RE: [DotGNU]question about Finalize in C#

[James Mc Parlane]

IMHO - If you have to use a finaliser, then why even bother to use a GC
based system. Just code in C or C++ :)

> -----Original Message-----
> From: Juhani Honkala [mailto:address@hidden
> Sent: Thursday, September 05, 2002 6:23 AM
> To: Ian Fung
> Cc: address@hidden
> Subject: Re: [DotGNU]question about Finalize in C#
> 
> 
> On Wed, 4 Sep 2002, Ian Fung wrote:
> 
> > C# Q: I understand what Finalize does. but from what i 
> understand, it
> >          is not guarentteed to be called (ie only when the 
> GC is called) and
> >          it also takes two calls to teh GC to retrieve the 
> object. what kind
> >         of cleanup would you want to put in Finalize? i 
> mean for example, if
> >           i open a file, wouldnt i want to close it outside 
> of Finalize to
> >           make sure it closes everytime instead of putting 
> it in Finalize?
> > 
> 
> C# (unfortunately) lacks of explicit destruction scheme as in C++.
> 
> You should never depend on a finalizers to release any criticial 
> resources. Instead of writing finalizer write an explicit release
> method like Dispose() and use Finalize() only as a safety net or last
> resort (in case user forgets to call Dispose()). Remember to call
> superclass Finalize() if you override Finalize(). (If my memory serves
> me right there's an interface in C# called IDispose that's tries to
> somehow standardize use of explicit destruction, i'm not 100% 
> sure tho) 
> 
> i'm not sure how c# syntax do but in Java it would something like
> 
> public void dispose() {
>  //release all critical resources here
> }
> 
> protected void finalize() {
>    try {  
>       dispose(); 
>    } finally {
>       super.finalize()
>    }
> }
> 
> 
> Generally you should avoid using only finalizers to free resources,
> in some situations it might be acceptable like in freeing non-critical
> native resources or something but these cases should be considered as 
> exception. 
> 
> 
> 
> if things are different in C# than in Java, feel free to correct
> me ;)
> 
> juhani
> 
> _______________________________________________
> Developers mailing list
> address@hidden
> http://www.dotgnu.org/mailman/listinfo/developers
>