Index: base/task_scheduler/scheduler_single_thread_task_runner_manager_unittest.cc |
diff --git a/base/task_scheduler/scheduler_single_thread_task_runner_manager_unittest.cc b/base/task_scheduler/scheduler_single_thread_task_runner_manager_unittest.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ea9cb66a21c3371798638d93a51cb60818cee2c2 |
--- /dev/null |
+++ b/base/task_scheduler/scheduler_single_thread_task_runner_manager_unittest.cc |
@@ -0,0 +1,357 @@ |
+// Copyright 2017 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_scheduler/scheduler_single_thread_task_runner_manager.h" |
+ |
+#include "base/bind.h" |
+#include "base/memory/ptr_util.h" |
+#include "base/synchronization/lock.h" |
+#include "base/synchronization/waitable_event.h" |
+#include "base/task_scheduler/delayed_task_manager.h" |
+#include "base/task_scheduler/post_task.h" |
+#include "base/task_scheduler/scheduler_worker_pool_params.h" |
+#include "base/task_scheduler/task_tracker.h" |
+#include "base/task_scheduler/task_traits.h" |
+#include "base/test/test_timeouts.h" |
+#include "base/threading/simple_thread.h" |
+#include "base/threading/thread.h" |
+#include "testing/gtest/include/gtest/gtest.h" |
+ |
+namespace base { |
+namespace internal { |
+ |
+namespace { |
+ |
+enum WorkerPoolType : size_t { |
+ BACKGROUND_WORKER_POOL = 0, |
+ FOREGROUND_WORKER_POOL, |
+}; |
+ |
+static size_t GetThreadPoolIndexForTraits(const TaskTraits& traits) { |
+ return traits.priority() == TaskPriority::BACKGROUND ? BACKGROUND_WORKER_POOL |
+ : FOREGROUND_WORKER_POOL; |
+} |
+ |
+std::vector<SchedulerWorkerPoolParams> GetParamsVector() { |
+ using StandbyThreadPolicy = SchedulerWorkerPoolParams::StandbyThreadPolicy; |
+ |
+ std::vector<SchedulerWorkerPoolParams> params_vector; |
+ |
+ DCHECK_EQ(BACKGROUND_WORKER_POOL, params_vector.size()); |
+ params_vector.emplace_back("Background", ThreadPriority::BACKGROUND, |
+ StandbyThreadPolicy::LAZY, 1U, TimeDelta::Max()); |
+ |
+ DCHECK_EQ(FOREGROUND_WORKER_POOL, params_vector.size()); |
+ params_vector.emplace_back("Foreground", ThreadPriority::NORMAL, |
+ StandbyThreadPolicy::LAZY, 1U, TimeDelta::Max()); |
+ |
+ return params_vector; |
+} |
+ |
+class TaskSchedulerSingleThreadTaskRunnerManagerTest : public testing::Test { |
+ public: |
+ TaskSchedulerSingleThreadTaskRunnerManagerTest() |
+ : service_thread_("TaskSchedulerServiceThread") {} |
+ |
+ void SetUp() override { |
+ service_thread_.Start(); |
+ |
+ delayed_task_manager_ = |
+ MakeUnique<DelayedTaskManager>(service_thread_.task_runner()); |
+ single_thread_task_runner_manager_ = |
+ MakeUnique<SchedulerSingleThreadTaskRunnerManager>( |
+ GetParamsVector(), Bind(&GetThreadPoolIndexForTraits), |
+ &task_tracker_, delayed_task_manager_.get()); |
+ } |
+ |
+ void TearDown() override { |
+ TearDownSingleThreadTaskRunnerManager(); |
+ delayed_task_manager_.reset(); |
+ service_thread_.Stop(); |
+ } |
+ |
+ protected: |
+ virtual void TearDownSingleThreadTaskRunnerManager() { |
+ single_thread_task_runner_manager_->JoinForTesting(); |
+ single_thread_task_runner_manager_.reset(); |
+ } |
+ |
+ std::unique_ptr<SchedulerSingleThreadTaskRunnerManager> |
+ single_thread_task_runner_manager_; |
+ TaskTracker task_tracker_; |
+ |
+ private: |
+ Thread service_thread_; |
+ std::unique_ptr<DelayedTaskManager> delayed_task_manager_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(TaskSchedulerSingleThreadTaskRunnerManagerTest); |
