joedb::Posix_File Class Reference

#include <joedb/journal/Posix_File.h>

Inheritance diagram for joedb::Posix_File:

Collaboration diagram for joedb::Posix_File:

Public Member Functions
	Posix_File (int fd, Open_Mode mode)
	Posix_File (const char *file_name, Open_Mode mode)
	Posix_File (const std::string &file_name, Open_Mode mode)
int64_t	get_size () const override
	Get the size of the file, or -1 if it is unknown.
size_t	pread (char *buffer, size_t size, int64_t offset) const override
	Read a range of bytes.
void	pwrite (const char *buffer, size_t size, int64_t offset) override
	Write a range of bytes. Extend file size if necessary.
void	sync () override
	Write data durably (including file-size change).
void	shared_lock (int64_t start, int64_t size) override
	Lock a range of bytes for reading (prevents writes, not reads).
void	exclusive_lock (int64_t start, int64_t size) override
	Lock a range of bytes for writing (prevents both writes and reads).
void	unlock (int64_t start, int64_t size) noexcept override
	Remove a lock. The range should match the range of a corresponding lock.
Public Member Functions inherited from joedb::Abstract_File
	Abstract_File (Open_Mode mode)
bool	is_shared () const noexcept
bool	is_readonly () const noexcept
Open_Mode	get_mode () const noexcept
void	full_pread (char *data, size_t size, int64_t offset) const
	Fill the buffer, or throw if the end of the file is reached.
virtual void	datasync ()
	Write data durably (no file-size change).
void	exclusive_lock_tail ()
void	unlock_tail () noexcept
void	exclusive_lock_head ()
void	shared_lock_head ()
void	unlock_head () noexcept
std::string	read_blob (Blob blob, int64_t max_size=std::numeric_limits< int64_t >::max()) const
virtual void	copy_to (Abstract_File &destination, int64_t start, int64_t size) const
virtual bool	equal_to (const Abstract_File &destination, int64_t from, int64_t until) const
void	copy_to (Abstract_File &destination) const
virtual	~Abstract_File ()=default

Static Public Attributes
static constexpr bool	lockable = true
static constexpr bool	has_broken_posix_locking = true

Additional Inherited Members
Static Public Member Functions inherited from joedb::Abstract_File
static void	reading_past_end_of_file ()
Protected Member Functions inherited from joedb::Abstract_File
void	make_readonly ()
void	make_writable ()
Static Protected Attributes inherited from joedb::Abstract_File
static constexpr int64_t	last_position = (1ULL << 63) - 1

Detailed Description

Definition at line 35 of file Posix_File.h.

Constructor & Destructor Documentation

Posix_File() [1/3]

joedb::Posix_File::Posix_File ( int fd, Open_Mode mode )

inline

Definition at line 54 of file Posix_File.h.

Posix_File() [2/3]

joedb::Posix_File::Posix_File	(	const char *	file_name,
		Open_Mode	mode )

Definition at line 203 of file Posix_File.cpp.

Posix_File() [3/3]

joedb::Posix_File::Posix_File ( const std::string & file_name, Open_Mode mode )

inline

Definition at line 62 of file Posix_File.h.

Member Function Documentation

exclusive_lock()

void joedb::Posix_File::exclusive_lock ( int64_t start, int64_t size )

overridevirtual

Reimplemented from joedb::Abstract_File.

Definition at line 74 of file Posix_File.cpp.

get_size()

int64_t joedb::Posix_File::get_size ( ) const

overridevirtual

Reimplemented from joedb::Abstract_File.

Definition at line 225 of file Posix_File.cpp.

pread()

size_t joedb::Posix_File::pread ( char * data, size_t size, int64_t offset ) const

overridevirtual

The returned value may be less than size, even if the end of the file is not reached. 0 is returned if the end of the file is reached.

Reimplemented from joedb::Abstract_File.

Definition at line 89 of file Posix_File.cpp.

pwrite()

void joedb::Posix_File::pwrite ( const char * data, size_t size, int64_t offset )

overridevirtual

Reimplemented from joedb::Abstract_File.

Definition at line 101 of file Posix_File.cpp.

shared_lock()

void joedb::Posix_File::shared_lock ( int64_t start, int64_t size )

overridevirtual

Reimplemented from joedb::Abstract_File.

Definition at line 66 of file Posix_File.cpp.

sync()

void joedb::Posix_File::sync ( )

overridevirtual

Reimplemented from joedb::Abstract_File.

Definition at line 135 of file Posix_File.cpp.

unlock()

void joedb::Posix_File::unlock ( int64_t start, int64_t size )

overridevirtualnoexcept

Reimplemented from joedb::Abstract_File.

Definition at line 82 of file Posix_File.cpp.

Member Data Documentation

has_broken_posix_locking

bool joedb::Posix_File::has_broken_posix_locking = true

staticconstexpr

Definition at line 49 of file Posix_File.h.

lockable

bool joedb::Posix_File::lockable = true

staticconstexpr

Definition at line 47 of file Posix_File.h.

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

• /home/rcoulom/repos/joedb/src/joedb/journal/Posix_File.h
• /home/rcoulom/repos/joedb/src/joedb/journal/Posix_File.cpp