Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 23 Feb 2001 10:40:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 23 Feb 2001 10:40:14 -0500 Received: from mta04.mail.au.uu.net ([203.2.192.84]:4502 "EHLO mta04.mail.mel.aone.net.au") by vger.kernel.org with ESMTP id ; Fri, 23 Feb 2001 10:40:03 -0500 Content-Type: text/plain; charset=US-ASCII From: Matt Johnston To: Linux Kernel Development Subject: Re: random PID generation Date: Fri, 23 Feb 2001 23:40:37 +0800 X-Mailer: KMail [version 1.2] In-Reply-To: <27525795B28BD311B28D00500481B7601F0F02@ftrs1.intranet.ftr.nl> In-Reply-To: <27525795B28BD311B28D00500481B7601F0F02@ftrs1.intranet.ftr.nl> MIME-Version: 1.0 Message-Id: <01022323403700.00325@box.caifex.org> Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org OpenBSD has a working implementation, might be worth looking at??? Cheers, Matt Johnston. On Fri, 23 Feb 2001 23:34, Heusden, Folkert van wrote: > >> My code runs trough the whole task_list to see if a chosen pid is > >> already > >> > >> in use or not. > > > > But it doesn't check for a recently used PID. Lets say your system is > > exhausting 1000 PIDs/second, and that there is a window of 20ms between > > you > > > determining which PID to send to, and the recipient process receiving it. > > Ah, I get your point. Good point :o) > > I was thinking: I could split the PIDs up in 2...16383 and 16384-32767 and > then > switch between them when a process ends? nah, that doesn't help it. > hmmm. > I think random increments (instead of last_pid+1) would be the best thing > to do then? > > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/