X-Spam-Check-By: sourceware.org
From: "David Xiao" <davihigh AT gmail DOT com>
To: <cygwin AT cygwin DOT com>
References: <20070420150318 DOT GA96830 AT ice DOT 42 DOT org> <011e01c7835e$bc3653f0$2e08a8c0 AT CAM DOT ARTIMI DOT COM>
In-Reply-To: <011e01c7835e$bc3653f0$2e08a8c0@CAM.ARTIMI.COM>
Subject: cygwin1.dll POSIX signal emulation mechanism
Date: Fri, 20 Apr 2007 23:49:41 +0800
Message-ID: <002001c78363$8571d7e0$905587a0$@com>
MIME-Version: 1.0
Content-Type: text/plain; 	charset="utf-8"
X-Mailer: Microsoft Office Outlook 12.0
Content-Language: en-us
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id l3KFnoYP030485

In win32 sub-system there is no signal or sig-stack facilities. I am quite curious how cygwin1.dll can do that? What's the mysterious part of it?

As I knew, user-mode thread library such as pthread (POSIX thread) can be implement in use of signal. So signal facilies emulation is quite essential part to full implement a POSIX sub-system like cygwin does.

I wish some can share with experience on this topic: How does cygwin provide signal facilities?

Regards,
David


--
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/