dom/webscheduling/WebTaskSchedulerMainThread.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:expandtab:shiftwidth=2:tabstop=2:
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #include "mozilla/TaskController.h"
   9 #include "mozilla/dom/TimeoutManager.h"
  10
  11 #include "nsContentUtils.h"
  12 #include "WebTaskSchedulerMainThread.h"
  13
  14 namespace mozilla::dom {
  15
  16 NS_IMETHODIMP WebTaskMainThreadRunnable::Run() {
  17   if (mScheduler) {
  18     RefPtr<WebTask> task = mScheduler->GetNextTask();
  19     if (task) {
  20       task->Run();
  21     }
  22   }
  23   return NS_OK;
  24 }
  25
  26 nsresult WebTaskSchedulerMainThread::SetTimeoutForDelayedTask(WebTask* aTask,
  27                                                               uint64_t aDelay) {
  28   JSContext* cx = nsContentUtils::GetCurrentJSContext();
  29   if (!cx) {
  30     return NS_ERROR_UNEXPECTED;
  31   }
  32   nsIGlobalObject* global = GetParentObject();
  33   MOZ_ASSERT(global);
  34
  35   RefPtr<DelayedWebTaskHandler> handler =
  36       new DelayedWebTaskHandler(cx, this, aTask);
  37
  38   int32_t delay = aDelay > INT32_MAX ? INT32_MAX : (int32_t)aDelay;
  39
  40   int32_t handle;
  41   return global->AsInnerWindow()->TimeoutManager().SetTimeout(
  42       handler, delay, /* aIsInterval */ false,
  43       Timeout::Reason::eDelayedWebTaskTimeout, &handle);
  44 }
  45
  46 bool WebTaskSchedulerMainThread::DispatchEventLoopRunnable() {
  47   RefPtr<WebTaskMainThreadRunnable> runnable =
  48       new WebTaskMainThreadRunnable(this);
  49
  50   MOZ_ALWAYS_SUCCEEDS(NS_DispatchToMainThreadQueue(runnable.forget(),
  51                                                    EventQueuePriority::Normal));
  52   return true;
  53 }
  54 }  // namespace mozilla::dom