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From "Teemu Torma (JIRA)" <>
Subject [jira] [Commented] (AMQCPP-361) Destroying a consumer may cause a crash
Date Thu, 14 Apr 2011 13:48:05 GMT


Teemu Torma commented on AMQCPP-361:

Ok, I will try that.  Start and stop are not part of cms interface though.

> Destroying a consumer may cause a crash
> ---------------------------------------
>                 Key: AMQCPP-361
>                 URL:
>             Project: ActiveMQ C++ Client
>          Issue Type: Bug
>          Components: CMS Impl
>    Affects Versions: 3.2.5
>         Environment: all
>            Reporter: Teemu Torma
>            Assignee: Timothy Bish
> ActiveMQSessionExecutor::dispatch gets a consumer and calls consumer's dispatch method
without holding any locks in between.  This leaves a window when a consumer can be no longer
valid on a dispatch call causing a crash.
> Since this is a timing issue it is hard to demonstrate as such.  If one adds let's say
one second sleep in ActiveMQSessionExecutor::dispatch before the call to the consumer->dispatch,
and destroys a consumer on a destination which has messages incoming will likely crash the

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