChild::ServiceWorkerContainerChild()
     49    : mOwner(nullptr), mTeardownStarted(false) {}
     50 
     51 void ServiceWorkerContainerChild::SetOwner(ServiceWorkerContainer* aOwner) {
     52  MOZ_DIAGNOSTIC_ASSERT(!mOwner);
     53  MOZ_DIAGNOSTIC_ASSERT(aOwner);
     54  mOwner = aOwner;
     55 }
     56 
     57 void ServiceWorkerContainerChild::RevokeOwner(ServiceWorkerContainer* aOwner) {
     58  MOZ_DIAGNOSTIC_ASSERT(mOwner);
     59  MOZ_DIAGNOSTIC_ASSERT(aOwner == mOwner);
     60  mOwner = nullptr;
     61 }
     62 
     63 void ServiceWorkerContainerChild::MaybeStartTeardown() {
     64  if (mTeardownStarted) {
     65    return;
     66  }
     67  mTeardownStarted = true;
     68  Send__delete__(this);
     69 }
     70 
     71 }  // namespace mozilla::dom