block_manager Class Reference [Block management layer]

Block manager class. More...

#include <mng.h>

Collaboration diagram for block_manager:

List of all members.

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.
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.
template<unsigned BLK_SIZE>
void	delete_block (const BID< BLK_SIZE > &bid)
	Deallocates a block.
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)

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Detailed Description

Block manager class.

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

Remarks:

is a singleton

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