keepass::detail::MappedFile Class Reference

Read-only memory mapping of a file. More...

#include <mapped_file.hh>

Public Member Functions
	MappedFile (const std::string &path)
	Opens and maps the file at path.
	~MappedFile ()
	Unmaps the file and releases all handles.
	MappedFile (const MappedFile &)=delete
MappedFile &	operator= (const MappedFile &)=delete
	MappedFile (MappedFile &&)=delete
MappedFile &	operator= (MappedFile &&)=delete
const char *	data () const noexcept
	Returns a pointer to the first mapped byte (nullptr for an empty file).
std::size_t	size () const noexcept
	Returns the size of the mapping in bytes.
bool	empty () const noexcept
	Returns whether the file is empty.

Detailed Description

Read-only memory mapping of a file.

On POSIX systems the file is mapped with mmap; on Windows a read-only file mapping is created with CreateFileMapping/MapViewOfFile. The mapping is released when the object is destroyed. The file must not be truncated while the mapping is alive (the operating system may deliver SIGBUS/raise an exception on access to the missing pages).

Constructor & Destructor Documentation

MappedFile()

keepass::detail::MappedFile::MappedFile ( const std::string &  path )

explicit

Opens and maps the file at path.

Exceptions

FileNotFoundError	if the path does not exist.
IoError	if the file cannot be opened or mapped.

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

• mapped_file.hh