BufferedBlockManager Class Reference
[BlockManagers]

#include <BufferedBlockManager.h>

Inheritance diagram for BufferedBlockManager:

Collaboration diagram for BufferedBlockManager:

Detailed Description

The BufferedBlockManager provides the BlockManager, using a FileBlockManager. It provides a thread for background loading of file blocks in response to explicit prefetchBlock() requests and in advance of the actual getBlock() requests for block data.

Definition at line 55 of file BufferedBlockManager.h.


Public Member Functions
virtual void	prefetchBlock (uint64_t index)
	suggestion, request the block to be prepared for future getting
virtual int	flush ()
	flush storage, e.g. to disk
virtual std::string	getBlock (uint64_t index)
	get the block at the given index
virtual size_t	setBlock (uint64_t index, const std::string &buffer)
	set the block at the given index
virtual int	open (const std::string &p, const char *mode)
	open the block manager. The path may be used by some to open a file with a given mode
virtual int	close ()
	close the block manager, flushing to disk and cleaning up state
virtual bool	isOpen () const
	return whether the block manager is open
virtual const std::string &	getPath () const
	return the path, if any, of the storage backing
virtual std::string	getFileName () const
	return the filename (without path)
virtual size_t	getBlockSize () const
	return the block size
virtual void	setBlockSize (size_t s)
	set the block size
virtual uint64_t	getBlockCount () const
	return the number of blocks
virtual uint64_t	getSize () const
	return the size in bytes
Static Public Attributes
static const uint	DEFAULT_BUFFER_CAPACITY = 256
	buffer size in blocks

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