1 /*
   2  * Copyright (c) 2015, 2017, 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 #ifndef SHARE_GC_Z_ZHASH_INLINE_HPP
  25 #define SHARE_GC_Z_ZHASH_INLINE_HPP
  26 
  27 #include "gc/z/zHash.hpp"
  28 
  29 inline uint32_t ZHash::uint32_to_uint32(uint32_t key) {
  30   key = ~key + (key << 15);
  31   key = key ^ (key >> 12);
  32   key = key + (key << 2);
  33   key = key ^ (key >> 4);
  34   key = key * 2057;
  35   key = key ^ (key >> 16);
  36   return key;
  37 }
  38 
  39 inline uint32_t ZHash::address_to_uint32(uintptr_t key) {
  40   return uint32_to_uint32((uint32_t)(key >> 3));
  41 }
  42 
  43 #endif // SHARE_GC_Z_ZHASH_INLINE_HPP