mirror of
https://github.com/openmoh/openmohaa.git
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79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
/*
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===========================================================================
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Copyright (C) 2015 the OpenMoHAA team
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This file is part of OpenMoHAA source code.
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OpenMoHAA source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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OpenMoHAA source code is distributed in the hope that it will be
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useful, 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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You should have received a copy of the GNU General Public License
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along with OpenMoHAA source code; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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// mem_tempalloc.cpp: Fast temporary memory manager
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#include <mem_tempalloc.h>
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#ifdef GAME_DLL
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#include "g_local.h"
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#define MEM_TempAllocate(x) gi.Malloc(x)
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#define MEM_TempFree(x) gi.Free(x)
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#else
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#include "qcommon.h"
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#define MEM_TempAllocate(x) Z_Malloc(x)
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#define MEM_TempFree(x) Z_Free(x)
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#endif
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MEM_TempAlloc::MEM_TempAlloc()
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{
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m_CurrentMemoryBlock = nullptr;
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}
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void *MEM_TempAlloc::Alloc( size_t len )
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{
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unsigned char *prev_block = m_CurrentMemoryBlock;
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unsigned char *result;
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if( m_CurrentMemoryBlock && m_CurrentMemoryPos + len <= 65536 )
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{
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result = m_CurrentMemoryBlock + m_CurrentMemoryPos + sizeof( unsigned char * );
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m_CurrentMemoryPos += len;
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}
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else
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{
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m_CurrentMemoryPos = len;
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if( len < 65536 )
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len = 65536;
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m_CurrentMemoryBlock = ( unsigned char * )MEM_TempAllocate( len + sizeof( unsigned char * ) );
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*( unsigned char ** )m_CurrentMemoryBlock = prev_block;
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result = m_CurrentMemoryBlock + sizeof( unsigned char * );
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}
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return result;
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}
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void MEM_TempAlloc::FreeAll( void )
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{
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unsigned char *prev_block;
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while( m_CurrentMemoryBlock )
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{
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prev_block = *( unsigned char ** )m_CurrentMemoryBlock;
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MEM_TempFree( m_CurrentMemoryBlock );
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m_CurrentMemoryBlock = prev_block;
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}
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}
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