Update.
[glibc.git] / nptl / old_pthread_cond_timedwait.c
blob27c10938d3079de7933a205fd9b1c19315ba721f
1 /* Copyright (C) 2002, 2003 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
18 02111-1307 USA. */
20 #include <errno.h>
21 #include <stdlib.h>
22 #include "pthreadP.h"
23 #include <atomic.h>
24 #include <shlib-compat.h>
27 #if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_3_2)
28 int
29 __pthread_cond_timedwait_2_0 (cond, mutex, abstime)
30 pthread_cond_2_0_t *cond;
31 pthread_mutex_t *mutex;
32 const struct timespec *abstime;
34 if (cond->cond == NULL)
36 pthread_cond_t *newcond;
38 #if LLL_MUTEX_LOCK_INITIALIZER == 0
39 newcond = (pthread_cond_t *) calloc (sizeof (pthread_cond_t), 1);
40 if (newcond == NULL)
41 return ENOMEM;
42 #else
43 newcond = (pthread_cond_t *) malloc (sizeof (pthread_cond_t));
44 if (newcond == NULL)
45 return ENOMEM;
47 /* Initialize the condvar. */
48 (void) pthread_cond_init (newcond, NULL);
49 #endif
51 if (atomic_compare_and_exchange_bool_acq (&cond->cond, newcond, NULL))
52 /* Somebody else just initialized the condvar. */
53 free (newcond);
56 return __pthread_cond_timedwait (cond->cond, mutex, abstime);
58 compat_symbol (libpthread, __pthread_cond_timedwait_2_0,
59 pthread_cond_timedwait, GLIBC_2_0);
60 #endif