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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
* $URL$
* $Id$
*
*/
#ifndef SWORD1_MEMMAN_H
#define SWORD1_MEMMAN_H
#include "common/scummsys.h"
namespace Sword1 {
struct MemHandle {
void *data;
uint32 size;
uint32 refCount;
uint16 cond;
MemHandle *next, *prev;
};
// mem conditions:
#define MEM_FREED 0
#define MEM_CAN_FREE 1
#define MEM_DONT_FREE 2
#ifdef PALMOS_MODE
#define MAX_ALLOC (3*1024*1024) // max amount of mem we want to alloc().
#else
#define MAX_ALLOC (6*1024*1024) // max amount of mem we want to alloc().
#endif
class MemMan {
public:
MemMan();
~MemMan();
void alloc(MemHandle *bsMem, uint32 pSize, uint16 pCond = MEM_DONT_FREE);
void setCondition(MemHandle *bsMem, uint16 pCond);
void freeNow(MemHandle *bsMem);
void initHandle(MemHandle *bsMem);
void flush();
private:
void addToFreeList(MemHandle *bsMem);
void removeFromFreeList(MemHandle *bsMem);
void checkMemoryUsage();
uint32 _alloced; //currently allocated memory
MemHandle *_memListFree;
MemHandle *_memListFreeEnd;
};
} // End of namespace Sword1
#endif //MEMMAN_H
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