From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Zhu Zihao Newsgroups: gmane.lisp.guile.devel Subject: Difference between guardian and finalizer Date: Sun, 05 Dec 2021 14:10:47 +0800 Message-ID: <867dcjvas6.fsf@163.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="34844"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: mu4e 1.6.10; emacs 27.2 To: guile-devel@gnu.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane-mx.org@gnu.org Sun Dec 05 16:36:31 2021 Return-path: Envelope-to: guile-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 1mttZ1-0008sY-J1 for guile-devel@m.gmane-mx.org; Sun, 05 Dec 2021 16:36:31 +0100 Original-Received: from localhost ([::1]:54960 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mttZ0-0001MZ-G0 for guile-devel@m.gmane-mx.org; Sun, 05 Dec 2021 10:36:30 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:44254) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mtl1h-0004nB-R7 for guile-devel@gnu.org; Sun, 05 Dec 2021 01:29:33 -0500 Original-Received: from mail-m971.mail.163.com ([123.126.97.1]:34352) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mtl1c-0000Tg-O0 for guile-devel@gnu.org; Sun, 05 Dec 2021 01:29:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-ID:MIME-Version; bh=usLwA F2IGcH+gbFskb31+D6hISTOrB4WYM4i4xzwRwA=; b=fIlsatnXC19oOVV/o1KIn bcN4u3TKA0xUdqHOBOmdC6aaxlhsEueDXjKnayJPLxrj33m5WZunVJi4pm8tZCDj bXs2sIwnjARX2Koo+u8HksQNN0ceeA+U8LiRJXWgf8HFl5tds4isTuSNvZkM/DH9 hAizl4ChML2C0hMF5jbxjk= Original-Received: from asus-laptop (unknown [27.46.80.4]) by smtp1 (Coremail) with SMTP id GdxpCgAXU+WsWKxhd6p0AQ--.8402S2; Sun, 05 Dec 2021 14:14:05 +0800 (CST) X-CM-TRANSID: GdxpCgAXU+WsWKxhd6p0AQ--.8402S2 X-Coremail-Antispam: 1Uf129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7v73 VFW2AGmfu7bjvjm3AaLaJ3UbIYCTnIWIevJa73UjIFyTuYvjxU8q2MDUUUU X-Originating-IP: [27.46.80.4] X-CM-SenderInfo: pdoosuxxwbztlvw6il2tof0z/xtbClhBgr1zmUWqSNwABss Received-SPF: pass client-ip=123.126.97.1; envelope-from=all_but_last@163.com; helo=mail-m971.mail.163.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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Sun, 05 Dec 2021 10:35:40 -0500 X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-devel-bounces+guile-devel=m.gmane-mx.org@gnu.org Original-Sender: "guile-devel" Xref: news.gmane.io gmane.lisp.guile.devel:20991 Archived-At: --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Guile now have both guardian and finalizer. Guardian API can be directly accessed from Scheme, but finalizer API only available in (system foreign-o= bject). I see they're all based on the finalize mechanism of libgc, what's the difference between them? If I want to manage the destruction of a foreign pointer, which one is reco= mmended? =2D-=20 Retrieve my PGP public key: gpg --recv-keys D47A9C8B2AE3905B563D9135BE42B352A9F6821F Zihao --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iIsEARYIADMWIQTUepyLKuOQW1Y9kTW+QrNSqfaCHwUCYaxYqRUcYWxsX2J1dF9s YXN0QDE2My5jb20ACgkQvkKzUqn2gh8laAEAoC9a7WTymFHaPWCGcvQvTTP5553N Ot5lBOLiWpgW2P4BALTOxxbKb1fy7aQU0EAo3ZlX3PmgM63L8TPE4z8RDm4K =GJ84 -----END PGP SIGNATURE----- --=-=-=--