From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f43.google.com (mail-wm0-f43.google.com [74.125.82.43]) by dpdk.org (Postfix) with ESMTP id 02AD72952 for ; Wed, 9 Mar 2016 16:04:36 +0100 (CET) Received: by mail-wm0-f43.google.com with SMTP id n186so182885803wmn.1 for ; Wed, 09 Mar 2016 07:04:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:organization:user-agent :in-reply-to:references:mime-version:content-transfer-encoding; bh=fjkm3huIFxHsKL4GlyZfhvxn88MchxVD5aM72ENUehk=; b=Axrp+zNDxveMPB8hFARtHsA6QOV5KaQIJEFJZgAgFu1xThIKAF+0DyiC+GQdDf3mGN s2cg5PXwzmpr7hF5UnXs7AjEmXujU0AoVzUT+bKAGXhE0TogaM1cTUO7sjfC2R2wnP/r oTWo4BROeLNEyqeyStvSu8Qzul3VWk/+MoCPbAnfv2k2+TMRD3q639w/ND3W3G5NKB7F wGAIfNmbNdM6oZMj+clTn3KNGiM1ApHAYoa6XQw3gqcQSx/cIL6sWLY+KEMR0io6KyTT 8xmo8GL1RQS6XcJvaE9xkRMQWn3nzD3eES7ZPpR0YaBJOVjL0Z+VNu9Z/oYkpY2dMccZ IA5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:organization :user-agent:in-reply-to:references:mime-version :content-transfer-encoding; bh=fjkm3huIFxHsKL4GlyZfhvxn88MchxVD5aM72ENUehk=; b=MU20CacqTgTffKcdkS0X2BROUnuE6Z5mkBZFOnFYEYHCD9lh57wdfQBmJwYX6S7/d/ ZaI2hJ+CrI/GTFiWG0LMQ9t+uqiO5xdcHM4lSXVKmQ4I+S277Exf0oZ2jtKr/FEDg0xY Qmta7bD7kNh+NzP7zLiBUe55XjGfWMsDf8xT5l48hyO6jXxQYNcgzynJ6AsWg5H0708c oLSH+axQZaC9/xwGfXtPG9X0degmX380vlB2v0imKQHuRG5lv1ZvedlmHgR7DnajDO/Y 4yjxh/PmK5WyCK+ruEPw+PDi6SAJhAYVuBnmMgSlJwpG0/6rqohjKcd2CbU7lLElvfWX KpOw== X-Gm-Message-State: AD7BkJKyON4lwKlRivzXJyxfq3kdgvVCRbFIvK90YOnYTbQUXuVs32tILgV0AWOn//nzS3dG X-Received: by 10.28.138.198 with SMTP id m189mr26013188wmd.19.1457535875659; Wed, 09 Mar 2016 07:04:35 -0800 (PST) Received: from xps13.localnet (171.36.101.84.rev.sfr.net. [84.101.36.171]) by smtp.gmail.com with ESMTPSA id w125sm8731344wmw.18.2016.03.09.07.04.34 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 09 Mar 2016 07:04:34 -0800 (PST) From: Thomas Monjalon To: Harry van Haaren Date: Wed, 09 Mar 2016 16:02:55 +0100 Message-ID: <1840042.mxEoybge3f@xps13> Organization: 6WIND User-Agent: KMail/4.14.10 (Linux/4.1.6-1-ARCH; KDE/4.14.11; x86_64; ; ) In-Reply-To: <1457530645-14776-3-git-send-email-harry.van.haaren@intel.com> References: <1457518362-32762-1-git-send-email-harry.van.haaren@intel.com> <1457530645-14776-1-git-send-email-harry.van.haaren@intel.com> <1457530645-14776-3-git-send-email-harry.van.haaren@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Cc: dev@dpdk.org Subject: Re: [dpdk-dev] [PATCH v9 2/2] eal: add function to check if primary proc alive X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Mar 2016 15:04:36 -0000 2016-03-09 13:37, Harry van Haaren: > This patch adds a new function to the EAL API: > int rte_eal_primary_proc_alive(const char *path); > > The function indicates if a primary process is alive right now. > This functionality is implemented by testing for a write- > lock on the config file, and the function tests for a lock. > > The use case for this functionality is that a secondary > process can wait until a primary process starts by polling > the function and waiting. When the primary is running, the > secondary continues to poll to detect if the primary process > has quit unexpectedly, the secondary process can detect this. > > Signed-off-by: Harry van Haaren > Acked-by: Maryam Tahhan > --- > doc/guides/rel_notes/release_16_04.rst | 8 ++++ > lib/librte_eal/bsdapp/eal/Makefile | 1 + > lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 + > lib/librte_eal/common/eal_common_proc.c | 61 +++++++++++++++++++++++++ > lib/librte_eal/common/include/rte_eal.h | 20 +++++++- > lib/librte_eal/linuxapp/eal/Makefile | 3 +- > lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 + > 7 files changed, 93 insertions(+), 2 deletions(-) > create mode 100644 lib/librte_eal/common/eal_common_proc.c > > diff --git a/doc/guides/rel_notes/release_16_04.rst b/doc/guides/rel_notes/release_16_04.rst > index 24f15bf..7d5000f 100644 > --- a/doc/guides/rel_notes/release_16_04.rst > +++ b/doc/guides/rel_notes/release_16_04.rst > @@ -74,6 +74,14 @@ EAL > ~~~ > > > +* **Added rte_eal_primary_proc_alive() function** > + > + A new function ``rte_eal_primary_proc_alive()`` has been added > + to allow the user to detect if a primary process is running. > + Use cases for this feature include fault detection, and monitoring > + using secondary processes. It is not in the right section (fixed issues). Moved and reworded before applying: * **Added function to check primary process state.**