memory leak in qpid::client::Connection
---------------------------------------
Key: QPID-2214
URL: https://issues.apache.org/jira/browse/QPID-2214
Project: Qpid
Issue Type: Bug
Components: C++ Client
Affects Versions: 0.5
Environment: qpid 0.5 on a Debian Linux with gcc 4.3.3.
Reporter: Daniel Etzold
Priority: Critical
Hi,
when executing the code below (connecting and disconnecting to a local broker
without sending any messages) the memory usage increases constantly and
rapidly. After 10.000 iterations several hundred megabytes of resident memory
are used.
When commenting out the lines "connection.open()" and "close()" the memory
usage does not increase.
So, is there a memory leak in Connection open/close?
int
main(int argc, char** argv)
{
while (1) {
qpid::client::Connection connection;
connection.open("localhost", 5672);
connection.close();
}
}
Running my test binary with valgrind (the loop is limited to 100 iterations)
valgrind --leak-check=full ./myqpidtest
it seems that valgrind does not find any memory leaks.
=17321== 76 bytes in 1 blocks are definitely lost in loss record 2 of 2
==17321== at 0x4007ADE: calloc (vg_replace_malloc.c:279)
==17321== by 0x430CD4E7: (within /lib/ld-2.3.6.so)
==17321== by 0x430CD58B: _dl_allocate_tls (in /lib/ld-2.3.6.so)
==17321== by 0x43AE428F: pthread_create@@GLIBC_2.1 (in
/lib/tls/i686/cmov/libpthread-2.3.6.so)
==17321== by 0x43AE4AA7: pthread_cre...@glibc_2.0 (in
/lib/tls/i686/cmov/libpthread-2.3.6.so)
==17321== by 0x4AA3B55:
qpid::sys::ThreadPrivate::ThreadPrivate(qpid::sys::Runnable*) (in
libqpidcommon.so.0.1.0)
==17321== by 0x4AA3682: qpid::sys::Thread::Thread(qpid::sys::Runnable*) (in
libqpidcommon.so.0.1.0)
==17321== by 0x4C8BC6B: qpid::client::TCPConnector::init() (in
libqpidclient.so.0.1.0)
==17321== by 0x4C8040A: qpid::client::ConnectionImpl::open() (in
libqpidclient.so.0.1.0)
==17321== by 0x4C6CD4A:
qpid::client::Connection::open(qpid::client::ConnectionSettings const&) (in
libqpidclient.so.0.1.0)
==17321== by 0x4C6CED2: qpid::client::Connection::open(std::string const&,
int, std::string const&, std::string const&, std::string const&, unsigned
short) (in libqpidclient.so.0.1.0)
==17321== by 0x805EE1E: main (myqpidtest.cpp:281)
==17321==
==17321== LEAK SUMMARY:
==17321== definitely lost: 76 bytes in 1 blocks.
==17321== possibly lost: 0 bytes in 0 blocks.
==17321== still reachable: 48 bytes in 3 blocks.
==17321== suppressed: 0 bytes in 0 blocks.
The 76 bytes which are reported to be definitely lost is constant whether
running the loop 100 time or 1000 times.
Regards,
Daniel
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