dom/serviceworkers/ServiceWorkerRegistrationChild.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 "ServiceWorkerRegistrationChild.h"
   8
   9 #include "RemoteServiceWorkerRegistrationImpl.h"
  10 #include "mozilla/dom/WorkerCommon.h"
  11 #include "mozilla/dom/WorkerRef.h"
  12
  13 namespace mozilla {
  14 namespace dom {
  15
  16 using mozilla::ipc::IPCResult;
  17
  18 void ServiceWorkerRegistrationChild::ActorDestroy(ActorDestroyReason aReason) {
  19   mIPCWorkerRef = nullptr;
  20
  21   if (mOwner) {
  22     mOwner->RevokeActor(this);
  23     MOZ_DIAGNOSTIC_ASSERT(!mOwner);
  24   }
  25 }
  26
  27 IPCResult ServiceWorkerRegistrationChild::RecvUpdateState(
  28     const IPCServiceWorkerRegistrationDescriptor& aDescriptor) {
  29   if (mOwner) {
  30     mOwner->UpdateState(ServiceWorkerRegistrationDescriptor(aDescriptor));
  31   }
  32   return IPC_OK();
  33 }
  34
  35 IPCResult ServiceWorkerRegistrationChild::RecvFireUpdateFound() {
  36   if (mOwner) {
  37     mOwner->FireUpdateFound();
  38   }
  39   return IPC_OK();
  40 }
  41
  42 // static
  43 RefPtr<ServiceWorkerRegistrationChild>
  44 ServiceWorkerRegistrationChild::Create() {
  45   RefPtr actor = new ServiceWorkerRegistrationChild;
  46
  47   if (!NS_IsMainThread()) {
  48     WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
  49     MOZ_DIAGNOSTIC_ASSERT(workerPrivate);
  50
  51     RefPtr<IPCWorkerRefHelper<ServiceWorkerRegistrationChild>> helper =
  52         new IPCWorkerRefHelper<ServiceWorkerRegistrationChild>(actor);
  53
  54     actor->mIPCWorkerRef = IPCWorkerRef::Create(
  55         workerPrivate, "ServiceWorkerRegistrationChild",
  56         [helper] { helper->Actor()->MaybeStartTeardown(); });
  57
  58     if (NS_WARN_IF(!actor->mIPCWorkerRef)) {
  59       return nullptr;
  60     }
  61   }
  62
  63   return actor;
  64 }
  65
  66 ServiceWorkerRegistrationChild::ServiceWorkerRegistrationChild()
  67     : mOwner(nullptr), mTeardownStarted(false) {}
  68
  69 void ServiceWorkerRegistrationChild::SetOwner(
  70     RemoteServiceWorkerRegistrationImpl* aOwner) {
  71   MOZ_DIAGNOSTIC_ASSERT(!mOwner);
  72   MOZ_DIAGNOSTIC_ASSERT(aOwner);
  73   mOwner = aOwner;
  74 }
  75
  76 void ServiceWorkerRegistrationChild::RevokeOwner(
  77     RemoteServiceWorkerRegistrationImpl* aOwner) {
  78   MOZ_DIAGNOSTIC_ASSERT(mOwner);
  79   MOZ_DIAGNOSTIC_ASSERT(aOwner == mOwner);
  80   mOwner = nullptr;
  81 }
  82
  83 void ServiceWorkerRegistrationChild::MaybeStartTeardown() {
  84   if (mTeardownStarted) {
  85     return;
  86   }
  87   mTeardownStarted = true;
  88   Unused << SendTeardown();
  89 }
  90
  91 }  // namespace dom
  92 }  // namespace mozilla