A.59 library(thread_pool): Resource bounded thread management
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Availability::- use_module(library(thread_pool)).
Sourceworker_exitted(+PoolName, +WorkerId, :AtExit)
It is possible that’__thread_pool_manager' no longer exists while closing down the process because the manager was killed before the worker.
To be done
Find a way to discover that we are terminating Prolog.