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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 1E118C433DB for ; Tue, 26 Jan 2021 20:35:03 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 A732422B3B for ; Tue, 26 Jan 2021 20:35:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A732422B3B Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=/uoQzx8QKoXRbK6EMGsdQNdVGQsXb0DXQHi484hVo6M=; b=IuE518K+zL9hLj1FHQ2g2lCwl awYFM3FoAyW7D8MAT0uDfkVcm1tnQCz5gc/HSfzR6/A+Qsb03bUz0uDUa6n9mdaqGUgmsBZW+lClr E03113rkwo7aT29UGMeb4vd7hUixaScx7HPT3NcZq5JhJPvxa8xlR1k7DkX3Fpcg7XAYq3lZf5YAf ii3DtCSnP2j7dbHDqW/gDEshq2VMa0IrU3RA6Lp3YWepS+6hrQHs2pSKdb2fRmOpXTgTr4OArQHxG Nrhoijv1Xr+yY3TYYdLfiB5JylvZjyaMuk1ImEM00xssAFtQEz3gNRub0v+Ks8Pl9YDUr/auXK37x nPE5JSCFw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l4V2v-0001I2-FB; Tue, 26 Jan 2021 20:34:41 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l4V25-0000wd-Po for linux-nvme@lists.infradead.org; Tue, 26 Jan 2021 20:33:54 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1611693225; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qUUR4ospp3N1xLGLKNZx+Tvb3eAI12jMKqQ3pBUMuTs=; b=cI1L0ei7YH5wTRn+MLqxGPnx7bAxi1aRgzwRRu2Kc/amyRaUsBTKpShXt039wNZim5yNZx z2SJAPf4Peas+GuqZ2gsyvHEujtNMq+v/nAE756nrzGJOEawCjDNgu6u0mWqTh0CPOkTBt ui9mPap0Jxelq0EUHA08JwzYERYumdk= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id BDBB8AFF9; Tue, 26 Jan 2021 20:33:45 +0000 (UTC) From: mwilck@suse.com To: Keith Busch , linux-nvme@lists.infradead.org Subject: [PATCH 12/35] monitor: add helpers for __attribute__((cleanup)) Date: Tue, 26 Jan 2021 21:33:01 +0100 Message-Id: <20210126203324.23610-13-mwilck@suse.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210126203324.23610-1-mwilck@suse.com> References: <20210126203324.23610-1-mwilck@suse.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210126_153350_017405_9E63164D X-CRM114-Status: GOOD ( 12.45 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Hannes Reinecke , Chaitanya Kulkarni , Martin Wilck Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Martin Wilck __attribute__((cleanup)) is very helpful but ugly. Try to avoid defining lots of cleanup functions with these macros. Usage: to declare an auto-cleanup variable of type (some_type *), write CLEANUP_FUNC(some_type) void some_func(void) { CLEANUP(some_type, varname) = NULL; ... } Signed-off-by: Martin Wilck --- common.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/common.h b/common.h index 1c214a4..9386ec5 100644 --- a/common.h +++ b/common.h @@ -12,4 +12,16 @@ #define __stringify_1(x...) #x #define __stringify(x...) __stringify_1(x) +#define CLEANUP_FUNC(type) \ +static void __cleanup_ ## type ##_p(type ** __p) \ +{ \ + if (*__p) { \ + free(*__p); \ + *__p = NULL; \ + } \ +} + +#define CLEANUP(__t, __v) \ + __t *__v __attribute__((cleanup(__cleanup_ ## __t ## _p))) + #endif -- 2.29.2 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme