From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2008-02-12 22:57:30
Terence Wilson wrote:
> One of the most difficult aspects of writing a logging library is not making
> users' pay for what they don't log. I've noticed that with many logging
> libraries the inclusion of logging code incurs a run-time penalty of at
> least one "if" clause per log statement even if we know at compile time that
> some or all logging is not required. This is a big deal if one wants to
> liberally sprinkle logging throughout the application.
> For me, a primary requirement of the logging library is that it is
> efficient. If that can be done in C++, presumably using templates and
> compile time tricks to get rid of no-ops, then I'm all for it. I'm guess I'm
> just not smart enough to figure out how to do that, maybe John is!
> Efficiency first, features second.
As a matter of fact, John's library uses an if statement, too. However,
if the condition is known at compile time the compiler can optimize it
away perfectly well.
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