mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
3703f13333
Suggested by Diego Biurrun and James Almer. Signed-off-by: Wan-Teh Chang <wtc@google.com> Signed-off-by: James Almer <jamrial@gmail.com>
66 lines
1.7 KiB
C
66 lines
1.7 KiB
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
|
|
*/
|
|
|
|
/*
|
|
* This test program tests whether the one-time initialization in
|
|
* av_get_cpu_flags() has data races.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/thread.h"
|
|
|
|
static void *thread_main(void *arg)
|
|
{
|
|
int *flags = arg;
|
|
|
|
*flags = av_get_cpu_flags();
|
|
return NULL;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
int cpu_flags1;
|
|
int cpu_flags2;
|
|
int ret;
|
|
pthread_t thread1;
|
|
pthread_t thread2;
|
|
|
|
if ((ret = pthread_create(&thread1, NULL, thread_main, &cpu_flags1))) {
|
|
fprintf(stderr, "pthread_create failed: %s.\n", strerror(ret));
|
|
return 1;
|
|
}
|
|
if ((ret = pthread_create(&thread2, NULL, thread_main, &cpu_flags2))) {
|
|
fprintf(stderr, "pthread_create failed: %s.\n", strerror(ret));
|
|
return 1;
|
|
}
|
|
pthread_join(thread1, NULL);
|
|
pthread_join(thread2, NULL);
|
|
|
|
if (cpu_flags1 < 0)
|
|
return 2;
|
|
if (cpu_flags2 < 0)
|
|
return 2;
|
|
if (cpu_flags1 != cpu_flags2)
|
|
return 3;
|
|
|
|
return 0;
|
|
}
|