+}; |
+ |
+void CaptureThreadRef(PlatformThreadRef* thread_ref) { |
+ ASSERT_TRUE(thread_ref); |
+ *thread_ref = PlatformThread::CurrentRef(); |
+} |
+ |
+void CaptureThreadPriority(ThreadPriority* thread_priority) { |
+ ASSERT_TRUE(thread_priority); |
+ *thread_priority = PlatformThread::GetCurrentThreadPriority(); |
+} |
+ |
+void ShouldNotRun() { |
+ ADD_FAILURE() << "Ran a task that shouldn't run."; |
+} |
+ |
+} // namespace |
+ |
+TEST_F(TaskSchedulerSingleThreadTaskRunnerManagerTest, DifferentThreadsUsed) { |
+ scoped_refptr<SingleThreadTaskRunner> task_runner_1 = |
+ single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits( |
+ TaskTraits().WithShutdownBehavior( |
+ TaskShutdownBehavior::BLOCK_SHUTDOWN)); |
+ scoped_refptr<SingleThreadTaskRunner> task_runner_2 = |
+ single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits( |
+ TaskTraits().WithShutdownBehavior( |
+ TaskShutdownBehavior::BLOCK_SHUTDOWN)); |
+ |
+ PlatformThreadRef thread_ref_1; |
+ task_runner_1->PostTask(FROM_HERE, Bind(&CaptureThreadRef, &thread_ref_1)); |
+ PlatformThreadRef thread_ref_2; |
+ task_runner_2->PostTask(FROM_HERE, Bind(&CaptureThreadRef, &thread_ref_2)); |
+ |
+ task_tracker_.Shutdown(); |
+ |
+ ASSERT_FALSE(thread_ref_1.is_null()); |
+ ASSERT_FALSE(thread_ref_2.is_null()); |
+ EXPECT_NE(thread_ref_1, thread_ref_2); |
+} |
+ |
+TEST_F(TaskSchedulerSingleThreadTaskRunnerManagerTest, PrioritySetCorrectly) { |
+ // Why are events used here instead of the task tracker? |
+ // Shutting down can cause priorities to get raised. This means we have to use |
+ // events to determine when a task is run. |
+ scoped_refptr<SingleThreadTaskRunner> task_runner_background = |
+ single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits( |
+ TaskTraits().WithPriority(TaskPriority::BACKGROUND)); |
+ scoped_refptr<SingleThreadTaskRunner> task_runner_user_visible = |
+ single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits( |
+ TaskTraits().WithPriority(TaskPriority::USER_VISIBLE)); |
+ scoped_refptr<SingleThreadTaskRunner> task_runner_user_blocking = |
+ single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits( |
+ TaskTraits() |
+ .WithPriority(TaskPriority::USER_BLOCKING) |
+ .WithShutdownBehavior(TaskShutdownBehavior::BLOCK_SHUTDOWN)); |
+ |
+ ThreadPriority thread_priority_background; |
+ task_runner_background->PostTask( |
+ FROM_HERE, Bind(&CaptureThreadPriority, &thread_priority_background)); |
+ WaitableEvent waitable_event_background( |
+ WaitableEvent::ResetPolicy::MANUAL, |
+ WaitableEvent::InitialState::NOT_SIGNALED); |
+ task_runner_background->PostTask( |
+ FROM_HERE, |
+ Bind(&WaitableEvent::Signal, Unretained(&waitable_event_background))); |
+ |
+ ThreadPriority thread_priority_user_visible; |
+ task_runner_user_visible->PostTask( |
+ FROM_HERE, Bind(&CaptureThreadPriority, &thread_priority_user_visible)); |
+ WaitableEvent waitable_event_user_visible( |
+ WaitableEvent::ResetPolicy::MANUAL, |
+ WaitableEvent::InitialState::NOT_SIGNALED); |
+ task_runner_user_visible->PostTask( |
+ FROM_HERE, |
+ Bind(&WaitableEvent::Signal, Unretained(&waitable_event_user_visible))); |
+ |
+ ThreadPriority thread_priority_user_blocking; |
+ task_runner_user_blocking->PostTask( |
+ FROM_HERE, Bind(&CaptureThreadPriority, &thread_priority_user_blocking)); |
+ WaitableEvent waitable_event_user_blocking( |
+ WaitableEvent::ResetPolicy::MANUAL, |
