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 
27 static int
do_test(void)28 do_test (void)
29 {
30   pthread_rwlock_t r;
31   int e;
32 
33   if (pthread_rwlock_init (&r, NULL) != 0)
34     {
35       puts ("rwlock_init failed");
36       return 1;
37     }
38   puts ("rwlock_init succeeded");
39 
40   if (pthread_rwlock_trywrlock (&r) != 0)
41     {
42       puts ("rwlock_trywrlock on unlocked rwlock failed");
43       return 1;
44     }
45   puts ("rwlock_trywrlock on unlocked rwlock succeeded");
46 
47   e = pthread_rwlock_rdlock (&r);
48   if (e == 0)
49     {
50       puts ("rwlock_rdlock on rwlock with writer succeeded");
51       return 1;
52     }
53   if (e != EDEADLK)
54     {
55       puts ("rwlock_rdlock on rwlock with writer failed != EDEADLK");
56       return 1;
57     }
58   puts ("rwlock_rdlock on rwlock with writer failed with EDEADLK");
59 
60   e = pthread_rwlock_wrlock (&r);
61   if (e == 0)
62     {
63       puts ("rwlock_wrlock on rwlock with writer succeeded");
64       return 1;
65     }
66   if (e != EDEADLK)
67     {
68       puts ("rwlock_wrlock on rwlock with writer failed != EDEADLK");
69       return 1;
70     }
71   puts ("rwlock_wrlock on rwlock with writer failed with EDEADLK");
72 
73   if (pthread_rwlock_unlock (&r) != 0)
74     {
75       puts ("rwlock_unlock failed");
76       return 1;
77     }
78   puts ("rwlock_unlock succeeded");
79 
80   if (pthread_rwlock_destroy (&r) != 0)
81     {
82       puts ("rwlock_destroy failed");
83       return 1;
84     }
85   puts ("rwlock_destroy succeeded");
86 
87   return 0;
88 }
89 
90 #define TEST_FUNCTION do_test ()
91 #include "../test-skeleton.c"
92