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/*
* ptw32_timespec.c
*
* Description:
* This translation unit implements routines which are private to
* the implementation and may be used throughout it.
*
* --------------------------------------------------------------------------
*
* Pthreads4w - POSIX Threads Library for Win32
* Copyright(C) 1998 John E. Bossom
* Copyright(C) 1999-2018, Pthreads4w contributors
*
* Homepage: https://sourceforge.net/projects/pthreads4w/
*
* The current list of contributors is contained
* in the file CONTRIBUTORS included with the source
* code distribution. The list can also be seen at the
* following World Wide Web location:
* https://sourceforge.net/p/pthreads4w/wiki/Contributors/
*
* This file is part of Pthreads4w.
*
* Pthreads4w is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pthreads4w is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Pthreads4w. If not, see <http://www.gnu.org/licenses/>. *
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "pthread.h"
#include "implement.h"
/*
* time between jan 1, 1601 and jan 1, 1970 in units of 100 nanoseconds
*/
#define PTW32_TIMESPEC_TO_FILETIME_OFFSET \
( ((uint64_t) 27111902UL << 32) + (uint64_t) 3577643008UL )
INLINE void
ptw32_timespec_to_filetime (const struct timespec *ts, FILETIME * ft)
/*
* -------------------------------------------------------------------
* converts struct timespec
* where the time is expressed in seconds and nanoseconds from Jan 1, 1970.
* into FILETIME (as set by GetSystemTimeAsFileTime), where the time is
* expressed in 100 nanoseconds from Jan 1, 1601,
* -------------------------------------------------------------------
*/
{
*(uint64_t *) ft = ts->tv_sec * 10000000UL
+ (ts->tv_nsec + 50) / 100 + PTW32_TIMESPEC_TO_FILETIME_OFFSET;
}
INLINE void
ptw32_filetime_to_timespec (const FILETIME * ft, struct timespec *ts)
/*
* -------------------------------------------------------------------
* converts FILETIME (as set by GetSystemTimeAsFileTime), where the time is
* expressed in 100 nanoseconds from Jan 1, 1601,
* into struct timespec
* where the time is expressed in seconds and nanoseconds from Jan 1, 1970.
* -------------------------------------------------------------------
*/
{
ts->tv_sec =
(int) ((*(uint64_t *) ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET) / 10000000UL);
ts->tv_nsec =
(int) ((*(uint64_t *) ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET -
((uint64_t) ts->tv_sec * (uint64_t) 10000000UL)) * 100);
}
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