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Date:	Tue, 01 Apr 2008 16:25:18 -0400
From:	"Larry Hall (Cygwin)" <reply-to-list-only-lh AT cygwin DOT com>
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Subject:	Re: lost SIGTERM signal handler and winpcap....
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James Abley wrote:
> On 28/03/2008, S A wrote:
>>  Here's the really strange part:
>>
>>  if I do an strace on my application, then my signal handler
>>  gets invoked correctly!! Can't explain this.
> 
> c.f. Heisenbug [1]. It's common enough, but very annoying. Gives you
> another avenue to explore though. What does strace do to the
> environment that causes the problem to disappear?

That's simple.  strace is a Windows app, not a Cygwin app.  So it doesn't
have the Cygwin signal semantics.

You'll probably get a better feel for the differences here if you take a
look at the Cygwin doc:

<http://cygwin.com/cygwin-ug-net/highlights.html#ov-hi-signals>

Gritty details can be found in 'how-signals-work.txt' the 'cygwin'
source directory.


-- 
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
216 Dalton Rd.                          (508) 893-9889 - FAX
Holliston, MA 01746

_____________________________________________________________________

A: Yes.
 > Q: Are you sure?
 >> A: Because it reverses the logical flow of conversation.
 >>> Q: Why is top posting annoying in email?

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