Марк Коренберг <[email protected]> added the comment:
In my case, exception occured in separate thread between the begginig of the
thread and starting loop.
Main thread has a code that correctly stops that separate thread. It just calls
loop_thread.server.server_close() and after that, calls loop_thread.join()
So, if program termination required, but loop was not started, deadlock occur.
Moreover, I can not detect if loop was started. And more more over, if I detect
that loop was not started, there is chance, that it may be started a bit later,
next after my checking. In that case, either loop will not be terminated
correctly (if process exits) or join() may block.
So, please DO NOT ADD detection if loop was started. That will generate
race-conditions in user code. I think it's never needed. If one wants to detect
that, one may use separate variable:
{code}
started = True
xxx.serve_forever()
{code}
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<http://bugs.python.org/issue12463>
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