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libavutil/tests/cpu_init.c
65 строк
2 KB
Wan-Teh Chang
avutil/tests: run the cpu_init.c test conditionally on HAVE_THREADS
11 дек 2016, 00:47
11 дек 2016, 00:47
3703f13
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/* * 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; }