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// Copyright (c) 2012-2013 The Cryptonote developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#pragma once
#include <iostream>
#include <stdint.h>
#include <boost/chrono.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() const
{
static_assert(0 < T::loop_count, "T::loop_count must be greater than 0");
return m_elapsed / 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 char* test_name)
{
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";
std::cout << " time per call: " << runner.time_per_call() << " ms/call\n" << std::endl;
}
else
{
std::cout << test_name << " - FAILED" << std::endl;
}
}
#define QUOTEME(x) #x
#define TEST_PERFORMANCE0(test_class) run_test< test_class >(QUOTEME(test_class))
#define TEST_PERFORMANCE1(test_class, a0) run_test< test_class<a0> >(QUOTEME(test_class<a0>))
#define TEST_PERFORMANCE2(test_class, a0, a1) run_test< test_class<a0, a1> >(QUOTEME(test_class) "<" QUOTEME(a0) ", " QUOTEME(a1) ">")
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