From: Mathias Fredriksson <mafredri@gmail.com>
To: zsh-workers@zsh.org
Subject: Re: Deadlock when receiving kill-signal from child process
Date: Wed, 5 Aug 2015 03:05:24 +0300 [thread overview]
Message-ID: <CA+=GgY5RnQq030Zkoh-CpOLQEZ3euobbjyim13Fm6=fWBFU2TQ@mail.gmail.com> (raw)
In-Reply-To: <CA+=GgY7uGzCYEKLBzqrt=ct6q72WFC5w1jMB5RDNe60J-wUz=Q@mail.gmail.com>
I can't seem to produce wanted gdb output of the frozen state. If i
run through gdb with "continue&", when it finally freezes, gdb will
only tell me that it is still running and trying to perform operations
gives "Target is executing.". My gdb-foo is way too low to deal with
this (unless someone would like to give me assistance in debugging it
further).
Since gdb was not much help, I have modified the code slightly in
hopes of others being able to reproduce. With this modification I can
produce a deadlock / freeze on every run.
--
child() {
sleep 0.00001
kill -USR1 $$
sleep 0.0001
kill -USR1 $$
}
TRAPUSR1() {
sleep 0.000001
print -n "."
}
for i in {1..10}; do
child &!
done
sleep 0.0000001
sleep 0.000001
sleep 0.00001
sleep 0.0001
sleep 0.001
next prev parent reply other threads:[~2015-08-05 0:06 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-03 11:25 Mathias Fredriksson
2015-08-03 15:52 ` Bart Schaefer
2015-08-03 20:36 ` Mathias Fredriksson
2015-08-03 20:58 ` Bart Schaefer
2015-08-04 21:52 ` Mathias Fredriksson
2015-08-05 0:05 ` Mathias Fredriksson [this message]
2015-08-05 6:53 ` Bart Schaefer
2015-08-05 10:37 ` Mathias Fredriksson
2015-08-05 15:52 ` Bart Schaefer
2015-08-05 16:05 ` Mathias Fredriksson
2015-08-05 18:52 ` Bart Schaefer
2015-08-05 19:11 ` Mathias Fredriksson
2015-08-05 20:20 ` Bart Schaefer
2015-08-05 21:49 ` Mathias Fredriksson
2015-08-06 5:06 ` Bart Schaefer
2015-08-06 8:24 ` Mathias Fredriksson
2015-08-06 15:54 ` Bart Schaefer
2015-08-07 0:45 ` Mathias Fredriksson
2015-08-07 5:39 ` Bart Schaefer
2015-08-09 13:53 ` Mathias Fredriksson
2015-08-09 23:42 ` Bart Schaefer
2015-08-10 0:02 ` Mikael Magnusson
2015-08-10 0:16 ` Mathias Fredriksson
2015-08-10 1:47 ` Bart Schaefer
2015-08-10 2:02 ` Mikael Magnusson
2015-08-10 15:59 ` Bart Schaefer
2015-08-10 17:30 ` Mathias Fredriksson
2015-08-10 0:36 ` Bart Schaefer
2015-08-10 0:29 ` Bart Schaefer
2015-08-10 19:34 ` Bart Schaefer
2015-08-10 21:17 ` Mathias Fredriksson
2015-08-10 22:53 ` Mathias Fredriksson
2015-08-11 0:53 ` Bart Schaefer
2015-08-11 12:17 ` Mathias Fredriksson
2015-08-11 14:38 ` Mathias Fredriksson
2015-08-11 15:07 ` Bart Schaefer
2015-08-11 15:22 ` Mathias Fredriksson
2015-08-11 4:06 ` Running commands in a zpty worker Bart Schaefer
2015-08-11 13:14 ` Mathias Fredriksson
2015-08-11 14:35 ` Mathias Fredriksson
2015-08-11 14:37 ` Bart Schaefer
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='CA+=GgY5RnQq030Zkoh-CpOLQEZ3euobbjyim13Fm6=fWBFU2TQ@mail.gmail.com' \
--to=mafredri@gmail.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).