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/* SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once
#include <chrono>
#include <iostream>
#include <string>
#include "BLI_sys_types.h"
namespace blender::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 name_;
TimePoint start_;
public:
ScopedTimer(std::string name) : name_(std::move(name))
{
start_ = Clock::now();
}
~ScopedTimer()
{
const TimePoint end = Clock::now();
const Nanoseconds duration = end - start_;
std::cout << "Timer '" << name_ << "' took ";
print_duration(duration);
std::cout << '\n';
}
};
class ScopedTimerAveraged {
private:
std::string name_;
TimePoint start_;
int64_t &total_count_;
Nanoseconds &total_time_;
Nanoseconds &min_time_;
public:
ScopedTimerAveraged(std::string name,
int64_t &total_count,
Nanoseconds &total_time,
Nanoseconds &min_time)
: name_(std::move(name)),
total_count_(total_count),
total_time_(total_time),
min_time_(min_time)
{
start_ = Clock::now();
}
~ScopedTimerAveraged();
};
} // namespace blender::timeit
#define SCOPED_TIMER(name) blender::timeit::ScopedTimer scoped_timer(name)
/**
* Print the average and minimum runtime of the timer's scope.
* \warning This uses static variables, so it is not thread-safe.
*/
#define SCOPED_TIMER_AVERAGED(name) \
static int64_t total_count_; \
static blender::timeit::Nanoseconds total_time_; \
static blender::timeit::Nanoseconds min_time_ = blender::timeit::Nanoseconds::max(); \
blender::timeit::ScopedTimerAveraged scoped_timer(name, total_count_, total_time_, min_time_)
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