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identity=mailfrom; envelope-from="adr@SDF.ORG"; helo=mx.sdf.org; client-ip=205.166.94.24 Received: from mx.sdf.org (mx.sdf.org [205.166.94.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by tb-mx0.topicbox.com (Postfix) with ESMTPS for <9fans@9fans.net>; Mon, 20 Jun 2022 00:41:11 -0400 (EDT) (envelope-from adr@SDF.ORG) Received: from sdf.org (IDENT:adr@sdf.org [205.166.94.16]) by mx.sdf.org (8.15.2/8.14.5) with ESMTPS id 25K4f9Xj003394 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits) verified NO) for <9fans@9fans.net>; Mon, 20 Jun 2022 04:41:09 GMT Received: from localhost (adr@localhost) by sdf.org (8.15.2/8.12.8/Submit) with ESMTP id 25K4f9vu024427 for <9fans@9fans.net>; Mon, 20 Jun 2022 04:41:09 GMT Date: Mon, 20 Jun 2022 04:41:09 +0000 (UTC) From: adr To: 9fans <9fans@9fans.net> Subject: Re: [9fans] syscall silently kill processes In-Reply-To: <86055e9ba3dbe8ef06764d6d674830a8ec9404fa.camel@gmail.com> Message-ID: References: <79286caa2ca77ea9b9a1cd64918bdc5f28c8f180.camel@gmail.com> <9e922645a598c69ba14b74e18e8669cc068e9717.camel@gmail.com> <0e5677e6-684d-ff37-c6cd-430d18536070@posixcafe.org> <3889a52-3fe4-c28-1c3b-a73412a489@SDF.ORG> <64a85bad-7ab-fb6-6517-acfafa819bc@SDF.ORG> <658d1591a1abef7c4a85ea3bbf23777b38247893.camel@gmail.com> <1093bce-923f-8147-1f7-ba9e146a112@SDF.ORG> <458b1f1921fb081dc181c1aaa87caea69f5f3760.camel@gmail.com> <1546d1fadc4a03e6772cd93c184a3ea1cf2f7486.camel@gmail.com> <86055e9ba3dbe8ef06764d6d674830a8ec9404fa.camel@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 38496a64-f053-11ec-8724-99e789a1c3e1 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UZmE2ODIzMDQ4YWQ5MGEyMS1NYzAxN2JiNmE1NDQxNWRiNzE1MzM4?= =?UTF-8?B?ZmYyPg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Content-Transfer-Encoding: quoted-printable List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:Mc017bb6a54415db715338ff2:1:Ex4KJ0t8mzf3NYwy4eLEUoPRFXFaOh9NHvOr0YmA-cs On Mon, 20 Jun 2022, andrey100100100@gmail.com wrote: > The note 'alarm' is needed to interrupt the system call on timeout > since system calls to lan 9 can be of a network nature, a notes is > indispensable. > A great example of this is the read() system call on a udp-connection. > How else can this system call be interrupted? Start two processes, one which just make the call, another as a timer to kill it. But I have something in mind for a case like this, when all the processes are going to use the same handler (that's why I was asking). Let me play with it a litle before I share it. adr. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tfa6823048ad90a21-Mc017b= b6a54415db715338ff2 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription