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From "Evan Kuhn (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQCPP-330) Unable to reinitialize ActiveMQ CMS library and then open a session
Date Fri, 19 Nov 2010 20:57:24 GMT
Unable to reinitialize ActiveMQ CMS library and then open a session
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                 Key: AMQCPP-330
                 URL: https://issues.apache.org/activemq/browse/AMQCPP-330
             Project: ActiveMQ C++ Client
          Issue Type: Bug
          Components: Decaf
    Affects Versions: 3.2.3
         Environment: Windows XP SP2
            Reporter: Evan Kuhn
            Assignee: Timothy Bish
            Priority: Minor


I'm working on a project that initializes and shuts down the ActiveMQ CMS library multiple
times.  After upgrading from CMS 3.1.3 to 3.2.3, I noticed that my process crashes after these
steps:

1) Initialize ActiveMQ CMS library
2) Create connection, session, etc and do work
3) Shut down ActiveMQ CMS library
4) Initialize ActiveMQ CMS library a second time
5) Create a connection, then a session... crash

First off, am I allowed to reinitialize the CMS library after shutting it down?  Is it recommended
not to?

Either way, the program crashes at:

    /main/activemq/transport/tcp/TcpTransport.cpp line 163

I believe the error is in  /main/decaf/net/SocketFactory.cpp.  The static SocketFactory::defaultFactory
pointer (line 30) is set while creating the first session.  Then when shutting down the library,
the Network object destroys the object pointed to by SocketFactory::defaultFactory.  The next
time around, SocketFactory::getDefault() will try to use the pointer, but the factory object
has been destroyed, so the process crashes.

One possible fix is to modify the SocketFactory destructor to set the defaultFactory pointer
to NULL.  I have no idea if that's a good solution, though.

I will attach a test program to reproduce the crash.

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