From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37433) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XiLKB-0005Kk-VV for qemu-devel@nongnu.org; Sun, 26 Oct 2014 06:45:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XiLK5-0006BR-PS for qemu-devel@nongnu.org; Sun, 26 Oct 2014 06:45:27 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:10697) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XiLK5-0006AZ-3D for qemu-devel@nongnu.org; Sun, 26 Oct 2014 06:45:21 -0400 Message-ID: <544CD0AE.7040802@huawei.com> Date: Sun, 26 Oct 2014 18:45:02 +0800 From: Gonglei MIME-Version: 1.0 References: <1414312958-21967-1-git-send-email-rjones@redhat.com> <1414312958-21967-2-git-send-email-rjones@redhat.com> <544CB78A.3090403@huawei.com> <20141026102248.GS15695@redhat.com> In-Reply-To: <20141026102248.GS15695@redhat.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v1 repost 2] block/curl: Improve type safety of s->timeout. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Richard W.M. Jones" Cc: "kwolf@redhat.com" , "lersek@redhat.com" , "qemu-devel@nongnu.org" , "stefanha@redhat.com" On 2014/10/26 18:22, Richard W.M. Jones wrote: > It's just there to stop unreasonable timeouts or negative numbers. > 100000 s is 27 hours, and no webserver I know of would keep a > connection open that long. Possibly not even the IP stack. > Yes, it is. But 26 hours is OK? I just think we should assure the timeout as reasonable range, absolutely 100000 is too big IMO. > What's the difference between defining a number at the top of the file > to be used once, and placing it exactly where it is used? Except the > former introduces long range dependencies into the code making it > harder to read and more fragile when changed. That's the purpose using macro. If this value is used only one place in the curl.c (or other c files) now and future, you are fine with it. :) Best regards, -Gonglei