[Twisted-Python] flow testThreaded thingy

[Wari Wahab]

Matthias Urlichs wrote:

>> I tried doing strace on the process and just got this:
>>    
>>
>This seems to be exactly the sort of almost-intractable timing-dependent
>problem which gives threading in general a well-deserved reputation for
>bugginess.  :-/
>
>I'll have a chance to dig around in flow+threading over the weekend.
>
Oh btw, before you do more digging, I've tested the testThreaded thing 
again on a single CPU machine, and the result is pass everytime. I think 
this is more of a dual CPU issue, where out of ten times I runned 
twisted.test.test_flow, only one time it passes, and the rest of the 
test hangs on testThreaded.

Also, the test passes everytime if I do 'trial -v 
twisted.test.test_flow.FlowTest.testThreaded' on the dual CPU. So I 
think that the other tests can affect the successful running of 
testThreaded.