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Re: Bug#593426: zsh: Status of background jobs not updated

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From: Jilles Tjoelker <jilles@xxxxxxxx>
To: Peter Stephenson <p.w.stephenson@xxxxxxxxxxxx>, zsh-workers@xxxxxxx
Subject: Re: Bug#593426: zsh: Status of background jobs not updated
Date: Fri, 20 Aug 2010 00:14:42 +0200
Cc: 593426@xxxxxxxxxxxxxxx
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> [continuing a stopped background job using kill is not reflected in the
> output of jobs]

I think hooking into the kill builtin is the wrong way to fix this.
Instead, use the facilities provided by modern systems which can notify
you if a child process continues. These are si_code CLD_CONTINUED for
SIGCHLD and the WCONTINUED flag and WIFCONTINUED() macro for waitpid().
Some systems do not provide these, and may not even provide queuing and
siginfo for SIGCHLD, so the latter approach seems best. The WCONTINUED
stuff can then be #ifdef'ed out for systems that do not support it.

-- 
Jilles Tjoelker

Follow-Ups:
- Re: Bug#593426: zsh: Status of background jobs not updated
  - From: Bart Schaefer

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