Dv::Thread::logstream::LogFilter Class Reference

Implements Filter interface for filterstreambuf. More...

Inheritance diagram for Dv::Thread::logstream::LogFilter:

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Collaboration diagram for Dv::Thread::logstream::LogFilter:

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List of all members.

Public Member Functions
	LogFilter (const std::string &path, const std::string &prefix)
	Constructor.
	LogFilter (std::ostream &stream, const std::string &prefix)
	Constructor, stream is managed by client.
	~LogFilter ()
	Destructor.
int	put (int c)
	Output a character.
int	get ()
	Input a character, always fails.
int	sync ()
	Flush buffers.
void	close ()
	This is a noop.
void	prefix (const std::string &prefix)
	Set prefix that will be printed at the start of each output line.
const std::string &	prefix () const
std::ios::iostate	state () const
Private Attributes
bool	owner_
	True if stream was created from a path.
std::map< pthread_t, std::string >	buffers_
	Each running thread has its own buffer.
std::string	prefix_
std::ostream *	stream_
bool	lastnl_

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Detailed Description

Implements Filter interface for filterstreambuf.

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Constructor & Destructor Documentation

Dv::Thread::logstream::LogFilter::LogFilter	(	const std::string &	path,
		const std::string &	prefix
	)

Constructor.

Parameters:

	path	name of file on which log will be written.
	prefix,:	each output line will start with the current date, the id of the writing thread and the prefix string

See also:

Dv::Util::Date

Dv::Thread::logstream::LogFilter::LogFilter	(	std::ostream &	stream,
		const std::string &	prefix
	)

Constructor, stream is managed by client.

Parameters:

	stream	open output stream on which log will be written.
	prefix,:	each output line will start with the current date, the id of the writing thread and the prefix string

See also:

Dv::Util::Date

Dv::Thread::logstream::LogFilter::~LogFilter

(

)

Destructor.

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Member Function Documentation

int Dv::Thread::logstream::LogFilter::put

(

int

c

)

Output a character.

Parameters:

c

char to output

Returns:

c is all went well, EOF otherwise.

int Dv::Thread::logstream::LogFilter::get

(

)

[inline]

Input a character, always fails.

Returns:

EOF, this is an output-only filter.

int Dv::Thread::logstream::LogFilter::sync

(

)

Flush buffers.

Returns:

0 if ok, EOF otherwise

void Dv::Thread::logstream::LogFilter::close

(

)

[inline]

This is a noop.

void Dv::Thread::logstream::LogFilter::prefix

(

const std::string &

prefix

)

[inline]

Set prefix that will be printed at the start of each output line.

Parameters:

prefix

to use.

References prefix_.

Referenced by Dv::Thread::logstream::prefix().

const std::string& Dv::Thread::logstream::LogFilter::prefix

(

)

const [inline]

Returns:

prefix that is used on output

See also:

prefix(const std::string&)

References prefix_.

std::ios::iostate Dv::Thread::logstream::LogFilter::state

(

)

const

Returns:

iostate of underlying stream

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Member Data Documentation

bool Dv::Thread::logstream::LogFilter::owner_ [private]

True if stream was created from a path.

Reimplemented from Dv::Thread::Monitor.

std::map<pthread_t,std::string> Dv::Thread::logstream::LogFilter::buffers_ [private]

Each running thread has its own buffer.

std::string Dv::Thread::logstream::LogFilter::prefix_ [private]

Referenced by prefix().

std::ostream* Dv::Thread::logstream::LogFilter::stream_ [private]

bool Dv::Thread::logstream::LogFilter::lastnl_ [private]

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

• logstream.h