mirror of
https://github.com/FFmpeg/FFmpeg.git
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321a3c244d
It has been included since af5f434f8c
for deprecation reasons, but removing it has been forgotten after
it had served is purpose. So remove it.
For convenience, include version.h instead as LIBAVUTIL_VERSION_INT
is supposed to be used when creating AVClasses.
Reviewed-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
155 lines
6.2 KiB
C
155 lines
6.2 KiB
C
/*
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* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* high precision timer, useful to profile code
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*/
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#ifndef AVUTIL_TIMER_H
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#define AVUTIL_TIMER_H
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#include "config.h"
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#if CONFIG_LINUX_PERF
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# ifndef _GNU_SOURCE
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# define _GNU_SOURCE
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# endif
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# include <unistd.h> // read(3)
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# include <sys/ioctl.h>
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# include <asm/unistd.h>
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# include <linux/perf_event.h>
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#endif
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#include <stdlib.h>
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#include <stdint.h>
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#include <inttypes.h>
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#if CONFIG_MACOS_KPERF
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#include "macos_kperf.h"
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#elif HAVE_MACH_ABSOLUTE_TIME
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#include <mach/mach_time.h>
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#endif
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#include "common.h"
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#include "log.h"
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#if ARCH_AARCH64
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# include "aarch64/timer.h"
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#elif ARCH_ARM
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# include "arm/timer.h"
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#elif ARCH_PPC
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# include "ppc/timer.h"
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#elif ARCH_X86
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# include "x86/timer.h"
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#endif
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#if !defined(AV_READ_TIME)
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# if HAVE_GETHRTIME
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# define AV_READ_TIME gethrtime
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# elif HAVE_MACH_ABSOLUTE_TIME
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# define AV_READ_TIME mach_absolute_time
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# endif
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#endif
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#ifndef FF_TIMER_UNITS
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# define FF_TIMER_UNITS "UNITS"
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#endif
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#define TIMER_REPORT(id, tdiff) \
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{ \
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static uint64_t tsum = 0; \
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static int tcount = 0; \
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static int tskip_count = 0; \
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static int thistogram[32] = {0}; \
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thistogram[av_log2(tdiff)]++; \
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if (tcount < 2 || \
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(tdiff) < 8 * tsum / tcount || \
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(tdiff) < 2000) { \
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tsum += (tdiff); \
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tcount++; \
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} else \
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tskip_count++; \
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if (((tcount + tskip_count) & (tcount + tskip_count - 1)) == 0) { \
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int i; \
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av_log(NULL, AV_LOG_ERROR, \
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"%7" PRIu64 " " FF_TIMER_UNITS " in %s,%8d runs,%7d skips",\
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tsum * 10 / tcount, id, tcount, tskip_count); \
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for (i = 0; i < 32; i++) \
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av_log(NULL, AV_LOG_VERBOSE, " %2d", av_log2(2*thistogram[i]));\
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av_log(NULL, AV_LOG_ERROR, "\n"); \
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} \
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}
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#if CONFIG_LINUX_PERF
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#define START_TIMER \
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static int linux_perf_fd; \
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uint64_t tperf; \
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if (!linux_perf_fd) { \
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struct perf_event_attr attr = { \
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.type = PERF_TYPE_HARDWARE, \
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.size = sizeof(struct perf_event_attr), \
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.config = PERF_COUNT_HW_CPU_CYCLES, \
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.disabled = 1, \
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.exclude_kernel = 1, \
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.exclude_hv = 1, \
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}; \
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linux_perf_fd = syscall(__NR_perf_event_open, &attr, \
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0, -1, -1, 0); \
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} \
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if (linux_perf_fd == -1) { \
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av_log(NULL, AV_LOG_ERROR, "perf_event_open failed: %s\n", \
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av_err2str(AVERROR(errno))); \
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} else { \
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ioctl(linux_perf_fd, PERF_EVENT_IOC_RESET, 0); \
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ioctl(linux_perf_fd, PERF_EVENT_IOC_ENABLE, 0); \
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}
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#define STOP_TIMER(id) \
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ioctl(linux_perf_fd, PERF_EVENT_IOC_DISABLE, 0); \
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read(linux_perf_fd, &tperf, sizeof(tperf)); \
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TIMER_REPORT(id, tperf)
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#elif CONFIG_MACOS_KPERF
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#define START_TIMER \
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uint64_t tperf; \
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ff_kperf_init(); \
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tperf = ff_kperf_cycles();
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#define STOP_TIMER(id) \
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TIMER_REPORT(id, ff_kperf_cycles() - tperf);
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#elif defined(AV_READ_TIME)
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#define START_TIMER \
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uint64_t tend; \
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uint64_t tstart = AV_READ_TIME(); \
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#define STOP_TIMER(id) \
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tend = AV_READ_TIME(); \
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TIMER_REPORT(id, tend - tstart)
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#else
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#define START_TIMER
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#define STOP_TIMER(id) { }
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#endif
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#endif /* AVUTIL_TIMER_H */
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