// Copyright (c) 2014-2018, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
#pragma once
#include <iostream>
#include <stdint.h>
#include <boost/chrono.hpp>
#include <boost/regex.hpp>
class performance_timer
{
public:
typedef boost::chrono::high_resolution_clock clock;
performance_timer()
{
m_base = clock::now();
}
void start()
{
m_start = clock::now();
}
int elapsed_ms()
{
clock::duration elapsed = clock::now() - m_start;
return static_cast<int>(boost::chrono::duration_cast<boost::chrono::milliseconds>(elapsed).count());
}
private:
clock::time_point m_base;
clock::time_point m_start;
};
template <typename T>
class test_runner
{
public:
test_runner()
: m_elapsed(0)
{
}
bool run()
{
T test;
if (!test.init())
return false;
performance_timer timer;
timer.start();
warm_up();
std::cout << "Warm up: " << timer.elapsed_ms() << " ms" << std::endl;
timer.start();
for (size_t i = 0; i < T::loop_count; ++i)
{
if (!test.test())
return false;
}
m_elapsed = timer.elapsed_ms();
return true;
}
int elapsed_time() const { return m_elapsed; }
int time_per_call(int scale = 1) const
{
static_assert(0 < T::loop_count, "T::loop_count must be greater than 0");
return m_elapsed * scale / T::loop_count;
}
private:
/**
* Warm up processor core, enabling turbo boost, etc.
*/
uint64_t warm_up()
{
const size_t warm_up_rounds = 1000 * 1000 * 1000;
m_warm_up = 0;
for (size_t i = 0; i < warm_up_rounds; ++i)
{
++m_warm_up;
}
return m_warm_up;
}
private:
volatile uint64_t m_warm_up; ///<! This field is intended for preclude compiler optimizations
int m_elapsed;
};
template <typename T>
void run_test(const std::string &filter, const char* test_name)
{
boost::smatch match;
if (!filter.empty() && !boost::regex_match(std::string(test_name), match, boost::regex(filter)))
return;
test_runner<T> runner;
if (runner.run())
{
std::cout << test_name << " - OK:\n";
std::cout << " loop count: " << T::loop_count << '\n';
std::cout << " elapsed: " << runner.elapsed_time() << " ms\n";
const char *unit = "ms";
int time_per_call = runner.time_per_call();
if (time_per_call < 30000) {
time_per_call = runner.time_per_call(1000);
#ifdef _WIN32
unit = "\xb5s";
#else
unit = "µs";
#endif
}
std::cout << " time per call: " << time_per_call << " " << unit << "/call\n" << std::endl;
}
else
{
std::cout << test_name << " - FAILED" << std::endl;
}
}
#define QUOTEME(x) #x
#define TEST_PERFORMANCE0(filter, test_class) run_test< test_class >(filter, QUOTEME(test_class))
#define TEST_PERFORMANCE1(filter, test_class, a0) run_test< test_class<a0> >(filter, QUOTEME(test_class<a0>))
#define TEST_PERFORMANCE2(filter, test_class, a0, a1) run_test< test_class<a0, a1> >(filter, QUOTEME(test_class) "<" QUOTEME(a0) ", " QUOTEME(a1) ">")
#define TEST_PERFORMANCE3(filter, test_class, a0, a1, a2) run_test< test_class<a0, a1, a2> >(filter, QUOTEME(test_class) "<" QUOTEME(a0) ", " QUOTEME(a1) ", " QUOTEME(a2) ">")
