[issue11870] test_3_join_in_forked_from_thread() of test_threading hangs 1 hour on "x86 Ubuntu Shared 3.x"

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

Hum, it's better with the process identifiers. Oh, by the way: the output is not truncated, Python test hangs during the second run :-) Without the debug output, it needs more than 1,000 runs to reproduce the 
 bug (hang).

Testing with flags: sys.flags(debug=0, inspect=0, interactive=0, optimize=0, dont_write_bytecode=0, no_user_site=0, no_site=0, ignore_environment=0, verbose=0, bytes_warning=0, quiet=0)
[  1] test_threading
test_3_join_in_forked_from_thread (test.test_threading.ThreadJoinOnShutdown) ... pid 25114: <OS thread 140143566120704>: <Condition(<_thread.lock object at 0x7f75b0c54e50>, 0)>.notify(): no waiters
pid 25114: MainThread: <Thread(Thread-1, initial)>.start(): starting thread
pid 25114: <OS thread 140143451137792>: <Condition(<_thread.lock object at 0x7f75b0c54b80>, 1)>.notify(): notifying 1 waiter
pid 25114: Thread-1: <Thread(Thread-1, started 140143451137792)>._bootstrap(): thread started
pid 25114: MainThread: <Condition(<_thread.lock object at 0x7f75b0c54b80>, 0)>.wait(): got it
pid 25114: MainThread: <Condition(<_thread.lock object at 0x7f75b0c54cc0>, 0)>.notify(): no waiters
pid 25114: MainThread: <_MainThread(MainThread, stopped 140143566120704)>: waiting for other threads
pid 25114: MainThread: <Thread(Thread-1, started 140143451137792)>.join(): waiting until thread stops
end of main
pid 25116: Thread-1: <Thread(Thread-2, initial)>.start(): starting thread
pid 25116: <OS thread 140143373580032>: <Condition(<_thread.lock object at 0x7f75b0c54b30>, 1)>.notify(): notifying 1 waiter
pid 25116: Thread-2: <Thread(Thread-2, started 140143373580032)>._bootstrap(): thread started
pid 25116: Thread-2: <_MainThread(MainThread, stopped 140143566120704)>.join(): thread stopped
end of thread
pid 25116: Thread-2: <Thread(Thread-2, started 140143373580032)>._bootstrap(): normal return
pid 25116: Thread-1: <Condition(<_thread.lock object at 0x7f75b0c54b30>, 0)>.wait(): got it
pid 25116: Thread-2: <Condition(<_thread.lock object at 0x7f75b0c54b80>, 0)>.notify(): no waiters
pid 25116: Thread-1: <Thread(Thread-2, stopped 140143373580032)>.join(): thread stopped
pid 25116: Thread-1: <Thread(Thread-1, started 140143451137792)>._bootstrap(): normal return
pid 25116: Thread-1: <_RLock owner='Thread-1' count=1>.acquire(True): initial success
pid 25116: Thread-1: <Condition(<_RLock owner='Thread-1' count=1>, 0)>.notify(): no waiters
pid 25116: Thread-1: <_RLock owner=None count=0>.release(): final release
pid 25114: Thread-1: <Thread(Thread-1, started 140143451137792)>._bootstrap(): raised SystemExit
pid 25114: Thread-1: <Condition(<_thread.lock object at 0x7f75b0c54bd0>, 1)>.notify(): notifying 1 waiter
pid 25114: MainThread: <Condition(<_thread.lock object at 0x7f75b0c54bd0>, 0)>.wait(): got it
pid 25114: MainThread: <Thread(Thread-1, stopped 140143451137792)>.join(): thread stopped
pid 25114: MainThread: <_MainThread(MainThread, stopped 140143566120704)>: exiting
[47125 refs]
ok

----------------------------------------------------------------------
Ran 1 test in 0.091s

OK
[  2] test_threading
test_3_join_in_forked_from_thread (test.test_threading.ThreadJoinOnShutdown) ... pid 25118: <OS thread 139664631559936>: <Condition(<_thread.lock object at 0x7f062e0bde50>, 0)>.notify(): no waiters
pid 25118: MainThread: <Thread(Thread-1, initial)>.start(): starting thread
pid 25118: <OS thread 139664516577024>: <Condition(<_thread.lock object at 0x7f062e0bdb80>, 1)>.notify(): notifying 1 waiter
pid 25118: Thread-1: <Thread(Thread-1, started 139664516577024)>._bootstrap(): thread started
pid 25118: MainThread: <Condition(<_thread.lock object at 0x7f062e0bdb80>, 0)>.wait(): got it
pid 25118: MainThread: <Condition(<_thread.lock object at 0x7f062e0bdcc0>, 0)>.notify(): no waiters
pid 25118: MainThread: <_MainThread(MainThread, stopped 139664631559936)>: waiting for other threads
pid 25118: MainThread: <Thread(Thread-1, started 139664516577024)>.join(): waiting until thread stops
end of main

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11870>
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