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 #include <errno.h>
19 #include <pthread.h>
20 #include <stdio.h>
21 
22 
23 static int
do_test(void)24 do_test (void)
25 {
26   pthread_rwlock_t r;
27   pthread_rwlockattr_t at;
28   int e;
29 
30   if (pthread_rwlockattr_init (&at) != 0)
31     {
32       puts ("rwlockattr_init failed");
33       return 1;
34     }
35   puts ("rwlockattr_init succeeded");
36 
37 #ifndef TYPE
38 # define TYPE PTHREAD_RWLOCK_PREFER_READER_NP
39 #endif
40 
41   if (pthread_rwlockattr_setkind_np (&at, TYPE) != 0)
42     {
43       puts ("rwlockattr_setkind failed");
44       return 1;
45     }
46   puts ("rwlockattr_setkind succeeded");
47 
48   if (pthread_rwlock_init (&r, &at) != 0)
49     {
50       puts ("rwlock_init failed");
51       return 1;
52     }
53   puts ("rwlock_init succeeded");
54 
55   if (pthread_rwlockattr_destroy (&at) != 0)
56     {
57       puts ("rwlockattr_destroy failed");
58       return 1;
59     }
60   puts ("rwlockattr_destroy succeeded");
61 
62   if (pthread_rwlock_wrlock (&r) != 0)
63     {
64       puts ("1st rwlock_wrlock failed");
65       return 1;
66     }
67   puts ("1st rwlock_wrlock succeeded");
68 
69   e = pthread_rwlock_tryrdlock (&r);
70   if (e == 0)
71     {
72       puts ("rwlock_tryrdlock on rwlock with writer succeeded");
73       return 1;
74     }
75   if (e != EBUSY)
76     {
77       puts ("rwlock_tryrdlock on rwlock with writer return value != EBUSY");
78       return 1;
79     }
80   puts ("rwlock_tryrdlock on rwlock with writer failed with EBUSY");
81 
82   e = pthread_rwlock_trywrlock (&r);
83   if (e == 0)
84     {
85       puts ("rwlock_trywrlock on rwlock with writer succeeded");
86       return 1;
87     }
88   if (e != EBUSY)
89     {
90       puts ("rwlock_trywrlock on rwlock with writer return value != EBUSY");
91       return 1;
92     }
93   puts ("rwlock_trywrlock on rwlock with writer failed with EBUSY");
94 
95   if (pthread_rwlock_unlock (&r) != 0)
96     {
97       puts ("1st rwlock_unlock failed");
98       return 1;
99     }
100   puts ("1st rwlock_unlock succeeded");
101 
102   if (pthread_rwlock_tryrdlock (&r) != 0)
103     {
104       puts ("rwlock_tryrdlock on unlocked rwlock failed");
105       return 1;
106     }
107   puts ("rwlock_tryrdlock on unlocked rwlock succeeded");
108 
109   e = pthread_rwlock_trywrlock (&r);
110   if (e == 0)
111     {
112       puts ("rwlock_trywrlock on rwlock with reader succeeded");
113       return 1;
114     }
115   if (e != EBUSY)
116     {
117       puts ("rwlock_trywrlock on rwlock with reader return value != EBUSY");
118       return 1;
119     }
120   puts ("rwlock_trywrlock on rwlock with reader failed with EBUSY");
121 
122   if (pthread_rwlock_unlock (&r) != 0)
123     {
124       puts ("2nd rwlock_unlock failed");
125       return 1;
126     }
127   puts ("2nd rwlock_unlock succeeded");
128 
129   if (pthread_rwlock_trywrlock (&r) != 0)
130     {
131       puts ("rwlock_trywrlock on unlocked rwlock failed");
132       return 1;
133     }
134   puts ("rwlock_trywrlock on unlocked rwlock succeeded");
135 
136   e = pthread_rwlock_tryrdlock (&r);
137   if (e == 0)
138     {
139       puts ("rwlock_tryrdlock on rwlock with writer succeeded");
140       return 1;
141     }
142   if (e != EBUSY)
143     {
144       puts ("rwlock_tryrdlock on rwlock with writer return value != EBUSY");
145       return 1;
146     }
147   puts ("rwlock_tryrdlock on rwlock with writer failed with EBUSY");
148 
149   if (pthread_rwlock_unlock (&r) != 0)
150     {
151       puts ("3rd rwlock_unlock failed");
152       return 1;
153     }
154   puts ("3rd rwlock_unlock succeeded");
155 
156   if (pthread_rwlock_destroy (&r) != 0)
157     {
158       puts ("rwlock_destroy failed");
159       return 1;
160     }
161   puts ("rwlock_destroy succeeded");
162 
163   return 0;
164 }
165 
166 #define TEST_FUNCTION do_test ()
167 #include "../test-skeleton.c"
168