220 20331 <55EEFB75.6010808@gmail.com> article Path: news.gmane.org!not-for-mail From: Andrey Semashev Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: [N3916] Using memory resources in global constructors/destructors Date: Tue, 8 Sep 2015 18:15:01 +0300 Lines: 23 Approved: news@gmane.org Message-ID: <55EEFB75.6010808@gmail.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed X-Trace: ger.gmane.org 1441725353 9146 80.91.229.3 (8 Sep 2015 15:15:53 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 8 Sep 2015 15:15:53 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCXY5TXHWYJRBFHXXOXQKGQELNISYCI@isocpp.org Tue Sep 08 17:15:48 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-lb0-f200.google.com ([209.85.217.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZZKcP-0002PM-Rd for gclcip-std-proposals@m.gmane.org; Tue, 08 Sep 2015 17:15:33 +0200 Original-Received: by lbbmp1 with SMTP id mp1sf37261040lbb.2 for ; Tue, 08 Sep 2015 08:15:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-type:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=6WYH4m1wiqu9j65sJLxe6f9Q3aXddPCkcxYsUmhGSq4=; b=KuDFTKmugzkijWfqzbhN7p1948nsRsCMKEzrICodqkdjVriJJfyw1oC5qMK6c4rF7s V4AxtHhlusrXy0RIqAYyqRmNcUhMToErbLbW5g7WU/tKx+0A/qf1YtGV9ILgUL+6oI88 6MzDbjLZINp9b1+QYu+pCiwIdbnu3et19AgkpHlykKOQi+jqCMdL9e5H/9Zi5J6hL2cK 21dmGuNb/REsHiRQmv/uHZuftDXpNdjNxkX74Cj7WF6Ic6J4sOVeFuep0nhuNyv++961 XKXDdQcKtCEvGONcxphRKlJO4m63eCetCNI9yxNK41OjPhbjGOy9tCI03ZW2xFC+iwvP hHCQ== X-Gm-Message-State: ALoCoQk1qwR8GkcbQWcpUUV24eOCr3E1xdhCWk7AIL+ZVm5L5jQAtJPFEQCfJNpirUe8Tw7x2UbV X-Received: by 10.180.87.199 with SMTP id ba7mr6825442wib.5.1441725333762; Tue, 08 Sep 2015 08:15:33 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.152.37.72 with SMTP id w8ls738669laj.7.gmail; Tue, 08 Sep 2015 08:15:30 -0700 (PDT) X-Received: by 10.152.5.68 with SMTP id q4mr23162597laq.66.1441725330131; Tue, 08 Sep 2015 08:15:30 -0700 (PDT) Original-Received: from mail-la0-x235.google.com (mail-la0-x235.google.com. [2a00:1450:4010:c03::235]) by mx.google.com with ESMTPS id zx2si3505390lbb.82.2015.09.08.08.15.30 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 08 Sep 2015 08:15:30 -0700 (PDT) Received-SPF: pass (google.com: domain of andrey.semashev@gmail.com designates 2a00:1450:4010:c03::235 as permitted sender) client-ip=2a00:1450:4010:c03::235; Original-Received: by lagj9 with SMTP id j9so72251163lag.2 for ; Tue, 08 Sep 2015 08:15:29 -0700 (PDT) X-Received: by 10.112.218.5 with SMTP id pc5mr22968977lbc.97.1441725329570; Tue, 08 Sep 2015 08:15:29 -0700 (PDT) Original-Received: from [192.168.1.2] (broadband-178-140-129-233.nationalcablenetworks.ru. [178.140.129.233]) by smtp.googlemail.com with ESMTPSA id li7sm1005454lab.25.2015.09.08.08.15.28 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 08 Sep 2015 08:15:29 -0700 (PDT) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 X-Original-Sender: andrey.semashev@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of andrey.semashev@gmail.com designates 2a00:1450:4010:c03::235 as permitted sender) smtp.mailfrom=andrey.semashev@gmail.com; dkim=pass header.i=@gmail.com; dmarc=pass (p=NONE dis=NONE) header.from=gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:20331 Archived-At: Hi, In N3916, "Polymorphic Memory Resources, r2", it is said that new_delete_resource() and null_memory_resource() return pointers to the memory resource objects which have statis storage duration. Since these objects derive from memory_resource and have virtual functions, these objects are initialized at dynamic initialization stage and as such cannot be used in global constructors and destructors. Is my understanding correct? If so, I think this is a serious limitation that severily hampers usability of this mechanism. It is quite common to have global strings and containers (directly or as part of user-defined types), which had been safe before. -- --- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an email to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposals/. .