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webMethods Knowlegebase : nSessionFactory::close(nSession) hanging when closing (1777826)

Troubleshooting


Problem

nSessionFactory::close( nSession ) eventually calls a Poco::Mutex timed_wait with a hardcoded timeout.

It doesn't happen on Mac, but only Linux.

Stack traces showing the following:

"<code>

#0  0x00007ffff705cd9c in __lll_timedlock_wait () from /lib64/libpthread.so.0

#1  0x00007ffff705780b in pthread_mutex_timedlock () from /lib64/libpthread.so.0

#2  0x00007fff69dae332 in Poco::MutexImpl::tryLockImpl(long) ()

   from /home/test/code/um_test/apps/universal_messaging/c_src/cpp_lib/UMLibs/Lin/lib/x86_64/libPocoFoundation.so.16

#3  0x00007fff6a47697d in Poco::Mutex::tryLock (milliseconds=1000, this=0x7fff8002ff98)

    at /FS/fslocal/jenkins_slave/workspace/9.7_build_cpp_linux_x86-64/changeManagement/Nirvana C++/Nirvana/../../lib/poco-1.4.6p4-all/Foundation/include/Poco/Mutex.h:247

#4  com::pcbsys::nirvana::client::nRunLoop::shutdown (this=<optimized out>)

    at /FS/fslocal/jenkins_slave/workspace/9.7_build_cpp_linux_x86-64/changeManagement/Nirvana C++/Nirvana/client/nRunLoop.cpp:75

#5  0x00007fff6a4846ce in com::pcbsys::nirvana::client::nSession::mainClose (this=0x7fff8002fb80)

    at /FS/fslocal/jenkins_slave/workspace/9.7_build_cpp_linux_x86-64/changeManagement/Nirvana C++/Nirvana/client/nSession.cpp:2080

#6  0x00007fff6a4a048b in com::pcbsys::nirvana::client::nSessionFactory::close (pSession=0x7fff8002fb80)"

If you look at the #3, wanting to stop it from hanging when closing connections.

Basically on MAC when say "close" it immediately returns, but on Linux it hangs for a decent amount of time everytime.

How is it possible to detect what's doing that?

How is it possible to avoid this issue?

Document Location

Worldwide

[{"Line of Business":{"code":"LOB77","label":"Automation Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSVYEV","label":"IBM webMethods Integration"},"ARM Category":[{"code":"a8mKe00000000AQIAY","label":"Software AG Universal Messaging (NUM)"}],"ARM Case Number":"","Platform":[{"code":"PF025","label":"Red Hat Enterprise Linux"}],"Version":"9.7"},{"Line of Business":{"code":"LOB77","label":"Automation Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSFIWYE","label":"IBM webMethods B2B"},"ARM Category":[{"code":"a8mKe00000000AQIAY","label":"Software AG Universal Messaging (NUM)"}],"ARM Case Number":"","Platform":[{"code":"PF025","label":"Red Hat Enterprise Linux"}],"Version":"9.7"}]

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Document Information

Modified date:
20 March 2025

UID

ibm17210466

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