^C not getting to sub, sub, sub, sub processes (was: Re: 1.5.4s assertion "hsig_inited" failed)
Rolf Campbell
Endlisnis@mailc.net
Fri Sep 19 18:37:00 GMT 2003
Christopher Faylor wrote:
> On Fri, Aug 15, 2003 at 09:10:12PM -0400, Rolf Campbell wrote:
>
>>Christopher Faylor wrote:
>>
>>>On Mon, Sep 08, 2003 at 04:44:58PM -0400, Rolf Campbell wrote:
>>>
>>>>I started a large build, then hit ^Z. Then "fg", and this is what
>>>>happened:
>>>
>>>A large build shouldn't even recognize the ^Z if you are running this from
>>>the console. Your TERM=xterm below. Are you running this under X?
>>
>>I am using RXVT. Does RXVT set TERM=xterm? That's my only guess, I
>>don't set that variable myself.
>
>
> Huh. I guess so. It does so for me, as well.
>
> This problem sounded familiar so I did a little archive diving. It was
> reported before and I investigated it before. I remember thinking that
> this would be hard to fix owing to a race condition with signals in tty
> code. I can make this fail in various interesting ways even outside of
> the pty/tty code, though. So, I'm investigating why now.
>
> cgf
>
I have a reproducable (at least on my machine) of some ^C handling issues.
#!/bin/python
import sys, os, select
if(int(sys.argv[1]) > 0):
os.system(sys.argv[0] + " %d" % (int(sys.argv[1])-1))
else:
select.select([], [], [], 10)
Try running this as "./deep.py 0", and then, when it's waiting, hit ^C,
it will terminate fine. Now try it as "./deep.py 1", and then hit ^C.
Nothing happens. I see this when I try to cancel my build, but ^C
doesn't work when the process tree is too deep.
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: cygcheck.txt
URL: <http://cygwin.com/pipermail/cygwin/attachments/20030919/47cde412/attachment.txt>
-------------- next part --------------
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
More information about the Cygwin
mailing list