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107 lines
3.6 KiB
C++
107 lines
3.6 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/task/task_scheduler/test_task_factory.h"
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#include "base/bind.h"
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#include "base/bind_helpers.h"
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#include "base/callback.h"
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#include "base/location.h"
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#include "base/logging.h"
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#include "base/synchronization/waitable_event.h"
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#include "base/threading/sequenced_task_runner_handle.h"
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#include "base/threading/thread_task_runner_handle.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace internal {
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namespace test {
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TestTaskFactory::TestTaskFactory(scoped_refptr<TaskRunner> task_runner,
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ExecutionMode execution_mode)
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: cv_(&lock_),
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task_runner_(std::move(task_runner)),
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execution_mode_(execution_mode) {
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// Detach |thread_checker_| from the current thread. It will be attached to
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// the first thread that calls ThreadCheckerImpl::CalledOnValidThread().
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thread_checker_.DetachFromThread();
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}
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TestTaskFactory::~TestTaskFactory() {
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WaitForAllTasksToRun();
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}
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bool TestTaskFactory::PostTask(PostNestedTask post_nested_task,
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OnceClosure after_task_closure) {
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AutoLock auto_lock(lock_);
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return task_runner_->PostTask(
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FROM_HERE, BindOnce(&TestTaskFactory::RunTaskCallback, Unretained(this),
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num_posted_tasks_++, post_nested_task,
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std::move(after_task_closure)));
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}
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void TestTaskFactory::WaitForAllTasksToRun() const {
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AutoLock auto_lock(lock_);
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while (ran_tasks_.size() < num_posted_tasks_)
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cv_.Wait();
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}
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void TestTaskFactory::RunTaskCallback(size_t task_index,
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PostNestedTask post_nested_task,
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OnceClosure after_task_closure) {
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if (post_nested_task == PostNestedTask::YES)
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PostTask(PostNestedTask::NO, Closure());
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EXPECT_TRUE(task_runner_->RunsTasksInCurrentSequence());
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// Verify TaskRunnerHandles are set as expected in the task's scope.
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switch (execution_mode_) {
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case ExecutionMode::PARALLEL:
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EXPECT_FALSE(ThreadTaskRunnerHandle::IsSet());
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EXPECT_FALSE(SequencedTaskRunnerHandle::IsSet());
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break;
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case ExecutionMode::SEQUENCED:
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EXPECT_FALSE(ThreadTaskRunnerHandle::IsSet());
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EXPECT_TRUE(SequencedTaskRunnerHandle::IsSet());
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EXPECT_EQ(task_runner_, SequencedTaskRunnerHandle::Get());
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break;
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case ExecutionMode::SINGLE_THREADED:
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// SequencedTaskRunnerHandle inherits from ThreadTaskRunnerHandle so
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// both are expected to be "set" in the SINGLE_THREADED case.
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EXPECT_TRUE(ThreadTaskRunnerHandle::IsSet());
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EXPECT_TRUE(SequencedTaskRunnerHandle::IsSet());
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EXPECT_EQ(task_runner_, ThreadTaskRunnerHandle::Get());
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EXPECT_EQ(task_runner_, SequencedTaskRunnerHandle::Get());
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break;
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}
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{
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AutoLock auto_lock(lock_);
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DCHECK_LE(task_index, num_posted_tasks_);
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if ((execution_mode_ == ExecutionMode::SINGLE_THREADED ||
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execution_mode_ == ExecutionMode::SEQUENCED) &&
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task_index != ran_tasks_.size()) {
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ADD_FAILURE() << "A task didn't run in the expected order.";
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}
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if (execution_mode_ == ExecutionMode::SINGLE_THREADED)
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EXPECT_TRUE(thread_checker_.CalledOnValidThread());
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if (ran_tasks_.find(task_index) != ran_tasks_.end())
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ADD_FAILURE() << "A task ran more than once.";
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ran_tasks_.insert(task_index);
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cv_.Signal();
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}
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if (!after_task_closure.is_null())
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std::move(after_task_closure).Run();
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}
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} // namespace test
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} // namespace internal
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} // namespace base
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