Author Elad Lahav
Recipients Elad Lahav, dstufft, eric.araujo, gvanrossum, p-ganssle, pitrou, vstinner
Date 2020-03-01.02:51:56
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Message-id <1583031116.43.0.826816943319.issue39763@roundup.psfhosted.org>
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"setup.py doesn't use multiprocessing. multiprocessing is super complex. Would it be possible to write a reproducer which doesn't use multiprocessing?"

But the problem is with the handling of fork() by Python modules, and specifically with multi-threaded fork()s. Without multiple processes there is no issue.

And setup.py does use use multiple processes via a thread pool, where each thread calls fork(), if it detects that "make" was invoked with the parallel (-j) option.
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Date User Action Args
2020-03-01 02:51:56Elad Lahavsetrecipients: + Elad Lahav, gvanrossum, pitrou, vstinner, eric.araujo, dstufft, p-ganssle
2020-03-01 02:51:56Elad Lahavsetmessageid: <1583031116.43.0.826816943319.issue39763@roundup.psfhosted.org>
2020-03-01 02:51:56Elad Lahavlinkissue39763 messages
2020-03-01 02:51:56Elad Lahavcreate