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/* SPDX-License-Identifier: MIT */
/*
* kontime.h
*
* Copyright (c) 2026 KonAki
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef KONTIME_H
#define KONTIME_H
/*** definition ***/
typedef double kon_time;
kon_time kon_getTime(void);
void kon_sleep(kon_time seconds);
/*** implementation ***/
#ifdef KONTIME_IMPLEMENTATION
#if defined(__linux__) || defined(__unix__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
#define _POSIX_C_SOURCE 200809L
#include <time.h>
kon_time kon_getTime(void) {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return (kon_time)ts.tv_sec + (kon_time)ts.tv_nsec / 1e9;
}
void kon_sleep(kon_time seconds) {
struct timespec ts;
ts.tv_sec = (time_t)seconds;
ts.tv_nsec = (long)((seconds - ts.tv_sec) * 1e9);
nanosleep(&ts, NULL);
}
#elif defined(_WIN32)
#include <windows.h>
kon_time kon_getTime(void) {
LARGE_INTEGER freq, now;
QueryPerformanceFrequency(&freq);
QueryPerformanceCounter(&now);
return (kon_time)now.QuadPart / (kon_time)freq.QuadPart;
}
void kon_sleep(kon_time seconds) {
Sleep((DWORD)(seconds * 1000.0));
}
#else
#error "kontime.h: unsupported platform!"
#endif
#endif /* end of KONTIME_IMPLEMENTATION */
#endif
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