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=-3.6 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,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 8D62D1F6AC for ; Wed, 4 Jul 2018 16:40:06 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 62382120A61; Thu, 5 Jul 2018 01:40:03 +0900 (JST) Received: from o1678916x28.outbound-mail.sendgrid.net (o1678916x28.outbound-mail.sendgrid.net [167.89.16.28]) by neon.ruby-lang.org (Postfix) with ESMTPS id 6082D120A61 for ; Thu, 5 Jul 2018 01:40:01 +0900 (JST) Received: by filter0051p3las1.sendgrid.net with SMTP id filter0051p3las1-8546-5B3CF85E-1F 2018-07-04 16:39:58.6611761 +0000 UTC Received: from herokuapp.com (ec2-54-167-164-242.compute-1.amazonaws.com [54.167.164.242]) by ismtpd0001p1iad1.sendgrid.net (SG) with ESMTP id 7ZZJzBhbSFqoqIL9-iQJWg Wed, 04 Jul 2018 16:39:58.627 +0000 (UTC) Date: Wed, 04 Jul 2018 16:39:59 +0000 (UTC) From: funny.falcon@gmail.com To: ruby-core@ruby-lang.org Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 63173 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 14736 X-Redmine-Issue-Author: ioquatix X-Redmine-Sender: funny_falcon 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/Ymy4QrNMhiuLXJG8OTL2vJD1yS76X+1jTpZhK+8vvUpccOe7gFzZui4W2ni6T6 +e9hSB/9SLjE9MeW6vTzD3dXumcWJc4AycolHbXagx5ppao6HVqZu7PDaAaeSSPLKLLvoFxRgJtMvE ZudnrAF++5/FP1SyJUNyYVg3uK9ksyN5DpNfRZ/rcmKvZb2H+NDYLrcKzQ== X-ML-Name: ruby-core X-Mail-Count: 87785 Subject: [ruby-core:87785] [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 funny_falcon (Yura Sokolov). Just remark: make test example to use `Fiber.transfer`. If patch will be accepted, example will be copied, and usage of `Fiber.yield` is not composable with Enumerator. ---------------------------------------- Feature #14736: Thread selector for flexible cooperative fiber based concurrency https://bugs.ruby-lang.org/issues/14736#change-72805 * 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/