cUnbufferedFile Class Reference

#include <tools.h>

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)

Static Public Member Functions
static cUnbufferedFile *	Create (const char *FileName, int Flags, mode_t Mode=DEFFILEMODE)

Private Member Functions
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 504 of file tools.h.

Constructor & Destructor Documentation

cUnbufferedFile()

cUnbufferedFile::cUnbufferedFile

(

void

)

Definition at line 1818 of file tools.c.

~cUnbufferedFile()

cUnbufferedFile::~cUnbufferedFile

(

)

Definition at line 1823 of file tools.c.

Member Function Documentation

Close()

int cUnbufferedFile::Close

(

void

)

Definition at line 1846 of file tools.c.

Referenced by cFileName::Close().

Create()

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

static

Definition at line 1998 of file tools.c.

References Open().

Referenced by cFileName::Open(), and cVideoDirectory::OpenVideoFile().

FadviseDrop()

int cUnbufferedFile::FadviseDrop ( off_t  Offset, off_t  Len  )

private

Definition at line 1875 of file tools.c.

References FADVGRAN.

Open()

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

Definition at line 1828 of file tools.c.

References KILOBYTE.

Referenced by Create().

Read()

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

Definition at line 1889 of file tools.c.

References max(), min(), READCHUNK, and safe_read().

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

Seek()

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

Definition at line 1881 of file tools.c.

Referenced by cFileName::SetOffset().

SetReadAhead()

void cUnbufferedFile::SetReadAhead

(

size_t

ra

)

Definition at line 1870 of file tools.c.

Referenced by cCuttingThread::LoadFrame().

Write()

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

Definition at line 1947 of file tools.c.

References max(), MEGABYTE, min(), safe_write(), and WRITE_BUFFER.

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

Member Data Documentation

ahead

off_t cUnbufferedFile::ahead

private

Definition at line 512 of file tools.h.

begin

off_t cUnbufferedFile::begin

private

Definition at line 510 of file tools.h.

cachedend

off_t cUnbufferedFile::cachedend

private

Definition at line 509 of file tools.h.

cachedstart

off_t cUnbufferedFile::cachedstart

private

Definition at line 508 of file tools.h.

curpos

off_t cUnbufferedFile::curpos

private

Definition at line 507 of file tools.h.

fd

int cUnbufferedFile::fd

private

Definition at line 506 of file tools.h.

lastpos

off_t cUnbufferedFile::lastpos

private

Definition at line 511 of file tools.h.

readahead

size_t cUnbufferedFile::readahead

private

Definition at line 513 of file tools.h.

totwritten

size_t cUnbufferedFile::totwritten

private

Definition at line 515 of file tools.h.

written

size_t cUnbufferedFile::written

private

Definition at line 514 of file tools.h.

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

• tools.h
• tools.c