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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "content/renderer/scheduler/single_thread_idle_task_runner.h" | |
| 6 | |
| 7 #include "base/location.h" | |
| 8 #include "base/trace_event/trace_event.h" | |
| 9 | |
| 10 namespace content { | |
| 11 | |
| 12 SingleThreadIdleTaskRunner::SingleThreadIdleTaskRunner( | |
| 13 scoped_refptr<base::SingleThreadTaskRunner> idle_priority_task_runner, | |
| 14 scoped_refptr<base::SingleThreadTaskRunner> after_wakeup_task_runner, | |
| 15 base::Callback<void(base::TimeTicks*)> deadline_supplier) | |
| 16 : idle_priority_task_runner_(idle_priority_task_runner), | |
| 17 after_wakeup_task_runner_(after_wakeup_task_runner), | |
| 18 deadline_supplier_(deadline_supplier) { | |
| 19 DCHECK(!idle_priority_task_runner_ || | |
| 20 idle_priority_task_runner_->RunsTasksOnCurrentThread()); | |
| 21 DCHECK(!after_wakeup_task_runner_ || | |
| 22 after_wakeup_task_runner_->RunsTasksOnCurrentThread()); | |
| 23 } | |
| 24 | |
| 25 SingleThreadIdleTaskRunner::~SingleThreadIdleTaskRunner() { | |
| 26 } | |
| 27 | |
| 28 bool SingleThreadIdleTaskRunner::RunsTasksOnCurrentThread() const { | |
| 29 return idle_priority_task_runner_->RunsTasksOnCurrentThread(); | |
| 30 } | |
| 31 | |
| 32 void SingleThreadIdleTaskRunner::PostIdleTask( | |
| 33 const tracked_objects::Location& from_here, | |
| 34 const IdleTask& idle_task) { | |
| 35 idle_priority_task_runner_->PostTask( | |
| 36 from_here, | |
| 37 base::Bind(&SingleThreadIdleTaskRunner::RunTask, this, idle_task)); | |
| 38 } | |
| 39 | |
| 40 void SingleThreadIdleTaskRunner::PostNonNestableIdleTask( | |
| 41 const tracked_objects::Location& from_here, | |
| 42 const IdleTask& idle_task) { | |
| 43 idle_priority_task_runner_->PostNonNestableTask( | |
| 44 from_here, | |
| 45 base::Bind(&SingleThreadIdleTaskRunner::RunTask, this, idle_task)); | |
| 46 } | |
| 47 | |
| 48 void SingleThreadIdleTaskRunner::PostIdleTaskAfterWakeup( | |
| 49 const tracked_objects::Location& from_here, | |
| 50 const IdleTask& idle_task) { | |
| 51 after_wakeup_task_runner_->PostTask( | |
| 52 FROM_HERE, base::Bind(&SingleThreadIdleTaskRunner::PostIdleTask, this, | |
| 53 from_here, idle_task)); | |
| 54 } | |
| 55 | |
| 56 void SingleThreadIdleTaskRunner::RunTask(IdleTask idle_task) { | |
| 57 base::TimeTicks deadline; | |
| 58 deadline_supplier_.Run(&deadline); | |
| 59 TRACE_EVENT1("renderer.scheduler", | |
| 60 "SingleThreadIdleTaskRunner::RunTask", "allotted_time_ms", | |
| 61 (deadline - base::TimeTicks::Now()).InMillisecondsF()); | |
| 62 idle_task.Run(deadline); | |
| 63 bool is_tracing; | |
| 64 TRACE_EVENT_CATEGORY_GROUP_ENABLED("renderer.scheduler", &is_tracing); | |
| 65 if (is_tracing && base::TimeTicks::Now() > deadline) { | |
| 66 TRACE_EVENT_INSTANT0("renderer.scheduler", | |
| 67 "SingleThreadIdleTaskRunner::DidOverrunDeadline", | |
| 68 TRACE_EVENT_SCOPE_THREAD); | |
| 69 } | |
| 70 } | |
| 71 | |
| 72 } // namespace content | |
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Chromium Code Reviews
Issue 1025323003:
Introduce a SchedulerHelper in content/child/scheduler (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master