From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Ihor Radchenko Newsgroups: gmane.emacs.devel Subject: Re: Concurrency via isolated process/thread Date: Fri, 07 Jul 2023 18:24:04 +0000 Message-ID: <878rbrbmwr.fsf@localhost> References: <871qhnr4ty.fsf@localhost> <875y6y8nlr.fsf@localhost> <87h6qhnalc.fsf@yahoo.com> <87ilax71wo.fsf@localhost> <878rbtkz2c.fsf@yahoo.com> <87a5w96x2o.fsf@localhost> <87jzvdjjp4.fsf@yahoo.com> <877crd6w53.fsf@localhost> <877crdjiwn.fsf@yahoo.com> <874jmh6v4s.fsf@localhost> <83y1jtgmbw.fsf@gnu.org> <87zg49xfke.fsf@localhost> <83sfa1gjns.fsf@gnu.org> <87r0plxbep.fsf@localhost> <83ilawhpi6.fsf@gnu.org> <87zg48apwr.fsf@localhost> <83edljg8ub.fsf@gnu.org> <87o7knbxr7.fsf@localhost> <838rbrg4mg.fsf@gnu.org> <87ilavbvdr.fsf@localhost> <834jmffvhy.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="26410"; mail-complaints-to="usenet@ciao.gmane.io" Cc: luangruo@yahoo.com, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Jul 07 20:25:13 2023 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qHq8m-0006fk-Qm for ged-emacs-devel@m.gmane-mx.org; Fri, 07 Jul 2023 20:25:12 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qHq7q-0000Yk-A1; Fri, 07 Jul 2023 14:24:14 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qHq7o-0000XX-KN for emacs-devel@gnu.org; Fri, 07 Jul 2023 14:24:12 -0400 Original-Received: from mout01.posteo.de ([185.67.36.65]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qHq7m-0001gI-4W for emacs-devel@gnu.org; Fri, 07 Jul 2023 14:24:12 -0400 Original-Received: from submission (posteo.de [185.67.36.169]) by mout01.posteo.de (Postfix) with ESMTPS id 187A5240028 for ; Fri, 7 Jul 2023 20:24:07 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1688754248; bh=dWixnFtvk+Ll1kNYVMFWOlaZuLghfA7Wf5Tct32hxAo=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:From; b=qNkbEde/exDYFVscWw0Mp+/7qz80ZSl5/hWWJEmnPVhmquPvyRGeNuv+wFXlLYKvh H68547vkcf1XGfRokBU7y8CLkt+Rxk/HcJ5Ury7mwZ2gf1fMQ1X+5zV1c/CQS8idr8 b2VWo/FjpSo+5G3qiRt0bg2w/ZytTHuG7ma3xxFi5Owq4JoutMeBBMcLSyP6yqKj+o LxYG2E8HMAU5bnwzAzrcJ2AOFSRDiluMdr+a+fLJlSGMNK88gV8ZOUmY2U4Pr7wDpK +SvxAxwSI3BtAyRIo5WBMsIGSgocqC/5UYn3jlgY3nVnkgs9RhTSDhkJGfu3QP+BHV jW7d4N15wKxNA== Original-Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4QyMHC3qPRz9rxB; Fri, 7 Jul 2023 20:24:07 +0200 (CEST) In-Reply-To: <834jmffvhy.fsf@gnu.org> Received-SPF: pass client-ip=185.67.36.65; envelope-from=yantar92@posteo.net; helo=mout01.posteo.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:307584 Archived-At: Eli Zaretskii writes: >> May you please provide a concrete example how running GC breaks things? > > I already did: see my description of compacting strings, relocating > buffer text, and other stuff GC does. But how exactly does, say, relocating buffer text can break things? May you provide a pseudo-code example? >> I am interested in specific details. The way you say it now is general >> and sounds like "it is impossible and there is no point trying to do >> anything". > > That's indeed what I want to say. You cannot have true concurrency as > long as Emacs Lisp programs use this huge global state. Then the question is: can the global state be reduced? May it be acceptable to have a limited concurrency where async threads are only allowed to modify a portion of the global state? -- Ihor Radchenko // yantar92, Org mode contributor, Learn more about Org mode at . Support Org development at , or support my work at