Memory mapped file handling. More...

Public Member Functions
	mmapping (const std::string &fn=std::string())
	Constructor; if a file name is given, opens the file, but does not map() it.

	mmapping (const mmapping &other)
	Copy contructor; if the other file is open, opens it, if the other file is mapped, maps it and leaves it open if the other mapping's file is open; file size and offset and size of the mapped range are copied.

	~mmapping ()
	Destructor; unmap and close file.

mmapping &	operator= (const mmapping &other)
	Assignment; see copy constructor.

void	open_file ()
	Open the current file; only stat()s if the file size is not available previously.

void	open_file (const std::string &fn)
	Close the current file, open another one.

void	close_file ()
	Close the current file (but do not unmap).

bool	has_file () const

std::streamsize	get_filesize () const
	Get the size of the last opened file.

const std::string &	get_filename () const
	Get the name of the last opened file.

bool	is_file_open () const

void	map (const std::streamoff ofs, const std::streamsize size=0)
	Map with a new offset and possibly size.

void	map ()
	Map with the currently set offset and size.

void	unmap ()
	Unmap.

bool	is_mapped () const
	Check if we're currently mapped.

const char *	begin () const
	Pointer to the start of the mapped range. More...

const char *	end () const
	Pointer to the end of the mapped range. More...

Detailed Description

Memory mapped file handling.

Memory mapping that is designed to be copyable.

Member Function Documentation

const char* shore::mmapping::begin ( ) const

Pointer to the start of the mapped range.

The range returned is exactly the one requested by map(), internal page alignment adjustments for mmap() are hidden.

const char* shore::mmapping::end ( ) const

Pointer to the end of the mapped range.

The range returned is exactly the one requested by map(), internal page alignment adjustments for mmap() are hidden.

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