BlockManager Class Reference
[BlockManagers]

#include <BlockManager.h>

Inheritance diagram for BlockManager:

Detailed Description

The base class (pure virtual) of a block manager interface for referencing files or segments as a set of blocks.

Subclasses may provide additional functionality, such as filesystem access, encryption, etc.

Definition at line 58 of file BlockManager.h.


Public Member Functions
virtual const std::string &	getPath () const =0
	return the path, if any, of the storage backing
virtual std::string	getFileName () const =0
	return the filename (without path)
virtual std::string	getBlock (uint64_t index)=0
	get the block at the given index
virtual size_t	setBlock (uint64_t index, const std::string &buffer)=0
	set the block at the given index
virtual size_t	getBlockSize () const
	return the block size
virtual void	setBlockSize (size_t s)
	set the block size
virtual void	prefetchBlock (uint64_t index)
	suggestion, request the block to be prepared for future getting
virtual uint32_t	getMinimumInterested () const
	Huh?
virtual uint32_t	getMaximumInterested () const
	Huh?
virtual uint64_t	getBlockCount () const
	return the number of blocks
virtual uint64_t	getSize () const
	return the size in bytes
virtual int	open (const std::string &path, const char *mode)=0
	open the block manager. The path may be used by some to open a file with a given mode
virtual bool	isOpen () const =0
	return whether the block manager is open
virtual int	close ()=0
	close the block manager, flushing to disk and cleaning up state
virtual int	flush ()=0
	flush storage, e.g. to disk
Static Public Attributes
static const size_t	DEFAULT_BLOCK_SIZE = 32768
	the default block size

virtual uint32_t BlockManager::getMinimumInterested ( ) const [inline, virtual]

Huh?

Definition at line 69 of file BlockManager.h.

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