From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andy Wingo Newsgroups: gmane.lisp.guile.bugs Subject: bug#17049: [PATCH] Make reverse! forego the cost of SCM_VALIDATE_LIST Date: Thu, 20 Mar 2014 21:50:11 +0100 Message-ID: <87bnx0y4qk.fsf@pobox.com> References: <1395314582-22733-1-git-send-email-dak@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1395348666 997 80.91.229.3 (20 Mar 2014 20:51:06 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 20 Mar 2014 20:51:06 +0000 (UTC) Cc: 17049@debbugs.gnu.org To: David Kastrup Original-X-From: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Thu Mar 20 21:51:16 2014 Return-path: Envelope-to: guile-bugs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WQjvn-0006BI-Up for guile-bugs@m.gmane.org; Thu, 20 Mar 2014 21:51:16 +0100 Original-Received: from localhost ([::1]:49270 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WQjvn-0001VQ-Jo for guile-bugs@m.gmane.org; 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c=nofws; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; q=dns; s=sasl; b=p/VtWkUMtQE4+0vtlXlzFWli61yoYCxm NHhAc2W7zYhu/r/AxW3AORpaSAaZJB4tOyfvmgNj/z8kegMtFefmL2ZGMiUgpgLd 1zL0aIjz35oz31B49sRrmIqkgiT5TxQ4V/k/JLIY9rPNI/QEVNFkyso4asDezGhP WzAy2x7X9w4= Original-Received: from a-pb-sasl-quonix.pobox.com (unknown [127.0.0.1]) by a-pb-sasl-quonix.pobox.com (Postfix) with ESMTP id 870C1F721; Thu, 20 Mar 2014 16:50:14 -0400 (EDT) Original-Received: from badger (unknown [88.160.190.192]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by a-pb-sasl-quonix.pobox.com (Postfix) with ESMTPSA id C5582F720; Thu, 20 Mar 2014 16:50:13 -0400 (EDT) In-Reply-To: <1395314582-22733-1-git-send-email-dak@gnu.org> (David Kastrup's message of "Thu, 20 Mar 2014 12:23:02 +0100") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) X-Pobox-Relay-ID: 3C381C18-B071-11E3-A8D3-873F0E5B5709-02397024!a-pb-sasl-quonix.pobox.com X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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.org@gnu.org Original-Sender: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.bugs:7417 Archived-At: Hi, Thanks for the patch. What is its performance impact for your use case? On Thu 20 Mar 2014 12:23, David Kastrup writes: > + /* We did not start with a proper list. Undo the reversal. */ I'm hesitant. This is visible to other threads. (Granted there has to be significant wrongness if we get here...) Andy -- http://wingolog.org/