[Python-ideas] Concurrent safety?

[Amaury Forgeot d'Arc]

Hi,

2011/10/31 Mike Meyer <mwm at mired.org>

> Any attempt to mutate an object that isn't currently locked will raise
> an exception. Possibly ValueError, possibly a new exception class just
> for this purpose. This includes rebinding attributes of objects that
> aren't locked.
>

PyPy offers a nice platform to play with this kind of concepts.
For example, even if it's not the best implementation, it's easy to add a
__setattr__ to the base W_Object class, which will check whether the object
is allowed to mutate.

But you certainly will open a can of worms here: even immutable objects are
modified (e.g str.__hash__ is cached) and many functions that you call will
need to add their own locks, is it possible to avoid deadlocks in this case?


-- 
Amaury Forgeot d'Arc
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