From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS4713 221.184.0.0/13 X-Spam-Status: No, score=-3.9 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.1 Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by dcvr.yhbt.net (Postfix) with ESMTP id 8F4831F6AC for ; Thu, 5 Jul 2018 04:12:24 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 84D59120BD7; Thu, 5 Jul 2018 13:12:20 +0900 (JST) Received: from o1678948x4.outbound-mail.sendgrid.net (o1678948x4.outbound-mail.sendgrid.net [167.89.48.4]) by neon.ruby-lang.org (Postfix) with ESMTPS id 8F092120BB4 for ; Thu, 5 Jul 2018 13:12:18 +0900 (JST) Received: by filter0054p3mdw1.sendgrid.net with SMTP id filter0054p3mdw1-6889-5B3D9A9F-12 2018-07-05 04:12:15.23642103 +0000 UTC Received: from herokuapp.com (ec2-54-242-189-103.compute-1.amazonaws.com [54.242.189.103]) by ismtpd0004p1iad1.sendgrid.net (SG) with ESMTP id FOyQQ2cDSd2WoRNrUKGn3Q Thu, 05 Jul 2018 04:12:15.204 +0000 (UTC) Date: Thu, 05 Jul 2018 04:12:15 +0000 (UTC) From: samuel@oriontransfer.net To: ruby-core@ruby-lang.org Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 63185 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 14736 X-Redmine-Issue-Author: ioquatix X-Redmine-Sender: ioquatix X-Mailer: Redmine X-Redmine-Host: bugs.ruby-lang.org X-Redmine-Site: Ruby Issue Tracking System X-Auto-Response-Suppress: All Auto-Submitted: auto-generated X-SG-EID: ync6xU2WACa70kv/Ymy4QrNMhiuLXJG8OTL2vJD1yS6H0Fbu4DWBNeRo06MigVCFgKx40qnPbV1FCE iBM0llJzTyYoC3EM2Yqec0YALT+j7kZe8PtgwZKBzZL3yrErBozYSGFwp1VUNDnzeAezWbeRrSWbnF KG77Aarh8/AZqUuIncNyW31dtjESVTlzroDVoM+gyP3oVkhFwjce8f3GiQ== X-ML-Name: ruby-core X-Mail-Count: 87798 Subject: [ruby-core:87798] [Ruby trunk Feature#14736] Thread selector for flexible cooperative fiber based concurrency X-BeenThere: ruby-core@ruby-lang.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: Ruby developers List-Id: Ruby developers List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #14736 has been updated by ioquatix (Samuel Williams). Are you saying that calling Fiber.yield is not valid within an enumerator? ---------------------------------------- Feature #14736: Thread selector for flexible cooperative fiber based concurrency https://bugs.ruby-lang.org/issues/14736#change-72815 * Author: ioquatix (Samuel Williams) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- Ruby concurrency can be greatly enhanced by concurrent, deterministic IO. Fibers have been shown many times to be a great abstraction for this purpose. The retain normal code flow and don't require any kind of Thread synchronisation. They are enjoyable to write code with because you don't have to concern yourself with thread synchronisation or other complicated issues. The basic idea is that if some operation would block, it yields the Fiber, and other Fibers within the thread can continue to execute. There are a number of ways to implement this. Here is a proof of concept to amend the existing `rb_io_wait_readable`/`rb_io_wait_writable`. https://github.com/ruby/ruby/pull/1870 This design minimally affects the Ruby implementation and allows flexibility for selector implementation. With a small amount of work, we can support EventMachine (65 million downloads), NIO4r (21 million downloads). It would be trivial to back port. This PR isn't complete but I am seeking feedback. If it's a good idea, I will do my best to see it through to completion, including support for EventMachine and NIO4r. ---Files-------------------------------- port_scanner_threadlet.rb (925 Bytes) -- https://bugs.ruby-lang.org/