[Vm-dev] Fwd: Ideas for a binary format for an image acting as an extension of the Pharo image

[Bernardo Ezequiel Contreras]

Joe Armstrong made this
http://ubf.github.io/ubf/

but i don't know how good it is or if it appropriate for your needs


On Wed, Nov 9, 2016 at 7:42 PM, Dimitris Chloupis <kilon.alios at gmail.com>
wrote:

>
>
> ---------- Forwarded message ---------
> From: Dimitris Chloupis <kilon.alios at gmail.com>
> Date: Wed, 9 Nov 2016 at 22:27
> Subject: Ideas for a binary format for an image acting as an extension of
> the Pharo image
> To: Any question about pharo is welcome <pharo-users at lists.pharo.org>
>
>
> So now that CPPBridge at least basic are sort out I have to figure out a
> binary file format
>
> The idea here is to implement an image format which will be part of the
> memory of the Pharo process but will live outside the memory of the Pharo
> VM. Lets call this CPPMemory will be stored to an image file, lets call it
> CPPImage, like we do with the Pharo image and will store a shared state
> among all other processes (Pharo or not) that connect to this shared memory
> (CPPMemory) via accessing the file (CPPImage). So basically it will act as
> an extension to the Pharo image.
>
> In the image file , objects will be stored obviously not in a byte-code
> format but definitely in a byte format that will basically store the data
> of this object using very basic primitives like character , integers and of
> course bytes.
>
> Obviously each object will have to have an id as a header and also its
> size in bytes and the size of each of its instance variables.
>
> There will be also a global headers for the entire file with the list of
> the objects included and probably a references to other CPP images that
> they will be able to interconnect with each other like lego blocks.
>
> Thats my vague idea, but I am open to suggestions and even links to
> articles and documentation about what a binary format must have to be
> considered well architectured.  Obviously I dont expect perfection because
> this is my first binary file format but at least I am looking for advise
> for avoiding common pitfalls.
>
> I am also wondering if Pharo VM bytecode would a good binary format for my
> case
>
>


-- 
Bernardo E.C.

Sent from a cheap desktop computer in South America.
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