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Re: [Nmh-workers] fpurge()
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From: |
Paul Vixie |
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Subject: |
Re: [Nmh-workers] fpurge() |
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Date: |
Tue, 25 Dec 2012 20:56:20 +0000 |
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User-agent: |
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Thunderbird/17.0 |
On 2012-12-25 6:17 PM, David Levine wrote:
> ...
>
> kill (sm_child, SIGKILL);
> discard (sm_rfp);
> discard (sm_wfp);
>
> The discard()'s after killing the child process seem unnecessary to me.
they should be unnecessary, but i'm betting they prevent deadlock in
older pre-Posix systems. ok to nuke 'em as far as i'm concerned --
SIGKILL is not catchable, and Posix requires that processes disconnect
asynchronously from their pipes at death time, even if they were
otherwise blocked in write() waiting for space.