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- // Copyright (c) 2013 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 "base/task/deferred_sequenced_task_runner.h"
- #include "base/bind.h"
- #include "base/callback_helpers.h"
- #include "base/location.h"
- #include "base/memory/raw_ptr.h"
- #include "base/memory/ref_counted.h"
- #include "base/run_loop.h"
- #include "base/task/single_thread_task_runner.h"
- #include "base/test/task_environment.h"
- #include "base/threading/thread.h"
- #include "base/threading/thread_task_runner_handle.h"
- #include "testing/gmock/include/gmock/gmock.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace base {
- namespace {
- class DeferredSequencedTaskRunnerTest : public testing::Test {
- public:
- class ExecuteTaskOnDestructor : public RefCounted<ExecuteTaskOnDestructor> {
- public:
- ExecuteTaskOnDestructor(
- DeferredSequencedTaskRunnerTest* executor,
- int task_id)
- : executor_(executor),
- task_id_(task_id) {
- }
- private:
- friend class RefCounted<ExecuteTaskOnDestructor>;
- virtual ~ExecuteTaskOnDestructor() { executor_->ExecuteTask(task_id_); }
- raw_ptr<DeferredSequencedTaskRunnerTest> executor_;
- int task_id_;
- };
- void ExecuteTask(int task_id) {
- AutoLock lock(lock_);
- executed_task_ids_.push_back(task_id);
- }
- void PostExecuteTask(int task_id) {
- runner_->PostTask(FROM_HERE,
- BindOnce(&DeferredSequencedTaskRunnerTest::ExecuteTask,
- Unretained(this), task_id));
- }
- void StartRunner() {
- runner_->Start();
- }
- void DoNothing(ExecuteTaskOnDestructor* object) {
- }
- protected:
- DeferredSequencedTaskRunnerTest()
- : runner_(
- new DeferredSequencedTaskRunner(ThreadTaskRunnerHandle::Get())) {}
- test::TaskEnvironment task_environment_;
- scoped_refptr<DeferredSequencedTaskRunner> runner_;
- mutable Lock lock_;
- std::vector<int> executed_task_ids_;
- };
- TEST_F(DeferredSequencedTaskRunnerTest, Stopped) {
- PostExecuteTask(1);
- RunLoop().RunUntilIdle();
- EXPECT_THAT(executed_task_ids_, testing::ElementsAre());
- }
- TEST_F(DeferredSequencedTaskRunnerTest, Start) {
- StartRunner();
- PostExecuteTask(1);
- RunLoop().RunUntilIdle();
- EXPECT_THAT(executed_task_ids_, testing::ElementsAre(1));
- }
- TEST_F(DeferredSequencedTaskRunnerTest, StartWithMultipleElements) {
- StartRunner();
- for (int i = 1; i < 5; ++i)
- PostExecuteTask(i);
- RunLoop().RunUntilIdle();
- EXPECT_THAT(executed_task_ids_, testing::ElementsAre(1, 2, 3, 4));
- }
- TEST_F(DeferredSequencedTaskRunnerTest, DeferredStart) {
- PostExecuteTask(1);
- RunLoop().RunUntilIdle();
- EXPECT_THAT(executed_task_ids_, testing::ElementsAre());
- StartRunner();
- RunLoop().RunUntilIdle();
- EXPECT_THAT(executed_task_ids_, testing::ElementsAre(1));
- PostExecuteTask(2);
- RunLoop().RunUntilIdle();
- EXPECT_THAT(executed_task_ids_, testing::ElementsAre(1, 2));
- }
- TEST_F(DeferredSequencedTaskRunnerTest, DeferredStartWithMultipleElements) {
- for (int i = 1; i < 5; ++i)
- PostExecuteTask(i);
- RunLoop().RunUntilIdle();
- EXPECT_THAT(executed_task_ids_, testing::ElementsAre());
- StartRunner();
- for (int i = 5; i < 9; ++i)
- PostExecuteTask(i);
- RunLoop().RunUntilIdle();
- EXPECT_THAT(executed_task_ids_, testing::ElementsAre(1, 2, 3, 4, 5, 6, 7, 8));
- }
