[Vm-dev] debugging the garbage collector

[Bert Freudenberg]

On 2013-02-15, at 16:42, Noah Evans <noah.evans at gmail.com> wrote:

> 
> My goal is to have general squeak support, I started with Spoon but
> I'd like it to work across VMs. As I understand it the svn tree is
> canonical, which makes it a good place to start.
> 
> Noah

It is, but you need to be aware that we have two different VMs: the interpreter (http://squeakvm.org/svn/squeak/trunk/) and Cog (http://squeakvm.org/svn/squeak/branches/Cog/). And the Spoon VM is based on the interpreter. 

- Bert -

> On Fri, Feb 15, 2013 at 4:34 PM, David T. Lewis <lewis at mail.msen.com> wrote:
>> 
>> On Fri, Feb 15, 2013 at 02:52:45PM +0100, Noah Evans wrote:
>>> 
>>> I've taken bert's advice and gotten the canonical svn tree. For the
>>> moment I've gone away from VMMaker sources and started with the svn
>>> tree's cointerp.c. Once I have that working (most of it already
>>> compiles, I just need to decide what to do with alloca--it's
>>> unimplemented in Plan9 posix emulation) I'll go back and work with
>>> Spoon. I'm just trying to minimize the number of variables for the
>>> moment. The svn tree has been really great in this regard.
>>> 
>>> Can anyone point me to a contributing page for how to submit patches?
>>> Or just to the mailing list proper?
>>> 
>>> Noah
>> 
>> The mailing list for sure. And depending on which branch you end up
>> working with, maybe some other procedures. But definitely post to this
>> list :)
>> 
>> I still worry that Craig seems to be saying that he is working with sources
>> from trunk, and you seem to be saying that you are working with sources
>> from the Cog branch. Assuming your goal is to get a VM for running Spoon,
>> you should make sure that you're on the same page with Craig, otherwise
>> you're going to be in for a lot of extra work.
>> 
>> Dave
>> 
>>> 
>>> 
>>> On Fri, Feb 15, 2013 at 2:47 PM, David T. Lewis <lewis at mail.msen.com> wrote:
>>>> 
>>>> On Fri, Feb 15, 2013 at 01:14:17PM +0100, Bert Freudenberg wrote:
>>>>> 
>>>>> On 2013-02-15, at 11:27, Noah Evans <noah.evans at gmail.com> wrote:
>>>>> 
>>>>>> Craig, which version of Cog are you using? I'm using the tip of the
>>>>>> gitorious tree.
>>>>> 
>>>>> Eliot's canonical sources are in subversion:
>>>>> 
>>>>> http://squeakvm.org/svn/squeak/branches/Cog/
>>>>> 
>>>> 
>>>> Oh dear, I suspect we may have some confusion here. Craig says:
>>>> 
>>>> 
>>>>>     The current release of Spoon is 3 beta 3 (23 October 2012),
>>>>> available at:
>>>>> 
>>>>>     http://netjam.org/spoon/releases/current
>>>>> 
>>>>>     It includes a Squeak 4.2 object memory (4 February 2011) with
>>>>> VMMaker dtl.237 (23 May 2011) installed, and the Spoon VM changes
>>>>> applied to that, and with remote browsing support installed. It runs on
>>>>> the VM it generates, which is the only one supplied in the release (Mac
>>>>> OS, Linux and win32).
>>>> 
>>>> Noah, what platform sources did you start with? The VM that Craig
>>>> describes would have been compiled with platform sources from the
>>>> trunk VM (not branches/Cog). Those sources are at:
>>>> 
>>>>  http://squeakvm.org/svn/squeak/trunk
>>>> 
>>>> You would need to use a version of those sources from the early 2011
>>>> time frame. But I would suggest very stongly that you get an exact
>>>> copy of sources from Craig so that you are starting from exactly the
>>>> same code base that he is using (or maybe that's what you meant in your
>>>> question to Craig the about gitorious tree).
>>>> 
>>>> Mixing generated source code from VMMaker trunk (e.g. VMMaker-dtl.237)
>>>> with platform sources from branches/Cog will definitely not work.
>>>> And mixing generated sources (from VMMaker) with platform sources
>>>> (from Subversion) that are not from the same general time frame will
>>>> probably not work.
>>>> 
>>>> Dave
>>>>