From owner-freebsd-net@FreeBSD.ORG Wed May 7 22:30:07 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 19B8337B401 for ; Wed, 7 May 2003 22:30:07 -0700 (PDT) Received: from hotmail.com (bay2-f122.bay2.hotmail.com [65.54.247.122]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9771343FDF for ; Wed, 7 May 2003 22:30:06 -0700 (PDT) (envelope-from dsnofe@hotmail.com) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 7 May 2003 22:30:06 -0700 Received: from 202.199.66.121 by by2fd.bay2.hotmail.msn.com with HTTP; Thu, 08 May 2003 05:30:05 GMT X-Originating-IP: [202.199.66.121] X-Originating-Email: [dsnofe@hotmail.com] From: "Snofe Deng" To: neelnatu@yahoo.com, freebsd-net@freebsd.org Date: Thu, 08 May 2003 05:30:05 +0000 Mime-Version: 1.0 Content-Type: text/plain; charset=gb2312; format=flowed Message-ID: X-OriginalArrivalTime: 08 May 2003 05:30:06.0492 (UTC) FILETIME=[E23855C0:01C31522] Subject: Re: Problem about kqueue. X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 May 2003 05:30:07 -0000 thanks. and another problem is that: if i register: {ident, EVFILT_READ} {ident, EVFILT_WRITE} {ident, EVFILT_TIMER} to kq; than I register: {newident, EV_DELETE} , I do not set the filter's value, just set the flags. does this action will remove all pairs which ident equal the newident? thanks! >From: Neelkanth Natu >To: Snofe Deng , freebsd-net@freebsd.org >Subject: Re: Problem about kqueue. >Date: Wed, 7 May 2003 22:21:02 -0700 (PDT) >MIME-Version: 1.0 >Received: from web14204.mail.yahoo.com ([216.136.172.146]) by mc8-f18.law1.hotmail.com with Microsoft SMTPSVC(5.0.2195.5600); Wed, 7 May 2003 22:21:03 -0700 >Received: from [67.112.203.175] by web14204.mail.yahoo.com via HTTP; Wed, 07 May 2003 22:21:02 PDT >X-Message-Info: JGTYoYF78jEHjJx36Oi8+Q1OJDRSDidP >Message-ID: <20030508052102.14548.qmail@web14204.mail.yahoo.com> >In-Reply-To: <20030506200419.D011.DSNOFE@hotmail.com> >Return-Path: neelnatu@yahoo.com >X-OriginalArrivalTime: 08 May 2003 05:21:03.0101 (UTC) FILETIME=[9E5572D0:01C31521] > > >--- Snofe Deng wrote: > > If I register: > > {ident, EVFILT_READ} > > {ident, EVFILT_WRITE} > > {ident, EVFILT_TIMER} > > pairs to kq;and all the piar with same ident which is a socket descriptor. > > then I close(2) ident. Does this mean that all these three > > {ident, filter} pairs will be removed just after the descriptor isclosed? > >No. The EVFILT_TIMER ident has a different namespace than the >file descriptor namespace. The fact that the ident value for TIMER >is the same as the socket fd is of no significance. > > > or should I use: > > EV_SET(&evs, ident, EVFILT_READ, EV_DELETE, 0, 0, NULL) > > EV_SET(&evs, ident, EVFILT_WRITE, EV_DELETE, 0, 0, NULL) > > EV_SET(&evs, ident, EVFILT_TIMER, EV_DELETE, 0, 0, NULL) > > to delete these three pairs? > > > > when I just closed the socket descriptor, the {ident, > > EVFILT_READ/EVFILT_WRITE} are removed. but {ident, EVFILT_TIMER} > > is still returned at next kevent(2) loop. Is it a bug? or why should > > this happend? > >It is not a bug. Calling a close on a file descriptor will remove >all kevents associated with that fd. So you don't have to explicitly >delete them. > >However if you want to remove the EVFILT_TIMER event too, you have >two choices: >- Use EV_ONESHOT to automatically delete the kevent once it is > delivered. >- Explicitly delete it as you are doing above. > >best >Neel > > > > > when I use the second way, things worked ok. > > Any one can help me? > > thanks a lot! > > > > -- > > Snofe Deng > > > > > > _______________________________________________ > > freebsd-net@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-net > > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > > >__________________________________ >Do you Yahoo!? >The New Yahoo! Search - Faster. Easier. Bingo. >http://search.yahoo.com _________________________________________________________________ 与联机的朋友进行交流，请使用 MSN Messenger: http://messenger.msn.com/cn