From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu Newsgroups: gmane.emacs.devel Subject: Re: MPS prstack Date: Mon, 27 May 2024 22:43:34 +0800 Message-ID: References: <87o790qsgm.fsf@gmail.com> <874jap95hi.fsf@gmail.com> <874janpa4m.fsf@gmail.com> <87le3vogt8.fsf@gmail.com> <87a5kbobt4.fsf@gmail.com> <86sey3v5p8.fsf@gnu.org> <87ed9nmnsm.fsf@gmail.com> <86ed9nv1nw.fsf@gnu.org> <87zfsbl4s9.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="11846"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Eli Zaretskii , gerd.moellmann@gmail.com, emacs-devel@gnu.org To: Helmut Eller Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon May 27 16:44:32 2024 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 1sBbaR-0002vq-Rf for ged-emacs-devel@m.gmane-mx.org; Mon, 27 May 2024 16:44:31 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBbZh-0007a2-2r; Mon, 27 May 2024 10:43:45 -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 1sBbZe-0007Z5-Cf for emacs-devel@gnu.org; Mon, 27 May 2024 10:43:43 -0400 Original-Received: from sonic317-32.consmr.mail.ne1.yahoo.com ([66.163.184.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBbZc-0002qV-Nx for emacs-devel@gnu.org; Mon, 27 May 2024 10:43:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1716821017; bh=gdQy+DhJU1t2eybZapi9t1VaxdV/HarucLaz+APs+Qc=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From:Subject:Reply-To; b=aoQkjOEOuVeAMJGJoTtE3euNIuxMaHTRyRmB9KSEjC8wGRkmZnvXKi9ng3TxoUp+8wsZpC4n5+BFXTCOigWo2CjLed+iG1uWP/ir+y3R3kQI01IDXc0DqzqhGSJoueiH0fSYQox9Ln4L+ukkyDeIffUsPptQLGmppo3iSuBfuE6ynkHNilAr3lq+jr6guTYGirDS0KP9T9g2uEBFM78C973IaD80yBlfKwaTuTcro2o3yxn9OSyH87CkfrqON9bzdaS/EnOZLx3yO1yeQa96+CPa+sJb8HUifzjgDzklyWFV42lrICGoFNKv9oPPPjkZwNbI/zWwkOFgsCP0lspMbg== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1716821017; bh=d4zA6I7FMcdZz95GCQW9oGrewVZnzhnLWW1Jt77guN2=; h=X-Sonic-MF:From:To:Subject:Date:From:Subject; b=MTUq9JS0rnO9XB7vUtqWZsDMo0HGJdLyBrc3CnWwXFxCGZSawQy+pWdlnEFeqU9mDuvu44xPqfaFUW/xTtSve50jUOYPoARIbtkWlHZg1XAgpFjoZbVHfHuIVpZVMxj9EEZpFMlOMAOFXPwspDGWLJkGlii5LbVtUyZyF0Rr40ZMLa4pc3XRX+DrbH5dp5fGDmSkyzbKyRm30Vp+s0Rhv2MVPNB2T/+jFS4htmrpkAxLAENsHFjhuHpRmwvdj3XI8JGVJVY2IAOtP/NtYbsXjbtMKVzjxvYp1wzbhbMsARVAsaMwNPVRpL6K5EDgxTQJuggJqjy0O6ps2WUZh724WQ== X-YMail-OSG: p.r8ALcVM1kAurzRRmlRc3HnIwgz9e0s6oVNPnrcs7tNJOeSnb.Uu3fTznmftte 67stVmiyKMPzj44UTExqj8E.v_jPeLzqWEGI5nOMWubpvgPJmqcdihsXUPs3jNuerLx6esRGkIXC 8i7pOO5_Yc2p3YioyDhYukQcePfe1uojhu.nt1reMS04HL9diXI7LLSkG83eGV5rKutOV0Ngek5W xY.SWU.67Yv8NZ53ubQNTfZXAH7pxAy5N8_NMRiaxbBdQLwWrgxsE1WJv0nXYxThxTSH8pjrBw7Y rclL1dpUCAWRw02R5Qyl5YZ2gcuBOKZCLzTtkcbKTzYXgh.C_S_8GXsdQ8LNte5VpGYPpwpEVeaQ CbaQuMnNY53ydAiuMh_ffduLi3XVV8rHuGR73Ga.rap.2JMyBvghsECS9Bj.OkjU9Ly3ZBHGbCql vAmmJskZnlp1t..XdvDRAzK0Jfzgby1xJwflmCaOjEX3JiuygFR9rxB6teXk2m3Bv7KcEdwMxzQ8 jSVBHVHWKnTXIVuenhkNUIQUuOrOjiUkwLWzFDa6rg8Xz8kB8kHLVSYquLfySzvLJpYK3fveW8Hf FiFEcuMpSxd4BJcpqSIDTcileL8w52C0gMnHb8lYow8I_Q25AMW5RPhzaaesoIcvZCdYOAFWZDwE mA7gIVDKONQzQ_NWFYvvziU2i.yYX8KHAGQyS_Gxz01E.bPkj4YY.mQSX4opiSlj2c9VvWraE8rX LqGLQ75DY2kntiNOBbcZ3lxDoLv6LRWFzxkbfb5xjL_.H8mKFfyLthgTDHOw0XxietyyI.wCgLvh IFqxGtZmS7hQ.WSWolJdnNs.cF6z0TbxR.rjBXxRdq X-Sonic-MF: X-Sonic-ID: 6f745e14-44ad-470d-8b2d-982b07b34822 Original-Received: from sonic.gate.mail.ne1.yahoo.com by sonic317.consmr.mail.ne1.yahoo.com with HTTP; Mon, 27 May 2024 14:43:37 +0000 Original-Received: by hermes--production-sg3-6f9f87bd85-85gcf (Yahoo Inc. Hermes SMTP Server) with ESMTPA ID 962d789ef40ed3528285f10fc50b9840; Mon, 27 May 2024 14:43:34 +0000 (UTC) In-Reply-To: <87zfsbl4s9.fsf@gmail.com> (Helmut Eller's message of "Mon, 27 May 2024 16:15:34 +0200") X-Mailer: WebService/1.1.22356 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Received-SPF: pass client-ip=66.163.184.43; envelope-from=luangruo@yahoo.com; helo=sonic317-32.consmr.mail.ne1.yahoo.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-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:319612 Archived-At: Helmut Eller writes: > Yes. I think > > prstack.stack[prstack.sp] = e; > __atomic_store_n (&prstack.sp, prstack.sp + 1, __ATOMIC_SEQ_CST); > > is quite sufficient. How so? This doesn't guarantee that MPS cannot pause the thread after E is saved into prstack but before prstack.sp is incremented, or that E will remain on the control stack or in the register file until it is.