diff options
Diffstat (limited to 'gcc-4.7/libitm/config/alpha/cacheline.h')
-rw-r--r-- | gcc-4.7/libitm/config/alpha/cacheline.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/gcc-4.7/libitm/config/alpha/cacheline.h b/gcc-4.7/libitm/config/alpha/cacheline.h new file mode 100644 index 000000000..611a1c9a2 --- /dev/null +++ b/gcc-4.7/libitm/config/alpha/cacheline.h @@ -0,0 +1,38 @@ +/* Copyright (C) 2009, 2011 Free Software Foundation, Inc. + Contributed by Richard Henderson <rth@redhat.com>. + + This file is part of the GNU Transactional Memory Library (libitm). + + Libitm 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 of the License, or + (at your option) any later version. + + Libitm 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/>. */ + +#ifndef LIBITM_ALPHA_CACHELINE_H +#define LIBITM_ALPHA_CACHELINE_H 1 + +// A cacheline is the smallest unit with which locks are associated. +// The current implementation of the _ITM_[RW] barriers assumes that +// all data types can fit (aligned) within a cachline, which means +// in practice sizeof(complex long double) is the smallest cacheline size. +// It ought to be small enough for efficient manipulation of the +// modification mask, below. +#define CACHELINE_SIZE 64 + +#include "config/generic/cacheline.h" + +#endif // LIBITM_ALPHA_CACHELINE_H |