+ WaitableEvent::InitialState::NOT_SIGNALED); |
+ task_runner_user_blocking->PostTask( |
+ FROM_HERE, |
+ Bind(&WaitableEvent::Signal, Unretained(&waitable_event_user_blocking))); |
+ |
+ waitable_event_background.Wait(); |
+ waitable_event_user_visible.Wait(); |
+ waitable_event_user_blocking.Wait(); |
+ |
+ if (Lock::HandlesMultipleThreadPriorities()) |
+ EXPECT_EQ(ThreadPriority::BACKGROUND, thread_priority_background); |
+ else |
+ EXPECT_EQ(ThreadPriority::NORMAL, thread_priority_background); |
+ EXPECT_EQ(ThreadPriority::NORMAL, thread_priority_user_visible); |
+ EXPECT_EQ(ThreadPriority::NORMAL, thread_priority_user_blocking); |
+} |
+ |
+TEST_F(TaskSchedulerSingleThreadTaskRunnerManagerTest, PostTaskAfterShutdown) { |
+ auto task_runner = single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits(TaskTraits()); |
+ task_tracker_.Shutdown(); |
+ EXPECT_FALSE(task_runner->PostTask(FROM_HERE, Bind(&ShouldNotRun))); |
+} |
+ |
+// Verify that a Task runs shortly after its delay expires. |
+TEST_F(TaskSchedulerSingleThreadTaskRunnerManagerTest, PostDelayedTask) { |
+ TimeTicks start_time = TimeTicks::Now(); |
+ |
+ // Post a task with a short delay. |
+ WaitableEvent task_ran(WaitableEvent::ResetPolicy::MANUAL, |
+ WaitableEvent::InitialState::NOT_SIGNALED); |
+ auto task_runner = single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits(TaskTraits()); |
+ EXPECT_TRUE(task_runner->PostDelayedTask( |
+ FROM_HERE, Bind(&WaitableEvent::Signal, Unretained(&task_ran)), |
+ TestTimeouts::tiny_timeout())); |
+ |
+ // Wait until the task runs. |
+ task_ran.Wait(); |
+ |
+ // Expect the task to run after its delay expires, but not more than 250 ms |
+ // after that. |
+ const TimeDelta actual_delay = TimeTicks::Now() - start_time; |
+ EXPECT_GE(actual_delay, TestTimeouts::tiny_timeout()); |
+ EXPECT_LT(actual_delay, |
+ TimeDelta::FromMilliseconds(250) + TestTimeouts::tiny_timeout()); |
+} |
+ |
+TEST_F(TaskSchedulerSingleThreadTaskRunnerManagerTest, |
+ RunsTasksOnCurrentThread) { |
+ scoped_refptr<SingleThreadTaskRunner> task_runner_1 = |
+ single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits( |
+ TaskTraits().WithShutdownBehavior( |
+ TaskShutdownBehavior::BLOCK_SHUTDOWN)); |
+ scoped_refptr<SingleThreadTaskRunner> task_runner_2 = |
+ single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits( |
+ TaskTraits().WithShutdownBehavior( |
+ TaskShutdownBehavior::BLOCK_SHUTDOWN)); |
+ |
+ EXPECT_FALSE(task_runner_1->RunsTasksOnCurrentThread()); |
+ EXPECT_FALSE(task_runner_2->RunsTasksOnCurrentThread()); |
+ |
+ task_runner_1->PostTask( |
+ FROM_HERE, Bind( |
+ [](scoped_refptr<SingleThreadTaskRunner> task_runner_1, |
+ scoped_refptr<SingleThreadTaskRunner> task_runner_2) { |
+ EXPECT_TRUE(task_runner_1->RunsTasksOnCurrentThread()); |
+ EXPECT_FALSE(task_runner_2->RunsTasksOnCurrentThread()); |
+ }, |
+ task_runner_1, task_runner_2)); |
+ |
+ task_runner_2->PostTask( |
+ FROM_HERE, Bind( |
+ [](scoped_refptr<SingleThreadTaskRunner> task_runner_1, |
+ scoped_refptr<SingleThreadTaskRunner> task_runner_2) { |
+ EXPECT_FALSE(task_runner_1->RunsTasksOnCurrentThread()); |
+ EXPECT_TRUE(task_runner_2->RunsTasksOnCurrentThread()); |
+ }, |
+ task_runner_1, task_runner_2)); |
+ |
+ task_tracker_.Shutdown(); |
+} |
+ |
+namespace { |
+ |
+class CallJoinFromDifferentThread : public SimpleThread { |
+ public: |
+ CallJoinFromDifferentThread( |
