mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
bad5537e2c
Otherwise doxygen complains about ambiguous filenames when files exist under the same name in different subdirectories. Originally committed as revision 16912 to svn://svn.ffmpeg.org/ffmpeg/trunk
105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
/**
|
|
* @file libavutil/timer.h
|
|
* high precision timer, useful to profile code
|
|
*
|
|
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVUTIL_TIMER_H
|
|
#define AVUTIL_TIMER_H
|
|
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include "config.h"
|
|
|
|
#if ARCH_X86 || ARCH_PPC || ARCH_BFIN
|
|
#define AV_READ_TIME read_time
|
|
#if ARCH_X86
|
|
static inline uint64_t read_time(void)
|
|
{
|
|
uint32_t a, d;
|
|
__asm__ volatile("rdtsc\n\t"
|
|
: "=a" (a), "=d" (d));
|
|
return ((uint64_t)d << 32) + a;
|
|
}
|
|
#elif ARCH_BFIN
|
|
static inline uint64_t read_time(void)
|
|
{
|
|
union {
|
|
struct {
|
|
unsigned lo;
|
|
unsigned hi;
|
|
} p;
|
|
unsigned long long c;
|
|
} t;
|
|
__asm__ volatile ("%0=cycles; %1=cycles2;" : "=d" (t.p.lo), "=d" (t.p.hi));
|
|
return t.c;
|
|
}
|
|
#else //FIXME check ppc64
|
|
static inline uint64_t read_time(void)
|
|
{
|
|
uint32_t tbu, tbl, temp;
|
|
|
|
/* from section 2.2.1 of the 32-bit PowerPC PEM */
|
|
__asm__ volatile(
|
|
"1:\n"
|
|
"mftbu %2\n"
|
|
"mftb %0\n"
|
|
"mftbu %1\n"
|
|
"cmpw %2,%1\n"
|
|
"bne 1b\n"
|
|
: "=r"(tbl), "=r"(tbu), "=r"(temp)
|
|
:
|
|
: "cc");
|
|
|
|
return (((uint64_t)tbu)<<32) | (uint64_t)tbl;
|
|
}
|
|
#endif
|
|
#elif HAVE_GETHRTIME
|
|
#define AV_READ_TIME gethrtime
|
|
#endif
|
|
|
|
#ifdef AV_READ_TIME
|
|
#define START_TIMER \
|
|
uint64_t tend;\
|
|
uint64_t tstart= AV_READ_TIME();\
|
|
|
|
#define STOP_TIMER(id) \
|
|
tend= AV_READ_TIME();\
|
|
{\
|
|
static uint64_t tsum=0;\
|
|
static int tcount=0;\
|
|
static int tskip_count=0;\
|
|
if(tcount<2 || tend - tstart < 8*tsum/tcount || tend - tstart < 2000){\
|
|
tsum+= tend - tstart;\
|
|
tcount++;\
|
|
}else\
|
|
tskip_count++;\
|
|
if(((tcount+tskip_count)&(tcount+tskip_count-1))==0){\
|
|
av_log(NULL, AV_LOG_ERROR, "%"PRIu64" dezicycles in %s, %d runs, %d skips\n",\
|
|
tsum*10/tcount, id, tcount, tskip_count);\
|
|
}\
|
|
}
|
|
#else
|
|
#define START_TIMER
|
|
#define STOP_TIMER(id) {}
|
|
#endif
|
|
|
|
#endif /* AVUTIL_TIMER_H */
|