JMeter Critical Section Controller dead lock
About Critical Section Controller:
The Critical Section Controller ensures that its children elements (samplers/controllers, etc.) will be executed by only one thread as a named lock will be taken before executing children of controller.
It's not that hard to create a dead lock and make JMeter stuck
If inside lock A add lock B and inside other lock B add lock A with a few threads there's a dead lock:
Can this be avoided ? and if not can there be a warning for users using this controller ?
Yes indeed using, the way you show it can lead to Java Dead Lock as it's the equivalent of a "synchronized" block in Java.
As JMeter provides a kind of algorithmic way to develop a test, this looks regular to me.
You can potentially raise an enhancement request for detection of Dead lock or provide a PR improving documentation.
I think project will be happy to merge it.
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