From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on starla X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 Received: from nue.mailmanlists.eu (nue.mailmanlists.eu [IPv6:2a01:4f8:1c0c:6b10::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id E91911F44D for ; Mon, 18 Mar 2024 19:06:36 +0000 (UTC) Authentication-Results: dcvr.yhbt.net; dkim=pass (1024-bit key; secure) header.d=ml.ruby-lang.org header.i=@ml.ruby-lang.org header.a=rsa-sha256 header.s=mail header.b=jp8c41Jg; 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=ApOBUt+A; dkim-atps=neutral Received: from nue.mailmanlists.eu (localhost [127.0.0.1]) by nue.mailmanlists.eu (Postfix) with ESMTP id B8B0683511; Mon, 18 Mar 2024 19:06:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ml.ruby-lang.org; s=mail; t=1710788787; bh=CmN78S1+1LeMKlY3tEb6aV83OjkksAtr1kfJFpLNxME=; h=Date:References:To:Reply-To:Subject:List-Id:List-Archive: List-Help:List-Owner:List-Post:List-Subscribe:List-Unsubscribe: From:Cc:From; b=jp8c41JgkVTUpQs0MeZIFKgJLeRGVf/14IngE5Hvzsy54goCzkf2eaCx1muyOZxzi o2Z+atjV34YBcRUNmLQyrq5p+U7XHmiMPzqvC+/PIZ5CGYR9QuSWz9MYWzkRt+pJmb KWUftS7FyXcdqZ4DmhjRPVB2E1y0yG7Koozi75bY= Received: from s.wrqvwxzv.outbound-mail.sendgrid.net (s.wrqvwxzv.outbound-mail.sendgrid.net [149.72.154.232]) by nue.mailmanlists.eu (Postfix) with ESMTPS id E86E08317A for ; Mon, 18 Mar 2024 19:06:23 +0000 (UTC) Authentication-Results: nue.mailmanlists.eu; dkim=pass (2048-bit key; unprotected) header.d=ruby-lang.org header.i=@ruby-lang.org header.a=rsa-sha256 header.s=s1 header.b=ApOBUt+A; dkim-atps=neutral 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:content-type:from:subject:to; s=s1; bh=nNwjeObLYtmi0d028qkA5Jn+/XXOX0ZgbqxfzYXXvAw=; b=ApOBUt+AP+gjJPee+Z8MY37iyW7tHQzFqQV87QhQldJbDWSh08KoeiMRhBz58K0Px84W N6NZCA6c3YGW8qEQcfVMSKEN6r9cSEFPYRxzA2HNdGfdiPjkv4AWfeanEUz4TpyQbUDwAQ mPdGA5AH7h2UWDqbl/j95+aihjdi3OInPInjdhd/HhyprCioochINPLACXfp52RYD6MIDV HB5ddOAGPDl1X7iuzxtSwjEoIKawIhbSjEh6kT2MH/zvcnN5xDeC6SBv6PDkw6b+araJGi 9qvlVJeCXZ8O6RP19sJlwOATXBxnX0V1yeBuYMcQDfFfIRI507bmbDuvGmlWJfTA== Received: by filterdrecv-58bf8c68ff-4xvzd with SMTP id filterdrecv-58bf8c68ff-4xvzd-1-65F890AD-4B 2024-03-18 19:06:21.978429112 +0000 UTC m=+1195884.242979392 Received: from herokuapp.com (unknown) by geopod-ismtpd-0 (SG) with ESMTP id MRO-IBjjRjiYUFEnaobEFA for ; Mon, 18 Mar 2024 19:06:21.932 +0000 (UTC) Date: Mon, 18 Mar 2024 19:06:22 +0000 (UTC) Message-ID: References: Mime-Version: 1.0 X-Redmine-Project: ruby-master X-Redmine-Issue-Tracker: Bug X-Redmine-Issue-Id: 20346 X-Redmine-Issue-Author: forthoney X-Redmine-Issue-Priority: Normal X-Redmine-Sender: forthoney 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: 93782 X-SG-EID: =?us-ascii?Q?u001=2E+NaqfuCTG8p5y4F1HRfu60YWz7kwGweAN8mZStoLKD2liw3Wwph9OLXyE?= =?us-ascii?Q?SvcyvQmDUO3QnuDtuUSkc1fN3lynJ4+c4WJRKpJ?= =?us-ascii?Q?6qVXwm8OwK8hkvYf76ruNTsgEhAVO2g6qud4+3I?= =?us-ascii?Q?yjWGBoq5I8VvAdyEUv+TwQeqEVzP9=2FIR5WTS7=2Ft?= =?us-ascii?Q?cC6qFryjAz7U7J5PjPTTasK+wlwhlz7kSfzGDnD?= =?us-ascii?Q?zbw7FmxyYbix9nShr9YFccM+hKVCkpsWXLybc6k?= =?us-ascii?Q?eGOewR1svcsO05Zj9nk224z1Xw=3D=3D?= To: ruby-core@ml.ruby-lang.org X-Entity-ID: u001.I8uzylDtAfgbeCOeLBYDww== Message-ID-Hash: MRJ7XFNE27Q53ZWUME7KDG5YRZDC3GTJ X-Message-ID-Hash: MRJ7XFNE27Q53ZWUME7KDG5YRZDC3GTJ 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:117216] [Ruby master Bug#20346] FiberScheduler.unblock not called by Thread#join when Thread body contains Ractor.take List-Id: Ruby developers Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: "forthoney (Seong-Heon Jung) via ruby-core" Cc: "forthoney (Seong-Heon Jung)" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Issue #20346 has been reported by forthoney (Seong-Heon Jung). ---------------------------------------- Bug #20346: FiberScheduler.unblock not called by Thread#join when Thread body contains Ractor.take https://bugs.ruby-lang.org/issues/20346 * Author: forthoney (Seong-Heon Jung) * Status: Open * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- When using a `Ractor.take` inside a different thread, `Thread#join` on the thread running `Ractor.take` fails to call `FiberScheduler.unblock`. The below code can replicate this behavior ```ruby require "async" class RactorWrapper def initialize @ractor = Ractor.new do Ractor.recv # Ractor doesn't start until explicitly told to # Do some calculations fib = ->(x) { x < 2 ? 1 : fib.call(x - 1) + fib.call(x - 2) } fib.call(20) end end def take_async @ractor.send(nil) Thread.new { @ractor.take }.join.value end end Async do |task| 10000.times do |i| task.async do RactorWrapper.new.take_async puts i end end end ``` The above code deadlocks, and when we leave a debugging print statement inside of `Async`'s scheduler's `block` and `unblock` method, we can confirm that we only call `Scheduler.block`, and never `Scheduler.unblock` -- 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/