From owner-freebsd-hackers  Mon Mar  6  6:17:32 2000
Delivered-To: freebsd-hackers@freebsd.org
Received: from mgw-out.comptel.com (mgw-out.comptel.com [195.237.145.101])
	by hub.freebsd.org (Postfix) with ESMTP id B9DDA37B723
	for <freebsd-hackers@freebsd.org>; Mon,  6 Mar 2000 06:17:23 -0800 (PST)
	(envelope-from stefan.parvu@comptel.com)
Received: from ctlfw1 ([195.237.145.97]) by mgw-out.comptel.com  with Microsoft SMTPSVC(5.5.1877.197.19);
	 Mon, 6 Mar 2000 16:17:10 +0200
Received: from mgw-in.comptel.com ([192.102.20.150]) by ctlfw1.comptel.com; Mon, 06 Mar 2000 16:15:59 +0000 (EET)
Received: from comptel.com ([195.237.135.174]) by mgw-in.comptel.com  with Microsoft SMTPSVC(5.5.1877.197.19);
	 Mon, 6 Mar 2000 16:17:09 +0200
Message-ID: <38C3BE39.36CDDA55@comptel.com>
Date: Mon, 06 Mar 2000 16:18:33 +0200
From: stefan parvu <stefan.parvu@comptel.com>
Reply-To: stefan.parvu@comptel.com
Organization: Comptel PLC
X-Mailer: Mozilla 4.72 [en] (WinNT; I)
X-Accept-Language: en
MIME-Version: 1.0
To: Titus von Boxberg <tboxberg@schuett-elektronik.de>
Cc: freebsd-hackers@FreeBSD.ORG
Subject: Re: Pthread blocking I/O
References: <38C3BF60.55CF16CC@schuett-inhouse.de>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

Hi,

I have not so much experience using POSIX threads, but we had in
university a project and for I/O to use threads is not so good method.
You slow down the process. 

Some comments? Isn't so?

stefan


Titus von Boxberg wrote:
> 
> Hi,
> 
> I use two threads to do I/O for a process.
> The I/O takes place either on a socket or
> an I/O device (com port) file descriptor.
> 
> Apparently it is not possible to shutdown those
> threads from a third thread, neither using close nor shutdown(2) for
> the socket I/O if the threads are blocked during read.
> 
> What methods can one use to unblock such a blocked-on-read
> thread?
> 
> Thanks,
> 
> TITUS
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-hackers" in the body of the message


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message