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https://github.com/thepigeongenerator/tetris_clone.git
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40 lines
1.0 KiB
C
40 lines
1.0 KiB
C
#include "time.h"
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#include <stdbool.h>
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#include <time.h>
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#if __has_include(<features.h>)
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#include <features.h>
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#endif
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#if __has_include(<features.h>) && _POSIX_C_SOURCE >= 199309L
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#include <bits/time.h>
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static void gettime(struct timespec *ts) {
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clock_gettime(CLOCK_MONOTONIC, ts);
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}
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#elif defined(_WIN32)
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#include <profileapi.h>
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#include <windows.h>
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#include <winnt.h>
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static void gettime(struct timespec *ts) {
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LARGE_INTEGER cnt, frq;
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QueryPerformanceCounter(&cnt);
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QueryPerformanceFrequency(&frq);
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ts->tv_sec = (time_t)(cnt.QuadPart / frq.QuadPart);
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ts->tv_nsec = (time_t)((cnt.QuadPart % frq.QuadPart) * 1000000000 / frq.QuadPart);
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}
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#else
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#error no implementation of a monotonic clock was available
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#endif
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time_t time_pull(void) {
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struct timespec ts;
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gettime(&ts);
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return ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
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}
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int time_poll(time_t curr, time_t delta, time_t *restrict proj) {
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bool tpass = curr >= *proj;
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*proj += tpass * ((curr + delta) - *proj); // adds 0, or the difference to proj
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return tpass;
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}
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