***********************
I'm sorry for posting again,
I forgot to write my e-mail
e-4 (at) venezolano.web.ve
***********************

Hello, i just found out about D language..

I'd like to know how does the Garbage Collector is suposed to work if there is no VM on this new language.

Regards,

Mel

http://www.advance.com.ve/

It works the similar way as Boehm's Garbage Collector for C and C++, so you may want to look up there. It is a conservative memory scanner. All allocations are routed through the collector, which, when the application becomes short on RAM, scans through the stack, and finds areas allocated with it. These are scanned recursively. It marks all of "visible" memory areas, and the rest is freed. When freeing, a destructor may optionally be called, which is registered with a garbage collector when allocating a piece of memory - for classes it is automated.

Right now it does not even reach the efficiency of Boehm's, but there are plans that compiler generates special code or data to assist the Garbage Collector, so it may become very fast. Considerations have been made to move to more agressive or different forms of Garbage Collection, and dedicated code generation makes it possible. A VM is not a requierement for the garbage collector.

-eye

e-4@venezolano.web.ve schrieb:

> ***********************
> I'm sorry for posting again,
> I forgot to write my e-mail
> e-4 (at) venezolano.web.ve
> ***********************
> 
> Hello, i just found out about D language..
> 
> I'd like to know how does the Garbage Collector is suposed to work if there is
> no VM on this new language.
> 
> Regards,
> 
> Mel
> 
> http://www.advance.com.ve/

Thanx, It was very helpfull... I wasn't familiar with Boehm's Garbage Collector but I found some pretty good info about it. I had more experience with Java and other high level programming languages like VB o VFP.

I noted that to implement Boehm's Garbage Collector, we have to include and implement some code, that's why I asked about the VM... In Java the VM takes care of Garbage Collection.

Melvin D. Nava
http://www.advance.com.ve/


"Ilya Minkov" <minkov@cs.tum.edu> escribió en el mensaje news:chn3ps$qfd$1@digitaldaemon.com...
> It works the similar way as Boehm's Garbage Collector for C and C++, so
> you may want to look up there. It is a conservative memory scanner. All
> allocations are routed through the collector, which, when the
> application becomes short on RAM, scans through the stack, and finds
> areas allocated with it. These are scanned recursively. It marks all of
> "visible" memory areas, and the rest is freed. When freeing, a
> destructor may optionally be called, which is registered with a garbage
> collector when allocating a piece of memory - for classes it is automated.
>
> Right now it does not even reach the efficiency of Boehm's, but there are plans that compiler generates special code or data to assist the Garbage Collector, so it may become very fast. Considerations have been made to move to more agressive or different forms of Garbage Collection, and dedicated code generation makes it possible. A VM is not a requierement for the garbage collector.
>
> -eye
>
> e-4@venezolano.web.ve schrieb:
>
> > ***********************
> > I'm sorry for posting again,
> > I forgot to write my e-mail
> > e-4 (at) venezolano.web.ve
> > ***********************
> >
> > Hello, i just found out about D language..
> >
> > I'd like to know how does the Garbage Collector is suposed to work if
there is
> > no VM on this new language.
> >
> > Regards,
> >
> > Mel
> >
> > http://www.advance.com.ve/