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1/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <errno.h>
20#include <pthread.h>
21#include <stdlib.h>
22#include <stdio.h>
23#include <string.h>
24#include <sys/time.h>
25
26
27static int kind[] =
28 {
29 PTHREAD_RWLOCK_PREFER_READER_NP,
30 PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
31 PTHREAD_RWLOCK_PREFER_WRITER_NP,
32 };
33
34
35static void *
36tf (void *arg)
37{
38 pthread_rwlock_t *r = arg;
39
40 /* Timeout: 0.3 secs. */
41 struct timeval tv;
42 (void) gettimeofday (&tv, NULL);
43
44 struct timespec ts;
45 TIMEVAL_TO_TIMESPEC (&tv, &ts);
46 ts.tv_nsec += 300000000;
47 if (ts.tv_nsec >= 1000000000)
48 {
49 ts.tv_nsec -= 1000000000;
50 ++ts.tv_sec;
51 }
52
53 puts ("child calling timedrdlock");
54
55 int err = pthread_rwlock_timedrdlock (r, &ts);
56 if (err == 0)
57 {
58 puts ("rwlock_timedrdlock returned");
59 pthread_exit ((void *) 1l);
60 }
61
62 if (err != ETIMEDOUT)
63 {
64 printf ("err = %s (%d), expected %s (%d)\n",
65 strerror (err), err, strerror (ETIMEDOUT), ETIMEDOUT);
66 pthread_exit ((void *) 1l);
67 }
68
69 puts ("1st child timedrdlock done");
70
71 struct timeval tv2;
72 (void) gettimeofday (&tv2, NULL);
73
74 timersub (&tv2, &tv, &tv);
75
76 if (tv.tv_usec < 200000)
77 {
78 puts ("timeout too short");
79 pthread_exit ((void *) 1l);
80 }
81
82 (void) gettimeofday (&tv, NULL);
83 TIMEVAL_TO_TIMESPEC (&tv, &ts);
84 ts.tv_sec += 10;
85 /* Note that the following operation makes ts invalid. */
86 ts.tv_nsec += 1000000000;
87
88 err = pthread_rwlock_timedrdlock (r, &ts);
89 if (err == 0)
90 {
91 puts ("2nd timedrdlock succeeded");
92 pthread_exit ((void *) 1l);
93 }
94 if (err != EINVAL)
95 {
96 puts ("2nd timedrdlock did not return EINVAL");
97 pthread_exit ((void *) 1l);
98 }
99
100 puts ("2nd child timedrdlock done");
101
102 return NULL;
103}
104
105
106static int
107do_test (void)
108{
109 size_t cnt;
110 for (cnt = 0; cnt < sizeof (kind) / sizeof (kind[0]); ++cnt)
111 {
112 pthread_rwlock_t r;
113 pthread_rwlockattr_t a;
114
115 if (pthread_rwlockattr_init (&a) != 0)
116 {
117 printf ("round %Zu: rwlockattr_t failed\n", cnt);
118 exit (1);
119 }
120
121 if (pthread_rwlockattr_setkind_np (&a, kind[cnt]) != 0)
122 {
123 printf ("round %Zu: rwlockattr_setkind failed\n", cnt);
124 exit (1);
125 }
126
127 if (pthread_rwlock_init (&r, &a) != 0)
128 {
129 printf ("round %Zu: rwlock_init failed\n", cnt);
130 exit (1);
131 }
132
133 if (pthread_rwlockattr_destroy (&a) != 0)
134 {
135 printf ("round %Zu: rwlockattr_destroy failed\n", cnt);
136 exit (1);
137 }
138
139 struct timeval tv;
140 (void) gettimeofday (&tv, NULL);
141
142 struct timespec ts;
143 TIMEVAL_TO_TIMESPEC (&tv, &ts);
144
145 ++ts.tv_sec;
146
147 /* Get a write lock. */
148 int e = pthread_rwlock_timedwrlock (&r, &ts);
149 if (e != 0)
150 {
151 printf ("round %Zu: rwlock_timedwrlock failed (%d)\n", cnt, e);
152 exit (1);
153 }
154
155 puts ("1st timedwrlock done");
156
157 (void) gettimeofday (&tv, NULL);
158 TIMEVAL_TO_TIMESPEC (&tv, &ts);
159 ++ts.tv_sec;
160 e = pthread_rwlock_timedrdlock (&r, &ts);
161 if (e == 0)
162 {
163 puts ("timedrdlock succeeded");
164 exit (1);
165 }
166 if (e != EDEADLK)
167 {
168 puts ("timedrdlock did not return EDEADLK");
169 exit (1);
170 }
171
172 puts ("1st timedrdlock done");
173
174 (void) gettimeofday (&tv, NULL);
175 TIMEVAL_TO_TIMESPEC (&tv, &ts);
176 ++ts.tv_sec;
177 e = pthread_rwlock_timedwrlock (&r, &ts);
178 if (e == 0)
179 {
180 puts ("2nd timedwrlock succeeded");
181 exit (1);
182 }
183 if (e != EDEADLK)
184 {
185 puts ("2nd timedwrlock did not return EDEADLK");
186 exit (1);
187 }
188
189 puts ("2nd timedwrlock done");
190
191 pthread_t th;
192 if (pthread_create (&th, NULL, tf, &r) != 0)
193 {
194 printf ("round %Zu: create failed\n", cnt);
195 exit (1);
196 }
197
198 puts ("started thread");
199
200 void *status;
201 if (pthread_join (th, &status) != 0)
202 {
203 printf ("round %Zu: join failed\n", cnt);
204 exit (1);
205 }
206 if (status != NULL)
207 {
208 printf ("failure in round %Zu\n", cnt);
209 exit (1);
210 }
211
212 puts ("joined thread");
213
214 if (pthread_rwlock_destroy (&r) != 0)
215 {
216 printf ("round %Zu: rwlock_destroy failed\n", cnt);
217 exit (1);
218 }
219 }
220
221 return 0;
222}
223
224#define TEST_FUNCTION do_test ()
225#include "../test-skeleton.c"
226

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