From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Maxim Cournoyer Newsgroups: gmane.lisp.guile.bugs Subject: bug#59021: Unbounded heap growth when combining dynamic states & delimited continuation Date: Mon, 07 Nov 2022 11:03:26 -0500 Message-ID: <87leomzr8x.fsf@gmail.com> References: <87h6zelgr1.fsf@inria.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="18624"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) Cc: 59021@debbugs.gnu.org To: Ludovic =?UTF-8?Q?Court=C3=A8s?= Original-X-From: bug-guile-bounces+guile-bugs=m.gmane-mx.org@gnu.org Mon Nov 07 17:05:02 2022 Return-path: Envelope-to: guile-bugs@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 1os4cP-0004XP-SP for guile-bugs@m.gmane-mx.org; Mon, 07 Nov 2022 17:05:01 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1os4bh-0002SH-4i; Mon, 07 Nov 2022 11:04:17 -0500 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 1os4bS-0002PK-QO for bug-guile@gnu.org; Mon, 07 Nov 2022 11:04:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1os4bS-0004Fg-DV for bug-guile@gnu.org; Mon, 07 Nov 2022 11:04:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1os4bS-0006VY-9N for bug-guile@gnu.org; Mon, 07 Nov 2022 11:04:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Maxim Cournoyer Original-Sender: "Debbugs-submit" Resent-CC: bug-guile@gnu.org Resent-Date: Mon, 07 Nov 2022 16:04:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 59021 X-GNU-PR-Package: guile Original-Received: via spool by 59021-submit@debbugs.gnu.org id=B59021.166783701524978 (code B ref 59021); Mon, 07 Nov 2022 16:04:02 +0000 Original-Received: (at 59021) by debbugs.gnu.org; 7 Nov 2022 16:03:35 +0000 Original-Received: from localhost ([127.0.0.1]:35166 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1os4b1-0006Uo-2F for submit@debbugs.gnu.org; Mon, 07 Nov 2022 11:03:35 -0500 Original-Received: from mail-qk1-f182.google.com ([209.85.222.182]:46699) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1os4b0-0006Uc-3C for 59021@debbugs.gnu.org; Mon, 07 Nov 2022 11:03:34 -0500 Original-Received: by mail-qk1-f182.google.com with SMTP id z30so7381783qkz.13 for <59021@debbugs.gnu.org>; Mon, 07 Nov 2022 08:03:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:user-agent:message-id :in-reply-to:date:references:subject:cc:to:from:from:to:cc:subject :date:message-id:reply-to; bh=MU7i/AFsw3rKHMeksTF3hxEgqRHwS0KWxytIctfrAfU=; b=OBQku8FbDdyNxfHgKjSHJZvZJvUqOeacngRzjpIiO12a5YQKL9fMS5nDqMTeOxHhI0 HWkjCG77RJaSzYmcvaBaXpH7+M2jqOLAz9oEFSjnb3RFhFKM3VF+ZWkMkDlK8trp56pn cyvW5hNlSFM7u4OQO1fuWKhTH70tbfXJgfQHjbq4Fc/2YE/V/nJP1PlqD+Ktiz2AH1mY 47jjUXlVBuwr+OxzPhbCZohDrDXZ3bXmWcfiADbuLwKwXqIg6Jg3C0U7nPTfm8x496v7 BEnLPY6YTe2yKwHNhTTjFYCHeP6N8a5zRK/BgJmPWv52x6FdXYvIGkFGXW1VfD1+WFO9 NWlA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:user-agent:message-id :in-reply-to:date:references:subject:cc:to:from:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=MU7i/AFsw3rKHMeksTF3hxEgqRHwS0KWxytIctfrAfU=; b=2r+pUj+CARGE+qqKGOopuTNG27+XIxvPVE/R403RD5leol5Ll4mZLSxC/eyVXQMNhD D8X3YH5/GB5UGYgKBO8D+wPdKISNsyl+sBsMmFed///0IZ5PTHlAplX5HEJRzXOXlPUX uMyohvOy5EboCGlDAn4uQyz80Q/isZu25QqJU3QV1yxmuOYLy8TBv3fi71YaAAcFamBK ewUrYbqLLYzw+tU4lyht/axa9ib6NnCjK0DDivnGAzHo0zQ3c3sars34lKUAe/hNTli0 3WlIG5eeCS91hibZ5zbeljOxUS1E1uy6tuxBPK0rxSaXpLFSBhM+SjJwgFl1n3gBsJtN L4mA== X-Gm-Message-State: ACrzQf19iP4zdgdnaFHgaHyc+NjLDGvNqMFa8G82UYemtuWJIjMpzEu9 /ecGlJJAygLCzwgkes8zg4+Tt2Fmdiw= X-Google-Smtp-Source: AMsMyM6lf7QScrUX8CXMUKbPImWh11CLqsObH1Icr0Ch6NVMtE5nTYjbFg+RG4ZbeiPa+rO2KP7DnQ== X-Received: by 2002:a05:620a:100a:b0:6fa:1ef8:49dc with SMTP id z10-20020a05620a100a00b006fa1ef849dcmr728455qkj.314.1667837008069; Mon, 07 Nov 2022 08:03:28 -0800 (PST) Original-Received: from hurd (dsl-10-129-148.b2b2c.ca. [72.10.129.148]) by smtp.gmail.com with ESMTPSA id j11-20020a05620a410b00b006fa2cc1b0fbsm7345841qko.11.2022.11.07.08.03.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Nov 2022 08:03:27 -0800 (PST) In-Reply-To: <87h6zelgr1.fsf@inria.fr> ("Ludovic =?UTF-8?Q?Court=C3=A8s?="'s message of "Fri, 04 Nov 2022 19:24:50 +0100") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guile@gnu.org List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guile-bounces+guile-bugs=m.gmane-mx.org@gnu.org Original-Sender: bug-guile-bounces+guile-bugs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.lisp.guile.bugs:10419 Archived-At: Hi Ludovic, Ludovic Court=C3=A8s writes: > (This is a followup to , > itself a followup to .) > > Consider this code: > > ;; https://issues.guix.gnu.org/58631 > ;; https://github.com/wingo/fibers/issues/65 > > (define loss > (make-vector 1000000)) > > (let ((tag (make-prompt-tag "my prompt"))) > (define handler > (lambda (k i) > (when (zero? (modulo i 2000000)) > (pk 'heap-size (assoc-ref (gc-stats) 'heap-size))) > > (call-with-prompt tag > (lambda () > (k (modulo (+ 1 i) 10000000))) > handler))) > > (call-with-prompt tag > (let ((state (current-dynamic-state))) > (lambda () > ;; (define (with-dynamic-state state thunk) > ;; (let ((previous #f)) > ;; (dynamic-wind > ;; (lambda () (set! previous (set-current-dynamic-state sta= te))) > ;; thunk > ;; (lambda () (set-current-dynamic-state previous))))) > (with-dynamic-state state > (lambda () > (let loop ((i 0)) > (loop (abort-to-prompt tag i))))))) > handler)) > > On Guile 3.0.8, this program exhibits seemingly unbounded heap growth. > Uncommenting the local =E2=80=98with-dynamic-state=E2=80=99 definition fi= xes the > problem. I've tested both 3.0.8 from Guix on multiple machines (including Berlin) and 2.2 from Debian 10, and ran the above snippet; it grows initially but stabilize quickly and then doesn't budge. I've let it run for more than an hour. So there's a problem there (?), but it doesn't seem like an unbound leak from my experiments. Perhaps the reproducer needs to be tweaked to mimic better what is happening in Shepherd? --=20 Thanks, Maxim