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ptw32_timespec.c    84 lines (76 with data), 3.2 kB

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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.
*
* --------------------------------------------------------------------------
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright(C) 1998 John E. Bossom
* Copyright(C) 1999,2005 Pthreads-win32 contributors
*
* Contact Email: rpj@callisto.canberra.edu.au
*
* 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:
* http://sources.redhat.com/pthreads-win32/contributors.html
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library in the file COPYING.LIB;
* if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include "pthread.h"
#include "implement.h"
#ifdef NEED_FTIME
/*
* time between jan 1, 1601 and jan 1, 1970 in units of 100 nanoseconds
*/
#define PTW32_TIMESPEC_TO_FILETIME_OFFSET \
( ((LONGLONG) 27111902 << 32) + (LONGLONG) 3577643008 )
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,
* -------------------------------------------------------------------
*/
{
*(LONGLONG *) ft = ts->tv_sec * 10000000
+ (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) ((*(LONGLONG *) ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET) / 10000000);
ts->tv_nsec =
(int) ((*(LONGLONG *) ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET -
((LONGLONG) ts->tv_sec * (LONGLONG) 10000000)) * 100);
}
#endif /* NEED_FTIME */