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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
Cokiee Shell
| Current Path : /proc/self/root/usr/include/CLAM/ |
| Current File : //proc/self/root/usr/include/CLAM/xtime.hxx |
/*
* Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)
* UNIVERSITAT POMPEU FABRA
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __XTIME__
#define __XTIME__
#ifdef WIN32
#include "CLAM_windows.h" // for FTIME
#undef GetClassName
#else
#include <sys/time.h> // for GetTimeOfDay
#endif
#include <pthread.h>
namespace CLAM
{
enum
{
TIME_UTC=1,
TIME_TAI,
TIME_MONOTONIC,
TIME_PROCESS,
TIME_THREAD,
TIME_LOCAL,
TIME_SYNC,
TIME_RESOLUTION
};
struct xtime
{
unsigned int sec;
unsigned int nsec;
};
inline int xtime_get( xtime* xtp, int clock_type )
{
if ( clock_type == TIME_UTC )
{
#ifdef WIN32
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
const unsigned __int64 TIMESPEC_TO_FILETIME_OFFSET = ((unsigned __int64)27111902UL << 32) + (unsigned __int64)3577643008UL;
xtp->sec = (int)((*( __int64*)&ft - TIMESPEC_TO_FILETIME_OFFSET) / 10000000);
xtp->nsec = (int)((*( __int64*)&ft - TIMESPEC_TO_FILETIME_OFFSET -
(( __int64)xtp->sec * ( __int64)10000000)) * 100);
return clock_type;
#else
struct timeval tv;
gettimeofday(&tv, 0);
xtp->sec = tv.tv_sec;
xtp->nsec = tv.tv_usec * 1000;
return clock_type;
#endif
}
return clock_type;
}
const int MILLISECONDS_PER_SECOND = 1000;
const int NANOSECONDS_PER_SECOND = 1000000000;
const int NANOSECONDS_PER_MILLISECOND = 1000000;
const int MICROSECONDS_PER_SECOND = 1000000;
const int NANOSECONDS_PER_MICROSECOND = 1000;
inline void to_time(int milliseconds, xtime& xt)
{
xtime_get(&xt, TIME_UTC);
xt.sec += (milliseconds / MILLISECONDS_PER_SECOND);
xt.nsec += ((milliseconds % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND);
if (xt.nsec > static_cast<const int>(NANOSECONDS_PER_SECOND))
{
++xt.sec;
xt.nsec -= NANOSECONDS_PER_SECOND;
}
}
inline void to_timespec(const xtime& xt, timespec& ts)
{
ts.tv_sec = static_cast<int>(xt.sec);
ts.tv_nsec = static_cast<int>(xt.nsec);
if(ts.tv_nsec > static_cast<const int>(NANOSECONDS_PER_SECOND))
{
ts.tv_sec += ts.tv_nsec / NANOSECONDS_PER_SECOND;
ts.tv_nsec %= NANOSECONDS_PER_SECOND;
}
}
inline void to_time(int milliseconds, timespec& ts)
{
xtime xt;
to_time(milliseconds, xt);
to_timespec(xt, ts);
}
inline void to_timespec_duration(const xtime& xt, timespec& ts)
{
xtime cur;
xtime_get(&cur, TIME_UTC);
if (xt.sec < cur.sec || (xt.sec == cur.sec && xt.nsec < cur.nsec))
{
ts.tv_sec = 0;
ts.tv_nsec = 0;
}
else
{
ts.tv_sec = xt.sec - cur.sec;
ts.tv_nsec = xt.nsec - cur.nsec;
if( ts.tv_nsec < 0 )
{
ts.tv_sec -= 1;
ts.tv_nsec += NANOSECONDS_PER_SECOND;
}
if(ts.tv_nsec > static_cast<const int>(NANOSECONDS_PER_SECOND))
{
ts.tv_sec += ts.tv_nsec / NANOSECONDS_PER_SECOND;
ts.tv_nsec %= NANOSECONDS_PER_SECOND;
}
}
}
} // end of namespace CLAM
#endif // XTime.hxx
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