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2b778ceb | 1 | /* Copyright (C) 2002-2021 Free Software Foundation, Inc. |
76a50749 | 2 | This file is part of the GNU C Library. |
76a50749 UD |
3 | |
4 | The GNU C Library 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 | The GNU C Library 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 | |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
76a50749 UD |
17 | |
18 | #include <errno.h> | |
19 | #include <semaphore.h> | |
20 | #include <stdio.h> | |
21 | #include <unistd.h> | |
22 | ||
23 | ||
24 | static int | |
25 | do_test (void) | |
26 | { | |
27 | sem_t s; | |
28 | ||
29 | if (sem_init (&s, 0, 1) == -1) | |
30 | { | |
31 | puts ("init failed"); | |
32 | return 1; | |
33 | } | |
34 | ||
35 | if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1) | |
36 | { | |
37 | puts ("1st wait failed"); | |
38 | return 1; | |
39 | } | |
40 | ||
41 | if (sem_post (&s) == -1) | |
42 | { | |
43 | puts ("1st post failed"); | |
44 | return 1; | |
45 | } | |
46 | ||
47 | if (TEMP_FAILURE_RETRY (sem_trywait (&s)) == -1) | |
48 | { | |
49 | puts ("1st trywait failed"); | |
50 | return 1; | |
51 | } | |
52 | ||
53 | errno = 0; | |
54 | if (TEMP_FAILURE_RETRY (sem_trywait (&s)) != -1) | |
55 | { | |
56 | puts ("2nd trywait succeeded"); | |
57 | return 1; | |
58 | } | |
59 | else if (errno != EAGAIN) | |
60 | { | |
61 | puts ("2nd trywait did not set errno to EAGAIN"); | |
62 | return 1; | |
63 | } | |
64 | ||
65 | if (sem_post (&s) == -1) | |
66 | { | |
67 | puts ("2nd post failed"); | |
68 | return 1; | |
69 | } | |
70 | ||
71 | if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1) | |
72 | { | |
73 | puts ("2nd wait failed"); | |
74 | return 1; | |
75 | } | |
76 | ||
77 | if (sem_destroy (&s) == -1) | |
78 | { | |
79 | puts ("destroy failed"); | |
80 | return 1; | |
81 | } | |
82 | ||
83 | return 0; | |
84 | } | |
85 | ||
86 | #define TEST_FUNCTION do_test () | |
87 | #include "../test-skeleton.c" |