220 9307 <5e9bc5fc-f2ae-49dc-95a1-42f83c8748bb@isocpp.org> article Path: news.gmane.org!not-for-mail From: Andrew Tomazos Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Precise Per-Type Cyclic Garbage Collection (DRAFT 1) Date: Tue, 11 Feb 2014 19:27:45 -0800 (PST) Lines: 73 Approved: news@gmane.org Message-ID: <5e9bc5fc-f2ae-49dc-95a1-42f83c8748bb@isocpp.org> References: <11d438f3-2c4c-4545-b93a-5a63090ee8ee@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_5277_9488548.1392175665195" X-Trace: ger.gmane.org 1392175660 19286 80.91.229.3 (12 Feb 2014 03:27:40 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 12 Feb 2014 03:27:40 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBD5KHQXXWYPRBMWU5OLQKGQEUTZKHHY@isocpp.org Wed Feb 12 04:27:49 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-vb0-f70.google.com ([209.85.212.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WDQUF-0001W5-TF for gclcip-std-proposals@m.gmane.org; Wed, 12 Feb 2014 04:27:48 +0100 Original-Received: by mail-vb0-f70.google.com with SMTP id w17sf18797733vbj.9 for ; Tue, 11 Feb 2014 19:27:47 -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 :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe :content-type; bh=MU7ZutN/uPiJeRoUOPUhZq1OBxzshckWrhMil35Chdg=; b=ob69KMCCg7FAqiOTKWkapC/Vr/rEa74WrXs26Y86jUWx1tMVHeDb1t46FIj/sxqf/O eCGHOtFbhDlqQSu0KZXLy+g+G8BYtdjpgAzGaRlX7Mc3taiourL/VBpmKXdHMLn2SJwB MpX63cVYzqbYe++l5FuI8pgcetFK5vKspZaJXu6WxpaYRwRP1pjMINxiR9Fu+aXwFbGP PuDD/FtxjKjmBbBOX5dSzToIoyp718hiHoipHGyn1vIBsGRHpjPzwn/C8bNh7Q6RvcUV XNAq9pTJIP9oriCF9fPwILHfF7zJEpj+grffCHaaQh/Udw5Yl2XwGNQrT0+EiJYubiu/ EYtw== 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:x-original-sender:reply-to:precedence :mailing-list:list-id:list-post:list-help:list-archive :list-subscribe:list-unsubscribe:content-type; bh=MU7ZutN/uPiJeRoUOPUhZq1OBxzshckWrhMil35Chdg=; b=KpzTnDHNwug+imRLvNKMJ8Y8ZrYym9rcH6wcX9yPOnJhp5NJMqt/Dq4uwzTLTrMD4p xUn5o4ykGSKKfrYc10zCkLalloXksBsJeMQGJMBKY7CYo+UzTOLRNJWTmwuamXqRDVfr aH5+LBQU+ntGm7Lw0uYLwwvQk5a0qkgxx3i7/0QynVI+WedS0xOBuxmiwAJ9u1JO61CX ATxwA6rGFUZ9g5/B1SRILKRN32xBPtMRPoJ96u4D2dOSNajDwgKoCxm87/0IuB57HN6x vBrHGJupusYwIgdJ5uOVwww4PeO6YKXONDZrSocK/pVO/8tTYCn6q4mYCDDBFPKj+W3N SCXA== X-Gm-Message-State: ALoCoQlxHAHoI+8Czf14Xq7h+7YJ6bpo2FUfXShmmxFA4Kynf2Zy5joGtw6p3nBMuGLFOzqn3akD X-Received: by 10.52.121.68 with SMTP id li4mr784810vdb.6.1392175667091; Tue, 11 Feb 2014 19:27:47 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.140.98.69 with SMTP id n63ls2491800qge.96.gmail; Tue, 11 Feb 2014 19:27:46 -0800 (PST) X-Received: by 10.140.47.43 with SMTP id l40mr258781qga.11.1392175666492; Tue, 11 Feb 2014 19:27:46 -0800 (PST) In-Reply-To: <11d438f3-2c4c-4545-b93a-5a63090ee8ee@isocpp.org> X-Original-Sender: andrewtomazos@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:9307 Archived-At: ------=_Part_5277_9488548.1392175665195 Content-Type: text/plain; charset=UTF-8 On Tuesday, February 11, 2014 9:26:07 PM UTC+1, Dain Bray wrote: > > What you are describing sounds similar to the way C++/CLI added managed > classes. If you are not familiar with it, you might check that out. > I am familiar, thanks. It is similar in part, but has different goals. What Microsoft was trying to do was modify C++ so it could run on their VM and so use their VM libraries. A small part of that was precise garbage collection. What we are proposing here is some minimal clean additions purely to enable adding a precise garbage collector for a subset of user-nominated types. Perhaps this would be better as a library solution? shared_ptr is basically as good as it gets as a pure library solution, and I compare the differences in the proposal. In any case, something as heavily-demanded as real garbage collection warrants core language additions if needed - and I think the "only pay for what you use" property of my proposal is the right approach. -- --- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. 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On Tuesday, February 11, 2014 9:26:07 PM UTC+1, Dain Bray = wrote:

What= you are describing sounds similar to the way C++/CLI added managed classes= .. If you are not familiar with it, you might check that out.

I am familiar, thanks.  It is similar in part, but has di= fferent goals.  What Microsoft was trying to do was modify C++ so it c= ould run on their VM and so use their VM libraries.  A small part of t= hat was precise garbage collection.  What we are proposing here is som= e minimal clean additions purely to enable adding a precise garbage collect= or for a subset of user-nominated types.

Perhaps this would be better as a library solution?

shared_ptr is basically as good as it gets as a pur= e library solution, and I compare the differences in the proposal.  In= any case, something as heavily-demanded as real garbage collection warrant= s core language additions if needed - and I think the "only pay for what yo= u use" property of my proposal is the right approach.

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