-/* Copyright (C) 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2005-2014 Free Software Foundation, Inc.
Contributed by Richard Henderson <rth@redhat.com>.
This file is part of the GNU OpenMP Library (libgomp).
Libgomp 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.
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
Libgomp 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
+ FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
- You should have received a copy of the GNU Lesser General Public License
- along with libgomp; see the file COPYING.LIB. If not, write to the
- Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- MA 02110-1301, USA. */
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
-/* As a special exception, if you link this library with other files, some
- of which are compiled with GCC, to produce an executable, this library
- does not by itself cause the resulting executable to be covered by the
- GNU General Public License. This exception does not however invalidate
- any other reasons why the executable file might be covered by the GNU
- General Public License. */
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
/* This file handles the SINGLE construct. */
bool
GOMP_single_start (void)
{
+#ifdef HAVE_SYNC_BUILTINS
+ struct gomp_thread *thr = gomp_thread ();
+ struct gomp_team *team = thr->ts.team;
+ unsigned long single_count;
+
+ if (__builtin_expect (team == NULL, 0))
+ return true;
+
+ single_count = thr->ts.single_count++;
+ return __sync_bool_compare_and_swap (&team->single_count, single_count,
+ single_count + 1L);
+#else
bool ret = gomp_work_share_start (false);
- gomp_mutex_unlock (&gomp_thread ()->ts.work_share->lock);
+ if (ret)
+ gomp_work_share_init_done ();
gomp_work_share_end_nowait ();
return ret;
+#endif
}
/* This routine is called when first encountering a SINGLE construct that
void *ret;
first = gomp_work_share_start (false);
- gomp_mutex_unlock (&thr->ts.work_share->lock);
if (first)
- ret = NULL;
+ {
+ gomp_work_share_init_done ();
+ ret = NULL;
+ }
else
{
- gomp_barrier_wait (&thr->ts.team->barrier);
+ gomp_team_barrier_wait (&thr->ts.team->barrier);
ret = thr->ts.work_share->copyprivate;
gomp_work_share_end_nowait ();
if (team != NULL)
{
thr->ts.work_share->copyprivate = data;
- gomp_barrier_wait (&team->barrier);
+ gomp_team_barrier_wait (&team->barrier);
}
gomp_work_share_end_nowait ();