From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on yquem.inria.fr X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=AWL autolearn=disabled version=3.1.3 X-Original-To: caml-list@yquem.inria.fr Delivered-To: caml-list@yquem.inria.fr Received: from mail2-relais-roc.national.inria.fr (mail2-relais-roc.national.inria.fr [192.134.164.83]) by yquem.inria.fr (Postfix) with ESMTP id 10E54BC69 for ; Mon, 22 Oct 2007 21:42:45 +0200 (CEST) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ah4FAKqZHEfQOfEbWmdsb2JhbACBWoxzASA X-IronPort-AV: E=Sophos;i="4.21,313,1188770400"; d="scan'208";a="3481322" Received: from discorde.inria.fr ([192.93.2.38]) by mail2-smtp-roc.national.inria.fr with ESMTP; 22 Oct 2007 21:42:44 +0200 Received: from mail2-relais-roc.national.inria.fr (mail2-relais-roc.national.inria.fr [192.134.164.83]) by discorde.inria.fr (8.13.6/8.13.6) with ESMTP id l9MJgf6G031565 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=OK) for ; Mon, 22 Oct 2007 21:42:44 +0200 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ah4FAKqZHEfQOfEbWmdsb2JhbACBWoxzASA X-IronPort-AV: E=Sophos;i="4.21,313,1188770400"; d="scan'208";a="3481319" Received: from lgb-static-208.57.241.27.mpowercom.net (HELO sanddune.1969web.com) ([208.57.241.27]) by mail2-smtp-roc.national.inria.fr with ESMTP; 22 Oct 2007 21:42:41 +0200 Received: from [10.3.2.21] (zilles.1969web.com [10.3.2.21]) by sanddune.1969web.com (Postfix) with ESMTP id 534BABAD6EC; Mon, 22 Oct 2007 12:42:38 -0700 (PDT) Message-ID: <471CFD24.30805@1969web.com> Date: Mon, 22 Oct 2007 12:42:28 -0700 From: Karl Zilles Organization: 1969 Communications, Inc. User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 To: Orlin Grigorov Cc: caml-list@inria.fr Subject: Re: [Caml-list] How to monitor a specific file for changes References: <20071023052001.517e957e.mle+ocaml@mega-nerd.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Miltered: at discorde with ID 471CFD31.000 by Joe's j-chkmail (http://j-chkmail . ensmp . fr)! X-Spam: no; 0.00; wrote:01 unix:01 unix:01 caml-list:01 let:03 let:03 stat:07 stat:07 it'll:09 previous:10 file:11 file:11 directory:11 changes:12 think:13 Orlin Grigorov wrote: > Oh, here's another idea---every certain amount of time, I just compare > my last saved version of the file to the current one---if different, > there's my event. What do you think? Just stat it. You can stat it every second and never notice any performance issue. In fact you can stat a whole directory of files every second and never notice. It'll work cross platform, and it's easy: let modtime file = let filedata = Unix.stat file in filedata.Unix.st_mtime In a loop, compare the modtime to the previous modtime, then Unix.sleep 1;