98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
/*
|
|
Copyright (C) 2010-2016 Srivats P.
|
|
|
|
This file is part of "Ostinato"
|
|
|
|
This 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 3 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, see <http://www.gnu.org/licenses/>
|
|
*/
|
|
|
|
#ifndef _TIMESTAMP_H
|
|
#define _TIMESTAMP_H
|
|
|
|
#include "timespecops.h"
|
|
|
|
#include <QtGlobal>
|
|
|
|
#if defined(Q_OS_LINUX)
|
|
#include <sys/time.h>
|
|
#ifdef USE_NSEC_TIMESTAMP
|
|
typedef struct timespec TimeStamp;
|
|
static void inline getTimeStamp(TimeStamp *stamp)
|
|
{
|
|
clock_gettime(CLOCK_MONOTONIC, stamp);
|
|
}
|
|
|
|
// Returns time diff in nsecs between end and start
|
|
static long inline ndiffTimeStamp(const TimeStamp *start, const TimeStamp *end)
|
|
{
|
|
struct timespec diff;
|
|
timespecsub(end, start, &diff);
|
|
|
|
long nsecs = diff.tv_nsec;
|
|
if (diff.tv_sec)
|
|
nsecs += diff.tv_sec*1e9;
|
|
|
|
return nsecs;
|
|
}
|
|
#else
|
|
typedef struct timeval TimeStamp;
|
|
static void inline getTimeStamp(TimeStamp *stamp)
|
|
{
|
|
gettimeofday(stamp, NULL);
|
|
}
|
|
|
|
// Returns time diff in usecs between end and start
|
|
static long inline udiffTimeStamp(const TimeStamp *start, const TimeStamp *end)
|
|
{
|
|
struct timeval diff;
|
|
long usecs;
|
|
|
|
timersub(end, start, &diff);
|
|
|
|
usecs = diff.tv_usec;
|
|
if (diff.tv_sec)
|
|
usecs += diff.tv_sec*1e6;
|
|
|
|
return usecs;
|
|
}
|
|
#endif
|
|
|
|
#elif defined(Q_OS_WIN32)
|
|
static quint64 gTicksFreq;
|
|
typedef LARGE_INTEGER TimeStamp;
|
|
static void inline getTimeStamp(TimeStamp* stamp)
|
|
{
|
|
QueryPerformanceCounter(stamp);
|
|
}
|
|
|
|
static long inline udiffTimeStamp(const TimeStamp *start, const TimeStamp *end)
|
|
{
|
|
if (end->QuadPart >= start->QuadPart)
|
|
return (end->QuadPart - start->QuadPart)*long(1e6)/gTicksFreq;
|
|
else
|
|
{
|
|
// FIXME: incorrect! what's the max value for this counter before
|
|
// it rolls over?
|
|
return (start->QuadPart)*long(1e6)/gTicksFreq;
|
|
}
|
|
}
|
|
#else
|
|
typedef int TimeStamp;
|
|
static void inline getTimeStamp(TimeStamp*) {}
|
|
static long inline udiffTimeStamp(const TimeStamp*, const TimeStamp*) { return 0; }
|
|
#endif
|
|
|
|
#endif
|
|
|