Possible memory leak in activemq::transport::IOTransport::run
-------------------------------------------------------------
Key: AMQCPP-121
URL: https://issues.apache.org/activemq/browse/AMQCPP-121
Project: ActiveMQ C++ Client
Issue Type: Bug
Affects Versions: 2.1
Reporter: Albert Strasheim
Assignee: Nathan Mittler
Fix For: 2.1
There might be a memory leak in activemq::transport::IOTransport::run.
Valgrind says:
==20739== 20 bytes in 1 blocks are definitely lost in loss record 126 of 175
==20739== at 0x4005BA5: operator new(unsigned) (vg_replace_malloc.c:163)
==20739== by 0x4776995:
activemq::connector::openwire::marshal::v2::ResponseMarshaller::createObject()
const (ResponseMarshaller.cpp:40)
==20739== by 0x46A433B:
activemq::connector::openwire::OpenWireFormat::doUnmarshal(activemq::io::DataInputStream*)
(OpenWireFormat.cpp:239)
==20739== by 0x46A48C9:
activemq::connector::openwire::OpenWireFormat::unmarshal(activemq::io::DataInputStream*)
(OpenWireFormat.cpp:185)
==20739== by 0x46A6E5D:
activemq::connector::openwire::OpenWireCommandReader::readCommand()
(OpenWireCommandReader.cpp:71)
==20739== by 0x46D3857: activemq::transport::IOTransport::run()
(IOTransport.cpp:166)
==20739== by 0x4667DE7: activemq::concurrent::Thread::runCallback(void*)
(Thread.cpp:152)
==20739== by 0x4963DA: start_thread (in /lib/libpthread-2.5.so)
==20739== by 0x3F026D: clone (in /lib/libc-2.5.so)
The code looks like this:
void IOTransport::run(){
try{
while( !closed ){
Command* command = reader->readCommand();
fire( command );
}
}
catch( exceptions::ActiveMQException& ex ){ /*...*/ }
catch( ... ){ /*...*/ }
}
What might be happening here is that readCommand succeeds but that fire throws
an exception for some reason. If this happens, command won't be freed.
Not quite sure under what circumstances this happens. If you're not convinced,
I can try to narrow down the code that causes the leak.
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