From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#36649: 27.0.50; pure space and pdumper Date: Sat, 02 Jul 2022 18:28:40 +0800 Message-ID: <877d4vdd0n.fsf@yahoo.com> References: <834k00es7e.fsf@gnu.org> <83zghsd7n6.fsf@gnu.org> <83a69rdgt9.fsf@gnu.org> <87a69r50yy.fsf@gnus.org> Reply-To: Po Lu Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="30527"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux) Cc: 36649@debbugs.gnu.org, Eli Zaretskii , monnier@iro.umontreal.ca, Pip Cet To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Jul 02 12:29:10 2022 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1o7aNC-0007lw-R4 for geb-bug-gnu-emacs@m.gmane-mx.org; 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Hermes SMTP Server) with ESMTPA ID 9ebf9315638933c3263f2297fe6f0daa; Sat, 02 Jul 2022 10:28:45 +0000 (UTC) In-Reply-To: <87a69r50yy.fsf@gnus.org> (Lars Ingebrigtsen's message of "Sat, 02 Jul 2022 11:16:05 +0200") X-Mailer: WebService/1.1.20381 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:235871 Archived-At: Lars Ingebrigtsen writes: > If I understand correctly, dropping pure space would make Po's work on > improving the garbage collector easier -- and improving gc is important, > so it seems to make sense to get rid of pure space just for that reason. > > But I'm not against dropping unexec now, too -- we can drop both unexec > and pure space now. FWIW none of the dumping mechanisms work with the new garbage collector, but it will be optional, since I don't see how to make it work on MS-DOS (which AFAIU has no equivalent of `mprotect'). The current implementation also assumes 4K pages. So in my work, pure space and incremental GC are both conditional, under #ifdef HAVE_MPROTECT.