xref: /dragonfly/contrib/gcc-8.0/libgomp/barrier.c (revision 38fd1498)
1*38fd1498Szrj /* Copyright (C) 2005-2018 Free Software Foundation, Inc.
2*38fd1498Szrj    Contributed by Richard Henderson <rth@redhat.com>.
3*38fd1498Szrj 
4*38fd1498Szrj    This file is part of the GNU Offloading and Multi Processing Library
5*38fd1498Szrj    (libgomp).
6*38fd1498Szrj 
7*38fd1498Szrj    Libgomp is free software; you can redistribute it and/or modify it
8*38fd1498Szrj    under the terms of the GNU General Public License as published by
9*38fd1498Szrj    the Free Software Foundation; either version 3, or (at your option)
10*38fd1498Szrj    any later version.
11*38fd1498Szrj 
12*38fd1498Szrj    Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
13*38fd1498Szrj    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14*38fd1498Szrj    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
15*38fd1498Szrj    more details.
16*38fd1498Szrj 
17*38fd1498Szrj    Under Section 7 of GPL version 3, you are granted additional
18*38fd1498Szrj    permissions described in the GCC Runtime Library Exception, version
19*38fd1498Szrj    3.1, as published by the Free Software Foundation.
20*38fd1498Szrj 
21*38fd1498Szrj    You should have received a copy of the GNU General Public License and
22*38fd1498Szrj    a copy of the GCC Runtime Library Exception along with this program;
23*38fd1498Szrj    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
24*38fd1498Szrj    <http://www.gnu.org/licenses/>.  */
25*38fd1498Szrj 
26*38fd1498Szrj /* This file handles the BARRIER construct.  */
27*38fd1498Szrj 
28*38fd1498Szrj #include "libgomp.h"
29*38fd1498Szrj 
30*38fd1498Szrj 
31*38fd1498Szrj void
GOMP_barrier(void)32*38fd1498Szrj GOMP_barrier (void)
33*38fd1498Szrj {
34*38fd1498Szrj   struct gomp_thread *thr = gomp_thread ();
35*38fd1498Szrj   struct gomp_team *team = thr->ts.team;
36*38fd1498Szrj 
37*38fd1498Szrj   /* It is legal to have orphaned barriers.  */
38*38fd1498Szrj   if (team == NULL)
39*38fd1498Szrj     return;
40*38fd1498Szrj 
41*38fd1498Szrj   gomp_team_barrier_wait (&team->barrier);
42*38fd1498Szrj }
43*38fd1498Szrj 
44*38fd1498Szrj bool
GOMP_barrier_cancel(void)45*38fd1498Szrj GOMP_barrier_cancel (void)
46*38fd1498Szrj {
47*38fd1498Szrj   struct gomp_thread *thr = gomp_thread ();
48*38fd1498Szrj   struct gomp_team *team = thr->ts.team;
49*38fd1498Szrj 
50*38fd1498Szrj   /* The compiler transforms to barrier_cancel when it sees that the
51*38fd1498Szrj      barrier is within a construct that can cancel.  Thus we should
52*38fd1498Szrj      never have an orphaned cancellable barrier.  */
53*38fd1498Szrj   return gomp_team_barrier_wait_cancel (&team->barrier);
54*38fd1498Szrj }
55