src/hotspot/share/gc/z/zHash.inline.hpp

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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 * published by the Free Software Foundation.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file:
 *
 *  (C) 2009 by Remo Dentato (rdentato@gmail.com)
 *
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice,
 *       this list of conditions and the following disclaimer in the documentation
 *       and/or other materials provided with the distribution.
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * http://opensource.org/licenses/bsd-license.php
 */

#ifndef SHARE_GC_Z_ZHASH_INLINE_HPP
#define SHARE_GC_Z_ZHASH_INLINE_HPP

#include "gc/z/zHash.hpp"

#include "gc/z/zAddress.inline.hpp"

inline uint32_t ZHash::uint32_to_uint32(uint32_t key) {
  key = ~key + (key << 15);
  key = key ^ (key >> 12);
  key = key + (key << 2);
  key = key ^ (key >> 4);
  key = key * 2057;
  key = key ^ (key >> 16);
  return key;
}

inline uint32_t ZHash::address_to_uint32(uintptr_t key) {
  return uint32_to_uint32((uint32_t)(key >> 3));
}

inline uint32_t ZHash::offset_to_uint32(zoffset key) {
  return address_to_uint32(untype(key));
}

#endif // SHARE_GC_Z_ZHASH_INLINE_HPP