mirror of https://github.com/PCSX2/pcsx2.git
74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
/*
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* Copyright (C) 2007-2009 Gabest
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* http://www.gabest.org
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*
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* This Program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* 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 GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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*/
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#include "StdAfx.h"
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#include "GSCodeBuffer.h"
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GSCodeBuffer::GSCodeBuffer(size_t blocksize)
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: m_ptr(NULL)
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, m_blocksize(blocksize)
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, m_pos(0)
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, m_reserved(0)
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{
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}
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GSCodeBuffer::~GSCodeBuffer()
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{
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for(list<void*>::iterator i = m_buffers.begin(); i != m_buffers.end(); i++)
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{
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VirtualFree(*i, 0, MEM_RELEASE);
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}
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}
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void* GSCodeBuffer::GetBuffer(size_t size)
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{
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ASSERT(size < m_blocksize);
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ASSERT(m_reserved == 0);
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size = (size + 15) & ~15;
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if(m_ptr == NULL || m_pos + size > m_blocksize)
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{
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m_ptr = (uint8*)VirtualAlloc(NULL, m_blocksize, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
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m_pos = 0;
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m_buffers.push_back(m_ptr);
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}
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uint8* ptr = &m_ptr[m_pos];
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m_reserved = size;
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return ptr;
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}
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void GSCodeBuffer::ReleaseBuffer(size_t size)
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{
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ASSERT(size <= m_reserved);
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m_pos = ((m_pos + size) + 15) & ~15;
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ASSERT(m_pos < m_blocksize);
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m_reserved = 0;
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}
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