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Leonid Fedorov
2022-01-21 16:43:49 +00:00
parent 6b6411229f
commit 04752ec546
1376 changed files with 393460 additions and 412662 deletions
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141
writeengine/index/we_freemgr.h
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@ -16,9 +16,9 @@
MA 02110-1301, USA. */
/******************************************************************************************
* $Id: we_freemgr.h 33 2006-07-19 17:09:27Z mthomas $
*
******************************************************************************************/
* $Id: we_freemgr.h 33 2006-07-19 17:09:27Z mthomas $
*
******************************************************************************************/
/** @file */
#pragma once
@ -31,92 +31,95 @@
/** Namespace WriteEngine */
namespace WriteEngine
{
/** Class FreeMgr */
class FreeMgr : public DbFileOp
{
public:
/**
* @brief Constructor
*/
FreeMgr();
public:
/**
* @brief Constructor
*/
FreeMgr();
/**
* @brief Default Destructor
*/
~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 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 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 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 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 );
/**
* @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 );
/**
* 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:
//private:
/**
* @brief Create sub block zero for use by free manager
*/
const int initBlockzero(DataBlock* blockZero);
/**
* @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
*/
/**
* @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*);
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
*/
/**
* @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*);
const int assignSubblock( CommBlock& cb, WriteEngine::DataBlock*, int, WriteEngine::IdxEmptyListEntry*);
/**
* Blank out the entries in the structure
**/
const void nullPtr(WriteEngine::IdxEmptyListEntry* assignPtr) const;
/**
* Blank out the entries in the structure
**/
const void nullPtr( WriteEngine::IdxEmptyListEntry* assignPtr ) const;
const void printMemSubBlock(DataBlock* curBlock, const int sbid);
const void printMemSubBlock( DataBlock* curBlock, const int sbid );
inline const int calcPtrOffset(const int position) const
{
return 1 + position;
}
inline const int calcPtrOffset( const int position ) const
{
return 1 + position;
}
inline const int calcStatOffset(const int position) const
{
return 8 + 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
int initType; // decide which algorithm to use to init the chains
int allowExtend; // allow file to be extended
};
} //end of namespace
} // namespace WriteEngine