projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0a07288b | 1 | /* C11 threads basic mutex tests. |
| d614a753 | 2 | Copyright (C) 2018-2020 Free Software Foundation, Inc. |
| 0a07288b AZ |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, see | |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| 0a07288b AZ |
18 | |
| 19 | #include <threads.h> | |
| 20 | #include <stdio.h> | |
| 21 | #include <unistd.h> | |
| 22 | ||
| 23 | #include <support/check.h> | |
| 24 | ||
| 25 | /* Shared mutex between child and parent. */ | |
| 26 | static mtx_t mutex; | |
| 27 | ||
| 28 | /* Shared counter to check possible race conditions. */ | |
| 29 | static int counter; | |
| 30 | ||
| 31 | static int | |
| 32 | child_add (void *arg) | |
| 33 | { | |
| 34 | if (mtx_lock (&mutex) != thrd_success) | |
| 35 | FAIL_EXIT1 ("mtx_lock failed"); | |
| 36 | ||
| 37 | counter++; | |
| 38 | ||
| 39 | if (mtx_unlock (&mutex) != thrd_success) | |
| 40 | FAIL_EXIT1 ("mtx_unlock failed"); | |
| 41 | ||
| 42 | thrd_exit (thrd_success); | |
| 43 | } | |
| 44 | ||
| 45 | static int | |
| 46 | do_test (void) | |
| 47 | { | |
| 48 | mtx_init (&mutex, mtx_plain); | |
| 49 | ||
| 50 | thrd_t id; | |
| 51 | if (thrd_create (&id, child_add, NULL) != thrd_success) | |
| 52 | FAIL_EXIT1 ("thrd_create failed"); | |
| 53 | ||
| 54 | if (mtx_lock (&mutex) != thrd_success) | |
| 55 | FAIL_EXIT1 ("mtx_lock failed"); | |
| 56 | ||
| 57 | counter++; | |
| 58 | ||
| 59 | if (mtx_unlock (&mutex) != thrd_success) | |
| 60 | FAIL_EXIT1 ("mtx_unlock failed"); | |
| 61 | ||
| 62 | if (thrd_join (id, NULL) != thrd_success) | |
| 63 | FAIL_EXIT1 ("thrd_join failed"); | |
| 64 | ||
| 65 | if (counter != 2) | |
| 66 | FAIL_EXIT1 ("counter (%d) != 2", counter); | |
| 67 | ||
| 68 | mtx_destroy (&mutex); | |
| 69 | ||
| 70 | return 0; | |
| 71 | } | |
| 72 | ||
| 73 | #include <support/test-driver.c> |