diff options
Diffstat (limited to 'gcc-4.4.3/libgomp/config/linux/mutex.c')
-rw-r--r-- | gcc-4.4.3/libgomp/config/linux/mutex.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/gcc-4.4.3/libgomp/config/linux/mutex.c b/gcc-4.4.3/libgomp/config/linux/mutex.c deleted file mode 100644 index 3ca37c19f..000000000 --- a/gcc-4.4.3/libgomp/config/linux/mutex.c +++ /dev/null @@ -1,50 +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 a Linux specific implementation of a mutex synchronization - mechanism for libgomp. This type is private to the library. This - implementation uses atomic instructions and the futex syscall. */ - -#include "wait.h" - -long int gomp_futex_wake = FUTEX_WAKE | FUTEX_PRIVATE_FLAG; -long int gomp_futex_wait = FUTEX_WAIT | FUTEX_PRIVATE_FLAG; - -void -gomp_mutex_lock_slow (gomp_mutex_t *mutex) -{ - do - { - int oldval = __sync_val_compare_and_swap (mutex, 1, 2); - if (oldval != 0) - do_wait (mutex, 2); - } - while (!__sync_bool_compare_and_swap (mutex, 0, 2)); -} - -void -gomp_mutex_unlock_slow (gomp_mutex_t *mutex) -{ - futex_wake (mutex, 1); -} |