1 /* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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.
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; if not, see
17 <http://www.gnu.org/licenses/>. */
30 int gettimeofday(struct timeval *tv, struct timezone *tz);
36 size_t ps = sysconf (_SC_PAGESIZE);
37 char tmpfname[] = "/tmp/tst-mutex9.XXXXXX";
42 pthread_mutexattr_t a;
46 fd = mkstemp (tmpfname);
49 printf ("cannot open temporary file: %m\n");
53 /* Make sure it is always removed. */
56 /* Create one page of data. */
57 memset (data, '\0', ps);
59 /* Write the data to the file. */
60 if (write (fd, data, ps) != (ssize_t) ps)
66 mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
67 if (mem == MAP_FAILED)
69 printf ("mmap failed: %m\n");
73 m = (pthread_mutex_t *) (((uintptr_t) mem + __alignof (pthread_mutex_t))
74 & ~(__alignof (pthread_mutex_t) - 1));
77 if (pthread_mutexattr_init (&a) != 0)
79 puts ("mutexattr_init failed");
83 if (pthread_mutexattr_setpshared (&a, PTHREAD_PROCESS_SHARED) != 0)
85 puts ("mutexattr_setpshared failed");
89 if (pthread_mutexattr_settype (&a, PTHREAD_MUTEX_RECURSIVE) != 0)
91 puts ("mutexattr_settype failed");
95 if (pthread_mutex_init (m, &a) != 0)
97 puts ("mutex_init failed");
101 if (pthread_mutex_lock (m) != 0)
103 puts ("mutex_lock failed");
107 if (pthread_mutexattr_destroy (&a) != 0)
109 puts ("mutexattr_destroy failed");
113 puts ("going to fork now");
117 puts ("fork failed");
122 if (pthread_mutex_trylock (m) == 0)
124 puts ("child: mutex_trylock succeeded");
128 if (pthread_mutex_unlock (m) == 0)
130 puts ("child: mutex_unlock succeeded");
135 gettimeofday (&tv, NULL);
137 TIMEVAL_TO_TIMESPEC (&tv, &ts);
138 ts.tv_nsec += 500000000;
139 if (ts.tv_nsec >= 1000000000)
142 ts.tv_nsec -= 1000000000;
145 int e = pthread_mutex_timedlock (m, &ts);
148 puts ("child: mutex_timedlock succeeded");
153 puts ("child: mutex_timedlock didn't time out");
159 pthread_mutex_lock (m);
161 puts ("child: mutex_lock returned");
169 if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
171 puts ("waitpid failed");
174 if (! WIFSIGNALED (status))
176 puts ("child not killed by signal");
179 if (WTERMSIG (status) != SIGALRM)
181 puts ("child not killed by SIGALRM");
189 #define TEST_FUNCTION do_test ()
190 #include "../test-skeleton.c"