mirror of https://github.com/PCSX2/pcsx2.git
71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
/*
|
|
* 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, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
*
|
|
*/
|
|
|
|
#include "StdAfx.h"
|
|
#include "GSCodeBuffer.h"
|
|
|
|
GSCodeBuffer::GSCodeBuffer(size_t blocksize)
|
|
: m_ptr(NULL)
|
|
, m_blocksize(blocksize)
|
|
, m_pos(0)
|
|
, m_reserved(0)
|
|
{
|
|
}
|
|
|
|
GSCodeBuffer::~GSCodeBuffer()
|
|
{
|
|
while(!m_buffers.IsEmpty())
|
|
{
|
|
VirtualFree(m_buffers.RemoveHead(), 0, MEM_RELEASE);
|
|
}
|
|
}
|
|
|
|
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 = (BYTE*)VirtualAlloc(NULL, m_blocksize, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
|
|
|
|
m_pos = 0;
|
|
|
|
m_buffers.AddTail(m_ptr);
|
|
}
|
|
|
|
BYTE* 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;
|
|
|
|
m_reserved = 0;
|
|
} |