1/* Copyright (C) 2002-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
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.
8
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.
13
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/>. */
17
18#include <errno.h>
19#include <stdlib.h>
20#include "pthreadP.h"
21#include <atomic.h>
22#include <shlib-compat.h>
23
24
25#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_3_2)
26int
27__pthread_cond_wait_2_0 (pthread_cond_2_0_t *cond, pthread_mutex_t *mutex)
28{
29 if (cond->cond == NULL)
30 {
31 pthread_cond_t *newcond;
32
33 newcond = (pthread_cond_t *) calloc (sizeof (pthread_cond_t), 1);
34 if (newcond == NULL)
35 return ENOMEM;
36
37 if (atomic_compare_and_exchange_bool_acq (&cond->cond, newcond, NULL))
38 /* Somebody else just initialized the condvar. */
39 free (newcond);
40 }
41
42 return __pthread_cond_wait (cond->cond, mutex);
43}
44compat_symbol (libpthread, __pthread_cond_wait_2_0, pthread_cond_wait,
45 GLIBC_2_0);
46#endif
47