Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!cs.utexas.edu!cse!texas!manohar
From: manohar@csl.dl.nec.com (mun o her)
Newsgroups: comp.unix.wizards
Subject: How do you catch a signal without terminating the process ?
Keywords: SIgnal, Process
Message-ID: <1991Jun5.215644.20581@csl.dl.nec.com>
Date: 5 Jun 91 21:56:44 GMT
Sender: manohar@csl.dl.nec.com (mun o her)
Organization: NEC America, C & C Software Development Lab
Lines: 23

Server1 = Original Server ( something similar to inetd)
Server2 = Effective current Server.


Assume that we are writing a program to implement a concurrent server. 
Assume that Server1 spawns a Server2 when the client wants the connection
and Server1 goes back to the accept state. When the Server2 terminates as a 
result of the termination of client. The  Server1 must be notified of its
death so that it can execute wait( to get rid of zombie of Server2). If Signal
Handler is used to catch SIGCHLD the accept (Server1)  is interrupted and the
PROBLEM is that the 'whole program' dies. The intention is to resume accept
state of Server1. The question is How do you PREVENT Server1 from dieing 
and resume accept state.


Any suggestion will be greatly appreciated.


-- 
My Life is like a boat in a dry river. I didnot want to drag the boat out, I 
wanted to give it a river.
          ----Boris Pasternak's(of Dr. Zhivago's fame) letter to Mayor Kowaski
Manohar S. Gudavalli              ||Internet: manohar@csl.dl.nec.com