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From Timothy Bish <tabish...@gmail.com>
Subject Re: ActiveMQ CPP -- program crashes
Date Fri, 28 Aug 2009 14:08:31 GMT
On Wed, 2009-08-26 at 14:11 -0700, A_MAJUM wrote:
> Hi
> 
> I am trying to use ActiveMQ-CPP in my application. Everything went fine ---
> but all the hell broke loose when I restarted the ActiveMQ broker. When the
> broker is stopped my onException function is invoked. I set a flag there and
> in a different function I close the connection and session objects. It looks
> like ultimately closing a session or connection will try to flush the socket
> output stream --- this gives rise to broken pipe error and my application
> crashes.
> 
> Please help me!! I cannot proceed without fixing this issue as it makes our
> product extremely unreliable. If there is any work-around, please let me
> know. I went through the forum found some similar issues, but not exactly
> like my case. Those issues are old too.
> 
> Note that I can reproduce this issue EVERY SINGLE TIME.
> 
> I am attaching a small program to reproduce it. I cut down the chat example
> to the bare minimum and tried to recreate the issue in cleanup(). After
> starting the program I stopped the broker. Although no broken pipe is
> displayed on the screen it stopped suddenly without going through the entire
> cleanup() function. The gdb shows there is a broken pipe problem (trace is
> given below).
> 
> I am using --
> 
> 1. activemq 5.20
> 2. activemq-CPP 3.0.1
> 3. apr 1.3.5
> 4. apr-util 1.3.8
> 5. Fedora core 9
> 

I haven't been able to reproduce the error.  If you continue to have
problems then I'd recommend you open a new Issue in Jira and attach any
code samples that would be of use in reproducing the problem so it
doesn't get lost.

Regards
Tim.

> 
> The backtrace of gdb ---
> 
> 
> #0  0x00110416 in __kernel_vsyscall ()
> #1  0x0024b00b in write () from /lib/libc.so.6
> #2  0x0012a1e8 in apr_socket_send (sock=0x8c16620, buf=0x8c0f830 "",
> len=0xbf8fde84) at network_io/unix/sendrecv.c:41
> #3  0x009b26b0 in decaf::net::SocketOutputStream::write (this=0x8c0f130,
> buffer=0x8c0f830 "", offset=0, len=50) at
> decaf/net/SocketOutputStream.cpp:96
> #4  0x0099747b in decaf::io::BufferedOutputStream::emptyBuffer
> (this=0x8c0f778) at decaf/io/BufferedOutputStream.cpp:96
> #5  0x00997b7d in decaf::io::BufferedOutputStream::flush (this=0x8c0f778) at
> decaf/io/BufferedOutputStream.cpp:113
> #6  0x00801e90 in decaf::io::FilterOutputStream::flush (this=0x8c0fca8) at
> ./decaf/io/FilterOutputStream.h:189
> #7  0x008327df in activemq::transport::IOTransport::oneway (this=0x8c0efa0,
> command=@0xbf8fe144) at activemq/transport/IOTransport.cpp:131
> #8  0x00833e00 in activemq::transport::TransportFilter::oneway
> (this=0x8c0eff8, command=@0xbf8fe144) at
> ./activemq/transport/TransportFilter.h:129
> #9  0x0087fde8 in
> activemq::wireformat::openwire::OpenWireFormatNegotiator::oneway
> (this=0x8c0fd58, command=@0xbf8fe144)
>     at activemq/wireformat/openwire/OpenWireFormatNegotiator.cpp:76
> #10 0x00837195 in
> activemq::transport::correlator::ResponseCorrelator::oneway (this=0x8c0feb8,
> command=@0xbf8fe144)
>     at activemq/transport/correlator/ResponseCorrelator.cpp:58
> #11 0x007bc657 in activemq::core::ActiveMQConnection::oneway
> (this=0x8c0ff90, command=
>       {<decaf::lang::AtomicRefCounter> = {counter = 0xbf8fe138},
> _vptr.Pointer = 0xbf8fe144, value = 0x13354a}) at
> activemq/core/ActiveMQConnection.cpp:547
> #12 0x007bde96 in activemq::core::ActiveMQConnection::disposeOf
> (this=0x8c0ff90, objectId=@0xbf8fe1d0) at
> activemq/core/ActiveMQConnection.cpp:597
> #13 0x007ebbc9 in activemq::core::ActiveMQSession::close (this=0x8c3cb68) at
> activemq/core/ActiveMQSession.cpp:155
> #14 0x0804975d in HelloWorldProducer::cleanup ()
> #15 0x08049ce1 in HelloWorldProducer::run ()
> #16 0x080491a8 in main ()
> 
> 
> 
> thanks in advance
> Abhi  http://www.nabble.com/file/p25158290/producer.cpp producer.cpp 
-- 
Tim Bish
http://fusesource.com
http://timbish.blogspot.com/




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