| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "components/scheduler/renderer/idle_time_estimator.h" |
| |
| #include "base/memory/ptr_util.h" |
| #include "base/test/simple_test_tick_clock.h" |
| #include "cc/test/ordered_simple_task_runner.h" |
| #include "components/scheduler/base/task_queue_manager.h" |
| #include "components/scheduler/base/test_time_source.h" |
| #include "components/scheduler/child/scheduler_tqm_delegate_for_test.h" |
| #include "testing/gmock/include/gmock/gmock.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace scheduler { |
| |
| class IdleTimeEstimatorForTest : public IdleTimeEstimator { |
| public: |
| IdleTimeEstimatorForTest( |
| const scoped_refptr<TaskQueue>& compositor_task_runner, |
| TestTimeSource* test_time_source, |
| int sample_count, |
| double estimation_percentile) |
| : IdleTimeEstimator(compositor_task_runner, |
| test_time_source, |
| sample_count, |
| estimation_percentile) {} |
| }; |
| |
| class IdleTimeEstimatorTest : public testing::Test { |
| public: |
| IdleTimeEstimatorTest() |
| : frame_length_(base::TimeDelta::FromMilliseconds(16)) {} |
| |
| ~IdleTimeEstimatorTest() override {} |
| |
| void SetUp() override { |
| clock_.reset(new base::SimpleTestTickClock()); |
| clock_->Advance(base::TimeDelta::FromMicroseconds(5000)); |
| test_time_source_.reset(new TestTimeSource(clock_.get())); |
| mock_task_runner_ = make_scoped_refptr( |
| new cc::OrderedSimpleTaskRunner(clock_.get(), false)); |
| main_task_runner_ = SchedulerTqmDelegateForTest::Create( |
| mock_task_runner_, base::WrapUnique(new TestTimeSource(clock_.get()))); |
| manager_ = base::WrapUnique( |
| new TaskQueueManager(main_task_runner_, "test.scheduler", |
| "test.scheduler", "test.scheduler.debug")); |
| compositor_task_runner_ = |
| manager_->NewTaskQueue(TaskQueue::Spec("compositor_tq")); |
| estimator_.reset(new IdleTimeEstimatorForTest( |
| compositor_task_runner_, test_time_source_.get(), 10, 50)); |
| } |
| |
| void SimulateFrameWithOneCompositorTask(int compositor_time) { |
| base::TimeDelta non_idle_time = |
| base::TimeDelta::FromMilliseconds(compositor_time); |
| base::PendingTask task(FROM_HERE, base::Closure()); |
| estimator_->WillProcessTask(task); |
| clock_->Advance(non_idle_time); |
| estimator_->DidCommitFrameToCompositor(); |
| estimator_->DidProcessTask(task); |
| if (non_idle_time < frame_length_) |
| clock_->Advance(frame_length_ - non_idle_time); |
| } |
| |
| void SimulateFrameWithTwoCompositorTasks(int compositor_time1, |
| int compositor_time2) { |
| base::TimeDelta non_idle_time1 = |
| base::TimeDelta::FromMilliseconds(compositor_time1); |
| base::TimeDelta non_idle_time2 = |
| base::TimeDelta::FromMilliseconds(compositor_time2); |
| base::PendingTask task(FROM_HERE, base::Closure()); |
| estimator_->WillProcessTask(task); |
| clock_->Advance(non_idle_time1); |
| estimator_->DidProcessTask(task); |
| |
| estimator_->WillProcessTask(task); |
| clock_->Advance(non_idle_time2); |
| estimator_->DidCommitFrameToCompositor(); |
| estimator_->DidProcessTask(task); |
