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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.
*
*
*/
#ifndef TONY_MPAL_MEMORY
#define TONY_MPAL_MEMORY
#include "common/scummsys.h"
#include "common/list.h"
namespace Tony {
namespace MPAL {
typedef void *MpalHandle;
struct MemoryItem {
uint32 _id;
uint32 _size;
int _lockCount;
byte _data[1];
// Casting for access to data
operator void *() { return &_data[0]; }
};
class MemoryManager {
private:
static MemoryItem *getItem(MpalHandle handle);
public:
static MpalHandle allocate(uint32 size, uint flags);
static void *alloc(uint32 size, uint flags);
static void freeBlock(MpalHandle handle);
static void destroyItem(MpalHandle handle);
static uint32 getSize(MpalHandle handle);
static byte *lockItem(MpalHandle handle);
static void unlockItem(MpalHandle handle);
};
// defines
#define globalAlloc(flags, size) MemoryManager::alloc(size, flags)
#define globalAllocate(flags, size) MemoryManager::allocate(size, flags)
#define globalFree(handle) MemoryManager::freeBlock(handle)
#define globalDestroy(handle) MemoryManager::destroyItem(handle)
#define globalLock(handle) MemoryManager::lockItem(handle)
#define globalUnlock(handle) MemoryManager::unlockItem(handle)
#define globalSize(handle) MemoryManager::getSize(handle)
#define GMEM_FIXED 1
#define GMEM_MOVEABLE 2
#define GMEM_ZEROINIT 4
} // end of namespace MPAL
} // end of namespace Tony
#endif
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