LCOV - code coverage report
Current view: top level - src/libavutil/tests - cpu_init.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 13 20 65.0 %
Date: 2017-01-22 02:20:28 Functions: 2 2 100.0 %

          Line data    Source code
       1             : /*
       2             :  * This file is part of FFmpeg.
       3             :  *
       4             :  * FFmpeg is free software; you can redistribute it and/or
       5             :  * modify it under the terms of the GNU Lesser General Public
       6             :  * License as published by the Free Software Foundation; either
       7             :  * version 2.1 of the License, or (at your option) any later version.
       8             :  *
       9             :  * FFmpeg is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12             :  * Lesser General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU Lesser General Public
      15             :  * License along with FFmpeg; if not, write to the Free Software
      16             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      17             :  */
      18             : 
      19             : /*
      20             :  * This test program tests whether the one-time initialization in
      21             :  * av_get_cpu_flags() has data races.
      22             :  */
      23             : 
      24             : #include <stdio.h>
      25             : #include <string.h>
      26             : 
      27             : #include "libavutil/cpu.h"
      28             : #include "libavutil/thread.h"
      29             : 
      30           2 : static void *thread_main(void *arg)
      31             : {
      32           2 :     int *flags = arg;
      33             : 
      34           2 :     *flags = av_get_cpu_flags();
      35           2 :     return NULL;
      36             : }
      37             : 
      38           1 : int main(void)
      39             : {
      40             :     int cpu_flags1;
      41             :     int cpu_flags2;
      42             :     int ret;
      43             :     pthread_t thread1;
      44             :     pthread_t thread2;
      45             : 
      46           1 :     if ((ret = pthread_create(&thread1, NULL, thread_main, &cpu_flags1))) {
      47           0 :         fprintf(stderr, "pthread_create failed: %s.\n", strerror(ret));
      48           0 :         return 1;
      49             :     }
      50           1 :     if ((ret = pthread_create(&thread2, NULL, thread_main, &cpu_flags2))) {
      51           0 :         fprintf(stderr, "pthread_create failed: %s.\n", strerror(ret));
      52           0 :         return 1;
      53             :     }
      54           1 :     pthread_join(thread1, NULL);
      55           1 :     pthread_join(thread2, NULL);
      56             : 
      57           1 :     if (cpu_flags1 < 0)
      58           0 :         return 2;
      59           1 :     if (cpu_flags2 < 0)
      60           0 :         return 2;
      61           1 :     if (cpu_flags1 != cpu_flags2)
      62           0 :         return 3;
      63             : 
      64           1 :     return 0;
      65             : }

Generated by: LCOV version 1.12