[Twisted-Python] Is there pb documentation somewhere?

Daniel Sank sank.daniel at gmail.com
Mon Aug 18 13:37:29 MDT 2014


glyph,

> A "resource" - i.e. a Referenceable - is just a Python object in memory.

Indeed.

> but in normal operation, Python objects don't spontaneously ascend
> to a different plane of existence - as long as there are pointers to them
in
> memory

Of course.

> in the case of Referenceables that are currently in use, a reference
> from a dictionary on the Broker instance for the client which is using
> them

Suppose I have a Thingy:

myThingy = Thingy()

I want to give you some amount of access to manipulate myThingy, so I make
a Referenceable which has some connection to it:

myReferenceable.thingy = weakref.proxy(myThingy)

and I send you the Referenceable. Now suppose I do

del myThingy

Now myThingy will be garbage collected. Then, if you invoke methods on
myReferenceable, they'll fail. Is this what we want, or should I tell you
that your RemoteReference should be considered stale?

If I'm not thinking about this correctly please advise. I realize that I
could have done

myReferenceable.thingy = myThingy

so that myThingy lives as long as myReferenceable, but this doesn't
actually seem like what I would normally want.

Daniel
-------------- next part --------------
An HTML attachment was scrubbed...
URL: </pipermail/twisted-python/attachments/20140818/0fdcda12/attachment-0002.html>


More information about the Twisted-Python mailing list