[Vm-dev] Has anyone done a tutorial on...

[Ben Coman]

On Tue, Sep 19, 2017 at 8:07 AM, Phil B <pbpublist at gmail.com> wrote:

>
> Tim,
>
> I'm open to that... any tutorials on that front would be appreciated 😀.
> The last time I tried (around the spur conversion timeframe) I was unable
> to run an image in the simulator for more than a few minutes without
> problems.
>

Clement wrote a nice tutorial
https://clementbera.wordpress.com/2016/05/30/simulating-the-cog-vm/
derived from...

http://forum.world.st/Exploring-the-simulator-was-Re-REPL-image-for-simulation-td4896870.html

http://forum.world.st/Re-Exploring-the-simulator-method-args-td4898906.html

and if you dig deeper into C side, you might also find my rough drawings
here useful...
  http://forum.world.st/CogVM-Execution-Flow-td4900675.html
(I need to get back to finishing them (dependent on finishing my UFFI Clang
interface to anaylse and chart with Roassal))


> (You folks do some nice work in VM-land... sure would be nice if it were
> more easily reproducible by those of us who don't work with the internals
> daily.  For example: what is the recommended way to build a VMMaker image
> these days?  Tried the obvious ways in Squeak 5.1 and Pharo 6.1 and both
> failed...)
>

Should be as easy as...
$ git clone https://github.com/OpenSmalltalk/opensmalltalk-vm.git
$ cd opensmalltalk-vm/build.linux..../pharo.cog.spur/build.debug/
$ ./mvm
...and look for binaries in "products" directory.

Maybe there are times when your installed autotools versions conflicts
(IIUC Eliot sometimes has problems on newer Linux versions).
If you hit such problems, one path forward may be to leverage Luke's work
to produce a Nix build, which "should" be entirely reproducible on anyone's
environment.

http://forum.world.st/Fwd-Nix-package-for-Pharo-flavor-of-opensmalltalk-vm-td4942450.html

http://forum.world.st/nix-based-build-system-was-problem-with-configure-and-libGL-on-CentOS-6-5-td4944335.html
@Luke, could you refresh me on how to kick off a Nix Pharo VM build on a
non-NixOS platform?

cheers -ben


>
> Thanks,
> Phil
>
> On Sep 18, 2017 7:38 PM, "tim Rowledge" <tim at rowledge.org> wrote:
>
>
> When possible you’re much better off using the VMSimulator to examine an
> image.
>
> > On 18-09-2017, at 4:25 PM, Phil B <pbpublist at gmail.com> wrote:
> >
> > Using gdb to explore a running image?  Blog post or video format is
> great.  Most of what I've run across is related to the internals of the VM
> rather than debugging an image.  My gdb skills are pretty rusty plus I
> suspect that not knowing all of the helper functions available in the VM
> (and how to best use them in a debugging workflow) is slowing me down.
>
>
> tim
> --
> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
> "Bother" said Pooh, as his rucksack opened whilst skydiving
>
>
>
>
>
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