[zeromq-dev] JZMQ - Context.term hangs when PUSH/PULL happen on the same thread.

Trevor Bernard trevor.bernard at gmail.com
Thu Feb 7 16:08:39 CET 2013


Thanks for the explanation.

On Thu, Feb 7, 2013 at 4:15 AM, Pieter Hintjens <ph at imatix.com> wrote:
> This was a long discussion at the time. Socket shutdown is kind of
> difficult given that sockets can migrate between threads. libzmq at
> some points waits for handshaking that can never arrive.
>
> The solution is to (a) always close sockets before terminating the
> context, and (b) set linger to 0 on every socket at least before
> closing it.
>
> CZMQ for example tracks opened sockets per context and closes them
> automatically when needed.
>
> -Pieter
>
> On Thu, Feb 7, 2013 at 3:21 AM, Trevor Bernard <trevor.bernard at gmail.com> wrote:
>> Any one know why this hangs when you try to term the context.
>>
>> https://gist.github.com/trevorbernard/4727863
>>
>> But if I run the sockets on a different thread, the context terms fine.
>>
>> https://gist.github.com/trevorbernard/4727870
>>
>> I've seen a few mentions of this but I've yet to find a good explanation of why?
>>
>> -Trev
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