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-rw-r--r--pthreads/src/ptw32_relmillisecs.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/pthreads/src/ptw32_relmillisecs.c b/pthreads/src/ptw32_relmillisecs.c
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-/*
- * ptw32_relmillisecs.c
- *
- * Description:
- * This translation unit implements miscellaneous thread functions.
- *
- * --------------------------------------------------------------------------
- *
- * 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"
-#if !defined(NEED_FTIME)
-#include <sys/timeb.h>
-#endif
-
-
-#if defined(PTW32_BUILD_INLINED)
-INLINE
-#endif /* PTW32_BUILD_INLINED */
-DWORD
-ptw32_relmillisecs (const struct timespec * abstime)
-{
- const int64_t NANOSEC_PER_MILLISEC = 1000000;
- const int64_t MILLISEC_PER_SEC = 1000;
- DWORD milliseconds;
- int64_t tmpAbsMilliseconds;
- int64_t tmpCurrMilliseconds;
-#if defined(NEED_FTIME)
- struct timespec currSysTime;
- FILETIME ft;
- SYSTEMTIME st;
-#else /* ! NEED_FTIME */
-#if ( defined(_MSC_VER) && _MSC_VER >= 1300 ) || \
- ( (defined(__MINGW64__) || defined(__MINGW32__)) && __MSVCRT_VERSION__ >= 0x0601 )
- struct __timeb64 currSysTime;
-#else
- struct _timeb currSysTime;
-#endif
-#endif /* NEED_FTIME */
-
-
- /*
- * Calculate timeout as milliseconds from current system time.
- */
-
- /*
- * subtract current system time from abstime in a way that checks
- * that abstime is never in the past, or is never equivalent to the
- * defined INFINITE value (0xFFFFFFFF).
- *
- * Assume all integers are unsigned, i.e. cannot test if less than 0.
- */
- tmpAbsMilliseconds = (int64_t)abstime->tv_sec * MILLISEC_PER_SEC;
- tmpAbsMilliseconds += ((int64_t)abstime->tv_nsec + (NANOSEC_PER_MILLISEC/2)) / NANOSEC_PER_MILLISEC;
-
- /* get current system time */
-
-#if defined(NEED_FTIME)
-
- GetSystemTime(&st);
- SystemTimeToFileTime(&st, &ft);
- /*
- * GetSystemTimeAsFileTime(&ft); would be faster,
- * but it does not exist on WinCE
- */
-
- ptw32_filetime_to_timespec(&ft, &currSysTime);
-
- tmpCurrMilliseconds = (int64_t)currSysTime.tv_sec * MILLISEC_PER_SEC;
- tmpCurrMilliseconds += ((int64_t)currSysTime.tv_nsec + (NANOSEC_PER_MILLISEC/2))
- / NANOSEC_PER_MILLISEC;
-
-#else /* ! NEED_FTIME */
-
-#if defined(_MSC_VER) && _MSC_VER >= 1400
- _ftime64_s(&currSysTime);
-#elif ( defined(_MSC_VER) && _MSC_VER >= 1300 ) || \
- ( (defined(__MINGW64__) || defined(__MINGW32__)) && __MSVCRT_VERSION__ >= 0x0601 )
- _ftime64(&currSysTime);
-#else
- _ftime(&currSysTime);
-#endif
-
- tmpCurrMilliseconds = (int64_t) currSysTime.time * MILLISEC_PER_SEC;
- tmpCurrMilliseconds += (int64_t) currSysTime.millitm;
-
-#endif /* NEED_FTIME */
-
- if (tmpAbsMilliseconds > tmpCurrMilliseconds)
- {
- milliseconds = (DWORD) (tmpAbsMilliseconds - tmpCurrMilliseconds);
- if (milliseconds == INFINITE)
- {
- /* Timeouts must be finite */
- milliseconds--;
- }
- }
- else
- {
- /* The abstime given is in the past */
- milliseconds = 0;
- }
-
- return milliseconds;
-}