Re: [myhdl-list] Reusability and encapsulation

[Henry G. <he...@ca...>]

I just submitted a github issue on this. I suggest adding some to that. Please forgive me, I'm sending this from my phone so it's not easy to check the issue number.

The basic problem as far as I can tell is the global state stored in simulator.py and the state that is stored on the signal itself.

Possibly your ipython problems would be fixed by the patch I just submitted to clear the state on a new simulation instance.

Cheers Henry.


On 2 May 2015 20:40:19 BST, Juan Pablo Caram <jp...@gm...> wrote:
>Hi,
>
>I use iPython a lot and need to launch multiple simulations of
>different
>models (and signals) within the same interpreter. And MyHDL does not
>play
>nicely with this.
>
>I've found a way to clean the environment in order to be able to run a
>new
>simulation: I import
>
>from myhdl import _simulator
>from myhdl import _traceSignals
>
>in the beginning, and before every simulation (and signal tracing) I
>do:
>
>_simulator._signals = []
>_simulator._siglist = []
>_simulator._futureEvents = []
>_simulator._time = 0
>_simulator._cosim = 0
>_simulator._tracing = 0
>_simulator._tf = None
>
>_traceSignals._tracing = 0
>
>which is what is done upon importing the mentioned files.
>
>I would love if some re-structuring was done to the code providing
>better
>encapsulation of variables. It would alleviate a lot of problems that
>arise
>when trying to build upon the base myhdl library. As it stands, it's
>fine
>for end-user digital designers, but makes it hard to create software
>that
>use myhdl as a feature.
>
>Specifically, moving the above-mentioned variables to Simulation
>instances
>would be great, and in general, to not have any shared states.
>
>I would happily contribute towards these changes. I'd rather contribute
>to
>the project than be implementing my own ad-hoc fixes.
>
>Thanks,
>
>JP
>
>
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