1 /*
   2  * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 extern "C" {
  26   void _Prefetch_read (void *loc, intx interval);
  27   void _Prefetch_write(void *loc, intx interval);
  28 }
  29 
  30 inline void Prefetch::read (void *loc, intx interval) {
  31 #ifdef AMD64
  32   _Prefetch_read(loc, interval);
  33 #endif // AMD64
  34 }
  35 
  36 // Use of this method should be gated by VM_Version::has_prefetchw.
  37 inline void Prefetch::write(void *loc, intx interval) {
  38 #ifdef AMD64
  39   _Prefetch_write(loc, interval);
  40 #endif // AMD64
  41 }