dom/serviceworkers/ServiceWorkerUpdaterChild.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 file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "ServiceWorkerUpdaterChild.h"
   8 #include "nsThreadUtils.h"
   9
  10 namespace mozilla {
  11 namespace dom {
  12
  13 ServiceWorkerUpdaterChild::ServiceWorkerUpdaterChild(
  14     GenericPromise* aPromise, CancelableRunnable* aSuccessRunnable,
  15     CancelableRunnable* aFailureRunnable)
  16     : mSuccessRunnable(aSuccessRunnable), mFailureRunnable(aFailureRunnable) {
  17   // TODO: remove the main thread restriction after fixing bug 1364821.
  18   MOZ_ASSERT(NS_IsMainThread());
  19
  20   MOZ_DIAGNOSTIC_ASSERT(!ServiceWorkerParentInterceptEnabled());
  21
  22   MOZ_ASSERT(aPromise);
  23   MOZ_ASSERT(aSuccessRunnable);
  24   MOZ_ASSERT(aFailureRunnable);
  25
  26   aPromise
  27       ->Then(GetMainThreadSerialEventTarget(), __func__,
  28              [this]() {
  29                mPromiseHolder.Complete();
  30                Unused << Send__delete__(this);
  31              })
  32       .Track(mPromiseHolder);
  33 }
  34
  35 mozilla::ipc::IPCResult ServiceWorkerUpdaterChild::RecvProceed(
  36     const bool& aAllowed) {
  37   // If we have a callback, it will resolve the promise.
  38
  39   if (aAllowed) {
  40     mSuccessRunnable->Run();
  41     mFailureRunnable->Cancel();
  42   } else {
  43     mFailureRunnable->Run();
  44     mSuccessRunnable->Cancel();
  45   }
  46
  47   mSuccessRunnable = nullptr;
  48   mFailureRunnable = nullptr;
  49
  50   return IPC_OK();
  51 }
  52
  53 void ServiceWorkerUpdaterChild::ActorDestroy(ActorDestroyReason aWhy) {
  54   if (mSuccessRunnable) {
  55     mSuccessRunnable->Cancel();
  56   }
  57
  58   if (mFailureRunnable) {
  59     mFailureRunnable->Cancel();
  60   }
  61
  62   mPromiseHolder.DisconnectIfExists();
  63 }
  64
  65 }  // namespace dom
  66 }  // namespace mozilla