[boost] Re: BOOST_NO_EXCEPTIONS

From: Alexander Terekhov (terekhov_at_[hidden])
Date: 2003-09-29 12:46:19

Joaquín Mª López Muñoz wrote:
> 
> After following the discussion, it is not at all clear to me which
> approach
> should I take to handle BOOST_NO_EXCEPTIONS :)
> Finally I rewrote the try-catch blocks of my indexed_set library to
> use scope guards, which will work in any situation. Admittedly, it'll
> add some runtime penalty, but I don't think it is significant.

On systems without exceptions, all calls are effectively throw() 
BUT without compiler-injected (due to the current *misguided* Std 
C++ rules with respect to ES) catch(...) handlers. This relieves 
the "pressure" put on the optimizers (not to optimize; things like
"MEMORY ACCESS ORDER"[1] aside for a moment) and you can expect 
NOT to pay a penalty due to scope guard objects (all those refs 
and so forth), AFAICS.

regards,
alexander.

[1] http://google.com/groups?selm=3EEDD118.5065FAC9%40web.de
    (Subject: Re: std0X::expected_exception<T>() [repost])

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(Subject: Re: std0X::expected_exception<T>())