From owner-freebsd-hackers@FreeBSD.ORG  Tue Mar  6 13:18:42 2012
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 96284106564A
	for <freebsd-hackers@freebsd.org>; Tue,  6 Mar 2012 13:18:42 +0000 (UTC)
	(envelope-from sem@semmy.ru)
Received: from sunner.semmy.ru (sunner.semmy.ru [IPv6:2a00:14d0:0:20::3])
	by mx1.freebsd.org (Postfix) with ESMTP id 252368FC15
	for <freebsd-hackers@freebsd.org>; Tue,  6 Mar 2012 13:18:41 +0000 (UTC)
Received: from dhcp170-40-red.yandex.net ([95.108.170.40])
	by sunner.semmy.ru with esmtpsa (TLSv1:CAMELLIA256-SHA:256)
	(Exim 4.77 (FreeBSD)) (envelope-from <sem@semmy.ru>)
	id 1S4uHn-000FLp-LA; Tue, 06 Mar 2012 17:18:39 +0400
Message-ID: <4F560EAF.40001@semmy.ru>
Date: Tue, 06 Mar 2012 17:18:39 +0400
From: Sergey Matveychuk <sem@semmy.ru>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
	rv:10.0.2) Gecko/20120216 Thunderbird/10.0.2
MIME-Version: 1.0
To: Markiyan Kushnir <markiyan.kushnir@gmail.com>
References: <4F550227.2010006@FreeBSD.org> <4F5528BF.9030109@gmail.com>
In-Reply-To: <4F5528BF.9030109@gmail.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Mailman-Approved-At: Tue, 06 Mar 2012 13:41:11 +0000
Cc: freebsd-hackers@freebsd.org
Subject: Re: watching for a directory with kqueue
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 06 Mar 2012 13:18:42 -0000

06.03.2012 0:57, Markiyan Kushnir wrote:
> On 05.03.2012 20:12, Sergey Matveychuk wrote:
>> Hi.
>>
>> I've met a problem with the subj. Could you help?
>>
>> I'm watching for a directory:
>> EV_SET(kq_change_list, fd, EVFILT_VNODE,
>> EV_ADD | EV_ENABLE | EV_ONESHOT,
>> NOTE_DELETE | NOTE_WRITE | NOTE_EXTEND | NOTE_ATTRIB,
>> 0, 0);
>>
>> When the directory changed, I read its contens with opendir, like that:
>> struct kq_event kq_event[1000];
>> ...
>> while(1) {
>> n = kevent(kq, kq_change_list, chlist_used, kq_event, 1000, NULL);
>> for(i = 0; i < n; i++) {
>> if(kq_event[i].fflags & NOTE_EXTEND || kq_event[i].fflags & NOTE_WRITE) {
>> opendir(.....)
>>
>> It works when I create a few files (1-3), but when I create 10 files
>> with touch(1) I see only 3-6 files with opendir. I've got only one event
>> with kevent() (n=1). Looks like I should got a few events, but I did
>> not. Could you give an advice how to get all created files?
>
> Try to put some delay (~10ms) after your call to kevent().
>

Not enough smooth for me, but works.