Add AT_HWCAP2 as a new auxv_t a_type to elf.h.
[glibc.git] / nptl / tst-rwlock8.c
blobb67e55a17b867ff56993b77c3c85c8a9211d41d7
1 /* Test program for timedout read/write lock functions.
2 Copyright (C) 2000, 2003 Free Software Foundation, Inc.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
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 License as
7 published by the Free Software Foundation; either version 2.1 of the
8 License, or (at your option) any later version.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If
17 not, see <http://www.gnu.org/licenses/>. */
19 #include <errno.h>
20 #include <error.h>
21 #include <pthread.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <time.h>
25 #include <unistd.h>
28 #define NWRITERS 15
29 #define WRITETRIES 10
30 #define NREADERS 15
31 #define READTRIES 15
33 #define DELAY 1000000
35 #ifndef INIT
36 # define INIT PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP
37 #endif
39 static pthread_rwlock_t lock = INIT;
42 static void *
43 writer_thread (void *nr)
45 struct timespec delay;
46 int n;
48 delay.tv_sec = 0;
49 delay.tv_nsec = DELAY;
51 for (n = 0; n < WRITETRIES; ++n)
53 printf ("writer thread %ld tries again\n", (long int) nr);
55 if (pthread_rwlock_wrlock (&lock) != 0)
57 puts ("wrlock failed");
58 exit (1);
61 printf ("writer thread %ld succeeded\n", (long int) nr);
63 nanosleep (&delay, NULL);
65 if (pthread_rwlock_unlock (&lock) != 0)
67 puts ("unlock for writer failed");
68 exit (1);
71 printf ("writer thread %ld released\n", (long int) nr);
74 return NULL;
78 static void *
79 reader_thread (void *nr)
81 struct timespec delay;
82 int n;
84 delay.tv_sec = 0;
85 delay.tv_nsec = DELAY;
87 for (n = 0; n < READTRIES; ++n)
89 printf ("reader thread %ld tries again\n", (long int) nr);
91 if (pthread_rwlock_rdlock (&lock) != 0)
93 puts ("rdlock failed");
94 exit (1);
97 printf ("reader thread %ld succeeded\n", (long int) nr);
99 nanosleep (&delay, NULL);
101 if (pthread_rwlock_unlock (&lock) != 0)
103 puts ("unlock for reader failed");
104 exit (1);
107 printf ("reader thread %ld released\n", (long int) nr);
110 return NULL;
114 static int
115 do_test (void)
117 pthread_t thwr[NWRITERS];
118 pthread_t thrd[NREADERS];
119 int n;
120 void *res;
122 /* Make standard error the same as standard output. */
123 dup2 (1, 2);
125 /* Make sure we see all message, even those on stdout. */
126 setvbuf (stdout, NULL, _IONBF, 0);
128 for (n = 0; n < NWRITERS; ++n)
129 if (pthread_create (&thwr[n], NULL, writer_thread,
130 (void *) (long int) n) != 0)
132 puts ("writer create failed");
133 exit (1);
136 for (n = 0; n < NREADERS; ++n)
137 if (pthread_create (&thrd[n], NULL, reader_thread,
138 (void *) (long int) n) != 0)
140 puts ("reader create failed");
141 exit (1);
144 /* Wait for all the threads. */
145 for (n = 0; n < NWRITERS; ++n)
146 if (pthread_join (thwr[n], &res) != 0)
148 puts ("writer join failed");
149 exit (1);
151 for (n = 0; n < NREADERS; ++n)
152 if (pthread_join (thrd[n], &res) != 0)
154 puts ("reader join failed");
155 exit (1);
158 return 0;
161 #define TIMEOUT 30
162 #define TEST_FUNCTION do_test ()
163 #include "../test-skeleton.c"