[zeromq-dev] ZMQ Java - Best practice to clean when exiting

Min miniway at gmail.com
Tue Nov 18 10:35:05 CET 2014


context.destroy might be ok if you only work with jeromq.

But still the best practice is calling close and term explicitly at the end of your logic for future reference and same style on other platforms.

Thanks
Min



> On Nov 18, 2014, at 1:26 AM, rails <stammailbox at gmail.com> wrote:
> 
> Thanks. 
> But if I look at the  jeromq code - I see inside ZContext.destroy a call for destroySocket (to each socket ) which
> s.setLinger(linger);
> s.close();
> sockets.remove(s);
> And then It even calls 
> sockets.clear(); and context.term();
> 
> So - Am i safe by calling the java (jeroMQ ) implementation of context.destroy
> 
>> On Tue, Nov 18, 2014 at 10:25 AM, Pieter Hintjens <ph at imatix.com> wrote:
>> 1. set linger = 0 on all sockets
>> 2. close all sockets
>> 3. terminate context
>> 
>> On Tue, Nov 18, 2014 at 9:10 AM, rails <stammailbox at gmail.com> wrote:
>> > In ZMQ zguide they advice to always clean up when task ends. I am a bit
>> > confused regarding the best practice.
>> >
>> > First
>> >
>> > ... even if you close all sockets, zmq_ctx_destroy() will by default wait
>> > forever
>> > ... Finally, destroy the context
>> > ... This will cause any blocking receives or polls or sends in attached
>> > threads
>> >     to return with an error. Catch that error, and then set linger on, and
>> > close sockets in that thread,
>> >
>> > So do I need to close? destroy? all sockets before I destroy the context?
>> > Looking at the context.destroy() I see it calls linger and close on each
>> > socket.
>> >
>> > How should I terminate my ZMQ resources?
>> >
>> >
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