vdr: cUnbufferedFile Class Reference

vdr 1.7.27

#include <tools.h>

List of all members.

Public Member Functions
	cUnbufferedFile (void)
	~cUnbufferedFile ()
int	Open (const char *FileName, int Flags, mode_t Mode=DEFFILEMODE)
int	Close (void)
void	SetReadAhead (size_t ra)
off_t	Seek (off_t Offset, int Whence)
ssize_t	Read (void *Data, size_t Size)
ssize_t	Write (const void *Data, size_t Size)
	cUnbufferedFile (void)
	~cUnbufferedFile ()
int	Open (const char *FileName, int Flags, mode_t Mode=DEFFILEMODE)
int	Close (void)
void	SetReadAhead (size_t ra)
off_t	Seek (off_t Offset, int Whence)
ssize_t	Read (void *Data, size_t Size)
ssize_t	Write (const void *Data, size_t Size)
Static Public Member Functions
static cUnbufferedFile *	Create (const char *FileName, int Flags, mode_t Mode=DEFFILEMODE)
static cUnbufferedFile *	Create (const char *FileName, int Flags, mode_t Mode=DEFFILEMODE)
Private Member Functions
int	FadviseDrop (off_t Offset, off_t Len)
int	FadviseDrop (off_t Offset, off_t Len)
Private Attributes
int	fd
off_t	curpos
off_t	cachedstart
off_t	cachedend
off_t	begin
off_t	lastpos
off_t	ahead
size_t	readahead
size_t	written
size_t	totwritten

Detailed Description

cUnbufferedFile is used for large files that are mainly written or read in a streaming manner, and thus should not be cached.

Definition at line 379 of file include/vdr/tools.h.

Constructor & Destructor Documentation

cUnbufferedFile::cUnbufferedFile ( void )

Definition at line 1562 of file tools.c.

References fd.

Referenced by Create().

cUnbufferedFile::~cUnbufferedFile ( )

Definition at line 1567 of file tools.c.

References Close().

cUnbufferedFile::cUnbufferedFile ( void )

cUnbufferedFile::~cUnbufferedFile ( )

Member Function Documentation

int cUnbufferedFile::Close ( void )

Definition at line 1590 of file tools.c.

References fd, and totwritten.

Referenced by CloseVideoFile(), Open(), and ~cUnbufferedFile().

int cUnbufferedFile::Close ( void )

static cUnbufferedFile* cUnbufferedFile::Create	(	const char *	FileName,
		int	Flags,
		mode_t	Mode = `DEFFILEMODE`
	)		`[static]`

cUnbufferedFile * cUnbufferedFile::Create	(	const char *	FileName,
		int	Flags,
		mode_t	Mode = `DEFFILEMODE`
	)		`[static]`

Definition at line 1742 of file tools.c.

References cUnbufferedFile(), and Open().

Referenced by cCopyingThread::Action(), cFileName::Open(), and OpenVideoFile().

int cUnbufferedFile::FadviseDrop	(	off_t	Offset,
		off_t	Len
	)		`[private]`

int cUnbufferedFile::FadviseDrop	(	off_t	Offset,
		off_t	Len
	)		`[private]`

Definition at line 1619 of file tools.c.

References FADVGRAN, and fd.

Referenced by Read().

int cUnbufferedFile::Open	(	const char *	FileName,
		int	Flags,
		mode_t	Mode = `DEFFILEMODE`
	)

Definition at line 1572 of file tools.c.

References ahead, begin, cachedend, cachedstart, Close(), curpos, fd, KILOBYTE, lastpos, readahead, totwritten, and written.

Referenced by Create().

int cUnbufferedFile::Open	(	const char *	FileName,
		int	Flags,
		mode_t	Mode = `DEFFILEMODE`
	)

ssize_t cUnbufferedFile::Read	(	void *	Data,
		size_t	Size
	)

Definition at line 1633 of file tools.c.

References ahead, cachedend, cachedstart, curpos, FadviseDrop(), fd, lastpos, max(), min(), readahead, READCHUNK, and safe_read().

Referenced by cCopyingThread::Action(), cNonBlockingFileReader::Action(), cRingBufferLinear::Read(), and ReadFrame().

ssize_t cUnbufferedFile::Read	(	void *	Data,
		size_t	Size
	)

off_t cUnbufferedFile::Seek	(	off_t	Offset,
		int	Whence
	)

off_t cUnbufferedFile::Seek	(	off_t	Offset,
		int	Whence
	)

Definition at line 1625 of file tools.c.

References curpos, and fd.

Referenced by cFileName::SetOffset().

void cUnbufferedFile::SetReadAhead ( size_t ra )

Definition at line 1614 of file tools.c.

References readahead.

Referenced by cCuttingThread::Action().

void cUnbufferedFile::SetReadAhead ( size_t ra )

ssize_t cUnbufferedFile::Write	(	const void *	Data,
		size_t	Size
	)

ssize_t cUnbufferedFile::Write	(	const void *	Data,
		size_t	Size
	)

Definition at line 1691 of file tools.c.

References begin, curpos, fd, lastpos, max(), MEGABYTE, min(), safe_write(), totwritten, WRITE_BUFFER, and written.

Referenced by cCuttingThread::Action(), cRecorder::Action(), and cCopyingThread::Action().

Member Data Documentation

off_t cUnbufferedFile::ahead [private]

Definition at line 387 of file include/vdr/tools.h.

Referenced by Open(), and Read().

off_t cUnbufferedFile::begin [private]

Definition at line 385 of file include/vdr/tools.h.

Referenced by Open(), and Write().

off_t cUnbufferedFile::cachedend [private]

Definition at line 384 of file include/vdr/tools.h.

Referenced by Open(), and Read().

off_t cUnbufferedFile::cachedstart [private]

Definition at line 383 of file include/vdr/tools.h.

Referenced by Open(), and Read().

off_t cUnbufferedFile::curpos [private]

Definition at line 382 of file include/vdr/tools.h.

Referenced by Open(), Read(), Seek(), and Write().

int cUnbufferedFile::fd [private]

Definition at line 381 of file include/vdr/tools.h.

Referenced by Close(), cUnbufferedFile(), FadviseDrop(), Open(), Read(), Seek(), and Write().

off_t cUnbufferedFile::lastpos [private]

Definition at line 386 of file include/vdr/tools.h.

Referenced by Open(), Read(), and Write().

size_t cUnbufferedFile::readahead [private]

Definition at line 388 of file include/vdr/tools.h.

Referenced by Open(), Read(), and SetReadAhead().

size_t cUnbufferedFile::totwritten [private]

Definition at line 390 of file include/vdr/tools.h.

Referenced by Close(), Open(), and Write().

size_t cUnbufferedFile::written [private]

Definition at line 389 of file include/vdr/tools.h.

Referenced by Open(), and Write().

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