Jacques Lucke
c7991bcefc
This adds a simple timer that can be used for performance measurements in C++.
More sophisticated timers are possible (e.g. one that takes averages, logs the results, ...).
However, I found that this simple timer is good enough for 99% of my use cases.
To use it just write `SCOPED_TIMER("my timer name");` or more commonly `SCOPED_TIMER(__func__);`
into some scope.
Reviewers: sergey
Differential Revision: https://developer.blender.org/D7491
63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
/*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __BLI_TIMEIT_HH__
|
|
#define __BLI_TIMEIT_HH__
|
|
|
|
#include <chrono>
|
|
#include <iostream>
|
|
#include <string>
|
|
|
|
#include "BLI_sys_types.h"
|
|
|
|
namespace BLI {
|
|
namespace Timeit {
|
|
|
|
using Clock = std::chrono::steady_clock;
|
|
using TimePoint = Clock::time_point;
|
|
using Nanoseconds = std::chrono::nanoseconds;
|
|
|
|
void print_duration(Nanoseconds duration);
|
|
|
|
class ScopedTimer {
|
|
private:
|
|
std::string m_name;
|
|
TimePoint m_start;
|
|
|
|
public:
|
|
ScopedTimer(std::string name) : m_name(std::move(name))
|
|
{
|
|
m_start = Clock::now();
|
|
}
|
|
|
|
~ScopedTimer()
|
|
{
|
|
TimePoint end = Clock::now();
|
|
Nanoseconds duration = end - m_start;
|
|
|
|
std::cout << "Timer '" << m_name << "' took ";
|
|
print_duration(duration);
|
|
std::cout << '\n';
|
|
}
|
|
};
|
|
|
|
} // namespace Timeit
|
|
} // namespace BLI
|
|
|
|
#define SCOPED_TIMER(name) BLI::Timeit::ScopedTimer scoped_timer(name)
|
|
|
|
#endif /* __BLI_TIMEIT_HH__ */
|