From: arnold@cc.gatech.edu (Arnold Robbins)
To: rc@archone.tamu.edu
Subject: signal blocking?
Date: Tue, 7 Apr 1992 16:18:00 -0500 [thread overview]
Message-ID: <9204072118.AA00942@terminus.cc.gatech.edu> (raw)
Is there an easy way to block a signal inside a signal handler? I'm using
MGR from BellCore (fast!), and I've been trying to set up a signal handler
for SIGWINCH so that the rows and columns in stty get reset whenever I resize
a window. However, when you do an stty of the rows and columns, MGR
kindly sends you another SIGWINCH too! So I need to temporarily block
SIGWINCH (ignore it basically) inside my SIGWINCH handler.
Here's what I ended up doing. Simple, but not terribly elegant. Note
that the trailing sleep is needed or else the SIGWINCH comes in before
we're ready.
fn handle_winch {
size=() {
fn sigwinch # temporary
stty -echo
echo '^[4I'
size=(`{gawk '{ printf "%d %d\n", $3/12, $4/20 ; exit }'})
stty echo
stty columns $size(1) rows $size(2)
sleep 1
fn sigwinch { handle_winch }
} }
fn sigwinch { handle_winch }
--
Arnold Robbins --- College of Computing | Laundry increases
Georgia Tech, Atlanta, GA 30332-0280 | exponentially in the
Domain: arnold@cc.gatech.edu Phone: +1 404 894 9214 | number of children.
UUCP: uunet!cc.gatech.edu!arnold FAX: +1 404 853 9378 | -- Miriam Robbins
next reply other threads:[~1992-04-07 21:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <91Dec18.230318cst.18887@archone.tamu.edu>
[not found] ` <199201222335.28010.rc.badaj@vetsci.su.oz.au>
[not found] ` <92Jan28.114835cst.18891@archone.tamu.edu>
1992-04-07 21:18 ` Arnold Robbins [this message]
1992-04-07 22:12 ` schwartz
1992-04-08 1:37 ` John Mackin
1992-04-07 22:22 Arnold Robbins
1992-04-07 22:25 Arnold Robbins
1992-04-07 23:24 ` schwartz
1992-04-08 13:18 Chet Ramey
1992-04-08 18:33 ` schwartz
1992-04-08 15:49 Byron Rakitzis
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