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Ley0k 2016-03-27 11:49:47 +02:00
commit 09bed43f97
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code/qcommon/mem_tempalloc.cpp Normal file
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/*
===========================================================================
Copyright (C) 2015 the OpenMoHAA team
This file is part of OpenMoHAA source code.
OpenMoHAA source code 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 of the License,
or (at your option) any later version.
OpenMoHAA source code 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 OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
// mem_tempalloc.cpp: Fast temporary memory manager
#include <glb_local.h>
#include <mem_tempalloc.h>
MEM_TempAlloc::MEM_TempAlloc()
{
m_CurrentMemoryBlock = NULL;
}
void *MEM_TempAlloc::Alloc( size_t len )
{
unsigned char *prev_block = m_CurrentMemoryBlock;
unsigned char *result;
if( m_CurrentMemoryBlock && m_CurrentMemoryPos + len <= 65536 )
{
result = m_CurrentMemoryBlock + m_CurrentMemoryPos + sizeof( unsigned char * );
m_CurrentMemoryPos += len;
}
else
{
m_CurrentMemoryPos = len;
if( len < 65536 )
len = 65536;
m_CurrentMemoryBlock = ( unsigned char * )glbs.Malloc( len + sizeof( unsigned char * ) );
*( unsigned char ** )m_CurrentMemoryBlock = prev_block;
result = m_CurrentMemoryBlock + sizeof( unsigned char * );
}
return result;
}
void MEM_TempAlloc::FreeAll( void )
{
unsigned char *prev_block;
while( m_CurrentMemoryBlock )
{
prev_block = *( unsigned char ** )m_CurrentMemoryBlock;
glbs.Free( m_CurrentMemoryBlock );
m_CurrentMemoryBlock = prev_block;
}
}