/* Copyright (C) 2002-2014 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, see <http://www.gnu.org/licenses/>. */ #include <errno.h> #include "pthreadP.h" #include <lowlevellock.h> int pthread_barrier_destroy (barrier) pthread_barrier_t *barrier; { struct pthread_barrier *ibarrier; int result = EBUSY; ibarrier = (struct pthread_barrier *) barrier; lll_lock (ibarrier->lock, ibarrier->private ^ FUTEX_PRIVATE_FLAG); if (__builtin_expect (ibarrier->left == ibarrier->init_count, 1)) /* The barrier is not used anymore. */ result = 0; else /* Still used, return with an error. */ lll_unlock (ibarrier->lock, ibarrier->private ^ FUTEX_PRIVATE_FLAG); return result; }