blender/intern/container/CTR_HashedPtr.h
2012-11-08 06:46:10 +00:00

63 lines
1.6 KiB
C++

/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* 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,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* 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 *****
*
*/
/** \file container/CTR_HashedPtr.h
* \ingroup ctr
*/
#ifndef __CTR_HASHEDPTR_H__
#define __CTR_HASHEDPTR_H__
#include <stdlib.h>
inline unsigned int CTR_Hash(void *inDWord)
{
size_t key = (size_t)inDWord;
return (unsigned int)(key ^ (key >> 4));
}
class CTR_HashedPtr
{
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;
}
};
#endif /* __CTR_HASHEDPTR_H__ */