1 | /* Helper program for testing the pthread_rwlock_t and pthread_rwlockattr_t |
2 | pretty printers. |
3 | |
4 | Copyright (C) 2016-2022 Free Software Foundation, Inc. |
5 | This file is part of the GNU C Library. |
6 | |
7 | The GNU C Library is free software; you can redistribute it and/or |
8 | modify it under the terms of the GNU Lesser General Public |
9 | License as published by the Free Software Foundation; either |
10 | version 2.1 of the License, or (at your option) any later version. |
11 | |
12 | The GNU C Library is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | Lesser General Public License for more details. |
16 | |
17 | You should have received a copy of the GNU Lesser General Public |
18 | License along with the GNU C Library; if not, see |
19 | <https://www.gnu.org/licenses/>. */ |
20 | |
21 | /* Keep the calls to the pthread_* functions on separate lines to make it easy |
22 | to advance through the program using the gdb 'next' command. */ |
23 | |
24 | #include <pthread.h> |
25 | |
26 | #define PASS 0 |
27 | #define FAIL 1 |
28 | |
29 | /* Need these so we don't have lines longer than 79 chars. */ |
30 | #define SET_KIND(attr, kind) pthread_rwlockattr_setkind_np (attr, kind) |
31 | #define SET_SHARED(attr, shared) pthread_rwlockattr_setpshared (attr, shared) |
32 | |
33 | static int rwlock_reinit (pthread_rwlock_t *rwlock, |
34 | const pthread_rwlockattr_t *attr); |
35 | static int test_setkind_np (pthread_rwlock_t *rwlock, |
36 | pthread_rwlockattr_t *attr); |
37 | static int test_setpshared (pthread_rwlock_t *rwlock, |
38 | pthread_rwlockattr_t *attr); |
39 | |
40 | int |
41 | main (void) |
42 | { |
43 | pthread_rwlock_t rwlock; |
44 | pthread_rwlockattr_t attr; |
45 | int result = FAIL; |
46 | |
47 | if (pthread_rwlockattr_init (attr: &attr) == 0 |
48 | && pthread_rwlock_init (rwlock: &rwlock, NULL) == 0 |
49 | && test_setkind_np (rwlock: &rwlock, attr: &attr) == PASS |
50 | && test_setpshared (rwlock: &rwlock, attr: &attr) == PASS) |
51 | result = PASS; |
52 | /* Else, one of the pthread_rwlock* functions failed. */ |
53 | |
54 | return result; |
55 | } |
56 | |
57 | /* Destroys RWLOCK and re-initializes it using ATTR. */ |
58 | static int |
59 | rwlock_reinit (pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr) |
60 | { |
61 | int result = FAIL; |
62 | |
63 | if (pthread_rwlock_destroy (rwlock: rwlock) == 0 |
64 | && pthread_rwlock_init (rwlock: rwlock, attr: attr) == 0) |
65 | result = PASS; |
66 | |
67 | return result; |
68 | } |
69 | |
70 | /* Tests setting whether the rwlock prefers readers or writers. */ |
71 | static int |
72 | test_setkind_np (pthread_rwlock_t *rwlock, pthread_rwlockattr_t *attr) |
73 | { |
74 | int result = FAIL; |
75 | |
76 | if (SET_KIND (attr, PTHREAD_RWLOCK_PREFER_READER_NP) == 0 /* Set kind. */ |
77 | && rwlock_reinit (rwlock, attr) == PASS |
78 | && SET_KIND (attr, PTHREAD_RWLOCK_PREFER_WRITER_NP) == 0 |
79 | && rwlock_reinit (rwlock, attr) == PASS |
80 | && SET_KIND (attr, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP) == 0 |
81 | && rwlock_reinit (rwlock, attr) == PASS) |
82 | result = PASS; |
83 | |
84 | return result; |
85 | } |
86 | |
87 | /* Tests setting whether the rwlock can be shared between processes. */ |
88 | static int |
89 | test_setpshared (pthread_rwlock_t *rwlock, pthread_rwlockattr_t *attr) |
90 | { |
91 | int result = FAIL; |
92 | |
93 | if (SET_SHARED (attr, PTHREAD_PROCESS_SHARED) == 0 /* Set shared. */ |
94 | && rwlock_reinit (rwlock, attr) == PASS |
95 | && SET_SHARED (attr, PTHREAD_PROCESS_PRIVATE) == 0 |
96 | && rwlock_reinit (rwlock, attr) == PASS) |
97 | result = PASS; |
98 | |
99 | return result; |
100 | } |
101 | |