220 4743 <51A6EFE6.4030407@wanadoo.fr> article Path: news.gmane.org!not-for-mail From: "Vicente J. Botet Escriba" Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: N3558 :A standardized representation of Asynchronous operation Date: Thu, 30 May 2013 08:21:26 +0200 Lines: 115 Approved: news@gmane.org Message-ID: <51A6EFE6.4030407@wanadoo.fr> References: <519F9E48.7050700@wanadoo.fr> <51A0B7C3.40109@wanadoo.fr> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="------------070705060804030208090906" X-Trace: ger.gmane.org 1369894889 5397 80.91.229.3 (30 May 2013 06:21:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 30 May 2013 06:21:29 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDH67CONY4PBBZ67TOGQKGQEZIODAJY@isocpp.org Thu May 30 08:21:29 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-fa0-f72.google.com ([209.85.161.72]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1UhwEq-0007AX-On for gclcip-std-proposals@m.gmane.org; Thu, 30 May 2013 08:21:28 +0200 Original-Received: by mail-fa0-f72.google.com with SMTP id v1sf7911900fav.11 for ; Wed, 29 May 2013 23:21:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-beenthere:message-id:date:from:user-agent:mime-version:to:subject :references:in-reply-to:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-google-group-id:list-post:list-help:list-archive :list-subscribe:list-unsubscribe:content-type; bh=bgQNnTIVNJM4fUmWFrgOLsoTBcWJjYWCuUrCxCRxo6w=; b=ghW73U4aty80jEUuF5UmJHrqRferjUjPI1tBgLINmEe6xasELrMmpq0BkfdsgPxD0N bekLJylPfuIM29g9B5ZZnjda5v5YdYBnco2BFukSQViYn4w0zNCRZsNHtFfB4AOHNChA /BOnMsEhqte4ZFN9Fn2MfSbBbPcH9MbdURuSunp5/3RVNsQY6bNHqI9HGKAjEzdZDzBQ jI8GR0DQ0rTefWEBRQvo9oBC0/G4Z8a5I6BjXBUdEbPRkbT8K2Xb+CTN+IkPXhv3elnS ka6NFgKV7N99dK7RPDNrUkV13dPjWFro/89EnD9LTAyKCLkt8Ps/70Modpcp5jrfV4+k TUxA== X-Received: by 10.180.189.74 with SMTP id gg10mr2016963wic.4.1369894888220; Wed, 29 May 2013 23:21:28 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.103.67 with SMTP id fu3ls1743550wib.11.canary; Wed, 29 May 2013 23:21:27 -0700 (PDT) X-Received: by 10.180.198.80 with SMTP id ja16mr16715377wic.53.1369894887437; Wed, 29 May 2013 23:21:27 -0700 (PDT) Original-Received: from smtp.smtpout.orange.fr (smtp06.smtpout.orange.fr. [80.12.242.128]) by mx.google.com with ESMTP id bf10si4496072wjc.64.2013.05.29.23.21.27 for ; Wed, 29 May 2013 23:21:27 -0700 (PDT) Received-SPF: neutral (google.com: 80.12.242.128 is neither permitted nor denied by best guess record for domain of vicente.botet@wanadoo.fr) client-ip=80.12.242.128; Original-Received: from pc4.home ([2.11.193.225]) by mwinf5d41 with ME id i6MT1l0014sEqES036MTbk; Thu, 30 May 2013 08:21:27 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:17.0) Gecko/20130509 Thunderbird/17.0.6 In-Reply-To: <51A0B7C3.40109@wanadoo.fr> X-Original-Sender: vicente.botet@wanadoo.fr X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 80.12.242.128 is neither permitted nor denied by best guess record for domain of vicente.botet@wanadoo.fr) smtp.mail=vicente.botet@wanadoo.fr 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:4743 Archived-At: This is a multi-part message in MIME format. --------------070705060804030208090906 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Le 25/05/13 15:08, Vicente J. Botet Escriba a =E9crit : > Le 24/05/13 19:07, Vicente J. Botet Escriba a =E9crit : >> Hi, >> >> What is the rationale for when_all to return=20 >> future>> instead of future>? >> What is the rationale for when_any to return=20 >> future>> instead of future> ? >> >> > I have one more question about when_any. What would be the expected=20 > behavior when when_any has parameters that shared the same shared=20 > state, as in > > std::shared_future fi1 =3D=20 > std::async(calculate_the_answer_to_life_the_universe_and_everything).shar= e(); > std::shared_future fi2 =3D fi1; > std::when_any(fi1, fi2).wait(); > Or even this radical one std::future fi1 =3D=20 std::async(calculate_the_answer_to_life_the_universe_and_everything).share(= ); std::when_any(fi1, fi1).wait(); Best, Vicente --=20 ---=20 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 e= mail 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-proposa= ls/?hl=3Den. --------------070705060804030208090906 Content-Type: text/html; charset=ISO-8859-1
Le 25/05/13 15:08, Vicente J. Botet Escriba a écrit :
Le 24/05/13 19:07, Vicente J. Botet Escriba a écrit :
Hi,

What is the rationale for when_all to return future<vector<future<R>>> instead of  future<vector<R>>?
What is the rationale for when_any to return future<vector<future<R>>> instead of future<pair<size_t, R>> ?


I have one more question about when_any. What would be the expected behavior when when_any has parameters that shared the same shared state, as in

   std::shared_future<int> fi1 = std::async(calculate_the_answer_to_life_the_universe_and_everything).share();
   std::shared_future<int> fi2 = fi1;
   std::when_any(fi1, fi2).wait();

Or even this radical one

   std::future<int> fi1 = std::async(calculate_the_answer_to_life_the_universe_and_everything).share();
   std::when_any(fi1, fi1).wait();

Best,
Vicente

--
 
---
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.
 
 
--------------070705060804030208090906-- .