1 /* pthread_cond_destroy. Generic version.
2 Copyright (C) 2002-2023 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/>. */
20 #include <pt-internal.h>
23 __pthread_cond_destroy (pthread_cond_t
*cond
)
25 /* Set the wake request flag. */
26 unsigned int wrefs
= atomic_fetch_or_acquire (&cond
->__wrefs
, 1);
28 __pthread_spin_wait (&cond
->__lock
);
31 __pthread_spin_unlock (&cond
->__lock
);
34 __pthread_spin_unlock (&cond
->__lock
);
36 while (wrefs
>> 1 != 0)
38 __gsync_wait (__mach_task_self (), (vm_offset_t
) &cond
->__wrefs
, wrefs
,
40 wrefs
= atomic_load_acquire (&cond
->__wrefs
);
42 /* The memory the condvar occupies can now be reused. */
47 weak_alias (__pthread_cond_destroy
, pthread_cond_destroy
);