From: Vincent Lefevre <vincent@vinc17.net>
To: zsh-workers@zsh.org
Cc: Joey Pabalinas <joeypabalinas@gmail.com>,
Bart Schaefer <schaefer@brasslantern.com>,
Peter Stephenson <p.w.stephenson@ntlworld.com>
Subject: Re: long-standing tty related issue: wrapped Emacs not suspended
Date: Sun, 23 Sep 2018 09:21:27 +0200 [thread overview]
Message-ID: <20180923072127.GA25305@zira.vinc17.org> (raw)
In-Reply-To: <20180922212732.aayiipriqquxj7tf@gmail.com>
On 2018-09-22 11:27:32 -1000, Joey Pabalinas wrote:
> On Sat, Sep 22, 2018 at 08:54:48PM +0200, Vincent Lefevre wrote:
> > A SIGCONT handler can be useful for programs running under
> > Grid Engine (together with a SIGUSR1 handler, as this signal
> > is sent shortly before SIGSTOP).
>
> This assumes that you will always receive USR1 before every STOP, but
> since STOP is uncatchable like KILL, this may not always happen. Imagine
> an external process sendind it without sending USR1 first, and suddenly your
> assumption is no longer true.
Under the Grid Engine usage, the user should make sure that this never
happens, or this could be seen as a usage error (just like sending a
SIGKILL for no reasons would also be an error).
Now, if the program was started by an interactive shell, I assume
that a SIGCONT can be fine: the handler should be able to detect
that it is not under the specific SIGUSR1 / SIGCONT usage.
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
next prev parent reply other threads:[~2018-09-23 7:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-20 12:30 Vincent Lefevre
2018-09-20 15:43 ` Joey Pabalinas
2018-09-20 23:10 ` Vincent Lefevre
2018-09-21 16:57 ` Peter Stephenson
2018-09-21 23:14 ` Joey Pabalinas
2018-09-22 1:17 ` Bart Schaefer
2018-09-22 5:51 ` Joey Pabalinas
2018-09-22 18:54 ` Vincent Lefevre
2018-09-22 21:27 ` Joey Pabalinas
2018-09-23 7:21 ` Vincent Lefevre [this message]
2018-09-24 19:51 ` Peter Stephenson
2018-09-25 10:37 ` Peter Stephenson
2018-09-25 17:04 ` Daniel Shahaf
2018-09-26 5:47 ` Bart Schaefer
2018-09-26 13:41 ` Peter Stephenson
2018-09-26 15:17 ` Peter Stephenson
[not found] ` <20180926161708.39be6402@camnpupstephen.cam.scsc.local>
2018-10-02 15:32 ` Peter Stephenson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180923072127.GA25305@zira.vinc17.org \
--to=vincent@vinc17.net \
--cc=joeypabalinas@gmail.com \
--cc=p.w.stephenson@ntlworld.com \
--cc=schaefer@brasslantern.com \
--cc=zsh-workers@zsh.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).