class logbuf

A streambuffer, logging via syslog More...

List of all Methods
Definition	`#include <lib/log.h>`
Inherits	streambuf

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Public Methods

logbuf (int level, int fd = -1)
void setOn (bool on)
void setLevel (int level)
bool on ()
int level ()
int overflow (int c = EOF)

Detailed Description

A streambuffer, logging via syslog

logbuf can be used, if you want to use syslog for logging but don't want to change all your nice C++-style output statements in your code.

Here is an example showing the usage of logbuf:


	openlog("myDaemon", LOG_CONS|LOG_PID, LOG_DAEMON);
	logbuf ebuf(LOG_ERR, 2);
	ostream lerr(&ebuf);

	... some code ...

	lerr << "Whoops, got an error" << endl;

The second optional argument of the constructor can be used to switch the output destination between syslog and some file. If it is omitted or set to -1, logging can be switched on or off. The initial state is on.

logbuf (int level, int fd = -1)

Constructs a new instance.

Parameters:

level The log level for this instance. see syslog(3) for symbolic names to use.

fd An optional file descriptor to use if switched off.

void setOn (bool on)

Switches loggin on or off.

Parameters:

on The desired state.

void setLevel (int level)

Modifies the loglevel of this instance.

Parameters:

level The new loglevel.

bool on ()

Retrieve the current state.

Returns: The current state.

int level ()

Retrieves the current loglevel.

Returns: The current loglevel.

int overflow (int c = EOF)

Called by the associated ostream to write a character. Stores the character in a buffer and calls syslog(level, buffer) whenever a LF is seen.

Generated by: felfert@usw-pr-shell1.sourceforge.net on Sat Aug 10 18:46:04 2002, using kdoc 2.0a36.

level	The log level for this instance. see syslog(3) for symbolic names to use.
fd	An optional file descriptor to use if switched off.