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.
Constructs a new instance.
|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.|
Switches loggin on or off.
|on||The desired state.|
Modifies the loglevel of this instance.
|level||The new loglevel.|
Retrieve the current state.
Returns: The current state.
Retrieves the current loglevel.
Returns: The current loglevel.
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.
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