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Date: Sat, 20 Sep 2003 12:09:20 -0400
From: Christopher Faylor <cgf-rcm AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: ^C not getting to sub, sub, sub, sub processes
Message-ID: <20030920160920.GC24929@redhat.com>
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References: <bjipol$tvo$1 AT sea DOT gmane DOT org> <20030908211837 DOT GA9461 AT redhat DOT com> <bjj99a$b5p$1 AT sea DOT gmane DOT org> <20030909011329 DOT GB6708 AT redhat DOT com> <bkfi7u$1e3$1 AT sea DOT gmane DOT org> <20030920011221 DOT GA548 AT redhat DOT com> <bkgh89$48v$1 AT sea DOT gmane DOT org>
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On Fri, Sep 19, 2003 at 11:23:49PM -0400, Rolf Campbell wrote:
>Christopher Faylor wrote:
>>>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.
>>
>>
>>Interesting.  This is an *ancient* bug.  I think it even predates my
>>involvment in cygwin.  It was a bug in the system() call.  It should be
>>fixed in the latest snapshot, available now.
>>
>>Thanks for the test case.
>
>No problem, thank you for the quick fix (works great now).  BTW, I have 
>some machines that are still running 1.3.17, and I could not reproduce 
>this ^C issue on them.  I don't really care, but I thought I would 
>mention it.

Yeah, I'll bet it worked perfectly on B20, too.

cgf

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