diff options
Diffstat (limited to 'libpthread/nptl/pthread_barrier_init.c')
| -rw-r--r-- | libpthread/nptl/pthread_barrier_init.c | 57 | 
1 files changed, 57 insertions, 0 deletions
| diff --git a/libpthread/nptl/pthread_barrier_init.c b/libpthread/nptl/pthread_barrier_init.c new file mode 100644 index 000000000..98a7ecc3f --- /dev/null +++ b/libpthread/nptl/pthread_barrier_init.c @@ -0,0 +1,57 @@ +/* Copyright (C) 2002 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 "pthreadP.h" +#include <lowlevellock.h> + + +int +pthread_barrier_init ( +     pthread_barrier_t *barrier, +     const pthread_barrierattr_t *attr, +     unsigned int count) +{ +  struct pthread_barrier *ibarrier; + +  if (__builtin_expect (count == 0, 0)) +    return EINVAL; + +  if (attr != NULL) +    { +      struct pthread_barrierattr *iattr; + +      iattr = (struct pthread_barrierattr *) attr; + +      if (iattr->pshared != PTHREAD_PROCESS_PRIVATE +	  && __builtin_expect (iattr->pshared != PTHREAD_PROCESS_SHARED, 0)) +	/* Invalid attribute.  */ +	return EINVAL; +    } + +  ibarrier = (struct pthread_barrier *) barrier; + +  /* Initialize the individual fields.  */ +  ibarrier->lock = LLL_LOCK_INITIALIZER; +  ibarrier->left = count; +  ibarrier->init_count = count; +  ibarrier->curr_event = 0; + +  return 0; +} | 
