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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* @file
* OS independent time-manipulation functions.
*
* @author Jose Fonseca <jrfonseca@tungstengraphics.com>
*/
#ifndef WIN32
#include <sys/time.h>
#else
#include <windows.h>
#include <winddi.h>
#endif
#include "util/u_time.h"
#ifdef WIN32
static LONGLONG frequency = 0;
#endif
void
util_time_get(struct util_time *t)
{
#ifndef WIN32
gettimeofday(&t->tv, NULL);
#else
EngQueryPerformanceCounter(&t->counter);
#endif
}
void
util_time_add(const struct util_time *t1,
int64_t usecs,
struct util_time *t2)
{
#ifndef WIN32
t2->tv.tv_sec = t1->tv.tv_sec + usecs / 1000000;
t2->tv.tv_usec = t1->tv.tv_usec + usecs % 1000000;
#else
if(!frequency)
EngQueryPerformanceFrequency(&frequency);
t2->counter = t1->counter + (usecs * frequency + 999999LL)/1000000LL;
#endif
}
int64_t
util_time_diff(const struct util_time *t1,
const struct util_time *t2)
{
#ifndef WIN32
return (t2->tv.tv_usec - t1->tv.tv_usec) +
(t2->tv.tv_sec - t1->tv.tv_sec)*1000000;
#else
return (t2->counter - t1->counter)*1000000LL/frequency;
#endif
}
/**
* Compare two time values.
*
* Not publicly available because it does not take in account wrap-arounds.
* Use util_time_timeout instead.
*/
static INLINE int
util_time_compare(const struct util_time *t1,
const struct util_time *t2)
{
#ifndef WIN32
if (t1->tv.tv_sec < t2->tv.tv_sec)
return -1;
else if(t1->tv.tv_sec > t2->tv.tv_sec)
return 1;
else if (t1->tv.tv_usec < t2->tv.tv_usec)
return -1;
else if(t1->tv.tv_usec > t2->tv.tv_usec)
return 1;
else
return 0;
#else
if (t1->counter < t2->counter)
return -1;
else if(t1->counter > t2->counter)
return 1;
else
return 0;
#endif
}
int
util_time_timeout(const struct util_time *start,
const struct util_time *end,
const struct util_time *curr)
{
if(util_time_compare(start, end) <= 0)
return util_time_compare(start, curr) <= 0 && util_time_compare(curr, end) < 0;
else
return util_time_compare(start, curr) <= 0 || util_time_compare(curr, end) < 0;
}
#ifdef WIN32
void util_time_usleep(unsigned usecs)
{
LONGLONG start, curr, end;
EngQueryPerformanceCounter(&start);
if(!frequency)
EngQueryPerformanceFrequency(&frequency);
end = start + (usecs * frequency + 999999LL)/1000000LL;
do {
EngQueryPerformanceCounter(&curr);
} while(start <= curr && curr < end ||
end < start && (curr < end || start <= curr));
}
#endif
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