[Vm-dev] Smalltalk stack dump from gdb

[Alistair Grant]

Hi Ben,


On Thu, 13 Sep 2018 at 18:29, Ben Coman <btc at openinworld.com> wrote:
>
>
>
>
> On Fri, 14 Sep 2018 at 00:02, Alistair Grant <akgrant0710 at gmail.com> wrote:
>>
>>
>> Hi Eliot and Everyone,
>>
>> Is it possible to print out a smalltalk stack dump from within gdb
>> (while debugging a plugin)?
>>
>> The latest changes I'm making to fix UTF8 support in
>> FileAttributesPlugin are causing a segmentation fault, but I can only
>> trigger it during image startup and the fault occurs after returning
>> from the primitive.  I assume I'm corrupting memory somewhere, but
>> haven't been able to track it down yet.
>>
>> Wishing I was at ESUG,
>> Alistair
>
>
> I've only dabbled with the VM, but I believe calling printcallStack() from gdb
> might be what you need.
>
> Until a more authoritative answer arrives, the following might get you started...
> http://forum.world.st/HIGH-CPU-not-frozen-but-s-l-o-w-seaside-image-td91010.html#a91018
> http://forum.world.st/Squeak-periodic-crash-td57392.html#a57393
> http://forum.world.st/Debugging-Win64-Cog-Spur-td4948194.html#a4948339
>
> I believe many of the methods invoked from the VM Simulator can be called as functions from gdb...
> https://clementbera.wordpress.com/2016/05/30/simulating-the-cog-vm/
> http://forum.world.st/Simulator-tutorial-td4888841.html#a4895708
> http://forum.world.st/Exploring-the-simulator-was-Re-REPL-image-for-simulation-td4896870.html#a4897975
>
> cheers -ben

Thanks!  printCallStack() is what I was looking for.  I'll also be
sure to read the links you supplied.

Thanks again,
Alistair