Re: The logging macros

I suspect you are thinking in an "old
fashion" way where log levels are determined by #defines at preprocessing
time. Log4cxx does this based on configuration file settings.
If you look at the logging macros you'll see: 

if (logger->isEnabledFor(level)) { 
... 
} 

This way, the desired log level is set at runtime without a need for recompiling
(or even having access to) the source code. Of course, there is a small
performance price to pay. 

Alex 

Mattias Brändström <thebrasse@xxxxxxxxxx> wrote on 08/20/2004 04:37:47
AM:

> Hello!
> 
> I was looking at the logging macros in log4cxx and I have one question.
> Is there any particular reason why the macros aren't enclosed in an
#if 
> like this:
> 
> #if !defined(LOG4CXX_DISABLE_DEBUG)
> 
> macro definition here
> 
> #endif
> 
> I suspect that there is a reason for this, I just can't figure it
out on 
> my own. :-) So please enlighten me.
> 
> :.:: mattias