52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
#pragma once
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#include <stdint.h>
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#include <time.h>
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#ifdef __APPLE__
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#define CLOCK_BOOTTIME CLOCK_MONOTONIC
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#endif
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static inline uint64_t nanos_since_boot() {
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struct timespec t;
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clock_gettime(CLOCK_BOOTTIME, &t);
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return t.tv_sec * 1000000000ULL + t.tv_nsec;
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}
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static inline double millis_since_boot() {
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struct timespec t;
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clock_gettime(CLOCK_BOOTTIME, &t);
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return t.tv_sec * 1000.0 + t.tv_nsec * 1e-6;
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}
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static inline double seconds_since_boot() {
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struct timespec t;
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clock_gettime(CLOCK_BOOTTIME, &t);
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return (double)t.tv_sec + t.tv_nsec * 1e-9;
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}
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static inline uint64_t nanos_since_epoch() {
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struct timespec t;
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clock_gettime(CLOCK_REALTIME, &t);
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return t.tv_sec * 1000000000ULL + t.tv_nsec;
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}
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static inline double seconds_since_epoch() {
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struct timespec t;
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clock_gettime(CLOCK_REALTIME, &t);
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return (double)t.tv_sec + t.tv_nsec * 1e-9;
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}
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// you probably should use nanos_since_boot instead
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static inline uint64_t nanos_monotonic() {
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struct timespec t;
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clock_gettime(CLOCK_MONOTONIC, &t);
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return t.tv_sec * 1000000000ULL + t.tv_nsec;
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}
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static inline uint64_t nanos_monotonic_raw() {
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struct timespec t;
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clock_gettime(CLOCK_MONOTONIC_RAW, &t);
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return t.tv_sec * 1000000000ULL + t.tv_nsec;
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}
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