chromium/third_party/ffmpeg/libavutil/cpu.c

/*
 * 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
 */

#include "config.h"

#if HAVE_SCHED_GETAFFINITY
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <sched.h>
#endif

#include <stddef.h>
#include <stdint.h>
#include <stdatomic.h>

#include "attributes.h"
#include "cpu.h"
#include "cpu_internal.h"
#include "opt.h"
#include "common.h"

#if HAVE_GETPROCESSAFFINITYMASK || HAVE_WINRT
#include <windows.h>
#endif
#if HAVE_SYSCTL
#if HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <sys/types.h>
#include <sys/sysctl.h>
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#endif

static atomic_int cpu_flags = …;
static atomic_int cpu_count = …;

static int get_cpu_flags(void)
{ … }

void av_force_cpu_flags(int arg){ … }

int av_get_cpu_flags(void)
{ … }

int av_parse_cpu_caps(unsigned *flags, const char *s)
{ … }

int av_cpu_count(void)
{ … }

void av_cpu_force_count(int count)
{ … }

size_t av_cpu_max_align(void)
{ … }