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[Python-Dev] Another threading idea

Raymond Hettinger raymond.hettinger at verizon.net
Tue Mar 14 23:33:19 CET 2006 
> Isn't this a job for threading.BoundedSpemaphore()?

I don't see how that would work.  ISTM that we need an inverse of a 
BoundedSemaphore.  If it understand it correctly, a BS blocks after some pre-set 
maximum number of acquires and is used for resources with limited capacity (i.e. 
a number of connections that can be served).  With the TaskQueue, there is no 
pre-set number, the queue can grow to any size, and the join() method will block 
until the counter falls back to zero.  IOW, a BS is about potentially blocking 
new requests and a TaskQueue is about blocking other work until outstanding 
requests are complete.


Raymond
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