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| Date | Tue, 03 Jan 2012 13:31:55 +0100 |
| From | Heiko Wundram <modelnine@modelnine.org> |
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| Subject | Re: Avoid race condition with Popen.send_signal |
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Am 03.01.2012 02:19, schrieb Adam Skutt: > On Jan 2, 6:09 pm, Jérôme<jer...@jolimont.fr> wrote: >> What is the clean way to avoid this race condition ? > > The fundamental race condition cannot be removed nor avoided. Ideally, > avoid the need to send the subprocess a signal in the first place. If > it cannot be avoided, then trap the exception. Yes, it can be avoided, that's what the default SIGCHLD-handling (keeping the process as a zombie until it's explicitly collected by a wait*()) is for, which forces the PID not to be reused by the operating system until the parent has acknowledged (by actively calling wait*()) that the child has terminated. -- --- Heiko.
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Avoid race condition with Popen.send_signal Jérôme <jerome@jolimont.fr> - 2012-01-03 00:09 +0100
Re: Avoid race condition with Popen.send_signal Adam Skutt <askutt@gmail.com> - 2012-01-02 17:19 -0800
Re: Avoid race condition with Popen.send_signal Heiko Wundram <modelnine@modelnine.org> - 2012-01-03 13:31 +0100
Re: Avoid race condition with Popen.send_signal Adam Skutt <askutt@gmail.com> - 2012-01-03 05:40 -0800
Re: Avoid race condition with Popen.send_signal Heiko Wundram <modelnine@modelnine.org> - 2012-01-03 14:56 +0100
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