diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/libgomp/config/linux/bar.c')
-rw-r--r-- | gcc-4.2.1-5666.3/libgomp/config/linux/bar.c | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/gcc-4.2.1-5666.3/libgomp/config/linux/bar.c b/gcc-4.2.1-5666.3/libgomp/config/linux/bar.c deleted file mode 100644 index 5c4f32e6f..000000000 --- a/gcc-4.2.1-5666.3/libgomp/config/linux/bar.c +++ /dev/null @@ -1,64 +0,0 @@ -/* Copyright (C) 2005 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. - - 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 - 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. */ - -/* 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. */ - -/* This is a Linux specific implementation of a barrier synchronization - mechanism for libgomp. This type is private to the library. This - implementation uses atomic instructions and the futex syscall. */ - -#include "libgomp.h" -#include "futex.h" -#include <limits.h> - - -void -gomp_barrier_wait_end (gomp_barrier_t *bar, bool last) -{ - if (last) - { - bar->generation++; - futex_wake (&bar->generation, INT_MAX); - } - else - { - unsigned int generation = bar->generation; - - gomp_mutex_unlock (&bar->mutex); - - do - futex_wait (&bar->generation, generation); - while (bar->generation == generation); - } - - if (__sync_add_and_fetch (&bar->arrived, -1) == 0) - gomp_mutex_unlock (&bar->mutex); -} - -void -gomp_barrier_wait (gomp_barrier_t *barrier) -{ - gomp_barrier_wait_end (barrier, gomp_barrier_wait_start (barrier)); -} |