libitm/config/alpha/cacheline.h

   1 /* Copyright (C) 2009-2015 Free Software Foundation, Inc.
   2    Contributed by Richard Henderson <rth@redhat.com>.
   3
   4    This file is part of the GNU Transactional Memory Library (libitm).
   5
   6    Libitm is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
  12    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  13    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14    more details.
  15
  16    Under Section 7 of GPL version 3, you are granted additional
  17    permissions described in the GCC Runtime Library Exception, version
  18    3.1, as published by the Free Software Foundation.
  19
  20    You should have received a copy of the GNU General Public License and
  21    a copy of the GCC Runtime Library Exception along with this program;
  22    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23    <http://www.gnu.org/licenses/>.  */
  24
  25 #ifndef LIBITM_ALPHA_CACHELINE_H
  26 #define LIBITM_ALPHA_CACHELINE_H 1
  27
  28 // A cacheline is the smallest unit with which locks are associated.
  29 // The current implementation of the _ITM_[RW] barriers assumes that
  30 // all data types can fit (aligned) within a cachline, which means
  31 // in practice sizeof(complex long double) is the smallest cacheline size.
  32 // It ought to be small enough for efficient manipulation of the
  33 // modification mask, below.
  34 #define CACHELINE_SIZE 64
  35
  36 #include "config/generic/cacheline.h"
  37
  38 #endif // LIBITM_ALPHA_CACHELINE_H