Re: [Boost-users] Boost.Log formal review upcoming

Subject: Re: [Boost-users] Boost.Log formal review upcoming
From: Roland Bock (rbock_at_[hidden])
Date: 2010-03-01 11:12:35

Eric J. Holtman wrote:
> Roland Bock wrote:
>>
>> For instance, instead of
>>
>> BOOST_LOG_SEV(slg, normal) << "A regular message";
>>
>> I'd like to use something like
>>
>> slg.log(normal) << "A regular message";
>>
> 
> Pretty sure that's done for performance, so that if the thing
> being logged is a complex expression, but yet could be trivially
> filtered, it is not evaluated.

Oh, you mean if I use some

#define MINIMUM_LOG_LEVEL 3

then some of these lines are not evaluated?

If the respective parts were header only, I wonder if the same could not 
be done without the MACROS (but with compiler optimization).

Regards,

Roland