From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=BAYES_20,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13E08C433ED for ; Fri, 7 May 2021 10:43:14 +0000 (UTC) Received: from lists.lttng.org (lists.lttng.org [167.114.26.123]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 065DB61075 for ; Fri, 7 May 2021 10:43:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 065DB61075 Authentication-Results: mail.kernel.org; dmarc=pass (p=none dis=none) header.from=lists.lttng.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lttng-dev-bounces@lists.lttng.org Received: from lists-lttng01.efficios.com (localhost [IPv6:::1]) by lists.lttng.org (Postfix) with ESMTP id 4Fc6VQ6PvQz1jhZ; Fri, 7 May 2021 06:43:10 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lists.lttng.org; s=default; t=1620384191; bh=bQyk7vj3hoy3yzmIs7KRlRcjOwrDAMXv1o4K//rLKOY=; h=To:Cc:Date:In-Reply-To:References:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From:Reply-To:From; b=Bw+sCYIGi3zleNeUUT+cxSMBrYZPVd2H7nI0uyCqxCJBRjbsPopq7c6bxTlERvvor XZMBUYvBd5L9YGpA4hwdq0Yd+SPVvlV/2vkOH1AS/nzfsPWfRu7P2WiDOrvOs0VvZy qxDmyP3Noghod7bjyUdolckE3IVEOIx7kRHfcE1azP8edJLKYAGg9YFoQ0fwfn+zLX Aa9+4ppOtf/YUJ7TOgjRm0j1NgpsuOIpoccMWNtBMaxD66L2iYD2U171AOlR3nPoU8 yQUsh7sbq19qxiNjvvlI2UHzlN1LocxQGHkJSWHjeYDF4xyycZUsUFv6+5GwgXl0xY 4QJIbQmlkqL8Q== Received: from mail.kdab.com (mail.kdab.com [176.9.126.58]) by lists.lttng.org (Postfix) with ESMTPS id 4Fc6VN5Zv8z1jhX for ; Fri, 7 May 2021 06:43:08 -0400 (EDT) X-Virus-Scanned: amavisd-new at kdab.com To: lttng-dev@lists.lttng.org Cc: bhanu kiran chaluvadi Date: Fri, 07 May 2021 12:30:07 +0200 Message-ID: <33760007.sq35sl3qWi@milian-workstation> Organization: KDAB In-Reply-To: References: MIME-Version: 1.0 Subject: Re: [lttng-dev] How to trace a memory leak in my application using LTTng X-BeenThere: lttng-dev@lists.lttng.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: LTTng development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Milian Wolff via lttng-dev Reply-To: Milian Wolff Content-Type: multipart/mixed; boundary="===============0465502351217367161==" Errors-To: lttng-dev-bounces@lists.lttng.org Sender: "lttng-dev" --===============0465502351217367161== Content-Type: multipart/signed; boundary="nextPart2533869.yfGodxQqnx"; micalg="sha256"; protocol="application/pkcs7-signature" --nextPart2533869.yfGodxQqnx Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" On Mittwoch, 5. Mai 2021 12:36:06 CEST bhanu kiran chaluvadi via lttng-dev wrote: > Hi, > > I have a memory leak some where in my c++ application. Since it was > written in c++98 there are lot of pointer passed back and forth and there > is no clear ownership of the pointers. I was wondering if it's possible to > check for memory leak and give a value sections to probe for the leak using > LTTng ? Since i am new, Can you also point me to some sample example to > track memory leak, in case if they are available or can you provide some > instructions to use LTTng in order to trace the leak. While it's probably possible to leverage LTTng for this purpose, I don't think it's worthwhile to do so. Better start off with a ready-made tool for this purpose, such as heaptrack, LSAN or valgrind's memcheck. Cheers -- Milian Wolff | milian.wolff@kdab.com | Senior Software Engineer KDAB (Deutschland) GmbH, a KDAB Group company Tel: +49-30-521325470 KDAB - The Qt, C++ and OpenGL Experts --nextPart2533869.yfGodxQqnx Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEekw ggWBMIIEaaADAgECAhA5ckQ6+SK3UdfTbBDdMTWVMA0GCSqGSIb3DQEBDAUAMHsxCzAJBgNVBAYT AkdCMRswGQYDVQQIDBJHcmVhdGVyIE1hbmNoZXN0ZXIxEDAOBgNVBAcMB1NhbGZvcmQxGjAYBgNV BAoMEUNvbW9kbyBDQSBMaW1pdGVkMSEwHwYDVQQDDBhBQUEgQ2VydGlmaWNhdGUgU2VydmljZXMw HhcNMTkwMzEyMDAwMDAwWhcNMjgxMjMxMjM1OTU5WjCBiDELMAkGA1UEBhMCVVMxEzARBgNVBAgT Ck5ldyBKZXJzZXkxFDASBgNVBAcTC0plcnNleSBDaXR5MR4wHAYDVQQKExVUaGUgVVNFUlRSVVNU IE5ldHdvcmsxLjAsBgNVBAMTJVVTRVJUcnVzdCBSU0EgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkw ggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQCAEmUXNg7D2wiz0KxXDXbtzSfTTK1Qg2Hi 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