diff options
Diffstat (limited to 'nptl/pthread_barrier_init.c')
-rw-r--r-- | nptl/pthread_barrier_init.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/nptl/pthread_barrier_init.c b/nptl/pthread_barrier_init.c new file mode 100644 index 0000000000..19e82fa38d --- /dev/null +++ b/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 (barrier, attr, count) + 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; +} |