+ SchedulerSingleThreadTaskRunnerManager* manager_to_join) |
+ : SimpleThread("SchedulerSingleThreadTaskRunnerManagerJoinThread"), |
+ manager_to_join_(manager_to_join), |
+ run_started_event_(WaitableEvent::ResetPolicy::MANUAL, |
+ WaitableEvent::InitialState::NOT_SIGNALED) {} |
+ |
+ ~CallJoinFromDifferentThread() override = default; |
+ |
+ void Run() override { |
+ run_started_event_.Signal(); |
+ manager_to_join_->JoinForTesting(); |
+ } |
+ |
+ void WaitForRunToStart() { run_started_event_.Wait(); } |
+ |
+ private: |
+ SchedulerSingleThreadTaskRunnerManager* const manager_to_join_; |
+ WaitableEvent run_started_event_; |
+ DISALLOW_COPY_AND_ASSIGN(CallJoinFromDifferentThread); |
+}; |
+ |
+class TaskSchedulerSingleThreadTaskRunnerManagerJoinTest |
+ : public TaskSchedulerSingleThreadTaskRunnerManagerTest { |
+ public: |
+ TaskSchedulerSingleThreadTaskRunnerManagerJoinTest() = default; |
+ ~TaskSchedulerSingleThreadTaskRunnerManagerJoinTest() override = default; |
+ |
+ protected: |
+ void TearDownSingleThreadTaskRunnerManager() override { |
+ // The tests themselves are responsible for calling JoinForTesting(). |
+ single_thread_task_runner_manager_.reset(); |
+ } |
+ |
+ private: |
+ DISALLOW_COPY_AND_ASSIGN(TaskSchedulerSingleThreadTaskRunnerManagerJoinTest); |
+}; |
+ |
+} // namespace |
+ |
+TEST_F(TaskSchedulerSingleThreadTaskRunnerManagerJoinTest, ConcurrentJoin) { |
+ WaitableEvent task_running(WaitableEvent::ResetPolicy::MANUAL, |
+ WaitableEvent::InitialState::NOT_SIGNALED); |
+ WaitableEvent task_blocking(WaitableEvent::ResetPolicy::MANUAL, |
+ WaitableEvent::InitialState::NOT_SIGNALED); |
+ |
+ { |
+ auto task_runner = single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits( |
+ TaskTraits().WithBaseSyncPrimitives()); |
+ EXPECT_TRUE(task_runner->PostTask( |
+ FROM_HERE, Bind(&WaitableEvent::Signal, Unretained(&task_running)))); |
+ EXPECT_TRUE(task_runner->PostTask( |
+ FROM_HERE, Bind(&WaitableEvent::Wait, Unretained(&task_blocking)))); |
+ } |
+ |
+ task_running.Wait(); |
+ CallJoinFromDifferentThread join_from_different_thread( |
+ single_thread_task_runner_manager_.get()); |
+ join_from_different_thread.Start(); |
+ join_from_different_thread.WaitForRunToStart(); |
+ task_blocking.Signal(); |
+ join_from_different_thread.Join(); |
+} |
+ |
+TEST_F(TaskSchedulerSingleThreadTaskRunnerManagerJoinTest, |
+ ConcurrentJoinExtraSkippedTask) { |
+ WaitableEvent task_running(WaitableEvent::ResetPolicy::MANUAL, |
+ WaitableEvent::InitialState::NOT_SIGNALED); |
+ WaitableEvent task_blocking(WaitableEvent::ResetPolicy::MANUAL, |
+ WaitableEvent::InitialState::NOT_SIGNALED); |
+ |
+ { |
+ auto task_runner = single_thread_task_runner_manager_ |
+ ->CreateSingleThreadTaskRunnerWithTraits( |
+ TaskTraits().WithBaseSyncPrimitives()); |
+ EXPECT_TRUE(task_runner->PostTask( |
+ FROM_HERE, Bind(&WaitableEvent::Signal, Unretained(&task_running)))); |
+ EXPECT_TRUE(task_runner->PostTask( |
+ FROM_HERE, Bind(&WaitableEvent::Wait, Unretained(&task_blocking)))); |
+ EXPECT_TRUE(task_runner->PostTask(FROM_HERE, Bind(&DoNothing))); |
+ } |
+ |
+ task_running.Wait(); |
+ CallJoinFromDifferentThread join_from_different_thread( |
+ single_thread_task_runner_manager_.get()); |
+ join_from_different_thread.Start(); |
+ join_from_different_thread.WaitForRunToStart(); |
+ task_blocking.Signal(); |
+ join_from_different_thread.Join(); |
+} |
+ |
+} // namespace internal |
+} // namespace base |