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Diffstat (limited to 'libitm/config/generic/cacheline.h')
-rw-r--r-- | libitm/config/generic/cacheline.h | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/libitm/config/generic/cacheline.h b/libitm/config/generic/cacheline.h deleted file mode 100644 index 69408a8358f..00000000000 --- a/libitm/config/generic/cacheline.h +++ /dev/null @@ -1,58 +0,0 @@ -/* Copyright (C) 2009-2015 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_CACHELINE_H -#define LIBITM_CACHELINE_H 1 - -namespace GTM HIDDEN { - -// 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. -#ifndef CACHELINE_SIZE -# define CACHELINE_SIZE 32 -#endif - -// A gtm_cacheline_mask stores a modified bit for every modified byte -// in the cacheline with which it is associated. -typedef sized_integral<CACHELINE_SIZE / 8>::type gtm_cacheline_mask; - -union gtm_cacheline -{ - // Byte access to the cacheline. - unsigned char b[CACHELINE_SIZE] __attribute__((aligned(CACHELINE_SIZE))); - - // Larger sized access to the cacheline. - uint16_t u16[CACHELINE_SIZE / sizeof(uint16_t)]; - uint32_t u32[CACHELINE_SIZE / sizeof(uint32_t)]; - uint64_t u64[CACHELINE_SIZE / sizeof(uint64_t)]; - gtm_word w[CACHELINE_SIZE / sizeof(gtm_word)]; -}; - -} // namespace GTM - -#endif // LIBITM_CACHELINE_H |