Re: [boost] Signals Library Review

From: David Abrahams (david.abrahams_at_[hidden])
Date: 2002-02-26 10:58:54

----- Original Message -----
From: "Steven Kirk" <steven.kirk_at_[hidden]>

> > Ouch! I just checked the size of boost::signal<void> on the compilers I
> have
> > easy access to, and here are the results:
> >
> > Borland C++ 5.5.1/Windows 2000: 80
> > MSVC 6.0sp5/Windows 2000: 28
> > GCC 2.95.3/Linux 2.4.x: 24
> > GCC 3.0.3/Linux 2.4.x: 16
> > Comeau 4.2.45.2/Linux 2.4.x: 20
> >
> Oh now those sizes sound far more reasonable! In that case consider my
> objections dropped. I'm still not sure how you're getting 80 bytes on BCC
> though. On a default Jam build, which I notice doesn't switch on the empty
> base class optimisation or empty member optimisation, I get 136. Enabling
> these optimisations, I get 120. Still quite some way behind GCC3.0.3

Please post a patch for the toolset which enables these by default. There's
no reason for them to be disabled unless they cause bugs.

Thanks!
-Dave