[zeromq-dev] Assertion failed: pfd.revents & POLLIN (src/signaler.cpp:243)

[Bachmair Florian - flexSolution GmbH]

Thanks for the reply!

But how can I listen to both sockets, pipe and subscriber?

Are there any examples how to do that?


On 2017-09-29 22:14, Luca Boccassi wrote:
> On Fri, 2017-09-29 at 11:38 +0200, Bachmair Florian - flexSolution GmbH
> wrote:
>> Hi!
>>
>> When I stop my application in roughly 1 out of 20 tries I get this
>> error:
>>
>> Assertion failed: pfd.revents & POLLIN (src/signaler.cpp:243) (here
>> is
>> the corresponding line of code:
>> https://github.com/zeromq/libzmq/blob/v4.2.0/src/signaler.cpp#L243 )
>>
>>        Stack trace of thread 8576:
>>            #0  0x00007f56d22a78a0 raise (libc.so.6)
>>            #1  0x00007f56d22a8f09 abort (libc.so.6)
>>            #2  0x00007f5686c7cc99 n/a
>> (/home/flex/core-1.5.0-SNAPSHOT/lib/native/libzmq.so.5)
>>            #3  0x00007f56d26255a0 _IO_2_1_stderr_ (libc.so.6)
>>
>>
>> Before I stop my application I disconnect from ALL publishers with
>>
>> zsock_disconnect(subscriber, "tcp://%s:%d", c_ip, port);
>>
>> after that I destroy my sockets and actors
>>
>> zsock_destroy(&publisher);
>>      zsock_destroy(&req);
>>      zsock_destroy(&subscriber);
>>
>>      //this is never finished
>>      zactor_destroy(&actorRep);
>>      zactor_destroy(&actorSub);
>>
>>
>> I guess its a problem with stopping the actors, how do I propperly
>> stop
>> this actor?
>>
>> void sub_actor(zsock_t *pipe, void *args) {
>>       zsock_signal(pipe, 0);
>>       while (!zsys_interrupted) {
>>           char* topic;
>>           char* timestamp;
>>           char* value;
>>           char* id;
>>           zsock_recv(subscriber, "ssss", &topic, &timestamp, &id,
>> &value);
>>
>>           onMessageReceived(topic, timestamp, id,value);
>>       }
>> }
>>
>> Thanks Florian
> As the docs say, the zactor function must listen for $TERM on the pipe
> zsock_t:
>
> http://czmq.zeromq.org/czmq4-0:zactor
> https://github.com/zeromq/czmq#czmq-actors
>
> zactor_destroy() from the parent will, under the hood, send the $TERM
> message and wait for the zactor to correctly close.
>
>
>
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