mirror of
https://github.com/libretro/scummvm.git
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103 lines
2.7 KiB
C++
103 lines
2.7 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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* 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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* 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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* $URL$
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* $Id$
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*
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*/
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#include "lure/memory.h"
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#include "common/file.h"
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namespace Lure {
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MemoryBlock *Memory::allocate(uint32 size) {
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MemoryBlock *block = new MemoryBlock(size);
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return block;
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}
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MemoryBlock *Memory::duplicate(MemoryBlock *src) {
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MemoryBlock *block = new MemoryBlock(src);
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return block;
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}
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uint8 *Memory::alloc(uint32 size) {
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return (uint8 *) malloc(size);
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}
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void Memory::dealloc(void *block) {
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free(block);
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}
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/*--------------------------------------------------------------------------*/
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MemoryBlock::MemoryBlock(uint32 size1) {
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_data = (uint8 *) malloc(size1);
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if (!_data) error ("Failed allocating memory block");
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_size = size1;
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}
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MemoryBlock::MemoryBlock(MemoryBlock *src) {
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_size = src->size();
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_data = (uint8 *) malloc(_size);
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if (!_data) error ("Failed allocating memory block");
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memcpy(_data, src->data(), _size);
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}
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MemoryBlock::~MemoryBlock() {
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free(_data);
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}
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void MemoryBlock::empty() {
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::memset(_data, 0, _size);
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}
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void MemoryBlock::setBytes(int c, size_t startIndex, size_t num) {
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byte *p = _data + startIndex;
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::memset(p, c, num);
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}
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void MemoryBlock::copyFrom(MemoryBlock *src) {
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copyFrom(src, 0, 0, src->size());
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}
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void MemoryBlock::copyFrom(MemoryBlock *src, uint32 srcPos, uint32 destPos, uint32 srcLen) {
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if ((srcPos + srcLen > src->size()) || (destPos + srcLen > size()))
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error("Memory block overrun in block copy");
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uint8 *pDest = _data + destPos;
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uint8 *pSrc = src->data() + srcPos;
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memcpy(pDest, pSrc, srcLen);
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}
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void MemoryBlock::copyFrom(const byte *src, uint32 srcPos, uint32 destPos, uint32 srcLen) {
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byte *pDest = _data + destPos;
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const byte *pSrc = src + srcPos;
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memcpy(pDest, pSrc, srcLen);
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}
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void MemoryBlock::reallocate(uint32 size1) {
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_size = size1;
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_data = (byte *) realloc(_data, size1);
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if (!_data) error ("Failed reallocating memory block");
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}
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} // end of namespace Lure
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