2009-02-09 21:15:56 +00:00
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/*
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* ptw32_timespec.c
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*
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* Description:
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* This translation unit implements routines which are private to
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* the implementation and may be used throughout it.
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*
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* --------------------------------------------------------------------------
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*
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* Pthreads-win32 - POSIX Threads Library for Win32
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* Copyright(C) 1998 John E. Bossom
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* Copyright(C) 1999,2005 Pthreads-win32 contributors
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*
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* Contact Email: rpj@callisto.canberra.edu.au
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*
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* The current list of contributors is contained
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* in the file CONTRIBUTORS included with the source
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* code distribution. The list can also be seen at the
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* following World Wide Web location:
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* http://sources.redhat.com/pthreads-win32/contributors.html
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library in the file COPYING.LIB;
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* if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include "pthread.h"
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#include "implement.h"
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#ifdef NEED_FTIME
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/*
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* time between jan 1, 1601 and jan 1, 1970 in units of 100 nanoseconds
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*/
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#define PTW32_TIMESPEC_TO_FILETIME_OFFSET \
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( ((LONGLONG) 27111902 << 32) + (LONGLONG) 3577643008 )
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INLINE void
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ptw32_timespec_to_filetime (const struct timespec *ts, FILETIME * ft)
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/*
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* -------------------------------------------------------------------
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* converts struct timespec
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* where the time is expressed in seconds and nanoseconds from Jan 1, 1970.
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* into FILETIME (as set by GetSystemTimeAsFileTime), where the time is
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* expressed in 100 nanoseconds from Jan 1, 1601,
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* -------------------------------------------------------------------
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*/
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{
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*(LONGLONG *) ft = ts->tv_sec * 10000000
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+ (ts->tv_nsec + 50) / 100 + PTW32_TIMESPEC_TO_FILETIME_OFFSET;
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}
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INLINE void
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ptw32_filetime_to_timespec (const FILETIME * ft, struct timespec *ts)
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/*
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* -------------------------------------------------------------------
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* converts FILETIME (as set by GetSystemTimeAsFileTime), where the time is
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* expressed in 100 nanoseconds from Jan 1, 1601,
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* into struct timespec
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* where the time is expressed in seconds and nanoseconds from Jan 1, 1970.
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* -------------------------------------------------------------------
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*/
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{
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ts->tv_sec =
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(int) ((*(LONGLONG *) ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET) / 10000000);
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ts->tv_nsec =
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(int) ((*(LONGLONG *) ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET -
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((LONGLONG) ts->tv_sec * (LONGLONG) 10000000)) * 100);
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}
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#endif /* NEED_FTIME */
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