blender/intern/container/CTR_HashedPtr.h

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
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*
* This program 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 2
* of the License, or (at your option) any later version.
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*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
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*
*/
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/** \file container/CTR_HashedPtr.h
* \ingroup ctr
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*/
#ifndef CTR_HASHEDPTR_H
#define CTR_HASHEDPTR_H
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#include <stdlib.h>
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inline unsigned int CTR_Hash(void *inDWord)
{
size_t key = (size_t)inDWord;
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return (unsigned int)(key ^ (key >> 4));
}
class CTR_HashedPtr
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{
void* m_valptr;
public:
CTR_HashedPtr(void* val) : m_valptr(val) {};
unsigned int hash() const { return CTR_Hash(m_valptr);};
inline friend bool operator ==(const CTR_HashedPtr & rhs, const CTR_HashedPtr & lhs) { return rhs.m_valptr == lhs.m_valptr;};
void *getValue() const { return m_valptr; }
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};
#endif //CTR_HASHEDPTR_H