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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
31 int gettimeofday(struct timeval *tv, struct timezone *tz);
37 size_t ps = sysconf (_SC_PAGESIZE);
38 char tmpfname[] = "/tmp/tst-mutex9.XXXXXX";
43 pthread_mutexattr_t a;
47 fd = mkstemp (tmpfname);
50 printf ("cannot open temporary file: %m\n");
54 /* Make sure it is always removed. */
57 /* Create one page of data. */
58 memset (data, '\0', ps);
60 /* Write the data to the file. */
61 if (write (fd, data, ps) != (ssize_t) ps)
67 mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
68 if (mem == MAP_FAILED)
70 printf ("mmap failed: %m\n");
74 m = (pthread_mutex_t *) (((uintptr_t) mem + __alignof (pthread_mutex_t))
75 & ~(__alignof (pthread_mutex_t) - 1));
78 if (pthread_mutexattr_init (&a) != 0)
80 puts ("mutexattr_init failed");
84 if (pthread_mutexattr_setpshared (&a, PTHREAD_PROCESS_SHARED) != 0)
86 puts ("mutexattr_setpshared failed");
90 if (pthread_mutexattr_settype (&a, PTHREAD_MUTEX_RECURSIVE) != 0)
92 puts ("mutexattr_settype failed");
96 if (pthread_mutex_init (m, &a) != 0)
98 puts ("mutex_init failed");
102 if (pthread_mutex_lock (m) != 0)
104 puts ("mutex_lock failed");
108 if (pthread_mutexattr_destroy (&a) != 0)
110 puts ("mutexattr_destroy failed");
114 puts ("going to fork now");
118 puts ("fork failed");
123 if (pthread_mutex_trylock (m) == 0)
125 puts ("child: mutex_trylock succeeded");
129 if (pthread_mutex_unlock (m) == 0)
131 puts ("child: mutex_unlock succeeded");
136 gettimeofday (&tv, NULL);
138 TIMEVAL_TO_TIMESPEC (&tv, &ts);
139 ts.tv_nsec += 500000000;
140 if (ts.tv_nsec >= 1000000000)
143 ts.tv_nsec -= 1000000000;
146 int e = pthread_mutex_timedlock (m, &ts);
149 puts ("child: mutex_timedlock succeeded");
154 puts ("child: mutex_timedlock didn't time out");
160 pthread_mutex_lock (m);
162 puts ("child: mutex_lock returned");
170 if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
172 puts ("waitpid failed");
175 if (! WIFSIGNALED (status))
177 puts ("child not killed by signal");
180 if (WTERMSIG (status) != SIGALRM)
182 puts ("child not killed by SIGALRM");
190 #define TEST_FUNCTION do_test ()
191 #include "../test-skeleton.c"