1 /* Copyright (C) 2002-2024 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
24 static pthread_cond_t cond
= PTHREAD_COND_INITIALIZER
;
25 static pthread_mutex_t mut
= PTHREAD_MUTEX_INITIALIZER
;
33 err
= pthread_mutex_lock (&mut
);
35 error (EXIT_FAILURE
, err
, "child: cannot get mutex");
37 puts ("child: got mutex; signalling");
39 pthread_cond_signal (&cond
);
41 puts ("child: unlock");
43 err
= pthread_mutex_unlock (&mut
);
45 error (EXIT_FAILURE
, err
, "child: cannot unlock");
59 printf ("&cond = %p\n&mut = %p\n", &cond
, &mut
);
61 puts ("parent: get mutex");
63 err
= pthread_mutex_lock (&mut
);
65 error (EXIT_FAILURE
, err
, "parent: cannot get mutex");
67 puts ("parent: create child");
69 err
= pthread_create (&th
, NULL
, tf
, NULL
);
71 error (EXIT_FAILURE
, err
, "parent: cannot create thread");
73 puts ("parent: wait for condition");
75 /* This test will fail on spurious wake-ups, which are allowed; however,
76 the current implementation shouldn't produce spurious wake-ups in the
77 scenario we are testing here. */
78 err
= pthread_cond_wait (&cond
, &mut
);
80 error (EXIT_FAILURE
, err
, "parent: cannot wait fir signal");
82 puts ("parent: got signal");
84 err
= pthread_join (th
, NULL
);
86 error (EXIT_FAILURE
, err
, "parent: failed to join");
94 #define TEST_FUNCTION do_test ()
95 #include "../test-skeleton.c"