| |
| base::TimeDelta idle_time = frame_length_ - non_idle_time1 - non_idle_time2; |
| clock_->Advance(idle_time); |
| } |
| |
| std::unique_ptr<base::SimpleTestTickClock> clock_; |
| std::unique_ptr<TestTimeSource> test_time_source_; |
| scoped_refptr<cc::OrderedSimpleTaskRunner> mock_task_runner_; |
| scoped_refptr<SchedulerTqmDelegate> main_task_runner_; |
| std::unique_ptr<TaskQueueManager> manager_; |
| scoped_refptr<TaskQueue> compositor_task_runner_; |
| std::unique_ptr<IdleTimeEstimatorForTest> estimator_; |
| const base::TimeDelta frame_length_; |
| }; |
| |
| TEST_F(IdleTimeEstimatorTest, InitialTimeEstimateWithNoData) { |
| EXPECT_EQ(frame_length_, estimator_->GetExpectedIdleDuration(frame_length_)); |
| } |
| |
| TEST_F(IdleTimeEstimatorTest, BasicEstimation_SteadyState) { |
| SimulateFrameWithOneCompositorTask(5); |
| SimulateFrameWithOneCompositorTask(5); |
| |
| EXPECT_EQ(base::TimeDelta::FromMilliseconds(11), |
| estimator_->GetExpectedIdleDuration(frame_length_)); |
| } |
| |
| TEST_F(IdleTimeEstimatorTest, BasicEstimation_Variable) { |
| SimulateFrameWithOneCompositorTask(5); |
| SimulateFrameWithOneCompositorTask(6); |
| SimulateFrameWithOneCompositorTask(7); |
| SimulateFrameWithOneCompositorTask(7); |
| SimulateFrameWithOneCompositorTask(7); |
| SimulateFrameWithOneCompositorTask(8); |
| |
| // We expect it to return the median. |
| EXPECT_EQ(base::TimeDelta::FromMilliseconds(9), |
| estimator_->GetExpectedIdleDuration(frame_length_)); |
| } |
| |
| TEST_F(IdleTimeEstimatorTest, NoIdleTime) { |
| SimulateFrameWithOneCompositorTask(100); |
| SimulateFrameWithOneCompositorTask(100); |
| |
| EXPECT_EQ(base::TimeDelta::FromMilliseconds(0), |
| estimator_->GetExpectedIdleDuration(frame_length_)); |
| } |
| |
| TEST_F(IdleTimeEstimatorTest, Clear) { |
| SimulateFrameWithOneCompositorTask(5); |
| SimulateFrameWithOneCompositorTask(5); |
| |
| EXPECT_EQ(base::TimeDelta::FromMilliseconds(11), |
| estimator_->GetExpectedIdleDuration(frame_length_)); |
| estimator_->Clear(); |
| |
| EXPECT_EQ(frame_length_, estimator_->GetExpectedIdleDuration(frame_length_)); |
| } |
| |
| TEST_F(IdleTimeEstimatorTest, Estimation_MultipleTasks) { |
| SimulateFrameWithTwoCompositorTasks(1, 4); |
| SimulateFrameWithTwoCompositorTasks(1, 4); |
| |
| EXPECT_EQ(base::TimeDelta::FromMilliseconds(11), |
| estimator_->GetExpectedIdleDuration(frame_length_)); |
| } |
| |
| TEST_F(IdleTimeEstimatorTest, IgnoresNestedTasks) { |
| SimulateFrameWithOneCompositorTask(5); |
| SimulateFrameWithOneCompositorTask(5); |
| |
| base::PendingTask task(FROM_HERE, base::Closure()); |
| estimator_->WillProcessTask(task); |
| SimulateFrameWithTwoCompositorTasks(4, 4); |
| SimulateFrameWithTwoCompositorTasks(4, 4); |
| SimulateFrameWithTwoCompositorTasks(4, 4); |
| SimulateFrameWithTwoCompositorTasks(4, 4); |
| estimator_->DidCommitFrameToCompositor(); |
| estimator_->DidProcessTask(task); |
| |
| EXPECT_EQ(base::TimeDelta::FromMilliseconds(11), |
| estimator_->GetExpectedIdleDuration(frame_length_)); |
| } |
| |
| |
| } // namespace scheduler |