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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.
*
*
*/
#include "common/algorithm.h"
#include "common/textconsole.h"
#include "tony/mpal/memory.h"
namespace Tony {
namespace MPAL {
/****************************************************************************\
* MemoryItem methods
\****************************************************************************/
/**
* Constructor
* @param Data sizee
*/
MemoryItem::MemoryItem(uint32 size) {
_size = size;
_buffer = (size == 0) ? NULL : new byte[size];
}
/**
* Destructor
*/
MemoryItem::~MemoryItem() {
delete[] _buffer;
}
/**
* Returns a pointer to the resource
*/
MemoryItem::operator void *() {
return DataPointer();
}
/****************************************************************************\
* MemoryManager methods
\****************************************************************************/
MemoryManager::MemoryManager() {
}
/**
* Destructor
*/
MemoryManager::~MemoryManager() {
Common::List<MemoryItem *>::iterator i;
for (i = _memoryBlocks.begin(); i != _memoryBlocks.end(); ++i) {
MemoryItem *item = *i;
delete item;
}
}
/**
* Allocates a new memory block
* @returns Returns a MemoryItem instance for the new block
*/
MemoryItem &MemoryManager::allocate(uint32 size, uint flags) {
MemoryItem *newItem = new MemoryItem(size);
if ((flags & GMEM_ZEROINIT) != 0) {
byte *dataP = (byte *)newItem->DataPointer();
Common::fill(dataP, dataP + size, 0);
}
_memoryBlocks.push_back(newItem);
return *newItem;
}
/**
* Allocates a new memory block and returns its data pointer
* @returns Data pointer to allocated block
*/
HGLOBAL MemoryManager::alloc(uint32 size, uint flags) {
MemoryItem &newItem = allocate(size, flags);
return (HGLOBAL)newItem.DataPointer();
}
/**
* Returns a reference to the MemoryItem for a gien byte pointer
* @param block Byte pointer
*/
MemoryItem &MemoryManager::getItem(HGLOBAL handle) {
Common::List<MemoryItem *>::iterator i;
for (i = _memoryBlocks.begin(); i != _memoryBlocks.end(); ++i) {
MemoryItem *item = *i;
if (item->DataPointer() == handle)
return *item;
}
error("Could not locate a memory block");
}
/**
* Square bracketes operator
* @param block Byte pointer
*/
MemoryItem &MemoryManager::operator[](HGLOBAL handle) {
return getItem(handle);
}
/**
* Returns a size of a memory block given its pointer
*/
uint32 MemoryManager::getSize(HGLOBAL handle) {
MemoryItem &item = getItem(handle);
return item.Size();
}
/**
* Erases a given item
*/
void MemoryManager::erase(MemoryItem *item) {
delete item;
_memoryBlocks.remove(item);
}
/**
* Erases a given item
*/
void MemoryManager::erase(HGLOBAL handle) {
MemoryItem &item = getItem(handle);
erase(&item);
}
/****************************************************************************\
* Stand-alone methods
\****************************************************************************/
void CopyMemory(void *dst, const void *first, int size) {
Common::copy((const byte *)first, (const byte *)first + size, (byte *)dst);
}
} // end of namespace MPAL
} // end of namespace Tony
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