block_manager Class Reference

Block manager class. More...

#include <mng.h>

Inherits singleton< block_manager >.

Public Member Functions
template<class DiskAssignFunctor , class BIDIteratorClass >
void	new_blocks (const DiskAssignFunctor &functor, BIDIteratorClass bidbegin, BIDIteratorClass bidend, unsigned_type offset=0)
	Allocates new blocks. More...
template<class BlockType , class DiskAssignFunctor , class BIDIteratorClass >
void	new_blocks (const unsigned_type nblocks, const DiskAssignFunctor &functor, BIDIteratorClass out, unsigned_type offset=0)
template<typename DiskAssignFunctor , unsigned BLK_SIZE>
void	new_block (const DiskAssignFunctor &functor, BID< BLK_SIZE > &bid, unsigned_type offset=0)
template<class BIDIteratorClass >
void	delete_blocks (const BIDIteratorClass &bidbegin, const BIDIteratorClass &bidend)
	Deallocates blocks. More...
template<unsigned BLK_SIZE>
void	delete_block (const BID< BLK_SIZE > &bid)
	Deallocates a block. More...
template<class BIDType , class DiskAssignFunctor , class OutputIterator >
void	new_blocks_int (const unsigned_type nblocks, const DiskAssignFunctor &functor, unsigned_type offset, OutputIterator out)

Protected Member Functions
template<class BIDType , class DiskAssignFunctor , class BIDIteratorClass >
void	new_blocks_int (const unsigned_type nblocks, const DiskAssignFunctor &functor, unsigned_type offset, BIDIteratorClass out)

Detailed Description

Block manager class.

Manages allocation and deallocation of blocks in multiple/single disk setting

Remarks

is a singleton

Member Function Documentation

template<typename DiskAssignFunctor , unsigned BLK_SIZE>

void block_manager::new_block ( const DiskAssignFunctor &  functor, BID< BLK_SIZE > &  bid, unsigned_type  offset = 0  )

inline

Allocates a new block according to the strategy given by functor and stores the block identifier to bid. Allocation will be lined up with previous partial allocations of offset blocks.

Parameters

functor	object of model of allocation_strategy concept
bid	BID to store the block identifier
offset	advance for functor to line up partial allocations

Referenced by ksort(), queue< ValTp, BlkSz, AllocStr, SzTp >::push(), and sort().

template<class DiskAssignFunctor , class BIDIteratorClass >

void block_manager::new_blocks ( const DiskAssignFunctor &  functor, BIDIteratorClass  bidbegin, BIDIteratorClass  bidend, unsigned_type  offset = 0  )

inline

Allocates new blocks.

Allocates new blocks according to the strategy given by functor and stores block identifiers to the range [ bidbegin, bidend) Allocation will be lined up with previous partial allocations of offset blocks.

Parameters

functor	object of model of allocation_strategy concept
bidbegin	bidirectional BID iterator object
bidend	bidirectional BID iterator object
offset	advance for functor to line up partial allocations

Referenced by stream::runs_creator< from_sorted_sequences< ValueType_ >, Cmp_, BlockSize_, AllocStr_ >::finish(), stream::runs_creator< use_push< ValueType_ >, Cmp_, BlockSize_, AllocStr_ >::push(), and stream::runs_creator< from_sorted_sequences< ValueType_ >, Cmp_, BlockSize_, AllocStr_ >::push().

template<class BlockType , class DiskAssignFunctor , class BIDIteratorClass >

void block_manager::new_blocks ( const unsigned_type  nblocks, const DiskAssignFunctor &  functor, BIDIteratorClass  out, unsigned_type  offset = 0  )

inline

Allocates new blocks according to the strategy given by functor and stores block identifiers to the output iterator out Allocation will be lined up with previous partial allocations of offset blocks.

Parameters

nblocks	the number of blocks to allocate
functor	object of model of allocation_strategy concept
out	iterator object of OutputIterator concept
offset	advance for functor to line up partial allocations

The BlockType template parameter defines the type of block to allocate

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The documentation for this class was generated from the following files:

• mng.h
• mng.cpp