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 (at) 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 "pthread.h" 39 #include "implement.h" 40 41 42 #if defined(NEED_FTIME) 43 44 /* 45 * time between jan 1, 1601 and jan 1, 1970 in units of 100 nanoseconds 46 */ 47 #define PTW32_TIMESPEC_TO_FILETIME_OFFSET \ 48 ( ((int64_t) 27111902 << 32) + (int64_t) 3577643008 ) 49 50 INLINE void 51 ptw32_timespec_to_filetime (const struct timespec *ts, FILETIME * ft) 52 /* 53 * ------------------------------------------------------------------- 54 * converts struct timespec 55 * where the time is expressed in seconds and nanoseconds from Jan 1, 1970. 56 * into FILETIME (as set by GetSystemTimeAsFileTime), where the time is 57 * expressed in 100 nanoseconds from Jan 1, 1601, 58 * ------------------------------------------------------------------- 59 */ 60 { 61 *(int64_t *) ft = ts->tv_sec * 10000000 62 + (ts->tv_nsec + 50) / 100 + PTW32_TIMESPEC_TO_FILETIME_OFFSET; 63 } 64 65 INLINE void 66 ptw32_filetime_to_timespec (const FILETIME * ft, struct timespec *ts) 67 /* 68 * ------------------------------------------------------------------- 69 * converts FILETIME (as set by GetSystemTimeAsFileTime), where the time is 70 * expressed in 100 nanoseconds from Jan 1, 1601, 71 * into struct timespec 72 * where the time is expressed in seconds and nanoseconds from Jan 1, 1970. 73 * ------------------------------------------------------------------- 74 */ 75 { 76 ts->tv_sec = 77 (int) ((*(int64_t *) ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET) / 10000000); 78 ts->tv_nsec = 79 (int) ((*(int64_t *) ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET - 80 ((int64_t) ts->tv_sec * (int64_t) 10000000)) * 100); 81 } 82 83 #endif /* NEED_FTIME */ 84
