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/*
* C11 <time.h> implementation
*
* (C) Copyright yohhoy 2012.
* Copyright 2022 Yonggang Luo
* Distributed under the Boost Software License, Version 1.0.
*
* Permission is hereby granted, free of charge, to any person or
* organization obtaining a copy of the software and accompanying
* documentation covered by this license (the "Software") to use,
* reproduce, display, distribute, execute, and transmit the Software,
* and to prepare [[derivative work]]s of the Software, and to permit
* third-parties to whom the Software is furnished to do so, all
* subject to the following:
*
* The copyright notices in the Software and this entire statement,
* including the above license grant, this restriction and the
* following disclaimer, must be included in all copies of the
* Software, in whole or in part, and all derivative works of the
* Software, unless such copies or derivative works are solely in the
* form of machine-executable object code generated by a source
* language processor.
*
* 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, TITLE AND
* NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR ANYONE
* DISTRIBUTING THE SOFTWARE BE LIABLE FOR ANY DAMAGES OR OTHER
* LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "time.h"
#ifndef KIT_HAVE_TIMESPEC_GET
# if defined(_WIN32) && !defined(__CYGWIN__)
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN 1
# endif
# include <windows.h>
int timespec_get(struct timespec *ts, int base) {
/* difference between 1970 and 1601 */
# define _TIMESPEC_IMPL_UNIX_EPOCH_IN_TICKS 116444736000000000ull
/* 1 tick is 100 nanoseconds */
# define _TIMESPEC_IMPL_TICKS_PER_SECONDS 10000000ull
if (!ts)
return 0;
if (base == TIME_UTC) {
FILETIME ft;
ULARGE_INTEGER date;
LONGLONG ticks;
GetSystemTimeAsFileTime(&ft);
date.HighPart = ft.dwHighDateTime;
date.LowPart = ft.dwLowDateTime;
ticks = (LONGLONG) (date.QuadPart -
_TIMESPEC_IMPL_UNIX_EPOCH_IN_TICKS);
ts->tv_sec = ticks / _TIMESPEC_IMPL_TICKS_PER_SECONDS;
ts->tv_nsec = (ticks % _TIMESPEC_IMPL_TICKS_PER_SECONDS) * 100;
return base;
}
return 0;
# undef _TIMESPEC_IMPL_UNIX_EPOCH_IN_TICKS
# undef _TIMESPEC_IMPL_TICKS_PER_SECONDS
}
# else
int timespec_get(struct timespec *ts, int base) {
if (!ts)
return 0;
if (base == TIME_UTC) {
clock_gettime(CLOCK_REALTIME, ts);
return base;
}
return 0;
}
# endif
#endif
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