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104 lines
3.3 KiB
C++
104 lines
3.3 KiB
C++
// Copyright (c) 2012 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/test/test_simple_task_runner.h"
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#include <utility>
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#include "base/logging.h"
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#include "base/memory/ptr_util.h"
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#include "base/threading/thread_task_runner_handle.h"
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namespace base {
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TestSimpleTaskRunner::TestSimpleTaskRunner() = default;
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TestSimpleTaskRunner::~TestSimpleTaskRunner() = default;
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bool TestSimpleTaskRunner::PostDelayedTask(const Location& from_here,
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OnceClosure task,
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TimeDelta delay) {
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AutoLock auto_lock(lock_);
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pending_tasks_.push_back(TestPendingTask(from_here, std::move(task),
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TimeTicks(), delay,
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TestPendingTask::NESTABLE));
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return true;
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}
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bool TestSimpleTaskRunner::PostNonNestableDelayedTask(const Location& from_here,
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OnceClosure task,
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TimeDelta delay) {
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AutoLock auto_lock(lock_);
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pending_tasks_.push_back(TestPendingTask(from_here, std::move(task),
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TimeTicks(), delay,
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TestPendingTask::NON_NESTABLE));
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return true;
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}
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// TODO(gab): Use SequenceToken here to differentiate between tasks running in
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// the scope of this TestSimpleTaskRunner and other task runners sharing this
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// thread. http://crbug.com/631186
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bool TestSimpleTaskRunner::RunsTasksInCurrentSequence() const {
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return thread_ref_ == PlatformThread::CurrentRef();
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}
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base::circular_deque<TestPendingTask> TestSimpleTaskRunner::TakePendingTasks() {
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AutoLock auto_lock(lock_);
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return std::move(pending_tasks_);
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}
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size_t TestSimpleTaskRunner::NumPendingTasks() const {
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AutoLock auto_lock(lock_);
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return pending_tasks_.size();
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}
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bool TestSimpleTaskRunner::HasPendingTask() const {
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AutoLock auto_lock(lock_);
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return !pending_tasks_.empty();
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}
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base::TimeDelta TestSimpleTaskRunner::NextPendingTaskDelay() const {
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AutoLock auto_lock(lock_);
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return pending_tasks_.front().GetTimeToRun() - base::TimeTicks();
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}
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base::TimeDelta TestSimpleTaskRunner::FinalPendingTaskDelay() const {
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AutoLock auto_lock(lock_);
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return pending_tasks_.back().GetTimeToRun() - base::TimeTicks();
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}
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void TestSimpleTaskRunner::ClearPendingTasks() {
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AutoLock auto_lock(lock_);
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pending_tasks_.clear();
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}
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void TestSimpleTaskRunner::RunPendingTasks() {
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DCHECK(RunsTasksInCurrentSequence());
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// Swap with a local variable to avoid re-entrancy problems.
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base::circular_deque<TestPendingTask> tasks_to_run;
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{
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AutoLock auto_lock(lock_);
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tasks_to_run.swap(pending_tasks_);
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}
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// Multiple test task runners can share the same thread for determinism in
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// unit tests. Make sure this TestSimpleTaskRunner's tasks run in its scope.
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ScopedClosureRunner undo_override;
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if (!ThreadTaskRunnerHandle::IsSet() ||
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ThreadTaskRunnerHandle::Get() != this) {
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undo_override = ThreadTaskRunnerHandle::OverrideForTesting(this);
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}
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for (auto& task : tasks_to_run)
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std::move(task.task).Run();
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}
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void TestSimpleTaskRunner::RunUntilIdle() {
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while (HasPendingTask())
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RunPendingTasks();
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}
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} // namespace base
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