| Line | Branch | Exec | Source |
|---|---|---|---|
| 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 |
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1 | if ((ret = pthread_create(&thread1, NULL, thread_main, &cpu_flags1))) { |
| 47 | ✗ | fprintf(stderr, "pthread_create failed: %s.\n", strerror(ret)); | |
| 48 | ✗ | return 1; | |
| 49 | } | ||
| 50 |
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1 | if ((ret = pthread_create(&thread2, NULL, thread_main, &cpu_flags2))) { |
| 51 | ✗ | fprintf(stderr, "pthread_create failed: %s.\n", strerror(ret)); | |
| 52 | ✗ | return 1; | |
| 53 | } | ||
| 54 | 1 | pthread_join(thread1, NULL); | |
| 55 | 1 | pthread_join(thread2, NULL); | |
| 56 | |||
| 57 |
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1 | if (cpu_flags1 < 0) |
| 58 | ✗ | return 2; | |
| 59 |
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1 | if (cpu_flags2 < 0) |
| 60 | ✗ | return 2; | |
| 61 |
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1 | if (cpu_flags1 != cpu_flags2) |
| 62 | ✗ | return 3; | |
| 63 | |||
| 64 | 1 | return 0; | |
| 65 | } | ||
| 66 |