| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Copyright (C) 2002 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. |
| 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, write to the Free |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 18 | 02111-1307 USA. */ |
| 19 | |
| 20 | #include <errno.h> |
| 21 | #include <semaphore.h> |
| 22 | #include <stdio.h> |
| 23 | #include <unistd.h> |
| 24 | |
| 25 | |
| 26 | static int |
| 27 | do_test (void) |
| 28 | { |
| 29 | sem_t s; |
| 30 | |
| 31 | if (sem_init (&s, 0, 1) == -1) |
| 32 | { |
| 33 | puts ("init failed"); |
| 34 | return 1; |
| 35 | } |
| 36 | |
| 37 | if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1) |
| 38 | { |
| 39 | puts ("1st wait failed"); |
| 40 | return 1; |
| 41 | } |
| 42 | |
| 43 | if (sem_post (&s) == -1) |
| 44 | { |
| 45 | puts ("1st post failed"); |
| 46 | return 1; |
| 47 | } |
| 48 | |
| 49 | if (TEMP_FAILURE_RETRY (sem_trywait (&s)) == -1) |
| 50 | { |
| 51 | puts ("1st trywait failed"); |
| 52 | return 1; |
| 53 | } |
| 54 | |
| 55 | errno = 0; |
| 56 | if (TEMP_FAILURE_RETRY (sem_trywait (&s)) != -1) |
| 57 | { |
| 58 | puts ("2nd trywait succeeded"); |
| 59 | return 1; |
| 60 | } |
| 61 | else if (errno != EAGAIN) |
| 62 | { |
| 63 | puts ("2nd trywait did not set errno to EAGAIN"); |
| 64 | return 1; |
| 65 | } |
| 66 | |
| 67 | if (sem_post (&s) == -1) |
| 68 | { |
| 69 | puts ("2nd post failed"); |
| 70 | return 1; |
| 71 | } |
| 72 | |
| 73 | if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1) |
| 74 | { |
| 75 | puts ("2nd wait failed"); |
| 76 | return 1; |
| 77 | } |
| 78 | |
| 79 | if (sem_destroy (&s) == -1) |
| 80 | { |
| 81 | puts ("destroy failed"); |
| 82 | return 1; |
| 83 | } |
| 84 | |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | #define TEST_FUNCTION do_test () |
| 89 | #include "../test-skeleton.c" |