Status on Precise GC

[Alex Rønne Petersen]

On 08-09-2012 22:04, Benjamin Thaut wrote:
> Am 08.09.2012 14:47, schrieb Alex Rønne Petersen:
>> On 08-09-2012 08:44, Benjamin Thaut wrote:
>>> Am 08.09.2012 03:56, schrieb Tyler Jameson Little:
>>>> This issue on bugzilla hasn't been updated since July 2011, but
>>>> it's assigned to Sean Kelly:
>>>> http://d.puremagic.com/issues/show_bug.cgi?id=3463
>>>>
>>>> I've found these threads concerning a precise GC:
>>>>
>>>> http://www.digitalmars.com/d/archives/digitalmars/D/learn/Regarding_the_more_precise_GC_35038.html
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> http://www.digitalmars.com/d/archives/digitalmars/D/How_can_I_properly_import_functions_from_gcx_in_object.di_171815.html
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Is this issue obsolete, or is it being worked on?
>>>>
>>>> Reason being, I'm writing a game in D and I plan to write it in
>>>> nearly 100% D (with the exception being OpenGL libraries and the
>>>> like), but I know I'll run into problems with the GC eventually.
>>>> If this is an active project that may get finished in the
>>>> relative near term (less than a year), then I'd feel comfortable
>>>> knowing that eventually problems may go away.
>>>>
>>>> I want to eventually make this work with ARM (Raspberry PI &
>>>> cubieboard), and the GC is a major blocker here (well, and a
>>>> cross-compiler, but I'll work that out when I get there).
>>>>
>>>> I'm using dmd atm if that matters.
>>>>
>>>> Thanks!
>>>>
>>>> Jameson
>>>
>>> About a year ago I have been at the same point then you are now, and
>>> afterwars I tell you that you should write your project without a GC
>>> from the start. See my article about this:
>>> http://3d.benjamin-thaut.de/?p=20
>>>
>>> GCs are usually not very good for games, unless you have a concurrent
>>> generational incremental non stop the world GC like .Net 4 (Which they
>>> created only for XNA 4)
>>>
>>> Kind Regards
>>> Benjamin Thaut
>>
>> You can't be incremental /and/ concurrent non-STW.
>>
>
> You can, they have multiple pools of memory, some of them are scanned
> concurrently and the big one incremental.
>
> Kind Regards
> Benjamin Thaut

Right... but then your GC is not purely concurrent non-STW, which is 
what I thought you were saying. Incremental inherently implies some kind 
of STW, regardless of what generation we're talking about.

-- 
Alex Rønne Petersen
alex at lycus.org
http://lycus.org