D2 port of Sociomantic CDGC available for early experiments

[Regan Heath via Digitalmars-d-announce]

On Sat, 11 Oct 2014 01:45:48 +0100, Leandro Lucarella <luca at llucax.com.ar>  
wrote:

> Walter Bright, el  9 de October a las 17:28 me escribiste:
>> On 10/9/2014 7:25 AM, Dicebot wrote:
>> >At the same time I don't see what real benefit such runtime options  
>> brings to
>> >the table. This is why in my PR garbage collector is currently chosen  
>> during
>> >compilation time.
>>
>> Choosing at compile time is probably best.
>
> This is not (only) about picking a GC implementation, but also about GC
> *options/configuration*. The fact that right now to select between
> concurrent or not would mean using a different GC altogether is just an
> implementation detail. As I said, if at some point we can merge both,
> this wouldn't be necessary. Right now GDGC can disable the concurrent
> scanning, among other cool things (like enabling memory stomping,
> enabling logging of allocations to a file, enable logging of collections
> to a file, controlling the initial pools of memory when the program
> starts, etc.).
>
> This is very convenient to turn on/off not exactly at *runtime* but what
> I call *initialization time* or program startup. Because sometimes
> recompiling the program with different parameters is quite annoying, and
> as said before, for stuff that needs to be initialized *before* any
> actual D code is executed, sometimes is not easy to be done *inside* D
> code in a way that's not horrible and convoluted.
>
> I still don't understand why wouldn't we use environment variables for
> what they've been created for, it's foolish :-)

As mentioned this is not a very windows friendly/like solution.

Wouldn't it be more generally useful to have another function like main()  
called init() which if present (optional) is called before/during  
initialisation.  It would be passed the command line arguments.  Then a  
program can chose to implement it, and can use it to configure the GC in  
any manner it likes.

Seems like this could be generally useful in addition to solving this  
issue.

R

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