[Python-Dev] Is it a Python bug that the main thread of a process created in a daemon thread is a daemon itself?
solipsis at pitrou.net
Thu Jun 25 21:34:53 CEST 2015
On Thu, 25 Jun 2015 20:23:44 +0300
Elizabeth Shashkova <elizabeth.shashkova at gmail.com> wrote:
> Hello everybody!
> When I call fork() inside a daemon thread, the main thread in the child
> process has the "daemon" property set to True. This is very confusing,
> since the program keeps running while the only thread is a daemon.
> According to the docs, if all the threads are daemons the program should
> exit. Here is an example:
> Is it a bug in the CPython implementation?
Yes, it looks like a bug. You can report it at http://bugs.python.org
> Also let's assume the second example. I have another non-daemon thread
> in the child process and want to detect this situation. Does anybody
> know a way to find such fake daemon threads that are really main
There should really be only one fake daemon thread, since there's
only one main thread. And after calling fork(), you know what the main
thread is :-)
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