Message 314928 - Python tracker

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Author	gregory.p.smith
Recipients	Albert.Zeyer, gregory.p.smith, lukasz.langa
Date	2018-04-04.07:13:29
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1522826009.16.0.467229070634.issue31814@psf.upfronthosting.co.za>
In-reply-to

Content
A raw os.posix_spawn() API has been added to 3.7. vfork() would likely all sorts of other problems. It is extremely complicated and implementations have bugs. CERT says never to use it. https://wiki.sei.cmu.edu/confluence/pages/viewpage.action?pageId=87152373 When forking or threading is involved, you are already always at the mercy of all other code running in your process. This is not new. That some C/C++ libraries misuse pthread_atfork() is not a surprise. But the bug is theirs. We should not try to paper over others C and system call mistakes. Their code needs fixing.

A raw os.posix_spawn() API has been added to 3.7.

vfork() would likely all sorts of other problems.  It is extremely complicated and implementations have bugs.  CERT says never to use it.
  https://wiki.sei.cmu.edu/confluence/pages/viewpage.action?pageId=87152373

When forking or threading is involved, you are already always at the mercy of all other code running in your process.  This is not new.

That some C/C++ libraries misuse pthread_atfork() is not a surprise.  But the bug is theirs.

We should not try to paper over others C and system call mistakes.  Their code needs fixing.

History
Date	User	Action	Args
2018-04-04 07:13:29	gregory.p.smith	set	recipients: + gregory.p.smith, lukasz.langa, Albert.Zeyer
2018-04-04 07:13:29	gregory.p.smith	set	messageid: <1522826009.16.0.467229070634.issue31814@psf.upfronthosting.co.za>
2018-04-04 07:13:29	gregory.p.smith	link	issue31814 messages
2018-04-04 07:13:29	gregory.p.smith	create