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/**************************************************************************************************
*
* Copyright (c) 2019-2024 Axera Semiconductor Co., Ltd. All Rights Reserved.
*
* This source file is the property of Axera Semiconductor Co., Ltd. and
* may not be copied or distributed in any isomorphic form without the prior
* written consent of Axera Semiconductor Co., Ltd.
*
**************************************************************************************************/
#pragma once
#include <chrono>
namespace utilities {
class timer {
public:
using nanoseconds = std::chrono::nanoseconds;
using microseconds = std::chrono::microseconds;
using milliseconds = std::chrono::milliseconds;
using seconds = std::chrono::seconds;
using minutes = std::chrono::minutes;
using hours = std::chrono::hours;
timer() {
start();
}
void start() {
stop();
this->start_ = this->end_;
}
void stop() {
#ifdef _MSC_VER
this->end_ = std::chrono::system_clock::now();
#else
this->end_ = std::chrono::high_resolution_clock::now();
#endif
}
template<typename T>
float elapsed() {
if (this->end_ <= this->start_) {
this->stop();
}
if (std::is_same_v<T, std::chrono::nanoseconds>) {
const auto t = std::chrono::duration_cast<std::chrono::nanoseconds>(this->end_ - this->start_).count();
return static_cast<float>(t);
}
if (std::is_same_v<T, std::chrono::microseconds>) {
const auto t = std::chrono::duration_cast<std::chrono::nanoseconds>(this->end_ - this->start_).count();
return static_cast<float>(t) / 1000.f;
}
if (std::is_same_v<T, std::chrono::milliseconds>) {
const auto t = std::chrono::duration_cast<std::chrono::microseconds>(this->end_ - this->start_).count();
return static_cast<float>(t) / 1000.f;
}
if (std::is_same_v<T, std::chrono::seconds>) {
const auto t = std::chrono::duration_cast<std::chrono::milliseconds>(this->end_ - this->start_).count();
return static_cast<float>(t) / 1000.f;
}
if (std::is_same_v<T, std::chrono::minutes>) {
const auto t = std::chrono::duration_cast<std::chrono::milliseconds>(this->end_ - this->start_).count();
return static_cast<float>(t) / (60.f * 1000.f);
}
if (std::is_same_v<T, std::chrono::hours>) {
const auto t = std::chrono::duration_cast<std::chrono::seconds>(this->end_ - this->start_).count();
return static_cast<float>(t) / (60.f * 60.f);
}
return 0.f;
}
float elapsed() {
return elapsed<std::chrono::milliseconds>();
}
private:
std::chrono::system_clock::time_point start_, end_;
};
}
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