diff options
Diffstat (limited to 'gcc-4.4.3/libgomp/config/posix/bar.c')
| -rw-r--r-- | gcc-4.4.3/libgomp/config/posix/bar.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/gcc-4.4.3/libgomp/config/posix/bar.c b/gcc-4.4.3/libgomp/config/posix/bar.c deleted file mode 100644 index 0101d1f25..000000000 --- a/gcc-4.4.3/libgomp/config/posix/bar.c +++ /dev/null @@ -1,178 +0,0 @@ -/* Copyright (C) 2005, 2008, 2009 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 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 General Public License for - more details. - - 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. - - 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 is the default implementation of a barrier synchronization mechanism - for libgomp. This type is private to the library. Note that we rely on - being able to adjust the barrier count while threads are blocked, so the - POSIX pthread_barrier_t won't work. */ - -#include "libgomp.h" - - -void -gomp_barrier_init (gomp_barrier_t *bar, unsigned count) -{ - gomp_mutex_init (&bar->mutex1); -#ifndef HAVE_SYNC_BUILTINS - gomp_mutex_init (&bar->mutex2); -#endif - gomp_sem_init (&bar->sem1, 0); - gomp_sem_init (&bar->sem2, 0); - bar->total = count; - bar->arrived = 0; - bar->generation = 0; -} - -void -gomp_barrier_destroy (gomp_barrier_t *bar) -{ - /* Before destroying, make sure all threads have left the barrier. */ - gomp_mutex_lock (&bar->mutex1); - gomp_mutex_unlock (&bar->mutex1); - - gomp_mutex_destroy (&bar->mutex1); -#ifndef HAVE_SYNC_BUILTINS - gomp_mutex_destroy (&bar->mutex2); -#endif - gomp_sem_destroy (&bar->sem1); - gomp_sem_destroy (&bar->sem2); -} - -void -gomp_barrier_reinit (gomp_barrier_t *bar, unsigned count) -{ - gomp_mutex_lock (&bar->mutex1); - bar->total = count; - gomp_mutex_unlock (&bar->mutex1); -} - -void -gomp_barrier_wait_end (gomp_barrier_t *bar, gomp_barrier_state_t state) -{ - unsigned int n; - - if (state & 1) - { - n = --bar->arrived; - if (n > 0) - { - do - gomp_sem_post (&bar->sem1); - while (--n != 0); - gomp_sem_wait (&bar->sem2); - } - gomp_mutex_unlock (&bar->mutex1); - } - else - { - gomp_mutex_unlock (&bar->mutex1); - gomp_sem_wait (&bar->sem1); - -#ifdef HAVE_SYNC_BUILTINS - n = __sync_add_and_fetch (&bar->arrived, -1); -#else - gomp_mutex_lock (&bar->mutex2); - n = --bar->arrived; - gomp_mutex_unlock (&bar->mutex2); -#endif - - if (n == 0) - gomp_sem_post (&bar->sem2); - } -} - -void -gomp_barrier_wait (gomp_barrier_t *barrier) -{ - gomp_barrier_wait_end (barrier, gomp_barrier_wait_start (barrier)); -} - -void -gomp_team_barrier_wait_end (gomp_barrier_t *bar, gomp_barrier_state_t state) -{ - unsigned int n; - - if (state & 1) - { - n = --bar->arrived; - struct gomp_thread *thr = gomp_thread (); - struct gomp_team *team = thr->ts.team; - - if (team->task_count) - { - gomp_barrier_handle_tasks (state); - if (n > 0) - gomp_sem_wait (&bar->sem2); - gomp_mutex_unlock (&bar->mutex1); - return; - } - - bar->generation = state + 3; - if (n > 0) - { - do - gomp_sem_post (&bar->sem1); - while (--n != 0); - gomp_sem_wait (&bar->sem2); - } - gomp_mutex_unlock (&bar->mutex1); - } - else - { - gomp_mutex_unlock (&bar->mutex1); - do - { - gomp_sem_wait (&bar->sem1); - if (bar->generation & 1) - gomp_barrier_handle_tasks (state); - } - while (bar->generation != state + 4); - -#ifdef HAVE_SYNC_BUILTINS - n = __sync_add_and_fetch (&bar->arrived, -1); -#else - gomp_mutex_lock (&bar->mutex2); - n = --bar->arrived; - gomp_mutex_unlock (&bar->mutex2); -#endif - - if (n == 0) - gomp_sem_post (&bar->sem2); - } -} - -void -gomp_team_barrier_wait (gomp_barrier_t *barrier) -{ - gomp_team_barrier_wait_end (barrier, gomp_barrier_wait_start (barrier)); -} - -void -gomp_team_barrier_wake (gomp_barrier_t *bar, int count) -{ - if (count == 0) - count = bar->total - 1; - while (count-- > 0) - gomp_sem_post (&bar->sem1); -} |