[Vm-dev] [ANN] Lowtalk, a new Smalltalk dialect that could eventually replace Slang

phil at highoctane.be phil at highoctane.be
Tue Sep 5 17:48:58 UTC 2017

Definitely nice.

Is this 64-bit?


On Tue, Sep 5, 2017 at 5:02 PM, Jimmie <jlhouchin at gmail.com> wrote:

> Hello Ronie,
> I think this looks very interesting. I just downloaded your paper to read.
> I look forward to seeing the video of your ESUG demonstration.
> What do you believe the best mailing list to list ask questions at some
> point in the future?
> Thanks again for your work on this interesting project.
> Jimmie
> On 08/30/2017 11:05 AM, Ronie Salgado wrote:
>> Hi All,
>> I am finally glad to announce an initial version of my secret experiment,
>> Lowtalk: https://github.com/ronsaldo/lowtalk
>> Lowtalk is a new Smalltalk dialect that generates relocatable binary
>> object code, that can be linked with any C program or used to generate a
>> standalone executable with the C linker. I am designing Lowtalk as a
>> language for video game developing, where performance and multi-threading
>> support is important. The Lowtalk compiler is completely written in Pharo.
>> The main features of Lowtalk are the following:
>> - The compiler is actually a meta circular evaluator, whose features are
>> used for bootstraping the Lowtalk kernel.
>> - The Lowtalk object model, including the layout of the objects is
>> defined in the language itself.
>> - Direct interface with C. There is an almost 1:1 mapping between the
>> Lowtalk native types and the C types. There is a syntax extension for
>> calling C functions.
>> -Support for real multi-threading.
>> - The current object model uses automatic reference counting, which is
>> slow, but makes supporting real multi-threading easier.
>> - Immediates are based on the Spur object model.
>> - Partial support for generating debugging information in the DWARF
>> standard. It is possible to place breakpoints and get correct stack traces
>> with gdb.
>> Lowtalk is on the line of my work with Lowcode, and I am planning on
>> making a Lowtalk backend that uses Lowcode. The Lowtalk type system is
>> almost the same as the one that I described at the paper: Lowcode:
>> Extending Pharo with C Types to Improve Performance
>> I will make a video later, and a proper demonstration at ESUG.
>> Best regards,
>> Ronie
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