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1/* Helper program for testing the pthread_rwlock_t pretty printer.
2
3 Copyright (C) 2016-2019 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
19
20/* Keep the calls to the pthread_* functions on separate lines to make it easy
21 to advance through the program using the gdb 'next' command. */
22
23#include <pthread.h>
24
25#define PASS 0
26#define FAIL 1
27
28static int test_locking_reader (pthread_rwlock_t *rwlock);
29static int test_locking_writer (pthread_rwlock_t *rwlock);
30
31int
32main (void)
33{
34 pthread_rwlock_t rwlock;
35
36 int result = FAIL;
37
38 if (test_locking_reader (&rwlock) == PASS
39 && test_locking_writer (&rwlock) == PASS)
40 result = PASS;
41 /* Else, one of the pthread_rwlock* functions failed. */
42
43 return result;
44}
45
46/* Tests locking the rwlock multiple times as a reader. */
47static int
48test_locking_reader (pthread_rwlock_t *rwlock)
49{
50 int result = FAIL;
51
52 if (pthread_rwlock_init (rwlock, NULL) == 0
53 && pthread_rwlock_rdlock (rwlock) == 0 /* Test locking (reader). */
54 && pthread_rwlock_rdlock (rwlock) == 0
55 && pthread_rwlock_rdlock (rwlock) == 0
56 && pthread_rwlock_unlock (rwlock) == 0
57 && pthread_rwlock_unlock (rwlock) == 0
58 && pthread_rwlock_unlock (rwlock) == 0
59 && pthread_rwlock_destroy (rwlock) == 0)
60 result = PASS;
61
62 return result;
63}
64
65/* Tests locking the rwlock as a writer. */
66static int
67test_locking_writer (pthread_rwlock_t *rwlock)
68{
69 int result = FAIL;
70
71 if (pthread_rwlock_init (rwlock, NULL) == 0
72 && pthread_rwlock_wrlock (rwlock) == 0 /* Test locking (writer). */
73 && pthread_rwlock_unlock (rwlock) == 0
74 && pthread_rwlock_destroy (rwlock) == 0)
75 result = PASS;
76
77 return result;
78}
79

Warning: That file was not part of the compilation database. It may have many parsing errors.