diff options
Diffstat (limited to 'REORG.TODO/nptl/pthread_barrier_init.c')
-rw-r--r-- | REORG.TODO/nptl/pthread_barrier_init.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/REORG.TODO/nptl/pthread_barrier_init.c b/REORG.TODO/nptl/pthread_barrier_init.c new file mode 100644 index 0000000000..9c851fbb32 --- /dev/null +++ b/REORG.TODO/nptl/pthread_barrier_init.c @@ -0,0 +1,60 @@ +/* Copyright (C) 2002-2017 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 <futex-internal.h> +#include <kernel-features.h> + + +static const struct pthread_barrierattr default_barrierattr = + { + .pshared = PTHREAD_PROCESS_PRIVATE + }; + + +int +__pthread_barrier_init (pthread_barrier_t *barrier, + const pthread_barrierattr_t *attr, unsigned int count) +{ + struct pthread_barrier *ibarrier; + + /* XXX EINVAL is not specified by POSIX as a possible error code for COUNT + being too large. See pthread_barrier_wait for the reason for the + comparison with BARRIER_IN_THRESHOLD. */ + if (__glibc_unlikely (count == 0 || count >= BARRIER_IN_THRESHOLD)) + return EINVAL; + + const struct pthread_barrierattr *iattr + = (attr != NULL + ? (struct pthread_barrierattr *) attr + : &default_barrierattr); + + ibarrier = (struct pthread_barrier *) barrier; + + /* Initialize the individual fields. */ + ibarrier->in = 0; + ibarrier->out = 0; + ibarrier->count = count; + ibarrier->current_round = 0; + ibarrier->shared = (iattr->pshared == PTHREAD_PROCESS_PRIVATE + ? FUTEX_PRIVATE : FUTEX_SHARED); + + return 0; +} +weak_alias (__pthread_barrier_init, pthread_barrier_init) |