diff options
Diffstat (limited to 'gcc-4.4.3/libgomp/config/linux/ia64/mutex.h')
-rw-r--r-- | gcc-4.4.3/libgomp/config/linux/ia64/mutex.h | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/gcc-4.4.3/libgomp/config/linux/ia64/mutex.h b/gcc-4.4.3/libgomp/config/linux/ia64/mutex.h deleted file mode 100644 index 6e294059b..000000000 --- a/gcc-4.4.3/libgomp/config/linux/ia64/mutex.h +++ /dev/null @@ -1,65 +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. */ - -#ifndef GOMP_MUTEX_H -#define GOMP_MUTEX_H 1 - -typedef int gomp_mutex_t; - -#define GOMP_MUTEX_INIT_0 1 - -static inline void gomp_mutex_init (gomp_mutex_t *mutex) -{ - *mutex = 0; -} - -extern void gomp_mutex_lock_slow (gomp_mutex_t *mutex); -static inline void gomp_mutex_lock (gomp_mutex_t *mutex) -{ - if (!__sync_bool_compare_and_swap (mutex, 0, 1)) - gomp_mutex_lock_slow (mutex); -} - -extern void gomp_mutex_unlock_slow (gomp_mutex_t *mutex); - -/* IA64 needs a __sync_synchronize call before __sync_lock_test_and_set - because __sync_lock_test_and_set is not a full memory fence. */ -static inline void gomp_mutex_unlock (gomp_mutex_t *mutex) -{ - int val; - __sync_synchronize (); - val = __sync_lock_test_and_set (mutex, 0); - if (__builtin_expect (val > 1, 0)) - gomp_mutex_unlock_slow (mutex); -} - -static inline void gomp_mutex_destroy (gomp_mutex_t *mutex) -{ -} - -#endif /* GOMP_MUTEX_H */ |