1/* Copyright (C) 2002-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18/* This test case checks more than standard compliance. An
19 implementation may provide this service but it is not required to
20 do so. */
21
22#include <errno.h>
23#include <pthread.h>
24#include <stdio.h>
25
26
27static int
28do_test (void)
29{
30 pthread_rwlock_t r;
31 int e;
32
33 if (pthread_rwlock_init (rwlock: &r, NULL) != 0)
34 {
35 puts (s: "rwlock_init failed");
36 return 1;
37 }
38 puts (s: "rwlock_init succeeded");
39
40 if (pthread_rwlock_trywrlock (rwlock: &r) != 0)
41 {
42 puts (s: "rwlock_trywrlock on unlocked rwlock failed");
43 return 1;
44 }
45 puts (s: "rwlock_trywrlock on unlocked rwlock succeeded");
46
47 e = pthread_rwlock_rdlock (rwlock: &r);
48 if (e == 0)
49 {
50 puts (s: "rwlock_rdlock on rwlock with writer succeeded");
51 return 1;
52 }
53 if (e != EDEADLK)
54 {
55 puts (s: "rwlock_rdlock on rwlock with writer failed != EDEADLK");
56 return 1;
57 }
58 puts (s: "rwlock_rdlock on rwlock with writer failed with EDEADLK");
59
60 e = pthread_rwlock_wrlock (rwlock: &r);
61 if (e == 0)
62 {
63 puts (s: "rwlock_wrlock on rwlock with writer succeeded");
64 return 1;
65 }
66 if (e != EDEADLK)
67 {
68 puts (s: "rwlock_wrlock on rwlock with writer failed != EDEADLK");
69 return 1;
70 }
71 puts (s: "rwlock_wrlock on rwlock with writer failed with EDEADLK");
72
73 if (pthread_rwlock_unlock (rwlock: &r) != 0)
74 {
75 puts (s: "rwlock_unlock failed");
76 return 1;
77 }
78 puts (s: "rwlock_unlock succeeded");
79
80 if (pthread_rwlock_destroy (rwlock: &r) != 0)
81 {
82 puts (s: "rwlock_destroy failed");
83 return 1;
84 }
85 puts (s: "rwlock_destroy succeeded");
86
87 return 0;
88}
89
90#define TEST_FUNCTION do_test ()
91#include "../test-skeleton.c"
92

source code of glibc/nptl/tst-rwlock3.c