//

// Benchmark.cpp

//

// $Id$

//

// This sample shows a benchmark of various mutex implementations.

//

// Copyright (c) 2012, Applied Informatics Software Engineering GmbH.

// and Contributors.

//

// SPDX-License-Identifier: BSL-1.0

//

#include "Poco/Mutex.h"

#include "Poco/Stopwatch.h"

#include <iostream>

#include <iomanip>

template<typename Mtx>

void Benchmark(Mtx& mtx, std::string const& label)

{

Poco::Stopwatch sw;

sw.start();

const int LOOP_COUNT = 1000000000;

mtx.lock();

for (int i = 0 ; i < LOOP_COUNT ; ++i)

{

mtx.unlock();

mtx.lock();

}

mtx.unlock();

sw.stop();

std::cout << label << ' ' << sw.elapsed() << " [us]" << std::endl;

}

int main(int argc, char** argv)

{

{

Poco::NullMutex mtx;

Benchmark(mtx, "NullMutex");

}

{

Poco::Mutex mtx(Poco::Mutex::MUTEX_RECURSIVE);

Benchmark(mtx, "Mutex(MUTEX_RECURSIVE)");

}

{

Poco::Mutex mtx(Poco::Mutex::MUTEX_NONRECURSIVE);

Benchmark(mtx, "Mutex(MUTEX_NONRECURSIVE)");

}

{

Poco::FastMutex mtx;

Benchmark(mtx, "FastMutex");

}

return 0;

}