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| 1 // Copyright 2016 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 "components/scheduler/child/compositor_worker_scheduler.h" | |
| 6 | |
| 7 #include "base/message_loop/message_loop.h" | |
| 8 #include "base/threading/thread.h" | |
| 9 | |
| 10 namespace scheduler { | |
| 11 | |
| 12 // TODO(scheduler-dev): Get rid of this asap! | |
| 13 namespace { | |
| 14 class CompositorWorkerTaskRunnerWrapper : public TaskQueue { | |
| 15 public: | |
| 16 explicit CompositorWorkerTaskRunnerWrapper( | |
| 17 scoped_refptr<base::SingleThreadTaskRunner> task_runner) | |
| 18 : task_runner_(task_runner) {} | |
| 19 | |
| 20 // TaskQueue implementation: | |
| 21 void UnregisterTaskQueue() override { NOTREACHED(); } | |
| 22 | |
| 23 bool RunsTasksOnCurrentThread() const override { | |
| 24 return task_runner_->RunsTasksOnCurrentThread(); | |
| 25 } | |
| 26 | |
| 27 bool PostDelayedTask(const tracked_objects::Location& from_here, | |
| 28 const base::Closure& task, | |
| 29 base::TimeDelta delay) override { | |
| 30 return task_runner_->PostDelayedTask(from_here, task, delay); | |
| 31 } | |
| 32 | |
| 33 bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here, | |
| 34 const base::Closure& task, | |
| 35 base::TimeDelta delay) override { | |
| 36 return task_runner_->PostNonNestableDelayedTask(from_here, task, delay); | |
| 37 } | |
| 38 | |
| 39 void SetQueueEnabled(bool enabled) override { NOTREACHED(); } | |
| 40 | |
| 41 bool IsQueueEnabled() const override { | |
| 42 NOTREACHED(); | |
| 43 return true; | |
| 44 } | |
| 45 | |
| 46 bool IsEmpty() const override { | |
| 47 NOTREACHED(); | |
| 48 return false; | |
| 49 }; | |
| 50 | |
| 51 bool HasPendingImmediateWork() const override { | |
| 52 NOTREACHED(); | |
| 53 return false; | |
| 54 }; | |
| 55 | |
| 56 bool NeedsPumping() const override { | |
| 57 NOTREACHED(); | |
| 58 return false; | |
| 59 }; | |
| 60 | |
| 61 const char* GetName() const override { | |
| 62 NOTREACHED(); | |
| 63 return nullptr; | |
| 64 }; | |
| 65 | |
| 66 void SetQueuePriority(QueuePriority priority) override { NOTREACHED(); } | |
| 67 | |
| 68 QueuePriority GetQueuePriority() const override { | |
| 69 NOTREACHED(); | |
| 70 return QueuePriority::NORMAL_PRIORITY; | |
| 71 }; | |
| 72 | |
| 73 void SetPumpPolicy(PumpPolicy pump_policy) override { NOTREACHED(); } | |
| 74 | |
| 75 PumpPolicy GetPumpPolicy() const override { | |
| 76 NOTREACHED(); | |
| 77 return PumpPolicy::AUTO; | |
| 78 }; | |
| 79 | |
| 80 void PumpQueue(LazyNow*, bool may_post_dowork) override { NOTREACHED(); } | |
| 81 | |
| 82 void AddTaskObserver( | |
| 83 base::MessageLoop::TaskObserver* task_observer) override { | |
| 84 NOTREACHED(); | |
| 85 } | |
| 86 | |
| 87 void RemoveTaskObserver( | |
| 88 base::MessageLoop::TaskObserver* task_observer) override { | |
| 89 NOTREACHED(); | |
| 90 } | |
| 91 | |
| 92 void SetTimeDomain(TimeDomain* domain) override { NOTREACHED(); } | |
| 93 | |
| 94 TimeDomain* GetTimeDomain() const override { | |
| 95 NOTREACHED(); | |
| 96 return nullptr; | |
| 97 } | |
| 98 | |
| 99 void SetBlameContext(base::trace_event::BlameContext*) override { | |
| 100 NOTREACHED(); | |
| 101 } | |
| 102 | |
| 103 private: | |
| 104 ~CompositorWorkerTaskRunnerWrapper() override {} | |
| 105 | |
| 106 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | |
| 107 }; | |
| 108 } // namespace | |
| 109 | |
| 110 CompositorWorkerScheduler::CompositorWorkerScheduler(base::Thread* thread) | |
| 111 : thread_(thread) {} | |
| 112 | |
| 113 CompositorWorkerScheduler::~CompositorWorkerScheduler() {} | |
| 114 | |
| 115 void CompositorWorkerScheduler::Init() {} | |
| 116 | |
| 117 scoped_refptr<TaskQueue> CompositorWorkerScheduler::DefaultTaskRunner() { | |
| 118 // TODO(sad): Implement a more robust scheduler that can do idle tasks for GC | |
| 119 // without regressing performance of the rest of the system. | |
| 120 return make_scoped_refptr( | |
| 121 new CompositorWorkerTaskRunnerWrapper(thread_->task_runner())); | |
| 122 } | |
| 123 | |
| 124 scoped_refptr<scheduler::SingleThreadIdleTaskRunner> | |
| 125 CompositorWorkerScheduler::IdleTaskRunner() { | |
| 126 // TODO(flackr): This posts idle tasks as regular tasks. We need to create | |
| 127 // an idle task runner with the semantics we want for the compositor thread | |
| 128 // which runs them after the current frame has been drawn before the next | |
| 129 // vsync. https://crbug.com/609532 | |
| 130 return make_scoped_refptr(new SingleThreadIdleTaskRunner( | |
| 131 thread_->task_runner(), thread_->task_runner(), this, | |
| 132 "compositor.scheduler")); | |
| 133 } | |
| 134 | |
| 135 bool CompositorWorkerScheduler::CanExceedIdleDeadlineIfRequired() const { | |
| 136 return false; | |
| 137 } | |
| 138 | |
| 139 bool CompositorWorkerScheduler::ShouldYieldForHighPriorityWork() { | |
| 140 return false; | |
| 141 } | |
| 142 | |
| 143 void CompositorWorkerScheduler::AddTaskObserver( | |
| 144 base::MessageLoop::TaskObserver* task_observer) { | |
| 145 thread_->message_loop()->AddTaskObserver(task_observer); | |
| 146 } | |
| 147 | |
| 148 void CompositorWorkerScheduler::RemoveTaskObserver( | |
| 149 base::MessageLoop::TaskObserver* task_observer) { | |
| 150 thread_->message_loop()->RemoveTaskObserver(task_observer); | |
| 151 } | |
| 152 | |
| 153 void CompositorWorkerScheduler::Shutdown() {} | |
| 154 | |
| 155 void CompositorWorkerScheduler::OnIdleTaskPosted() {} | |
| 156 | |
| 157 base::TimeTicks CompositorWorkerScheduler::WillProcessIdleTask() { | |
| 158 // TODO(flackr): Return the next frame time as the deadline instead. | |
| 159 // TODO(flackr): Ensure that oilpan GC does happen on the compositor thread | |
| 160 // even though we will have no long idle periods. https://crbug.com/609531 | |
| 161 return base::TimeTicks::Now() + base::TimeDelta::FromMillisecondsD(16.7); | |
| 162 } | |
| 163 | |
| 164 void CompositorWorkerScheduler::DidProcessIdleTask() {} | |
| 165 | |
| 166 } // namespace scheduler | |
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Chromium Code Reviews
Issue 2118903002:
scheduler: Move the Blink scheduler into Blink (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master