[Python-Dev] pthreads, fork, import, and execvp

["Martin v. Löwis"]

Neal Norwitz wrote:
>> As I said: I doubt it is the right thing to do. Instead, the lock
>> should get released in the child process if it is held at the
>> point of the fork.
>>
> I'm not sure if this bug can be reproduced now, but the comment in
> warnings.py points to:
> 
>    http://python.org/sf/683658
> 
> I didn't investigate it further.  That might allow someone to create a
> reproducible test case.

That's a different problem, though. Here, the main thread waits for a
child *thread* while holding the import lock. I don't quite understand
the test case given, and I can't make it deadlock anymore (probably
because of Just's fix).

Regards,
Martin