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From "Nathan Mittler (JIRA)" <j...@apache.org>
Subject [jira] Updated: (AMQCPP-68) Memory Leak in Message transport / send / recieve C++ client
Date Tue, 27 Feb 2007 12:23:03 GMT

     [ https://issues.apache.org/activemq/browse/AMQCPP-68?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nathan Mittler updated AMQCPP-68:
---------------------------------

    Component/s: Other C++ Clients

> Memory Leak in Message transport / send / recieve C++ client
> ------------------------------------------------------------
>
>                 Key: AMQCPP-68
>                 URL: https://issues.apache.org/activemq/browse/AMQCPP-68
>             Project: ActiveMQ C++ Client
>          Issue Type: Bug
>          Components: Other C++ Clients
>         Environment: Win XP, VC++ Version 8
>            Reporter: Tomas Lebovic
>            Priority: Critical
>
> There seems to be a memory leak in the message transport. If we take the following simple
code below and then monitor memory consumption we will see it steadily go up. 
> <code>
> #include <exception>
> #include <iostream>
> #include <map>
> #include <string>
> #include <stdio.h>
> #include <cms/IConnection.hpp>
> #include <cms/IConnectionFactory.hpp>
> #include <activemq/ConnectionFactory.hpp>
> #include <activemq/Connection.hpp>
> #include <ppr/TraceException.hpp>
> #include <ppr/net/Uri.hpp>
> #include <ppr/util/ifr/p>
> using namespace apache::activemq;
> using namespace apache::ppr::net;
> class TestAsynchTopic :public IMessageListener
> {
> private:
> public:
> 	void onMessage(p<IMessage> message)
> 	{
> 		p<IMapMessage> msg = p_dyncast<IMapMessage> (message) ;
> 		printf("got %s\n",msg->getString("msg")->c_str());
> 		msg = NULL;
> 	}
> } ;
> char * bunk = "memory leak?";
> int main()
> {
>         TestAsynchTopic list1;
>  
>         p<Uri> uri = new Uri("tcp://localhost:61616");
> 	p<ConnectionFactory> factory = new ConnectionFactory(uri);
> 	p<ISession>    session  = NULL;
>         p<ITopic>           topic = NULL ;
> 	p<IMessageConsumer> consumer1 = NULL;
> 	p<IMapMessage>      message = NULL ;
> 	p<IMessageProducer> producer = NULL ;
> 	try
> 	{
> 		p<IConnection> connection  = factory->createConnection();
> 		session= connection->createSession();
> 	} 
> 	catch(ConnectionException &e)
> 	{	
> 		printf("%s\n",e.what());
> 	}
>     
>         topic = session->getTopic("memory.leak") ;
>         producer = session->createProducer(topic) ;
> 	consumer1 = session->createConsumer(topic) ;
> 	consumer1->setMessageListener( smartify(&list1) ) ;
>        while(1)
> 	{
> 		message = session->createMapMessage();
> 		message->setString("msg", (char*)bunk);
> 		producer->send(message);
> 		message = NULL;
> 	}
>         return 0;
> }
> </code>
> Now i haven't been using c++ api for a long time but i can't see any way to destroy the
messages other then letting them go out of scope or when refrence count = 0. So if there is
a way to destroy the messages after they are sent / recieved please let me know.

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