Block Management Layer

Group of classes which help controlling external memory space, managing disks, and allocating and deallocating blocks of external storage. More...

Modules
	Allocation Functors
	Block Scheduling Sublayer
	Internals

Namespaces
	foxxll::mng_local
	Block Manager Internals.

Classes
class	BID< Size >
class	BID< 0 >
	Specialization of block identifier class (BID) for variable size block size. More...
class	block_manager
	Block manager class. More...
class	config
class	disk_block_allocator
	This class manages allocation of blocks onto a single disk. More...
class	disk_config
class	typed_block< RawSize, Type, NRef, MetaInfoType >

Typedefs
template<size_t BlockSize>
using	BIDArray = tlx::simple_vector< BID< BlockSize > >

Functions
template<size_t BlockSize>
void	delete_block (const BID< BlockSize > &bid)
template<typename BIDIterator >
void	delete_blocks (const BIDIterator &bid_begin, const BIDIterator &bid_end)
template<typename DiskAssignFunctor , typename BIDIterator >
void	new_blocks (const DiskAssignFunctor &functor, BIDIterator bid_begin, BIDIterator bid_end, size_t alloc_offset=0)
	Allocates new blocks. More...
template<size_t BlockSize>
std::ostream &	operator<< (std::ostream &s, const BID< BlockSize > &bid)

Detailed Description

Group of classes which help controlling external memory space, managing disks, and allocating and deallocating blocks of external storage.

Typedef Documentation

BIDArray

using BIDArray = tlx::simple_vector<BID<BlockSize> >

Definition at line 198 of file bid.hpp.

Function Documentation

delete_block()

void delete_block

(

const BID< BlockSize > &

bid

)

Deallocates a block.

Parameters

bid	block identifier

Definition at line 251 of file block_manager.hpp.

References block_manager::block_allocators_, block_manager::current_allocation_, block_manager::disk_files_, BID< Size >::is_managed(), block_manager::mutex_, BID< Size >::offset, BID< Size >::size, BID< Size >::storage, TLX_LOG, TLX_LOGC, BID< Size >::valid(), and block_manager::verbose_block_life_cycle.

Referenced by block_manager::delete_blocks(), swappable_block< ValueType, BlockSize >::free_external_block(), and block_manager::new_block().

delete_blocks()

void delete_blocks	(	const BIDIterator &	bid_begin,
		const BIDIterator &	bid_end
	)

Deallocates blocks.

Deallocates blocks in the range [ bid_begin, bid_end)

Parameters

bid_begin	iterator object of bid_iterator concept
bid_end	iterator object of bid_iterator concept

Definition at line 271 of file block_manager.hpp.

References block_manager::delete_block().

Referenced by block_manager::new_block().

new_blocks()

void new_blocks	(	const DiskAssignFunctor &	functor,
		BIDIterator	bid_begin,
		BIDIterator	bid_end,
		size_t	alloc_offset = 0
	)

Allocates new blocks.

Allocates new blocks according to the strategy given by functor and stores block identifiers to the range [ bid_begin, bid_end) Allocation will be lined up with previous partial allocations of alloc_offset blocks. For BID<0> allocations, the objects' size field must be initialized.

Parameters

functor	object of model of allocation_strategy concept
bid_begin	bidirectional BID iterator object
bid_end	bidirectional BID iterator object
alloc_offset	advance for functor to line up partial allocations

Definition at line 165 of file block_manager.hpp.

References block_manager::block_allocators_, block_manager::current_allocation_, block_manager::disk_files_, SimpleVector< ValueType, Mode >::fill(), max(), block_manager::maximum_allocation_, block_manager::mutex_, block_manager::ndisks_, SimpleVector< ValueType, Mode >::resize(), SimpleVector< ValueType, Mode >::size(), TLX_LOGC, block_manager::total_allocation_, and block_manager::verbose_block_life_cycle.

Referenced by block_manager::new_block().

operator<<()

std::ostream& foxxll::operator<<	(	std::ostream &	s,
		const BID< BlockSize > &	bid
	)

Prints a BID to an ostream using the following format

*  [0x12345678|0]0x00100000/0x00010000
*  [file ptr|file id]offset/size
* 

Note

Can be used to replace the obsolete FMT_BID macro

Definition at line 176 of file bid.hpp.