Author gregory.p.smith
Recipients gregory.p.smith, pitrou
Date 2009-10-16.00:24:03
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Message-id <52dc1c820910151723h7c77ee3ctb1d99302766dce4f@mail.gmail.com>
In-reply-to <1255630552.33.0.974698283953.issue6721@psf.upfronthosting.co.za>
Content
> Antoine Pitrou <pitrou@free.fr> added the comment:
>
> Rather than having a kind of global module registry, locks could keep
> track of what was the last PID, and reinitialize themselves if it changed.
> This is assuming getpid() is fast :-)

Locks can't blindly release themselves because they find themselves
running in another process.

If anything if a lock is held and finds itself running in a new
process any attempt to use the lock should raise an exception so that
the bug is noticed.

I'm not sure a PID check is good enough.  old linux using linuxthreads
had a different pid for every thread, current linux with NPTL is more
like other oses with the same pid for all threads.
History
Date User Action Args
2009-10-16 00:24:09gregory.p.smithsetrecipients: + gregory.p.smith, pitrou
2009-10-16 00:24:04gregory.p.smithlinkissue6721 messages
2009-10-16 00:24:03gregory.p.smithcreate