220 15404 article Path: news.gmane.org!not-for-mail From: Ramkumar Revanur Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: get count of std::weak_ptr objects tracking a shared resource Date: Tue, 30 Dec 2014 11:16:33 -0800 (PST) Lines: 80 Approved: news@gmane.org Message-ID: References: <38379535.fdbaY7af1L@tjmaciei-mobl4> <2966691.aBn0dNKpSk@tjmaciei-mobl4> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_6456_1303267363.1419966994013" X-Trace: ger.gmane.org 1419967006 2625 80.91.229.3 (30 Dec 2014 19:16:46 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 30 Dec 2014 19:16:46 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCD4HFPP7UBRBE7UROSQKGQELQHST7A@isocpp.org Tue Dec 30 20:16:40 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ig0-f197.google.com ([209.85.213.197]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Y62HU-0006CU-Ch for gclcip-std-proposals@m.gmane.org; Tue, 30 Dec 2014 20:16:36 +0100 Original-Received: by mail-ig0-f197.google.com with SMTP id r2sf86398579igi.8 for ; Tue, 30 Dec 2014 11:16:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :content-type:x-original-sender:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe; bh=Di68Hq2ZWo84mnkdWbFgroEZ6n84qHUvuDGzNL/p1js=; b=Se2zm7ZMC0BJi3ivSUsvWqI+LgNatVxmENTNAJioSjgU2x14lzZI+cMua5tfETEKxm 7OaDXZrzfno5ac3JdEwqMBSqXccuNNHIf3FJsBkB4/EsJ1g3Zw883c9xYMV3pqY/tBzi BlZFjXQA7TRy+i6xLkRcpI5m/Qpi0G0/exLlWAhSTcwxPf55w+r/ncqStPdcrUDsQD3L 7i/EkdiIWXn2V0guMLZP6nTIVmHLa/T1PgyvJLl+lFhIiGbf6hD9R5+ehT079hEhdVOj jGNjhg+JxCdJfGX6Gbmv4jfAWSfaxuv5mf5ZylKfPpNcnNDSfHdynAM9w3BC4KDXI3cr Ujyw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:message-id:in-reply-to:references :subject:mime-version:content-type:x-original-sender:reply-to :precedence:mailing-list:list-id:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=Di68Hq2ZWo84mnkdWbFgroEZ6n84qHUvuDGzNL/p1js=; b=XBeUu+QTo2RBsaxwfxdnKlT205IcQDSRpjS600/jI4LLwqE8Hi4fbNF4HgXONwjxr5 jAOHXL8B7DgOhQPHykeq42JH6NLPUe8NnQr5Stp/q8xp+9u2cuCkYOHMgcM2MwBhkhSC W/L4bs1XtrVXUcXI0GM4ftcew7iZKX44LKgX/2oqOjuMu5ii4+o9CBZy3oEdIAdFPySp XMVVj2SAG4dQ/Ec1x01cPkilG7fvG5SpS2Xq8W7nMQ+QlFyE/Vgpm0eALk3u1R2mRvk2 5v5G5GYapc9x3CghoqqMWC0zxPvCnBGrLzWfE0W+slDdSzX0BsXotSmAduLqWoRUQBPu M1fw== X-Gm-Message-State: ALoCoQlN3r7ns0pKe6Xdz7o3QOu9+Fn/SLmLLpQZ43B0bAaCO80kPxbeMxhIRpyWswHOLVbqUcHH X-Received: by 10.50.253.196 with SMTP id ac4mr23330240igd.7.1419966995483; Tue, 30 Dec 2014 11:16:35 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.154.196 with SMTP id c187ls6083253ioe.109.gmail; Tue, 30 Dec 2014 11:16:35 -0800 (PST) X-Received: by 10.50.79.170 with SMTP id k10mr28474igx.5.1419966995024; Tue, 30 Dec 2014 11:16:35 -0800 (PST) In-Reply-To: X-Original-Sender: write2ramkumar@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: 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:15404 Archived-At: ------=_Part_6456_1303267363.1419966994013 Content-Type: multipart/alternative; boundary="----=_Part_6457_1828854188.1419966994013" ------=_Part_6457_1828854188.1419966994013 Content-Type: text/plain; charset=UTF-8 On #1, Does it help if more scenarios where this can be used is presented. On #4, I am happy to look in to MS implementation and get back. > Now, getting back to the original proposal: > 1) I don't think its motivation is very strong > 2) I don't think the atomicity argument is a deal-breaker > 3) I'm not overly concerned about compatibility breaks > 4) HOWEVER, concerning (3): I would certainly like to know whether > libc++, libstdc++ and Dinkumware/Microsoft already have a suitable > shared_weak > count and whether the implementation of the proposal is just a matter > of exposing what Howard outlined. > > Without the survey in (4), I don't think the proposal should go > forward. The other > concerns become much more surmountable of (4) doesn't present problems. > -- --- 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/. ------=_Part_6457_1828854188.1419966994013 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On #1, Does it help if more scenarios where this can = be used is presented.

On #4, I am happy to look in= to MS implementation and get back.

 
Now, getting back to the ori= ginal proposal:
1) I don't think its motivation is very strong
2) I don't think the atomicity argument is a deal-breaker
3) I'm not overly concerned about compatibility breaks
4) HOWEVER, concerning (3): I would certainly like to know whether
libc++, libstdc++ and Dinkumware/Microsoft already have a suitable shar= ed_weak
count and whether the implementation of the proposal is just a matter
of exposing what Howard outlined.

Without the survey in (4), I don't think the proposal should go
forward. The other
concerns become much more surmountable of (4) doesn't present problems.

--

---
You received this message because you are subscribed to the Google Groups &= quot;ISO C++ Standard - Future Proposals" group.
To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposa= ls+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/<= /a>.
------=_Part_6457_1828854188.1419966994013-- ------=_Part_6456_1303267363.1419966994013-- .