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