diff options
Diffstat (limited to 'gcc-4.4.3/libgomp/config/linux/affinity.c')
-rw-r--r-- | gcc-4.4.3/libgomp/config/linux/affinity.c | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/gcc-4.4.3/libgomp/config/linux/affinity.c b/gcc-4.4.3/libgomp/config/linux/affinity.c deleted file mode 100644 index 40519e889..000000000 --- a/gcc-4.4.3/libgomp/config/linux/affinity.c +++ /dev/null @@ -1,92 +0,0 @@ -/* Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc. - Contributed by Jakub Jelinek <jakub@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 a Linux specific implementation of a CPU affinity setting. */ - -#ifndef _GNU_SOURCE -#define _GNU_SOURCE 1 -#endif -#include "libgomp.h" -#include <sched.h> -#include <stdlib.h> -#include <unistd.h> - -#ifdef HAVE_PTHREAD_AFFINITY_NP - -static unsigned int affinity_counter; - -void -gomp_init_affinity (void) -{ - cpu_set_t cpuset; - size_t idx, widx; - - if (pthread_getaffinity_np (pthread_self (), sizeof (cpuset), &cpuset)) - { - gomp_error ("could not get CPU affinity set"); - free (gomp_cpu_affinity); - gomp_cpu_affinity = NULL; - gomp_cpu_affinity_len = 0; - return; - } - - for (widx = idx = 0; idx < gomp_cpu_affinity_len; idx++) - if (gomp_cpu_affinity[idx] < CPU_SETSIZE - && CPU_ISSET (gomp_cpu_affinity[idx], &cpuset)) - gomp_cpu_affinity[widx++] = gomp_cpu_affinity[idx]; - - if (widx == 0) - { - gomp_error ("no CPUs left for affinity setting"); - free (gomp_cpu_affinity); - gomp_cpu_affinity = NULL; - gomp_cpu_affinity_len = 0; - return; - } - - gomp_cpu_affinity_len = widx; - CPU_ZERO (&cpuset); - CPU_SET (gomp_cpu_affinity[0], &cpuset); - pthread_setaffinity_np (pthread_self (), sizeof (cpuset), &cpuset); - affinity_counter = 1; -} - -void -gomp_init_thread_affinity (pthread_attr_t *attr) -{ - unsigned int cpu; - cpu_set_t cpuset; - - cpu = __sync_fetch_and_add (&affinity_counter, 1); - cpu %= gomp_cpu_affinity_len; - CPU_ZERO (&cpuset); - CPU_SET (gomp_cpu_affinity[cpu], &cpuset); - pthread_attr_setaffinity_np (attr, sizeof (cpu_set_t), &cpuset); -} - -#else - -#include "../posix/affinity.c" - -#endif |