1 /* Copyright (C) 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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
26 static pthread_mutex_t mut
= PTHREAD_MUTEX_INITIALIZER
;
27 static pthread_cond_t cond
= PTHREAD_COND_INITIALIZER
;
36 printf ("child %d: wait\n", i
);
38 err
= pthread_cond_wait (&cond
, &mut
);
40 error (EXIT_FAILURE
, err
, "child %d: failed to wait", i
);
42 printf ("child %d: woken up\n", i
);
44 err
= pthread_mutex_unlock (&mut
);
46 error (EXIT_FAILURE
, err
, "child %d: unlock failed", i
);
48 printf ("child %d: done\n", i
);
64 printf ("&cond = %p\n&mut = %p\n", &cond
, &mut
);
68 err
= pthread_mutex_lock (&mut
);
70 error (EXIT_FAILURE
, err
, "initial locking failed");
72 for (i
= 0; i
< N
; ++i
)
74 printf ("create thread %d\n", i
);
76 err
= pthread_create (&th
[i
], NULL
, tf
, (void *) (long int) i
);
78 error (EXIT_FAILURE
, err
, "cannot create thread %d", i
);
80 printf ("wait for child %d\n", i
);
82 /* Lock and thereby wait for the child to start up and get the
83 conditional variable. */
84 pthread_mutex_lock (&mut
);
87 puts ("final unlock");
89 /* Unlock in preparation of the broadcast. */
90 err
= pthread_mutex_unlock (&mut
);
92 error (EXIT_FAILURE
, err
, "parent: unlock failed");
96 /* Wake up all threads. */
97 err
= pthread_cond_broadcast (&cond
);
99 error (EXIT_FAILURE
, err
, "parent: broadcast failed");
101 /* Join all threads. */
102 for (i
= 0; i
< N
; ++i
)
104 printf ("join thread %d\n", i
);
106 err
= pthread_join (th
[i
], NULL
);
108 error (EXIT_FAILURE
, err
, "join of child %d failed", i
);
117 #define TEST_FUNCTION do_test ()
118 #include "../test-skeleton.c"