dom/serviceworkers/ServiceWorkerContainerChild.cpp

   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 "mozilla/dom/PServiceWorkerContainerChild.h"
   8 #include "mozilla/dom/WorkerCommon.h"
   9 #include "mozilla/dom/WorkerRef.h"
  10
  11 #include "ServiceWorkerContainer.h"
  12 #include "ServiceWorkerContainerChild.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 }
  69
  70 }  // namespace mozilla::dom