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From "Albert Strasheim (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQCPP-122) Crash on Windows when rapidly creating and destroying connections
Date Sun, 03 Jun 2007 22:09:32 GMT
Crash on Windows when rapidly creating and destroying connections
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                 Key: AMQCPP-122
                 URL: https://issues.apache.org/activemq/browse/AMQCPP-122
             Project: ActiveMQ C++ Client
          Issue Type: Bug
    Affects Versions: 2.1
            Reporter: Albert Strasheim
            Assignee: Nathan Mittler
             Fix For: 2.1


Me again. :)

The following program crashes within a few seconds on my Windows XP machine. This machine
has a Core 2 Duo processor (i. e. 2 cores).

On my Pentium 4 + Hyperthreading Linux machine is only dies after about a minute with:

terminate called after throwing an instance of 'activemq::exceptions::ActiveMQException'
  what():  Cannot assign requested address
Aborted

However, this is to be expected, since the program causes thousands of sockets to be created.
This doesn't seem to be the reason it crashes on Windows though.

The code:

{code:none}
#include <activemq/core/ActiveMQConnectionFactory.h> 
#include <cms/Connection.h> 
#include <cms/Session.h>
#include <cms/MessageProducer.h>
#include <cms/DeliveryMode.h>

int main(int argc, char* argv[]) {                            
  activemq::core::ActiveMQConnectionFactory connectionFactory("tcp://localhost:61613?wireFormat=stomp");
  while(true)
  {
    cms::Connection* connection = connectionFactory.createConnection(); 
    cms::Session* session = connection->createSession(cms::Session::AUTO_ACKNOWLEDGE);
    cms::Topic* topic = session->createTopic("topic");
    cms::MessageProducer* producer = session->createProducer(topic);
    delete producer;
    delete topic;
    delete session; 
    delete connection;
  }
  return 0;
}
{code}

The stack trace when it crashes:

>	activemq-cppd.dll!activemq::io::BufferedInputStream::read()  Line 79 + 0x12 bytes	C++
 	activemq-cppd.dll!activemq::connector::stomp::StompCommandReader::readStompHeaderLine()
 Line 194 + 0x19 bytes	C++
 	activemq-cppd.dll!activemq::connector::stomp::StompCommandReader::readStompCommandHeader(activemq::connector::stomp::StompFrame
& frame={...})  Line 101	C++
 	activemq-cppd.dll!activemq::connector::stomp::StompCommandReader::readCommand()  Line 59
C++
 	activemq-cppd.dll!activemq::transport::IOTransport::run()  Line 166 + 0x19 bytes	C++
 	activemq-cppd.dll!activemq::concurrent::Thread::runCallback(void * param=0x003ad328)  Line
152 + 0x13 bytes	C++
 	msvcr80d.dll!_callthreadstartex()  Line 348 + 0xf bytes	C
 	msvcr80d.dll!_threadstartex(void * ptd=0x003adac0)  Line 331	C
 	kernel32.dll!7c80b683() 	
 	[Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]	

The line in BufferedInputStream::read is:

char returnValue = buffer[head++];

There is a local variable called bufferSize with a value of 1024. However, the value of head
is usually much larger than bufferSize (like more than 10000).

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