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/*
* Copyright 2018 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef RTC_BASE_TASK_QUEUE_FOR_TEST_H_
#define RTC_BASE_TASK_QUEUE_FOR_TEST_H_
#include <memory>
#include <utility>
#include "absl/cleanup/cleanup.h"
#include "absl/functional/any_invocable.h"
#include "absl/strings/string_view.h"
#include "api/function_view.h"
#include "api/location.h"
#include "api/task_queue/task_queue_base.h"
#include "api/task_queue/task_queue_factory.h"
#include "api/units/time_delta.h"
#include "rtc_base/checks.h"
#include "rtc_base/event.h"
namespace webrtc {
inline void SendTask(TaskQueueBase* task_queue, FunctionView<void()> task) {
if (task_queue->IsCurrent()) {
task();
return;
}
Event event;
absl::Cleanup cleanup = [&event] { event.Set(); };
task_queue->PostTask([task, cleanup = std::move(cleanup)] { task(); });
RTC_CHECK(event.Wait(/*give_up_after=*/Event::kForever,
/*warn_after=*/TimeDelta::Seconds(10)));
}
class TaskQueueForTest {
public:
explicit TaskQueueForTest(
std::unique_ptr<TaskQueueBase, TaskQueueDeleter> task_queue);
explicit TaskQueueForTest(
absl::string_view name = "TestQueue",
TaskQueueFactory::Priority priority = TaskQueueFactory::Priority::NORMAL);
TaskQueueForTest(const TaskQueueForTest&) = delete;
TaskQueueForTest& operator=(const TaskQueueForTest&) = delete;
~TaskQueueForTest();
bool IsCurrent() const { return impl_->IsCurrent(); }
// Returns non-owning pointer to the task queue implementation.
TaskQueueBase* Get() { return impl_.get(); }
void PostTask(absl::AnyInvocable<void() &&> task,
const Location& location = Location::Current()) {
impl_->PostTask(std::move(task), location);
}
void PostDelayedTask(absl::AnyInvocable<void() &&> task,
TimeDelta delay,
const Location& location = Location::Current()) {
impl_->PostDelayedTask(std::move(task), delay, location);
}
void PostDelayedHighPrecisionTask(
absl::AnyInvocable<void() &&> task,
TimeDelta delay,
const Location& location = Location::Current()) {
impl_->PostDelayedHighPrecisionTask(std::move(task), delay, location);
}
// A convenience, test-only method that blocks the current thread while
// a task executes on the task queue.
void SendTask(FunctionView<void()> task) { ::webrtc::SendTask(Get(), task); }
// Wait for the completion of all tasks posted prior to the
// WaitForPreviouslyPostedTasks() call.
void WaitForPreviouslyPostedTasks() {
RTC_DCHECK(!Get()->IsCurrent());
// Post an empty task on the queue and wait for it to finish, to ensure
// that all already posted tasks on the queue get executed.
SendTask([]() {});
}
private:
std::unique_ptr<TaskQueueBase, TaskQueueDeleter> impl_;
};
} // namespace webrtc
#endif // RTC_BASE_TASK_QUEUE_FOR_TEST_H_
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