C++: client request memory leak on windows
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Key: QPID-1952
URL: https://issues.apache.org/jira/browse/QPID-1952
Project: Qpid
Issue Type: Bug
Components: C++ Client
Affects Versions: 0.5
Environment: Windows XP Pro w/SP3
Reporter: David Rennalls
I'm experiencing a memory leak when using the client library on Windows (0.5
release) when sending a single request. From what debugging I've done so far it
looks like the The AsynchIO object used by the TCPConnector is not being
deleted. When the connection is being closed aio->queueForDeletion() is called
from TCPConnector::closeInternal().. However in AsynchIO::queueForDeletion()
aio.opsInProgress > 0 so the 'delete this' branch is not done. There are no
more queueForDeletion() calls made on the aio object (after opsInProgress is 0)
and so it never gets deleted. The ConnectionImpl object involved is not cleaned
up either, the shared_ptr to it has a non-zero ref count but I'm guessing it's
related to the AsynchIO object not being cleaned up.
There used to be some code in AsynchIO::completion() that seems like it would
do the necessary delete (see below). It was removed with code changes in
https://issues.apache.org/jira/browse/QPID-1550 because 'It fixed a memory
corruption on the broker side by deleting too early' (from Steve H.)
- // Lock released; ok to delete if all is done.
- if (opsInProgress == 0 && queuedDelete)
- delete this;
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