mirror of
https://github.com/libretro/scummvm.git
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78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef TONY_MPAL_MEMORY
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#define TONY_MPAL_MEMORY
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#include "common/scummsys.h"
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#include "common/list.h"
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namespace Tony {
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namespace MPAL {
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typedef void *MpalHandle;
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struct MemoryItem {
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uint32 _id;
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uint32 _size;
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int _lockCount;
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byte _data[1];
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// Casting for access to data
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operator void *() { return &_data[0]; }
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};
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class MemoryManager {
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private:
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static MemoryItem *getItem(MpalHandle handle);
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public:
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static MpalHandle allocate(uint32 size, uint flags);
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static void *alloc(uint32 size, uint flags);
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static void freeBlock(MpalHandle handle);
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static void destroyItem(MpalHandle handle);
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static uint32 getSize(MpalHandle handle);
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static byte *lockItem(MpalHandle handle);
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static void unlockItem(MpalHandle handle);
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};
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// defines
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#define globalAlloc(flags, size) MemoryManager::alloc(size, flags)
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#define globalAllocate(flags, size) MemoryManager::allocate(size, flags)
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#define globalFree(handle) MemoryManager::freeBlock(handle)
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#define globalDestroy(handle) MemoryManager::destroyItem(handle)
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#define globalLock(handle) MemoryManager::lockItem(handle)
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#define globalUnlock(handle) MemoryManager::unlockItem(handle)
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#define globalSize(handle) MemoryManager::getSize(handle)
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#define GMEM_FIXED 1
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#define GMEM_MOVEABLE 2
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#define GMEM_ZEROINIT 4
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const uint32 BLOCK_ID = 0x12345678;
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} // end of namespace MPAL
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} // end of namespace Tony
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#endif
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