[deb_ffmpeg.git] / ffmpeg / libavutil / timer.h

/*
 * 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
 */

/**
 * @file
 * high precision timer, useful to profile code
 */

#ifndef AVUTIL_TIMER_H
#define AVUTIL_TIMER_H

#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>

#include "config.h"

#if HAVE_MACH_MACH_TIME_H
#include <mach/mach_time.h>
#endif

#include "log.h"

#if   ARCH_ARM
#   include "arm/timer.h"
#elif ARCH_PPC
#   include "ppc/timer.h"
#elif ARCH_X86
#   include "x86/timer.h"
#endif

#if !defined(AV_READ_TIME)
#   if HAVE_GETHRTIME
#       define AV_READ_TIME gethrtime
#   elif HAVE_MACH_ABSOLUTE_TIME
#       define AV_READ_TIME mach_absolute_time
#   endif
#endif

#ifndef FF_TIMER_UNITS
#   define FF_TIMER_UNITS "UNITS"
#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" " FF_TIMER_UNITS " 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 */
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
	3	*
	4	* This file is part of FFmpeg.
	5	*
	6	* FFmpeg is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2.1 of the License, or (at your option) any later version.
	10	*
	11	* FFmpeg is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with FFmpeg; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	/**
	22	* @file
	23	* high precision timer, useful to profile code
	24	*/
	25
	26	#ifndef AVUTIL_TIMER_H
	27	#define AVUTIL_TIMER_H
	28
	29	#include <stdlib.h>
	30	#include <stdint.h>
	31	#include <inttypes.h>
	32
	33	#include "config.h"
	34
	35	#if HAVE_MACH_MACH_TIME_H
	36	#include <mach/mach_time.h>
	37	#endif
	38
	39	#include "log.h"
	40
	41	#if ARCH_ARM
	42	# include "arm/timer.h"
	43	#elif ARCH_PPC
	44	# include "ppc/timer.h"
	45	#elif ARCH_X86
	46	# include "x86/timer.h"
	47	#endif
	48
	49	#if !defined(AV_READ_TIME)
	50	# if HAVE_GETHRTIME
	51	# define AV_READ_TIME gethrtime
	52	# elif HAVE_MACH_ABSOLUTE_TIME
	53	# define AV_READ_TIME mach_absolute_time
	54	# endif
	55	#endif
	56
	57	#ifndef FF_TIMER_UNITS
	58	# define FF_TIMER_UNITS "UNITS"
	59	#endif
	60
	61	#ifdef AV_READ_TIME
	62	#define START_TIMER \
	63	uint64_t tend; \
	64	uint64_t tstart = AV_READ_TIME(); \
65
66	#define STOP_TIMER(id) \
67	tend = AV_READ_TIME(); \
68	{ \
69	static uint64_t tsum = 0; \
70	static int tcount = 0; \
71	static int tskip_count = 0; \
72	if (tcount < 2 \|\| \
73	tend - tstart < 8 * tsum / tcount \|\| \
74	tend - tstart < 2000) { \
75	tsum+= tend - tstart; \
76	tcount++; \
77	} else \
78	tskip_count++; \
79	if (((tcount + tskip_count) & (tcount + tskip_count - 1)) == 0) { \
80	av_log(NULL, AV_LOG_ERROR, \
81	"%"PRIu64" " FF_TIMER_UNITS " in %s, %d runs, %d skips\n", \
82	tsum * 10 / tcount, id, tcount, tskip_count); \
83	} \
84	}
85	#else
86	#define START_TIMER
87	#define STOP_TIMER(id) { }
88	#endif
89
90	#endif /* AVUTIL_TIMER_H */