gamedevlists-windows

[GD-Windows] R: exception handling

[Marco S. <mar...@li...>]

Hi,

>And hope you don't use the standard libraries in a way that will throw
>exceptions... (are YOU sure what your operator new will do when out of
>memory?)
Naturally, I can always receive an error from new operator, but I
control the address which returns me (old style), I created a my
operator for this problem.

Searching on MSDN, I understood that the exceptions can't be really
disable. 
Because I don't want to use exception, I must to pass to C libraries
(only for critical performance components). I'm wrong?

RE: [GD-Windows] R: exception handling

[Jon W. <hp...@mi...>]

> Because I don't want to use exception, I must to pass to C libraries
> (only for critical performance components). I'm wrong?

A try/catch block usually has zero performance impact until and 
unless you actually throw an exception. The only cost is the 
tables of EIP-to-unwind information, which sit on disk until they 
get paged in by being referenced by throwing an exception.

Yes, actually throwing is very expensive. Don't do it often!

Cheers,

			/ h+

R: [GD-Windows] R: exception handling

[Marco S. <mar...@li...>]

Thank you for your gold suggestions.
Best regards,
Marco Severino

-----Messaggio originale-----
Da: gam...@li...
[mailto:gam...@li...] Per conto di
Jon Watte
Inviato: marted=EC 19 ottobre 2004 17.31
A: gam...@li...
Oggetto: RE: [GD-Windows] R: exception handling


> Because I don't want to use exception, I must to pass to C libraries
> (only for critical performance components). I'm wrong?

A try/catch block usually has zero performance impact until and=20
unless you actually throw an exception. The only cost is the=20
tables of EIP-to-unwind information, which sit on disk until they=20
get paged in by being referenced by throwing an exception.

Yes, actually throwing is very expensive. Don't do it often!

Cheers,

			/ h+



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