/[pcsx2_0.9.7]/trunk/3rdparty/w32pthreads/ptw32_timespec.c
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Contents of /trunk/3rdparty/w32pthreads/ptw32_timespec.c

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Revision 31 - (show annotations) (download)
Tue Sep 7 03:24:11 2010 UTC (9 years, 11 months ago) by william
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committing r3113 initial commit again...
1 /*
2 * ptw32_timespec.c
3 *
4 * Description:
5 * This translation unit implements routines which are private to
6 * the implementation and may be used throughout it.
7 *
8 * --------------------------------------------------------------------------
9 *
10 * Pthreads-win32 - POSIX Threads Library for Win32
11 * Copyright(C) 1998 John E. Bossom
12 * Copyright(C) 1999,2005 Pthreads-win32 contributors
13 *
14 * Contact Email: rpj@callisto.canberra.edu.au
15 *
16 * The current list of contributors is contained
17 * in the file CONTRIBUTORS included with the source
18 * code distribution. The list can also be seen at the
19 * following World Wide Web location:
20 * http://sources.redhat.com/pthreads-win32/contributors.html
21 *
22 * This library is free software; you can redistribute it and/or
23 * modify it under the terms of the GNU Lesser General Public
24 * License as published by the Free Software Foundation; either
25 * version 2 of the License, or (at your option) any later version.
26 *
27 * This library is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
30 * Lesser General Public License for more details.
31 *
32 * You should have received a copy of the GNU Lesser General Public
33 * License along with this library in the file COPYING.LIB;
34 * if not, write to the Free Software Foundation, Inc.,
35 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
36 */
37
38 #include "ptw32pch.h"
39
40
41 #ifdef NEED_FTIME
42
43 /*
44 * time between jan 1, 1601 and jan 1, 1970 in units of 100 nanoseconds
45 */
46 #define PTW32_TIMESPEC_TO_FILETIME_OFFSET \
47 ( ((LONGLONG) 27111902 << 32) + (LONGLONG) 3577643008 )
48
49 INLINE void
50 ptw32_timespec_to_filetime (const struct timespec *ts, FILETIME * ft)
51 /*
52 * -------------------------------------------------------------------
53 * converts struct timespec
54 * where the time is expressed in seconds and nanoseconds from Jan 1, 1970.
55 * into FILETIME (as set by GetSystemTimeAsFileTime), where the time is
56 * expressed in 100 nanoseconds from Jan 1, 1601,
57 * -------------------------------------------------------------------
58 */
59 {
60 *(LONGLONG *) ft = ts->tv_sec * 10000000
61 + (ts->tv_nsec + 50) / 100 + PTW32_TIMESPEC_TO_FILETIME_OFFSET;
62 }
63
64 INLINE void
65 ptw32_filetime_to_timespec (const FILETIME * ft, struct timespec *ts)
66 /*
67 * -------------------------------------------------------------------
68 * converts FILETIME (as set by GetSystemTimeAsFileTime), where the time is
69 * expressed in 100 nanoseconds from Jan 1, 1601,
70 * into struct timespec
71 * where the time is expressed in seconds and nanoseconds from Jan 1, 1970.
72 * -------------------------------------------------------------------
73 */
74 {
75 ts->tv_sec =
76 (int) ((*(LONGLONG *) ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET) / 10000000);
77 ts->tv_nsec =
78 (int) ((*(LONGLONG *) ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET -
79 ((LONGLONG) ts->tv_sec * (LONGLONG) 10000000)) * 100);
80 }
81
82 #endif /* NEED_FTIME */

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