From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from omta35.uswest2.a.cloudfilter.net (omta35.uswest2.a.cloudfilter.net [35.89.44.34]) by sourceware.org (Postfix) with ESMTPS id 4A0303858D35 for ; Fri, 8 Sep 2023 16:56:32 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 4A0303858D35 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=tromey.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=tromey.com Received: from eig-obgw-5003a.ext.cloudfilter.net ([10.0.29.159]) by cmsmtp with ESMTP id dt9FqbVnNEoVseemVqKHP6; Fri, 08 Sep 2023 16:56:31 +0000 Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with ESMTPS id eemUqys2GsmQdeemUqwoSv; Fri, 08 Sep 2023 16:56:30 +0000 X-Authority-Analysis: v=2.4 cv=dLK1JcVb c=1 sm=1 tr=0 ts=64fb523e a=ApxJNpeYhEAb1aAlGBBbmA==:117 a=ApxJNpeYhEAb1aAlGBBbmA==:17 a=OWjo9vPv0XrRhIrVQ50Ab3nP57M=:19 a=dLZJa+xiwSxG16/P+YVxDGlgEgI=:19 a=zNV7Rl7Rt7sA:10 a=Qbun_eYptAEA:10 a=CCpqsmhAAAAA:8 a=aS_qpld2zVEUoxjf67sA:9 a=ul9cdbp4aOFLsgKbc677:22 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tromey.com; s=default; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date:References :Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=3ySoLDxRUlRTRfxwpBEEdJKCD24r6PiRFKaFxL5KKvM=; b=vtwb/uOw5bUeql15Cy47p7dqSi /OIzUakUkKShdEQHR/2aeXFh/IGewjOljS+px26iXxJit6wMiw8HeN9vqXfqp+e0xZV3qcWavFPMi u/hcgmlNVYz16931Wclt/7rEl; Received: from 71-211-130-31.hlrn.qwest.net ([71.211.130.31]:60240 helo=murgatroyd) by box5379.bluehost.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1qeemT-0017JU-2U; Fri, 08 Sep 2023 10:56:29 -0600 From: Tom Tromey To: SCOTT FIELDS via Gdb Cc: "gdb@gnu.org" , SCOTT FIELDS Subject: Re: Getting core estimate for "gcore" command and conversely gcore/generate-core-file in GDB References: X-Attribution: Tom Date: Fri, 08 Sep 2023 10:56:29 -0600 In-Reply-To: (SCOTT FIELDS via Gdb's message of "Tue, 5 Sep 2023 18:25:41 +0000") Message-ID: <87il8kli2q.fsf@tromey.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - box5379.bluehost.com X-AntiAbuse: Original Domain - sourceware.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tromey.com X-BWhitelist: no X-Source-IP: 71.211.130.31 X-Source-L: No X-Exim-ID: 1qeemT-0017JU-2U X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 71-211-130-31.hlrn.qwest.net (murgatroyd) [71.211.130.31]:60240 X-Source-Auth: tom+tromey.com X-Email-Count: 3 X-Org: HG=bhshared;ORG=bluehost; X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfPj0q5ndDFul2Mtt56JAlySsebM98ca/lun4GD9bJs3ndZDEeloRep3fCYitSazf5ZdrTnLbivivExVgfIcfA07lJDNZAeUUG4lXt5xjezWc3E62BJEM SoXNBJ2/I30a7v3hm+tkFwf9Y6J8bTmxgIGrjU2/uXZOtp6u0udu/l6cgGKKyhtbpu8woA7qkEPcUg== X-Spam-Status: No, score=-3018.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,JMQ_SPF_NEUTRAL,RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: >>>>> SCOTT FIELDS via Gdb writes: > Are there other commands that will estimate the current space required > for a successful run of "gcore"? Neither "gcore" command or > gcore/generate-core-file command in GDB provide any option to get such > an estimate. > Has there been a request to get this kind of information from "gcore" > as a future enhancement, since it can be difficult to know just how > much space a large running process actually needs. I've never heard such a request. Looking at gcore.c, it seems reasonably possible to implement this. Look at gcore_create_callback to see how it decides how to size the various sections. Without trying, it is hard to say if there is some hidden gotcha. Tom