chromium/third_party/ffmpeg/libavutil/slicethread.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 <stdatomic.h>
#include "cpu.h"
#include "internal.h"
#include "slicethread.h"
#include "mem.h"
#include "thread.h"
#include "avassert.h"

#define MAX_AUTO_THREADS …

#if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS

WorkerContext;

struct AVSliceThread { … };

static int run_jobs(AVSliceThread *ctx)
{ … }

static void *attribute_align_arg thread_worker(void *v)
{ … }

int avpriv_slicethread_create(AVSliceThread **pctx, void *priv,
                              void (*worker_func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads),
                              void (*main_func)(void *priv),
                              int nb_threads)
{ … }

void avpriv_slicethread_execute(AVSliceThread *ctx, int nb_jobs, int execute_main)
{ … }

void avpriv_slicethread_free(AVSliceThread **pctx)
{ … }

#else /* HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS32THREADS */

int avpriv_slicethread_create(AVSliceThread **pctx, void *priv,
                              void (*worker_func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads),
                              void (*main_func)(void *priv),
                              int nb_threads)
{
    *pctx = NULL;
    return AVERROR(ENOSYS);
}

void avpriv_slicethread_execute(AVSliceThread *ctx, int nb_jobs, int execute_main)
{
    av_assert0(0);
}

void avpriv_slicethread_free(AVSliceThread **pctx)
{
    av_assert0(!pctx || !*pctx);
}

#endif /* HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS32THREADS */