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GSCodeBuffer.cpp
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GSCodeBuffer.cpp
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/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2021 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 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 PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "PrecompiledHeader.h"
#include "GSCodeBuffer.h"
#include "GS.h"
GSCodeBuffer::GSCodeBuffer(size_t blocksize)
: m_blocksize(blocksize)
, m_pos(0)
, m_reserved(0)
, m_ptr(NULL)
{
}
GSCodeBuffer::~GSCodeBuffer()
{
for (auto buffer : m_buffers)
{
vmfree(buffer, m_blocksize);
}
}
void* GSCodeBuffer::GetBuffer(size_t size)
{
pxAssert(size < m_blocksize);
pxAssert(m_reserved == 0);
size = (size + 15) & ~15;
if (m_ptr == NULL || m_pos + size > m_blocksize)
{
m_ptr = (u8*)vmalloc(m_blocksize, true);
m_pos = 0;
m_buffers.push_back(m_ptr);
}
u8* ptr = &m_ptr[m_pos];
m_reserved = size;
return ptr;
}
void GSCodeBuffer::ReleaseBuffer(size_t size)
{
pxAssert(size <= m_reserved);
m_pos = ((m_pos + size) + 15) & ~15;
pxAssert(m_pos < m_blocksize);
m_reserved = 0;
}