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Posted to dev@qpid.apache.org by "Alan Conway (JIRA)" <ji...@apache.org> on 2014/12/15 18:13:14 UTC
[jira] [Created] (DISPATCH-87) Double load of libqpid-dispatch.so
Alan Conway created DISPATCH-87:
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Summary: Double load of libqpid-dispatch.so
Key: DISPATCH-87
URL: https://issues.apache.org/jira/browse/DISPATCH-87
Project: Qpid Dispatch
Issue Type: Bug
Components: Management Agent, Router Node
Affects Versions: 0.2
Reporter: Alan Conway
Assignee: Alan Conway
Fix For: 0.3
qdrouterd can load the libqpid-dispatch.so twice - once by the executable, again via ctypes. ctypes is supposed to be using the same copy of the library that is loaded by the exe but for some reason is not.
This has been observed to cause crashes, but even when it doesn't it can be observed as follows:
{noformat}$ LD_DEBUG=files router/qdrouterd |& grep libqpid-dispatch
18591: file=libqpid-dispatch.so.0 [0]; needed by router/qdrouterd [0]
18591: file=libqpid-dispatch.so.0 [0]; generating link map
18591: calling init: /home/aconway/dispatch/debug/src/libqpid-dispatch.so.0
18591: file=/usr/local/lib64/libqpid-dispatch.so.0 [0]; dynamically loaded by /usr/lib64/python2.7/lib-dynload/_ctypes.so [0]
18591: file=/usr/local/lib64/libqpid-dispatch.so.0 [0]; generating link map
18591: calling init: /usr/local/lib64/libqpid-dispatch.so.0
18591: opening file=/usr/local/lib64/libqpid-dispatch.so.0 [0]; direct_opencount=1
{noformat}
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