[Spread-users] Spread python poll() taking almost 100% CPU

Brian Moseley bcm at maz.org
Fri Oct 1 17:23:47 EDT 2004

Tim Peters wrote:

> You'll be happy with that; or, if you don't want to do anything other
> than get msgs, just do a straight:
>     msg = mbox.receive()
> and let it worry about figuring out when a msg is available.

i was having the same problem as the original poster, so i switched to 
the poll/sleep technique. seems to work fine.

i'd prefer to not have to poll tho, for the reason you mentioned. using 
poll, i have to continuously check that the connection is still 
connected, and reconnect if it somehow dropped away underneath. yuck.

however, my listener is a daemon (using the java service wrapper at 
http://wrapper.tanukisoftware.org/). i want to be able to run "mydaemon 
stop" and have the os shut down my listener cleanly. but if i do that 
and the shutdown hook disconnects the spread connection while the 
listening thread is still in msg.receive(), i get an exception. yuck.

any idea how i can sit in msg.receive() and then have my shutdown hook 
disconnect the spread connection gracefully?

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