220 4710 <4ed4041c-a458-4fc8-ae3d-7534d5d261c2@isocpp.org> article Path: news.gmane.org!not-for-mail From: adrien courdavault Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: lock free traits for functions Date: Wed, 29 May 2013 11:43:47 -0700 (PDT) Lines: 68 Approved: news@gmane.org Message-ID: <4ed4041c-a458-4fc8-ae3d-7534d5d261c2@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_6579_17109961.1369853027088" X-Trace: ger.gmane.org 1369853030 27495 80.91.229.3 (29 May 2013 18:43:50 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 May 2013 18:43:50 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDTNJ6MCWUNRBZMYTGGQKGQERCIK3GA@isocpp.org Wed May 29 20:43:51 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-qa0-f71.google.com ([209.85.216.71]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1UhlLi-0002Yp-Dd for gclcip-std-proposals@m.gmane.org; Wed, 29 May 2013 20:43:50 +0200 Original-Received: by mail-qa0-f71.google.com with SMTP id g10sf1061944qah.2 for ; Wed, 29 May 2013 11:43:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-beenthere:date:from:to:message-id:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :x-google-group-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe:content-type; bh=dqo/6WYQEuWTmZJO6RLaXd+VGtUt4xDo1Ae6x+1haX8=; b=SKIRVj8Rj0z36Lae7EK3n4m/0g3xiD0lkin1h9VnOJshN0YEYubX4eCPNuzJzDzUY7 NL0hERwBMB/Ikcg06bscGSlKt88s98Z1VKWYBAJkt657WoTcRY/wesnRj5h1EsNgOsZm aSpPM3AfqZu6rVjiknItgUuYIkl6CecOPlc4OMlsxorx4L0d6+sZajuIluSqL03m3AcN gh/u74hw3/xv+DcPi4JnGNqTioVnAvyW/C2oL9sjqz1qHMe4Hmzf67AYTQ9LB7e95i3j /Tja/U+xd+2fYAnb9b6yaKPiLz/+pfo9mslMm+hFaHW3+nJW7vP0m7t+VyzIbAlQD8AR 111A== X-Received: by 10.224.36.66 with SMTP id s2mr2291566qad.6.1369853029503; Wed, 29 May 2013 11:43:49 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.49.37.71 with SMTP id w7ls9589qej.69.gmail; Wed, 29 May 2013 11:43:47 -0700 (PDT) X-Received: by 10.49.71.135 with SMTP id v7mr347726qeu.22.1369853027874; Wed, 29 May 2013 11:43:47 -0700 (PDT) X-Original-Sender: adrien59cadri@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:4710 Archived-At: ------=_Part_6579_17109961.1369853027088 Content-Type: text/plain; charset=ISO-8859-1 Hi This seams to be a very simplistic request but I think it would be nice to have some traits to know if a function call is lock free or not. It is not usefull for every function, but it could be for the class like thread obviously. Clearly launching a thread is not, but depending on the implementation get_id could be; I say that because in time critical thread you want to know it it is safe to do that. In my case i want to know if I am in the time critical thread, ... problem, if asking for the id of the thread is not lock free I might just have break the rule I wanted to inforce by asking if I was in this thread, what do you think ? NB, if this subject has already been discussed I'm really sorry for the trouble -- --- 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/?hl=en. ------=_Part_6579_17109961.1369853027088 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi

This seams to be a very simplistic request but I thin= k it would be nice to have some traits to know if a function call is lock f= ree or not.
It is not usefull for every function, but it could be= for the class like thread obviously.
Clearly launching a thread = is not, but depending on the implementation get_id could be;

=
I say that because in time critical thread you want to know it i= t is safe to do that.
In my case i want to know if I am in the ti= me critical thread, ... problem, if asking for the id of the thread is not = lock free I might just have break the rule I wanted to inforce by asking if= I was in this thread,

what do you think ?

NB, if this subject has already been discussed I'm really= sorry for the trouble

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