You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-11-03 17:13:17 +03:00
121 lines
3.8 KiB
C++
121 lines
3.8 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
|
|
|
|
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; version 2 of
|
|
the License.
|
|
|
|
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 this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
/******************************************************************************************
|
|
* $Id: we_freemgr.h 33 2006-07-19 17:09:27Z mthomas $
|
|
*
|
|
******************************************************************************************/
|
|
/** @file */
|
|
|
|
#ifndef _WE_FREEMGR_H_
|
|
#define _WE_FREEMGR_H_
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <we_dbfileop.h>
|
|
#include <we_index.h>
|
|
|
|
/** Namespace WriteEngine */
|
|
namespace WriteEngine
|
|
{
|
|
|
|
/** Class FreeMgr */
|
|
class FreeMgr : public DbFileOp
|
|
{
|
|
public:
|
|
/**
|
|
* @brief Constructor
|
|
*/
|
|
FreeMgr();
|
|
|
|
/**
|
|
* @brief Default Destructor
|
|
*/
|
|
~FreeMgr();
|
|
|
|
/**
|
|
* @brief init free chains in a new index file
|
|
*/
|
|
const int init( CommBlock &cb, const int freemgrType );
|
|
|
|
/**
|
|
* @brief Init free chains in a new file or an existing file
|
|
* The start block is an FBO or an LBID depending on whether we are using BRM
|
|
**/
|
|
const int init( CommBlock &cb, DataBlock* blockZero, const int freemgrType , const IdxTreeGroupType chainType, const int startBlock, const int numberBlocks );
|
|
|
|
/**
|
|
* @brief find a free segment and return ptr
|
|
*/
|
|
const int assignSegment( CommBlock &cb, DataBlock* blockZero, const int freemgr_type, const IdxTreeGroupType segmentType, IdxEmptyListEntry* assignPtr ) ;
|
|
|
|
/**
|
|
* @brief put a free segment back into chain
|
|
*/
|
|
const int releaseSegment( CommBlock &cb, DataBlock* blockZero, const int freemgr_type, const IdxTreeGroupType segmentType, IdxEmptyListEntry* assignPtr ) ;
|
|
|
|
/**
|
|
* @brief Map an FBO to LBID
|
|
*/
|
|
const uint64_t mapLBID( CommBlock &cb, const uint64_t fbo, int &rc );
|
|
|
|
/**
|
|
* extendFreespace - ran out of space in one of the chains?
|
|
* Add blocks via calls to BRM extent mgr and fseek the file to the end
|
|
**/
|
|
const int extendFreespace( CommBlock &cb, DataBlock* blockZero, const int freemgr_type );
|
|
|
|
|
|
//private:
|
|
|
|
/**
|
|
* @brief Create sub block zero for use by free manager
|
|
*/
|
|
const int initBlockzero( DataBlock* blockZero);
|
|
|
|
/**
|
|
* @brief Handle release of sub-blocks separately - sometimes a sub-block contains list entries and sometimes it is a list entry
|
|
*/
|
|
|
|
const int releaseSubblock( CommBlock &cb, WriteEngine::DataBlock*, int, WriteEngine::IdxEmptyListEntry*) ;
|
|
|
|
/**
|
|
* @brief Handle assignment of sub-blocks separately - sometimes a sub-block contains list entries and sometimes it is a list entry
|
|
*/
|
|
|
|
const int assignSubblock( CommBlock &cb, WriteEngine::DataBlock*, int, WriteEngine::IdxEmptyListEntry*);
|
|
|
|
/**
|
|
* Blank out the entries in the structure
|
|
**/
|
|
const void nullPtr( WriteEngine::IdxEmptyListEntry* assignPtr ) const;
|
|
|
|
const void printMemSubBlock( DataBlock* curBlock, const int sbid );
|
|
|
|
inline const int calcPtrOffset( const int position ) const
|
|
{ return 1+position; }
|
|
|
|
inline const int calcStatOffset( const int position ) const
|
|
{ return 8+position; }
|
|
|
|
int initType;// decide which algorithm to use to init the chains
|
|
int allowExtend; // allow file to be extended
|
|
};
|
|
|
|
} //end of namespace
|
|
#endif // _WE_FREEMGR_H_
|