1 /* C11 threads condition variable tests.
2 Copyright (C) 2018-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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 <https://www.gnu.org/licenses/>. */
23 #include <support/check.h>
25 /* Shared condition variable between child and parent. */
28 /* Mutex needed to signal and wait threads. */
34 /* Acquire the lock so that cnd_signal does not run until
35 cnd_timedwait has been called. */
36 if (mtx_lock (&mutex
) != thrd_success
)
37 FAIL_EXIT1 ("mtx_lock failed");
38 if (cnd_signal (&cond
) != thrd_success
)
39 FAIL_EXIT1 ("cnd_signal");
40 if (mtx_unlock (&mutex
) != thrd_success
)
41 FAIL_EXIT1 ("mtx_unlock");
43 thrd_exit (thrd_success
);
51 if (cnd_init (&cond
) != thrd_success
)
52 FAIL_EXIT1 ("cnd_init failed");
53 if (mtx_init (&mutex
, mtx_plain
) != thrd_success
)
54 FAIL_EXIT1 ("mtx_init failed");
56 if (mtx_lock (&mutex
) != thrd_success
)
57 FAIL_EXIT1 ("mtx_lock failed");
59 if (thrd_create (&id
, (thrd_start_t
) signal_parent
, NULL
)
61 FAIL_EXIT1 ("thrd_create failed");
63 if (cnd_wait (&cond
, &mutex
) != thrd_success
)
64 FAIL_EXIT1 ("cnd_wait failed");
66 /* Joining is not mandatory here, but still done to assure child thread
68 if (thrd_join (id
, NULL
) != thrd_success
)
69 FAIL_EXIT1 ("thrd_join failed");
71 if (mtx_unlock (&mutex
) != thrd_success
)
72 FAIL_EXIT1 ("mtx_unlock");
80 #include <support/test-driver.c>