[Zope] Re: Locking objects

[Tres Seaver]

Jeff Rodriguez wrote:

> I need to lock an object to perform thread/ZEO safe operation on one
> of it's attributes. How can I go about doing this?

The transaction / concurrency machinery of the ZODB makes such 
precautions normally unnecessary for persistent objects.  Are you 
needing to protect a non-persistent object, e.g. a module-level global 
data structure?  If so, Python's 'threading' module (or the lower-level 
'thread' module) is your friend.

See $ZOPE/lib/python/Products/StandardCacheManagers/RAMCacheManager.py 
for an example of such usage.

Tres.
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Tres Seaver                                tseaver at zope.com
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