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/*
* Copyright (C) 2007-2009 Gabest
* http://www.gabest.org
*
* 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, 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "stdafx.h"
#include "GSCodeBuffer.h"
GSCodeBuffer::GSCodeBuffer(size_t blocksize)
: m_blocksize(blocksize)
, m_pos(0)
, m_reserved(0)
, m_ptr(NULL)
{
}
GSCodeBuffer::~GSCodeBuffer()
{
for(list<void*>::iterator i = m_buffers.begin(); i != m_buffers.end(); i++)
{
vmfree(*i, m_blocksize);
}
}
void* GSCodeBuffer::GetBuffer(size_t size)
{
ASSERT(size < m_blocksize);
ASSERT(m_reserved == 0);
size = (size + 15) & ~15;
if(m_ptr == NULL || m_pos + size > m_blocksize)
{
m_ptr = (uint8*)vmalloc(m_blocksize, true);
m_pos = 0;
m_buffers.push_back(m_ptr);
}
uint8* ptr = &m_ptr[m_pos];
m_reserved = size;
return ptr;
}
void GSCodeBuffer::ReleaseBuffer(size_t size)
{
ASSERT(size <= m_reserved);
m_pos = ((m_pos + size) + 15) & ~15;
ASSERT(m_pos < m_blocksize);
m_reserved = 0;
}
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