- TEST_F(DeferredSequencedTaskRunnerTest, DeferredStartWithMultipleThreads) {
- {
- Thread thread1("DeferredSequencedTaskRunnerTestThread1");
- Thread thread2("DeferredSequencedTaskRunnerTestThread2");
- thread1.Start();
- thread2.Start();
- for (int i = 0; i < 5; ++i) {
- thread1.task_runner()->PostTask(
- FROM_HERE, BindOnce(&DeferredSequencedTaskRunnerTest::PostExecuteTask,
- Unretained(this), 2 * i));
- thread2.task_runner()->PostTask(
- FROM_HERE, BindOnce(&DeferredSequencedTaskRunnerTest::PostExecuteTask,
- Unretained(this), 2 * i + 1));
- if (i == 2) {
- thread1.task_runner()->PostTask(
- FROM_HERE, BindOnce(&DeferredSequencedTaskRunnerTest::StartRunner,
- Unretained(this)));
- }
- }
- }
- RunLoop().RunUntilIdle();
- EXPECT_THAT(executed_task_ids_,
- testing::WhenSorted(testing::ElementsAre(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)));
- }
- TEST_F(DeferredSequencedTaskRunnerTest, ObjectDestructionOrder) {
- {
- Thread thread("DeferredSequencedTaskRunnerTestThread");
- thread.Start();
- runner_ = new DeferredSequencedTaskRunner(thread.task_runner());
- for (int i = 0; i < 5; ++i) {
- {
- // Use a block to ensure that no reference to |short_lived_object|
- // is kept on the main thread after it is posted to |runner_|.
- scoped_refptr<ExecuteTaskOnDestructor> short_lived_object =
- new ExecuteTaskOnDestructor(this, 2 * i);
- runner_->PostTask(
- FROM_HERE,
- BindOnce(&DeferredSequencedTaskRunnerTest::DoNothing,
- Unretained(this), RetainedRef(short_lived_object)));
- }
- // |short_lived_object| with id |2 * i| should be destroyed before the
- // task |2 * i + 1| is executed.
- PostExecuteTask(2 * i + 1);
- }
- StartRunner();
- }
- // All |short_lived_object| with id |2 * i| are destroyed before the task
- // |2 * i + 1| is executed.
- EXPECT_THAT(executed_task_ids_,
- testing::ElementsAre(0, 1, 2, 3, 4, 5, 6, 7, 8, 9));
- }
- void GetRunsTasksInCurrentSequence(bool* result,
- scoped_refptr<SequencedTaskRunner> runner,
- OnceClosure quit) {
- *result = runner->RunsTasksInCurrentSequence();
- std::move(quit).Run();
- }
- TEST_F(DeferredSequencedTaskRunnerTest, RunsTasksInCurrentSequence) {
- scoped_refptr<DeferredSequencedTaskRunner> runner =
- MakeRefCounted<DeferredSequencedTaskRunner>();
- EXPECT_TRUE(runner->RunsTasksInCurrentSequence());
- Thread thread1("DeferredSequencedTaskRunnerTestThread1");
- thread1.Start();
- bool runs_task_in_current_thread = true;
- base::RunLoop run_loop;
- thread1.task_runner()->PostTask(
- FROM_HERE,
- BindOnce(&GetRunsTasksInCurrentSequence, &runs_task_in_current_thread,
- runner, run_loop.QuitClosure()));
- run_loop.Run();
- EXPECT_FALSE(runs_task_in_current_thread);
- }
- TEST_F(DeferredSequencedTaskRunnerTest, StartWithTaskRunner) {
- scoped_refptr<DeferredSequencedTaskRunner> runner =
- MakeRefCounted<DeferredSequencedTaskRunner>();
- bool run_called = false;
- base::RunLoop run_loop;
- runner->PostTask(FROM_HERE,
- BindOnce(
- [](bool* run_called, base::OnceClosure quit_closure) {
- *run_called = true;
- std::move(quit_closure).Run();
- },
- &run_called, run_loop.QuitClosure()));
- runner->StartWithTaskRunner(ThreadTaskRunnerHandle::Get());
- run_loop.Run();
- EXPECT_TRUE(run_called);
- }
- } // namespace
- } // namespace base
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