1 /* Copyright (C) 2003-2014 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/>. */
34 size_t ps
= sysconf (_SC_PAGESIZE
);
35 char tmpfname
[] = "/tmp/tst-mutex9.XXXXXX";
40 pthread_mutexattr_t a
;
43 fd
= mkstemp (tmpfname
);
46 printf ("cannot open temporary file: %m\n");
50 /* Make sure it is always removed. */
53 /* Create one page of data. */
54 memset (data
, '\0', ps
);
56 /* Write the data to the file. */
57 if (write (fd
, data
, ps
) != (ssize_t
) ps
)
63 mem
= mmap (NULL
, ps
, PROT_READ
| PROT_WRITE
, MAP_SHARED
, fd
, 0);
64 if (mem
== MAP_FAILED
)
66 printf ("mmap failed: %m\n");
70 m
= (pthread_mutex_t
*) (((uintptr_t) mem
+ __alignof (pthread_mutex_t
))
71 & ~(__alignof (pthread_mutex_t
) - 1));
73 if (pthread_mutexattr_init (&a
) != 0)
75 puts ("mutexattr_init failed");
79 if (pthread_mutexattr_setpshared (&a
, PTHREAD_PROCESS_SHARED
) != 0)
81 puts ("mutexattr_setpshared failed");
85 if (pthread_mutexattr_settype (&a
, PTHREAD_MUTEX_RECURSIVE
) != 0)
87 puts ("mutexattr_settype failed");
92 if (pthread_mutexattr_setprotocol (&a
, PTHREAD_PRIO_INHERIT
) != 0)
94 puts ("pthread_mutexattr_setprotocol failed");
100 if ((e
= pthread_mutex_init (m
, &a
)) != 0)
105 puts ("PI mutexes unsupported");
109 puts ("mutex_init failed");
113 if (pthread_mutex_lock (m
) != 0)
115 puts ("mutex_lock failed");
119 if (pthread_mutexattr_destroy (&a
) != 0)
121 puts ("mutexattr_destroy failed");
125 puts ("going to fork now");
129 puts ("fork failed");
134 if (pthread_mutex_trylock (m
) == 0)
136 puts ("child: mutex_trylock succeeded");
140 if (pthread_mutex_unlock (m
) == 0)
142 puts ("child: mutex_unlock succeeded");
147 gettimeofday (&tv
, NULL
);
149 TIMEVAL_TO_TIMESPEC (&tv
, &ts
);
150 ts
.tv_nsec
+= 500000000;
151 if (ts
.tv_nsec
>= 1000000000)
154 ts
.tv_nsec
-= 1000000000;
157 e
= pthread_mutex_timedlock (m
, &ts
);
160 puts ("child: mutex_timedlock succeeded");
165 puts ("child: mutex_timedlock didn't time out");
171 pthread_mutex_lock (m
);
173 puts ("child: mutex_lock returned");
181 if (TEMP_FAILURE_RETRY (waitpid (pid
, &status
, 0)) != pid
)
183 puts ("waitpid failed");
186 if (! WIFSIGNALED (status
))
188 puts ("child not killed by signal");
191 if (WTERMSIG (status
) != SIGALRM
)
193 puts ("child not killed by SIGALRM");
201 #define TEST_FUNCTION do_test ()
202 #include "../test-skeleton.c"