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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_TEST_TEST_IO_THREAD_H_
#define BASE_TEST_TEST_IO_THREAD_H_
#include "base/compiler_specific.h"
#include "base/functional/callback_forward.h"
#include "base/memory/ref_counted.h"
#include "base/task/task_runner.h"
#include "base/threading/thread.h"
namespace base {
// Create and run an IO thread with a MessageLoop, and
// making the MessageLoop accessible from its client.
// It also provides some ideomatic API like PostTaskAndWait().
//
// This API is not thread-safe:
// - Start()/Stop() should only be called from the main (creation) thread.
// - PostTask()/message_loop()/task_runner() are also safe to call from the
// underlying thread itself (to post tasks from other threads: get the
// task_runner() from the main thread first, it is then safe to pass _it_
// around).
class TestIOThread {
public:
enum Mode { kAutoStart, kManualStart };
explicit TestIOThread(Mode mode);
TestIOThread(const TestIOThread&) = delete;
TestIOThread& operator=(const TestIOThread&) = delete;
// Stops the I/O thread if necessary.
~TestIOThread();
// After Stop(), Start() may be called again to start a new I/O thread.
// Stop() may be called even when the I/O thread is not started.
void Start();
void Stop();
// Post |task| to the IO thread.
void PostTask(const Location& from_here, base::OnceClosure task);
scoped_refptr<SingleThreadTaskRunner> task_runner() {
return io_thread_.task_runner();
}
private:
base::Thread io_thread_;
bool io_thread_started_;
};
} // namespace base
#endif // BASE_TEST_TEST_IO_THREAD_H_
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