activemq-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Timothy Bish (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQCPP-122) Crash on Windows when rapidly creating and destroying connections
Date Wed, 13 Jun 2007 11:16:34 GMT

    [ https://issues.apache.org/activemq/browse/AMQCPP-122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_39376
] 

Timothy Bish commented on AMQCPP-122:
-------------------------------------

I'll take a look at it and put some more thought into it today at some point.  One thing to
note is that mutex is synchronizable so you could clean up the code by using synchronize(
someMutex ) { }

One thing that I'm considering is that the read should have returned when it was closed prior
to joining the thread but the read logic to detect this looks like its not right and is probably
part of the problem.

> Crash on Windows when rapidly creating and destroying connections
> -----------------------------------------------------------------
>
>                 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: Timothy Bish
>             Fix For: 2.1
>
>         Attachments: IOTransportConcurrentv1.patch
>
>
> 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).

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message