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-rw-r--r--REORG.TODO/nptl/pthread_barrier_init.c60
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
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+++ b/REORG.TODO/nptl/pthread_barrier_init.c
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+/* 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)