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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/child/scheduler/worker_scheduler_impl.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/message_loop/message_loop_proxy.h" | |
| 9 #include "base/trace_event/trace_event.h" | |
| 10 #include "base/trace_event/trace_event_argument.h" | |
| 11 #include "content/child/scheduler/nestable_single_thread_task_runner.h" | |
| 12 | |
| 13 namespace content { | |
| 14 | |
| 15 WorkerSchedulerImpl::WorkerSchedulerImpl( | |
| 16 scoped_refptr<NestableSingleThreadTaskRunner> main_task_runner) | |
| 17 : helper_(main_task_runner, | |
| 18 this, | |
| 19 "worker.scheduler", | |
| 20 TRACE_DISABLED_BY_DEFAULT("worker.scheduler"), | |
| 21 "WorkerSchedulerIdlePeriod", | |
| 22 SchedulerHelper::TASK_QUEUE_COUNT, | |
| 23 base::TimeDelta::FromMilliseconds(300)) { | |
| 24 initialized_ = false; | |
| 25 TRACE_EVENT_OBJECT_CREATED_WITH_ID( | |
| 26 TRACE_DISABLED_BY_DEFAULT("worker.scheduler"), "WorkerScheduler", this); | |
| 27 } | |
| 28 | |
| 29 WorkerSchedulerImpl::~WorkerSchedulerImpl() { | |
| 30 TRACE_EVENT_OBJECT_DELETED_WITH_ID( | |
| 31 TRACE_DISABLED_BY_DEFAULT("worker.scheduler"), "WorkerScheduler", this); | |
| 32 } | |
| 33 | |
| 34 void WorkerSchedulerImpl::Init() { | |
| 35 initialized_ = true; | |
| 36 helper_.EnableLongIdlePeriod(); | |
| 37 } | |
| 38 | |
| 39 scoped_refptr<base::SingleThreadTaskRunner> | |
| 40 WorkerSchedulerImpl::DefaultTaskRunner() { | |
| 41 DCHECK(initialized_); | |
| 42 return helper_.DefaultTaskRunner(); | |
| 43 } | |
| 44 | |
| 45 scoped_refptr<SingleThreadIdleTaskRunner> | |
| 46 WorkerSchedulerImpl::IdleTaskRunner() { | |
| 47 DCHECK(initialized_); | |
| 48 return helper_.IdleTaskRunner(); | |
| 49 } | |
| 50 | |
| 51 bool WorkerSchedulerImpl::CanExceedIdleDeadlineIfRequired() const { | |
| 52 DCHECK(initialized_); | |
| 53 return helper_.CanExceedIdleDeadlineIfRequired(); | |
| 54 } | |
| 55 | |
| 56 bool WorkerSchedulerImpl::ShouldYieldForHighPriorityWork() { | |
| 57 // We don't consider any work as being high priority on workers. | |
| 58 return false; | |
| 59 } | |
| 60 | |
| 61 void WorkerSchedulerImpl::AddTaskObserver( | |
| 62 base::MessageLoop::TaskObserver* task_observer) { | |
| 63 DCHECK(initialized_); | |
| 64 helper_.AddTaskObserver(task_observer); | |
| 65 } | |
| 66 | |
| 67 void WorkerSchedulerImpl::RemoveTaskObserver( | |
| 68 base::MessageLoop::TaskObserver* task_observer) { | |
| 69 DCHECK(initialized_); | |
| 70 helper_.RemoveTaskObserver(task_observer); | |
| 71 } | |
| 72 | |
| 73 void WorkerSchedulerImpl::Shutdown() { | |
| 74 DCHECK(initialized_); | |
| 75 helper_.Shutdown(); | |
| 76 } | |
| 77 | |
| 78 SchedulerHelper* WorkerSchedulerImpl::GetSchedulerHelperForTesting() { | |
| 79 return &helper_; | |
| 80 } | |
| 81 | |
| 82 void WorkerSchedulerImpl::SetWorkBatchSizeForTesting(size_t work_batch_size) { | |
| 83 helper_.SetWorkBatchSizeForTesting(work_batch_size); | |
| 84 } | |
| 85 | |
| 86 bool WorkerSchedulerImpl::CanEnterLongIdlePeriod(base::TimeTicks, | |
| 87 base::TimeDelta*) { | |
| 88 return true; | |
| 89 } | |
| 90 | |
| 91 base::TimeTicks WorkerSchedulerImpl::CurrentIdleTaskDeadlineForTesting() const { | |
| 92 base::TimeTicks deadline; | |
| 93 helper_.CurrentIdleTaskDeadlineCallback(&deadline); | |
| 94 return deadline; | |
| 95 } | |
| 96 | |
| 97 } // namespace content | |
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Chromium Code Reviews
Issue 1058873010:
Move blink scheduler implementation into a component (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master