Re: Serial Port Question...

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#537

From: moose
Date: Tue, 11 Aug 1992 15:45

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In article <1992Aug10.193155.14621@usenet.ins.cwru.edu>  
aj681@cleveland.Freenet.Edu (Carlin Wiegner) writes:
> 
> Can multiple applications montior and read/write to the same
> serial or ethernet port?
> CW
> -- 

Sure, for about 3 seconds.  DPSAddFD, which is glue for select(), does not like  
having stuff on the serial port stolen from it between spotting it and getting  
your program to read it.  There are workarounds, but it will usually cause your  
program to hang.  

--
Michael Rutman			|	moose@svcdudes.com
Cubist				|	makes me a NeXT programmer
Software Ventures		|	maker of MicroPhone II
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Message-ID: <1992Aug11.154515.14514@svcdudes.com>

Path: arc1-ca.pugleaf.net!sparky!uunet!psinntp!svc!news

References: <1992Aug10.193155.14621@usenet.ins.cwru.edu>

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Newsgroups: comp.sys.next.programmer
Path: arc1-ca.pugleaf.net!sparky!uunet!psinntp!svc!news
From: moose@svcdudes.com
Subject: Re: Serial Port Question...
Message-ID: <1992Aug11.154515.14514@svcdudes.com>
Sender: news@svcdudes.com
Reply-To: moose@svcdudes.com
Organization: Software Ventures, Inc.
References: <1992Aug10.193155.14621@usenet.ins.cwru.edu>
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Date: Tue, 11 Aug 92 15:45:15 GMT
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