86 lines
1.6 KiB
C
86 lines
1.6 KiB
C
/*
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SST_Time_POSIX.c
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Author: Patrick Baggett <ptbaggett@762studios.com>
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Created: 5/29/2013
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Purpose:
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libsst-os timing functions for POSIX systems
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License:
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This program is free software. It comes without any warranty, to
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the extent permitted by applicable law. You can redistribute it
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and/or modify it under the terms of the Do What The Fuck You Want
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To Public License, Version 2, as published by Sam Hocevar. See
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http://sam.zoy.org/wtfpl/COPYING for more details.
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*/
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/*
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Sadly, MacOS X does not implement clock_gettime(), so it has its own file
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*/
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#include <SST/SST_Time.h>
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#include <time.h>
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struct timespec freq;
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static clockid_t timeSource =
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#if defined(CLOCK_MONOTONIC_RAW) /* Linux >= 2.6.28 */
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CLOCK_MONOTONIC_RAW;
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#else
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CLOCK_MONOTONIC;
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#endif
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int __libsst_init_time()
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{
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struct timespec v;
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int clkOk = (clock_gettime(timeSource, &v) > 0);
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if(!clkOk)
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{
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#if defined(CLOCK_MONOTONIC_RAW)
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timeSource = CLOCK_MONOTONIC;
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clkOk = (clock_gettime(timeSource, &v) > 0);
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if(!clkOk)
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#else
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timeSource = CLOCK_REALTIME;
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#endif
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if(clock_gettime(timeSource, &v) < 0)
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return 0;
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}
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return 1;
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}
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uint64_t SST_OS_GetMicroTime()
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{
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struct timespec v;
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clock_gettime(timeSource, &v);
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return (uint64_t)((v.tv_sec * 1000000) + (v.tv_nsec / 1000));
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}
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uint64_t SST_OS_GetMilliTime() /* Not be confused with Miller Time (TM) :D */
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{
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struct timespec v;
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clock_gettime(timeSource, &v);
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return (uint64_t)((v.tv_sec * 1000) + (v.tv_nsec / 1000000));
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}
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double SST_OS_GetFloatingTime()
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{
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struct timespec v;
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clock_gettime(timeSource, &v);
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return (double)v.tv_sec + (v.tv_nsec / 1000000000.0);
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}
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