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From "Nathan Mittler (JIRA)" <>
Subject [jira] Commented: (AMQCPP-188) ActiveMQ message consumer waiting for receive to complete is not closing...
Date Thu, 10 Jul 2008 15:06:00 GMT


Nathan Mittler commented on AMQCPP-188:

I've applied the change to trunk - many thanks!

My guess as to why this was missing is simply because we weren't fully considering the use

The JMS spec (CMS is just a port of JMS to C++), indicates that a session and all resources
from that session are to be used from a single thread context.  This would mean that in the
pure JMS case, it wouldn't be recommended to close() a consumer from a different thread than
you're synchronous consumer (receive()).  

ActiveMQ-CPP tends to be a bit more liberal with how the consumers can be used, however, and
what you were trying to do should work - but apparently there were some bits missing.

I'll close this issue after I've done some testing.

> ActiveMQ message consumer waiting for receive to complete is not closing...
> ---------------------------------------------------------------------------
>                 Key: AMQCPP-188
>                 URL:
>             Project: ActiveMQ C++ Client
>          Issue Type: Bug
>          Components: CMS Impl
>    Affects Versions: 2.2
>         Environment: Windows
>            Reporter: Rakesh
>            Assignee: Nathan Mittler
>             Fix For: 2.2.1
> I have a created an application which creates a connection and consumers using ActiveMQ
C++ Client, after running the application consumer is waiting for the recive to complete.
when we shutdown the application we close the connection, but close call of connection does
not notify all the consumers (who is waiting for the message to be recived). 
> I have seen in the close method of ActiveMQConsumer after purging all the messages there
is no call to notifyAll on object unconsumedMessages because of which consumers waiting for
the receive does not does not come out of the wait call, which is causing our application
not to shutdown.
> we modified the close call the notify all the consumers after purging all the unconsumed
mesages and our application is working fine.
> Following is the changes that i have made in ActiveMQConsumer.cpp class
> void ActiveMQConsumer::close(){
> ....
> ....
>             // Purge all the pending messages
>             try{
>                 purgeMessages();
>             } catch ( ActiveMQException& ex ){
>                 if( !haveException ){
>                     ex.setMark( __FILE__, __LINE__ );
>                     error = ex;
>                     haveException = true;
>                 }
>             }
>          //Start of additional code
>          synchronized( &unconsumedMessages )
>          {
>                 unconsumedMessages.notifyAll();
>          }
>          //End of additional code
> ....
> ....
> }
> can anyone let me know why this has not been done? I think this should be done. please
explain if I am missing something

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