220 4576 <51A0B7C3.40109@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: Sat, 25 May 2013 15:08:19 +0200 Lines: 93 Approved: news@gmane.org Message-ID: <51A0B7C3.40109@wanadoo.fr> References: <519F9E48.7050700@wanadoo.fr> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="------------020701010008060109080707" X-Trace: ger.gmane.org 1369487303 27053 80.91.229.3 (25 May 2013 13:08:23 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 25 May 2013 13:08:23 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDH67CONY4PBBRHPQKGQKGQEJPHJ6VI@isocpp.org Sat May 25 15:08:22 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-bk0-f69.google.com ([209.85.214.69]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1UgECr-0006cy-EY for gclcip-std-proposals@m.gmane.org; Sat, 25 May 2013 15:08:21 +0200 Original-Received: by mail-bk0-f69.google.com with SMTP id jc10sf1735716bkc.4 for ; Sat, 25 May 2013 06:08:21 -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=pQ0ShDJY8av4hLOoAjYGLLgXZQWGgOzDNNJoUi70JDI=; b=WtFjfL78BNmRTsSUiow+AtcFl6BfVI3dp+X58SO3ol2iS7CPeNxoaT59qs5Kb7pT0A CfTpCjVbtz1vXLsGIlbKryN01TFfDO0K6Hk73L3fRDVQ0+p6i3P+oyU0+8TjCJ/htcg+ nyuDkbQqRmcYOio0qv4hGYZuvE1tXLiW353T0aDw2E8r70xk3d1pn6VtOSFn3r2lvZ6w yjfHXD8sv3W5JilnNrzYeIPexWWgX6tGWH63iIw4MPZhY4JTDZBjBYBx2teBfo5NbQYp Fn2oC6G1T5iOGejDOcrSBX0PT7Oq4MHSydSxMzFFLon56zxtCNpgUg43GrGmjxg82Bwn 4Cdg== X-Received: by 10.180.160.212 with SMTP id xm20mr1174216wib.0.1369487300863; Sat, 25 May 2013 06:08:20 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.87.42 with SMTP id u10ls474734wiz.33.canary; Sat, 25 May 2013 06:08:20 -0700 (PDT) X-Received: by 10.14.174.132 with SMTP id x4mr3583346eel.88.1369487300052; Sat, 25 May 2013 06:08:20 -0700 (PDT) Original-Received: from smtp.smtpout.orange.fr (smtp06.smtpout.orange.fr. [80.12.242.128]) by mx.google.com with ESMTP id g8si3927191eep.340.2013.05.25.06.08.19 for ; Sat, 25 May 2013 06:08:20 -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 iMac-de-Vicente-Botet-Escriba.local ([2.13.6.91]) by mwinf5d41 with ME id gD8K1l0071xq0tN03D8K0Y; Sat, 25 May 2013 15:08:19 +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: <519F9E48.7050700@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:4576 Archived-At: This is a multi-part message in MIME format. --------------020701010008060109080707 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Le 24/05/13 19:07, Vicente J. Botet Escriba a =E9crit : > Hi, > > What is the rationale for when_all to return future>>=20 > instead of future>? > What is the rationale for when_any to return future>>=20 > 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 state,=20 as in std::shared_future fi1 =3D=20 std::async(calculate_the_answer_to_life_the_universe_and_everything).share(= ); std::shared_future fi2 =3D fi1; std::when_any(fi1, fi2).wait(); 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. --------------020701010008060109080707 Content-Type: text/html; charset=ISO-8859-1
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();

Vicente

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