diff options
Diffstat (limited to 'libc/nptl/old_pthread_cond_broadcast.c')
-rw-r--r-- | libc/nptl/old_pthread_cond_broadcast.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/libc/nptl/old_pthread_cond_broadcast.c b/libc/nptl/old_pthread_cond_broadcast.c new file mode 100644 index 000000000..3852943fa --- /dev/null +++ b/libc/nptl/old_pthread_cond_broadcast.c @@ -0,0 +1,58 @@ +/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <stdlib.h> +#include "pthreadP.h" +#include <atomic.h> +#include <shlib-compat.h> + + +#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_3_2) +int +__pthread_cond_broadcast_2_0 (cond) + pthread_cond_2_0_t *cond; +{ + if (cond->cond == NULL) + { + pthread_cond_t *newcond; + +#if LLL_MUTEX_LOCK_INITIALIZER == 0 + newcond = (pthread_cond_t *) calloc (sizeof (pthread_cond_t), 1); + if (newcond == NULL) + return ENOMEM; +#else + newcond = (pthread_cond_t *) malloc (sizeof (pthread_cond_t)); + if (newcond == NULL) + return ENOMEM; + + /* Initialize the condvar. */ + (void) pthread_cond_init (newcond, NULL); +#endif + + if (atomic_compare_and_exchange_bool_acq (&cond->cond, newcond, NULL)) + /* Somebody else just initialized the condvar. */ + free (newcond); + } + + return __pthread_cond_broadcast (cond->cond); +} +compat_symbol (libpthread, __pthread_cond_broadcast_2_0, + pthread_cond_broadcast, GLIBC_2_0); +#endif |