From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <users-bounces@dpdk.org> Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 6E1C9437A1 for <public@inbox.dpdk.org>; Wed, 27 Dec 2023 05:56:07 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 2E1934029C; Wed, 27 Dec 2023 05:56:07 +0100 (CET) Received: from mail-il1-f173.google.com (mail-il1-f173.google.com [209.85.166.173]) by mails.dpdk.org (Postfix) with ESMTP id 277464027A for <users@dpdk.org>; Wed, 27 Dec 2023 05:56:05 +0100 (CET) Received: by mail-il1-f173.google.com with SMTP id e9e14a558f8ab-35fe994dab5so18131635ab.0 for <users@dpdk.org>; Tue, 26 Dec 2023 20:56:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1703652964; x=1704257764; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=+jfMsHDgvqmOT+v5lFCS09nIGYhJrazLBP1Hcy/a02I=; b=YUKVOzI1sTTyVIlfEODoKor2yJKUWZI0mbka9VFk6ckvpL1E367KEV5ol7CfCt/tIH j5l+qjGcRYFqLkMHF5/2QynkSrGKZ+Hfk/ixTSk/0qc6pPOwYYwgCrfn18WgxOAOCH8N M57B0wmsFkQRklPoKq831XieLOIXlSWunw4rTWGnQtO2+5rgSuKlTgQN3czLb/i2B0Lr LuE/NNwe5D7EkDhKOhD8oFQYJqDSFAXjCFYrDKvS6F1uramGQgqyT042hvVqyBRSzq+j Ai0hc0QBJ8sHEOOFDHomAw36gYGbg7YfEAXHj3FK7pCUD1SyRwPfuZgppjnlSqw2hkve 4QiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703652964; x=1704257764; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=+jfMsHDgvqmOT+v5lFCS09nIGYhJrazLBP1Hcy/a02I=; b=oWhEpI/GA3c5dCsrO3DqxCRRCdnOA0YogzzYE2EhWmU2vSKVj40uZ0KJLHSGRJJjMU aygLNGrX3JWBrohmLifmzx/TkriRKP3rA4kkmElzxxdDhNTvtPMeNa8qoqD6w2Dfu3hR 7l6gVy1zryyP0bdO3z9ChWSDvf5pAh55G3D62L2bpF/wGj3kdJfHJmjDMWjklhKiNVhL TkrSjK+ABh2KC8l5GvAGFNzeRVSy8HeJe2lcVaTNzjsK8+DI0fXW46LjAsoQ4nV8mJzt MbWU1XZpQyMxT9RzV7vvOK80RK1eWvBWbXcXft0GVU+4nTWY3Roym5yfpWg1roIFR/Pc zMmw== X-Gm-Message-State: AOJu0YwDHWvnFekEV0QJ/ZxB6NBS/guppowNz0fC3wo1lBspLL9gs1e+ 0S5+q8/TeRKPoiHXAYzTk0X1W1Z2IyTrZKx6TH8bz/iMv+U= X-Google-Smtp-Source: AGHT+IFLxL2vpc6WTAlDyggkFUSXig+D3unSgf0Tchugi4fMezG7pXtWychhzz+yNKozogmIGHOj2A== X-Received: by 2002:a05:6e02:1a4a:b0:35f:f891:b5e1 with SMTP id u10-20020a056e021a4a00b0035ff891b5e1mr10341467ilv.23.1703652964567; Tue, 26 Dec 2023 20:56:04 -0800 (PST) Received: from hermes.local (204-195-123-141.wavecable.com. [204.195.123.141]) by smtp.gmail.com with ESMTPSA id x7-20020a170902ec8700b001d08e08003esm10934091plg.174.2023.12.26.20.56.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Dec 2023 20:56:04 -0800 (PST) Date: Tue, 26 Dec 2023 20:56:02 -0800 From: Stephen Hemminger <stephen@networkplumber.org> To: "Nicolson Ken (=?UTF-8?B?44OL44Kz44Or44K944OzIOOCseODsw==?=)" <ken.nicolson@jp.panasonic.com> Cc: "users@dpdk.org" <users@dpdk.org> Subject: Re: Detecting if rte_eal_init() has already been called Message-ID: <20231226205602.56496841@hermes.local> In-Reply-To: <OSZPR01MB774835807CDC015C94EDB655BC9FA@OSZPR01MB7748.jpnprd01.prod.outlook.com> References: <OSZPR01MB774835807CDC015C94EDB655BC9FA@OSZPR01MB7748.jpnprd01.prod.outlook.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK usage discussions <users.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/users>, <mailto:users-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/users/> List-Post: <mailto:users@dpdk.org> List-Help: <mailto:users-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/users>, <mailto:users-request@dpdk.org?subject=subscribe> Errors-To: users-bounces@dpdk.org On Wed, 27 Dec 2023 03:54:12 +0000 Nicolson Ken (=E3=83=8B=E3=82=B3=E3=83=AB=E3=82=BD=E3=83=B3 =E3=82=B1=E3=83= =B3) <ken.nicolson@jp.panasonic.com> wrote: > Hi all, >=20 > I'm loading two semi-independent DPDK-ready shared libraries into a maste= r process. If both call rte_eal_init() I get a fatal error about calling it= a second time. I tried the rte_eal_primary_proc_alive(NULL) API, but that = failed to detect that the other library had already called rte_eal_init(). >=20 > I feel there should be a simple rte_eal_is_inited()-like API somewhere, b= ut I cannot find it. >=20 > Note, I cannot easily change the master process as it is a third-party to= ol that knows nothing about DPDK. For now I am just relying on the order of= loading the libraries and skipping rte_eal_init() on the second. >=20 > Thanks, > Ken Libraries should not be calling rte_eal_init()! Even if you fix the init side, the shutdown cleanup handling would be impac= ted. Maybe introduce an initializer and destructor in one place would be a worka= round