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Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD
From: |
Andreas Schwab |
Subject: |
Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'. |
Date: |
Wed, 20 Jan 2021 09:37:31 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.1.90 (gnu/linux) |
On Jan 20 2021, Eli Zaretskii wrote:
> AFAIU, this is an issue for programs that install a SIGCHLD handler
> immediately before calling pselect. But Emacs has a SIGCHLD handler
> installed at all times, so if the signal hits outside of the pselect
> call, we should be able to detect that reliably.
No, the race between checking for the signal and entering pselect still
exists.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Eli Zaretskii, 2021/01/19
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Philipp Stephani, 2021/01/19
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Eli Zaretskii, 2021/01/19
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'.,
Andreas Schwab <=
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Eli Zaretskii, 2021/01/20
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Andreas Schwab, 2021/01/20
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Eli Zaretskii, 2021/01/20
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Andreas Schwab, 2021/01/20
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Eli Zaretskii, 2021/01/20
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Andreas Schwab, 2021/01/20
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Eli Zaretskii, 2021/01/20
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Andreas Schwab, 2021/01/20
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Eli Zaretskii, 2021/01/20
- Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'., Andreas Schwab, 2021/01/20