mirror of
https://github.com/libretro/pcsx2.git
synced 2024-12-04 08:17:28 +00:00
133 lines
4.0 KiB
C
133 lines
4.0 KiB
C
/*
|
|
* 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;
|
|
}
|