From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS24940 94.130.0.0/16 X-Spam-Status: No, score=-2.9 required=3.0 tests=AWL,BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_BL_SPAMCOP_NET,SPF_HELO_PASS, SPF_PASS,UNPARSEABLE_RELAY shortcircuit=no autolearn=no autolearn_force=no version=3.4.2 Received: from nue.mailmanlists.eu (nue.mailmanlists.eu [94.130.110.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id 9EE8D1F4C1 for ; Thu, 1 Dec 2022 08:44:19 +0000 (UTC) Authentication-Results: dcvr.yhbt.net; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=ruby-lang.org header.i=@ruby-lang.org header.b="qS3WrFpM"; dkim-atps=neutral Received: from nue.mailmanlists.eu (localhost [127.0.0.1]) by nue.mailmanlists.eu (Postfix) with ESMTP id A1D427E607; Thu, 1 Dec 2022 08:44:12 +0000 (UTC) Authentication-Results: nue.mailmanlists.eu; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=ruby-lang.org header.i=@ruby-lang.org header.a=rsa-sha256 header.s=s1 header.b=qS3WrFpM; dkim-atps=neutral Received: from o1678948x4.outbound-mail.sendgrid.net (o1678948x4.outbound-mail.sendgrid.net [167.89.48.4]) by nue.mailmanlists.eu (Postfix) with ESMTPS id 0A53D7E601 for ; Thu, 1 Dec 2022 08:44:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ruby-lang.org; h=from:references:subject:mime-version:content-type: content-transfer-encoding:list-id:to:cc; s=s1; bh=LlHyI+m8iKYqI1A+7On7HQGEbcDPXr7czTcoITREXL0=; b=qS3WrFpMX/5q8rQmg2WryyPBUfCcMopm8DglsBp0t+kvuQWrVlxXHIes8Q7jE+gOwONT L4mHh7I3i7JHVYCvd7EMFisvKnJo+OKRlo7WIo9SYR2OS/dCdReNV1TXQD+XzafBmA30Ch 3ImM8VZRLUhvdCpJ6V4cJTbNu0/qLlyglLhjJAEcAAnxJ9JAzrHpLLNP7Zh9Z3CaHkF3Bx C7dGvlFd0EyevvRrw0fBC19kqmRmVEbxcRcZ+By462uCwJgCB9xkOexYR8HKYI11JulKfZ rDk0PnO0FCU+mCXiWslyFjq0yxHdyvcsZzV23bLHR6aQTFY2iPcpdQ7kRJ8zSfEA== Received: by filterdrecv-557d69979-ffbkq with SMTP id filterdrecv-557d69979-ffbkq-1-63886956-34 2022-12-01 08:44:07.053256505 +0000 UTC m=+1157898.851973656 Received: from herokuapp.com (unknown) by geopod-ismtpd-4-1 (SG) with ESMTP id mqFEJUoGRx-q0g1-WtGRLA for ; Thu, 01 Dec 2022 08:44:06.914 +0000 (UTC) Date: Thu, 01 Dec 2022 08:44:07 +0000 (UTC) From: "ioquatix (Samuel Williams)" Message-ID: References: Mime-Version: 1.0 X-Redmine-Project: ruby-master X-Redmine-Issue-Tracker: Feature X-Redmine-Issue-Id: 19078 X-Redmine-Issue-Author: ioquatix X-Redmine-Issue-Assignee: 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-Redmine-MailingListIntegration-Message-Ids: 87471 X-SG-EID: =?us-ascii?Q?RXGrw3WrKfUduNFRrzMMcXYHKEABJI9T84jNjq2g6rBTg=2FXhHIicnPoJUXLutJ?= =?us-ascii?Q?tdNFg7BiEDMUtMCwjaLtb0ItKeRyv3NlZm6AYiJ?= =?us-ascii?Q?s0JX4ObTk9ku3izQJQ8yEy1SY56goHsPLIJ7PEF?= =?us-ascii?Q?kOqp8ule6wWnVLJq68sMOn0H5oDiSoGjIj70FMX?= =?us-ascii?Q?gvzYoTa5=2FD7RqXgiGmBIvmw22R3PVYSpAOd0UAP?= =?us-ascii?Q?U3ys5sNHKR5vO2aE8z1xSErhZn4lYrMvQ=2FNU313?= =?us-ascii?Q?iSZrhsko2wW5nN1DiGPvA=3D=3D?= To: ruby-core@ml.ruby-lang.org X-Entity-ID: b/2+PoftWZ6GuOu3b0IycA== Message-ID-Hash: 4YW6XBCOU6XCZWPKUJAIIBUHWPKJKSS2 X-Message-ID-Hash: 4YW6XBCOU6XCZWPKUJAIIBUHWPKJKSS2 X-MailFrom: bounces+313651-b711-ruby-core=ml.ruby-lang.org@em5188.ruby-lang.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.3 Precedence: list Reply-To: Ruby developers Subject: [ruby-core:111120] [Ruby master Feature#19078] Introduce `Fiber#storage` for inheritable fiber-scoped variables. List-Id: Ruby developers Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Issue #19078 has been updated by ioquatix (Samuel Williams). Thanks so much for your time and discussion @matz et al. ---------------------------------------- Feature #19078: Introduce `Fiber#storage` for inheritable fiber-scoped variables. https://bugs.ruby-lang.org/issues/19078#change-100395 * Author: ioquatix (Samuel Williams) * Status: Open * Priority: Normal * Assignee: ioquatix (Samuel Williams) ---------------------------------------- Pull Request: https://github.com/ruby/ruby/pull/6612 This is an evolution of the previous ideas: - https://bugs.ruby-lang.org/issues/19058 - https://bugs.ruby-lang.org/issues/19062 This PR introduces fiber scoped variables, and is a solution for problems like . The main interface is: ```ruby Fiber[key] = value Fiber[key] # => value ``` The variables are scoped (local to) a fiber and inherited into child fibers and threads. ```ruby Fiber[:request_id] = SecureRandom.hex(16) Fiber.new do p Fiber[:request_id] # prints the above request id end ``` The fiber scoped variables are stored and can be accessed: ```ruby Fiber.current.storage # => returns a Hash (copy) of the internal storage. Fiber.current.storage= # => assigns a Hash (copy) to the internal storage. ``` Fiber itself has one new keyword argument: ``` Fiber.new(..., storage: hash, false, undef, nil) ``` This can control how the fiber variables are setup in a child context. To minimise the performance overhead of some of the implementation choices, we are also simultaneously implementing . ## Examples ### Request loop ```ruby Thread.new do while request = queue.pop Fiber.new(storage: {id: SecureRandom.hex(16)}) do handle_request.call(request) end end end ``` OR ```ruby Thread.new do while request = queue.pop Fiber.current.storage = {id: SecureRandom.hex(16)} handle_request.call(request) end end ``` -- https://bugs.ruby-lang.org/ ______________________________________________ ruby-core mailing list -- ruby-core@ml.ruby-lang.org To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org ruby-core info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-core.ml.ruby-lang.org/