mirror of
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150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/*
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* MIT License
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*
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* Copyright (c) 2020 Ozan Tezcan
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "sc_time.h"
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#if defined(_WIN32) || defined(_WIN64)
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#include <assert.h>
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#include <windows.h>
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#else
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#include <assert.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <time.h>
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#endif
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uint64_t sc_time_ms()
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{
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#if defined(_WIN32) || defined(_WIN64)
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FILETIME ft;
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ULARGE_INTEGER dateTime;
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GetSystemTimeAsFileTime(&ft);
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dateTime.LowPart = ft.dwLowDateTime;
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dateTime.HighPart = ft.dwHighDateTime;
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return (dateTime.QuadPart / 10000);
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#else
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int rc;
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struct timespec ts;
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rc = clock_gettime(CLOCK_REALTIME, &ts);
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assert(rc == 0);
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return ts.tv_sec * 1000 + (uint64_t)(ts.tv_nsec / 10e6);
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#endif
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}
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uint64_t sc_time_ns()
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{
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#if defined(_WIN32) || defined(_WIN64)
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FILETIME ft;
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ULARGE_INTEGER dateTime;
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GetSystemTimeAsFileTime(&ft);
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dateTime.LowPart = ft.dwLowDateTime;
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dateTime.HighPart = ft.dwHighDateTime;
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return (dateTime.QuadPart * 100);
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#else
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int rc;
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struct timespec ts;
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rc = clock_gettime(CLOCK_REALTIME, &ts);
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assert(rc == 0);
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return ts.tv_sec * (uint64_t)1000000000 + ts.tv_nsec;
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#endif
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}
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uint64_t sc_time_mono_ms()
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{
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#if defined(_WIN32) || defined(_WIN64)
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// System frequency does not change at run-time, cache it
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static int64_t frequency = 0;
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if (frequency == 0) {
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LARGE_INTEGER freq;
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QueryPerformanceFrequency(&freq);
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assert(freq.QuadPart != 0);
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frequency = freq.QuadPart;
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}
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LARGE_INTEGER count;
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QueryPerformanceCounter(&count);
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return (int64_t)(count.QuadPart * 1000) / frequency;
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#else
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int rc;
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struct timespec ts;
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rc = clock_gettime(CLOCK_MONOTONIC, &ts);
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assert(rc == 0);
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return (uint64_t)((uint64_t) ts.tv_sec * 1000 +
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(uint64_t) ts.tv_nsec / 1000000);
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#endif
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}
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uint64_t sc_time_mono_ns()
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{
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#if defined(_WIN32) || defined(_WIN64)
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static int64_t frequency = 0;
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if (frequency == 0) {
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LARGE_INTEGER freq;
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QueryPerformanceFrequency(&freq);
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assert(freq.QuadPart != 0);
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frequency = freq.QuadPart;
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}
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LARGE_INTEGER count;
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QueryPerformanceCounter(&count);
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return (uint64_t)(count.QuadPart * 1000000000) / frequency;
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#else
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int rc;
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struct timespec ts;
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rc = clock_gettime(CLOCK_MONOTONIC, &ts);
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assert(rc == 0);
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return ((uint64_t) ts.tv_sec * 1000000000 + (uint64_t) ts.tv_nsec);
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#endif
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}
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int sc_time_sleep(uint64_t milliseconds)
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{
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#if defined(_WIN32) || defined(_WIN64)
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Sleep(milliseconds);
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return 0;
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#else
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int rc;
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struct timespec t, rem;
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rem.tv_sec = milliseconds / 1000;
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rem.tv_nsec = (milliseconds % 1000) * 1000000;
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do {
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t = rem;
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rc = nanosleep(&t, &rem);
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} while (rc != 0 && errno != EINTR);
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return rc;
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#endif
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}
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