1 /* Copyright (C) 2003 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
32 #if ! _POSIX_THREAD_PROCESS_SHARED
34 puts ("_POSIX_THREAD_PROCESS_SHARED not supported, test skipped");
39 size_t ps
= sysconf (_SC_PAGESIZE
);
40 char tmpfname
[] = "/tmp/tst-mutex9.XXXXXX";
45 pthread_mutexattr_t a
;
49 fd
= mkstemp (tmpfname
);
52 printf ("cannot open temporary file: %m\n");
56 /* Make sure it is always removed. */
59 /* Create one page of data. */
60 memset (data
, '\0', ps
);
62 /* Write the data to the file. */
63 if (write (fd
, data
, ps
) != (ssize_t
) ps
)
69 mem
= mmap (NULL
, ps
, PROT_READ
| PROT_WRITE
, MAP_SHARED
, fd
, 0);
70 if (mem
== MAP_FAILED
)
72 printf ("mmap failed: %m\n");
76 m
= (pthread_mutex_t
*) (((uintptr_t) mem
+ __alignof (pthread_mutex_t
))
77 & ~(__alignof (pthread_mutex_t
) - 1));
80 if (pthread_mutexattr_init (&a
) != 0)
82 puts ("mutexattr_init failed");
86 if (pthread_mutexattr_setpshared (&a
, PTHREAD_PROCESS_SHARED
) != 0)
88 puts ("mutexattr_setpshared failed");
92 if (pthread_mutexattr_settype (&a
, PTHREAD_MUTEX_RECURSIVE
) != 0)
94 puts ("mutexattr_settype failed");
98 if (pthread_mutex_init (m
, &a
) != 0)
100 puts ("mutex_init failed");
104 if (pthread_mutex_lock (m
) != 0)
106 puts ("mutex_lock failed");
110 if (pthread_mutexattr_destroy (&a
) != 0)
112 puts ("mutexattr_destroy failed");
116 puts ("going to fork now");
120 puts ("fork failed");
125 if (pthread_mutex_trylock (m
) == 0)
127 puts ("child: mutex_trylock succeeded");
131 if (pthread_mutex_unlock (m
) == 0)
133 puts ("child: mutex_unlock succeeded");
138 gettimeofday (&tv
, NULL
);
140 TIMEVAL_TO_TIMESPEC (&tv
, &ts
);
141 ts
.tv_nsec
+= 500000000;
142 if (ts
.tv_nsec
>= 1000000000)
145 ts
.tv_nsec
-= 1000000000;
148 int e
= pthread_mutex_timedlock (m
, &ts
);
151 puts ("child: mutex_timedlock succeeded");
156 puts ("child: mutex_timedlock didn't time out");
162 pthread_mutex_lock (m
);
164 puts ("child: mutex_lock returned");
172 if (TEMP_FAILURE_RETRY (waitpid (pid
, &status
, 0)) != pid
)
174 puts ("waitpid failed");
177 if (! WIFSIGNALED (status
))
179 puts ("child not killed by signal");
182 if (WTERMSIG (status
) != SIGALRM
)
184 puts ("child not killed by SIGALRM");
193 #define TEST_FUNCTION do_test ()
194 #include "../test-skeleton.c"