From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp12.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms5.migadu.com with LMTPS id kPlqBmoNgmLm/AAAbAwnHQ (envelope-from ) for ; Mon, 16 May 2022 10:38:02 +0200 Received: from aspmx1.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp12.migadu.com with LMTPS id WO02BmoNgmLoZgEAauVa8A (envelope-from ) for ; Mon, 16 May 2022 10:38:02 +0200 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id DE45D1925C for ; Mon, 16 May 2022 10:38:01 +0200 (CEST) Received: from localhost ([::1]:56114 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nqWEq-0006AC-NZ for larch@yhetil.org; Mon, 16 May 2022 04:38:00 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46760) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nqW4V-0004QK-FG for guix-devel@gnu.org; Mon, 16 May 2022 04:27:19 -0400 Received: from andre.telenet-ops.be ([2a02:1800:120:4::f00:15]:53596) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nqW4S-0001Pi-Ln for guix-devel@gnu.org; Mon, 16 May 2022 04:27:18 -0400 Received: from [IPv6:2a02:2c40:200:b001::1:66ec] ([IPv6:2a02:2c40:200:b001::1:66ec]) by andre.telenet-ops.be with bizsmtp id XLTA2700P48ECPd01LTByV; Mon, 16 May 2022 10:27:12 +0200 Message-ID: <2c1063bd3ece90d2425d5a7f7bcb96759a09b617.camel@telenet.be> Subject: Re: Updating mumi on berlin From: Maxime Devos To: Ludovic =?ISO-8859-1?Q?Court=E8s?= , Thiago Jung Bauermann Cc: Maxim Cournoyer , Kyle Meyer , zimoun , Arun Isaac , guix-devel@gnu.org Date: Mon, 16 May 2022 10:27:05 +0200 In-Reply-To: <878rr2cy13.fsf@gnu.org> References: <87h76l8yp5.fsf@systemreboot.net> <86ee1j2g8l.fsf@gmail.com> <87h76e4w2d.fsf@systemreboot.net> <8735hs9qb2.fsf@gmail.com> <871qxacp8j.fsf@kolabnow.com> <875yml916w.fsf@gmail.com> <87o80cvjdl.fsf@kyleam.com> <877d70wtd7.fsf@kolabnow.com> <87tua4jax8.fsf@gmail.com> <8735hl0yud.fsf@gnu.org> <877d6w96by.fsf@kolabnow.com> <878rr2cy13.fsf@gnu.org> Content-Type: multipart/signed; micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="=-pTHwq6UVkQdlrkpNFXQY" User-Agent: Evolution 3.38.3-1 MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telenet.be; s=r22; t=1652689632; bh=XAOQoVosUzV7VUrklvSQOPuksgcmzTR3AJxI73AIQ2Q=; h=Subject:From:To:Cc:Date:In-Reply-To:References; b=cohWyz2TnnGCKVkNF+26KGwy1ez5lCB5GbT+H6IAb1JPjG3B6zi8Gric4aUQQj9YK F26mA+9NOUd/gqRm/H2WzDVoI8QH/6uf9+uVK9VS9rnf8Kk0VXabWWx9pxDhzYmhSS 9Gf4wZlewfS0/WclsjtCWpGP8NwX54fh0+n7WvVEEohGy9TEF2Tx8//uFOza6WUh5T hVP7Qjp8zCkl7rpKel+vmjSGuJJLqvw97RVdzBJngJt8etSLbo+9ktZjRlbHAw8tS5 w1SJRnF1oBvNZUC5iFjmwqz6M8uqvetk1sYUoRkfUF1kvgvKFsBrWh7A7mPij4G+s0 xYszQgRWBkEmg== Received-SPF: pass client-ip=2a02:1800:120:4::f00:15; envelope-from=maximedevos@telenet.be; helo=andre.telenet-ops.be X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-To: larch@yhetil.org X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1652690281; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; bh=XAOQoVosUzV7VUrklvSQOPuksgcmzTR3AJxI73AIQ2Q=; b=cGjcfSfx6bWGXRlU3XTjAmux1O42KVdT8lEpCWiro5Li0qhRaeKkaAzp+B2IXiZR5Ub6qO 7GM41pBOCtzgrpRQKbSMoP+Q46mcq44vlsAHQ/RDDRMYSE1PcjgVGuvsOPYZ5cyAWYdtEZ lYVlx8VVtIL4jhY0MoeUh12ouerAspk8EDokNWDIGFDFsYy/oeVkSNJfEhKzkzbRJrmHlz EmLLCSY35Hw7B8sWO/VyyPQ8zsD5x727DtnwqNWJjNi3/0TurX0UQP/l9jZO7VKlYYJV/h p49dE8K5WTK96120qy8HyNoOKOz5vu4MdsBcNuNQt9M+S1Ox//xKcPe/T+xeoA== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1652690281; a=rsa-sha256; cv=none; b=FWkgBuXsyPhMRfQvnPmgD2fbeStmKpfBk3N8Mi15WeVx6Ud7tfqBYPV4GsNCq0kEDvVI9u HHILCmKnEJOiZ6lfZ5ggW9m3/5CWpdgE9tYACPdoG5tMLhfQZZR1XmnOosF3sOJcmVJVau ityaL46bakkVMzYcp5FC2Z2Iosi2Y4oBtuTXSwcQcGkNBm0IScgoD0nttNZBRZy2dmGdpi 24zZq+xLfpryU569iDVksKr6kvpUgQPFg/UFwrbyoY7fMlCI2GyNjKYWSVQUpuosRDiR4M CPO4RueplEo48DriaCEf2rnQ6/71lT9GxhazSPZhePB2F5bBM/ZDvr8pzfNduw== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=telenet.be header.s=r22 header.b=cohWyz2T; dmarc=pass (policy=none) header.from=telenet.be; spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -9.73 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=telenet.be header.s=r22 header.b=cohWyz2T; dmarc=pass (policy=none) header.from=telenet.be; spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: DE45D1925C X-Spam-Score: -9.73 X-Migadu-Scanner: scn0.migadu.com X-TUID: 0YH/8Ym/p3Rk --=-pTHwq6UVkQdlrkpNFXQY Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Ludovic Court=C3=A8s schreef op zo 15-05-2022 om 22:59 [+0200]: > How does a basic SIGCHLD handler fare? >=20 > =C2=A0 (sigaction SIGCHLD > =C2=A0=C2=A0=C2=A0 (lambda _ (false-if-exception (waitpid WAIT_ANY WNOHAN= G)))) Will we get two SIGCHLD when two subprocesses exit at the same time, or only a single one? If they are combined to a single SIGCHLD, maybe 'waitpid' needs to be called in a loop so no subprocess is missed.=20 Also, I think only the ECHILD system-error and maybe EINTR needs to be caught here. Greetings, Maxime. --=-pTHwq6UVkQdlrkpNFXQY Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iI0EABYKADUWIQTB8z7iDFKP233XAR9J4+4iGRcl7gUCYoIK2RccbWF4aW1lZGV2 b3NAdGVsZW5ldC5iZQAKCRBJ4+4iGRcl7u+gAP9phVSwimDM+fcrb3cS0OUEUaSj XuPdhtbARklS5MTMTwEAuMxYzlhfP5eZzBjHDvyNq2qz6wRxor56ndiSirwVjQY= =o1dO -----END PGP SIGNATURE----- --=-pTHwq6UVkQdlrkpNFXQY--