libcamera/test/timer-thread.cpp

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * timer-thread.cpp - Threaded timer test
 */

#include <chrono>
#include <iostream>

#include <libcamera/base/event_dispatcher.h>
#include <libcamera/base/object.h>
#include <libcamera/base/thread.h>
#include <libcamera/base/timer.h>

#include "test.h"

using namespace libcamera;
using namespace std;
using namespace std::chrono_literals;

class TimeoutHandler : public Object
{
public:
	TimeoutHandler()
		: timer_(this), timeout_(false)
	{
		timer_.timeout.connect(this, &TimeoutHandler::timeoutHandler);
		timer_.start(100ms);
	}

	bool timeout() const
	{
		return timeout_;
	}

private:
	void timeoutHandler()
	{
		timeout_ = true;
	}

	Timer timer_;
	bool timeout_;
};

class TimerThreadTest : public Test
{
protected:
	int init()
	{
		thread_.start();

		timeout_ = new TimeoutHandler();
		timeout_->moveToThread(&thread_);

		return TestPass;
	}

	int run()
	{
		/*
		 * Test that the timer expires and emits the timeout signal in
		 * the thread it belongs to.
		 */
		this_thread::sleep_for(chrono::milliseconds(200));

		if (!timeout_->timeout()) {
			cout << "Timer expiration test failed" << endl;
			return TestFail;
		}

		return TestPass;
	}

	void cleanup()
	{
		/*
		 * Object class instances must be destroyed from the thread
		 * they live in.
		 */
		timeout_->deleteLater();
		thread_.exit(0);
		thread_.wait();
	}

private:
	TimeoutHandler *timeout_;
	Thread thread_;
};

TEST_REGISTER(TimerThreadTest)