[Squeak-VMdev] re: simulating current snapshots

[Dan I. <Da...@Sq...>]

Hi, Ned -

>On Friday 09 July 2004 12:33 pm, Dan Ingalls wrote:
>
>> I am now at the point where the 64-bit system works essentially as well as
>> the 32-bit system in simulation, but that is not good enough.  There are
>> failures in both during morphic display, and these become fatal as they
>> recur during attempts to put up error windows.
>
>Where are you seeing the problems?

As I mentioned in that message,
> Most of my current failures stem from BalloonEngine>>#primInitializeBuffer:
However I think some other things may be failing that shouldn't.

> > Moreover the latest system,
>> even when running MVC, uses outline fonts, and there are failures in
>> simulating these.
>
>It doesn't have to use outline fonts. Just remove the TTCFont and set the
>system fonts to not use them.

Yes, and that will be useful for people who want small MVC images, but my goal is no longer to avoid the problems but to deal with them.

> > I need to know some very basic information, which has changed since I was
>> last in control of the VM and simulation.
>>
>> 1.  If everything worked right, is it the case that a current system should
>> be able to simulate itself?  What this means is that, provided that the
>> plugin interface all works (and fails) properly, does all the necessary
>> failure code exist such that the system will run completely and with
>> integrity?  If this is not so, then a further question is, apart from
>> whatever fixes may be needed, how much new code would need to be written?
>
>Did you get the various simulation changes that I and others posted (I think I
>mailed some to you)? I don't think they have gotten back into the image (but
>they should), because they needed more testing.

I thought that Tim had folded them into the VMMaker that he put out after that time.  If he didn't, then that is unfortunate, and I'm not sure that they are still additive.  This is why it would be so useful for me to get one consistently working system.  I could then fairly easily force that latest release and the latest VMMaker into full compliance.  [but the short answer to your question is no;  do you know if they still work with the latest VMMaker?]

> > 2.  Assuming the answer to (1) is yes (and I sure hope it is), then the
>> question is, does anyone anywhere have a recent version of Squeak that can
>> simulate itself successfully in Morphic?  This means displaying the mouse (
>> ideally), and a browser in which one can at least type 3+4, and print the
>> value.  If so, then this is all I need, as I can use that to find whatever
>> problems there are in the latest 3.7 and VMMaker that I am using for the
>> basis of the 64-bit work.
>
>I had this going at one time, as I recall.

That's what Craig said ;-) ;-).  Seriously, it would be *wonderful* if you could produce any one recent image that can simulate itself with integrity.

> > I would be happy to supply further debugging info, and you can, of course,
> > see it all for yourself if you have time to load up VMMaker in the latest
> > 3.7, and try simulating itself.
>
>What are you loading besides the basic image?

I run the latest 3.7 (5963).  I am using VMM 37b2.1 plus the two-method fix needed to make it work since Tim's latest changes.  That's where I test it.  Then there's a raft of Ian's type reconciliation changes and my 64-bit changes, plus Anthony's Systemtracer2 and my subclass for 64-bit images as well.  but all I need is a current 3.7 with a current VMMaker plus changes that make them able to simulate itself fully and, as I said, I'd settle for one that is not current from which I could repair the current one by side-by-side comparison.

Thanks for responding, Ned

	- Dan