From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTP id CA1833853828 for ; Tue, 8 Jun 2021 17:20:51 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org CA1833853828 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-588-um-zB1bYNrSilWft8Qlb_Q-1; Tue, 08 Jun 2021 13:20:50 -0400 X-MC-Unique: um-zB1bYNrSilWft8Qlb_Q-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9480C107ACC7; Tue, 8 Jun 2021 17:20:49 +0000 (UTC) Received: from oldenburg.str.redhat.com (ovpn-115-60.ams2.redhat.com [10.36.115.60]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BC18E5C1C2; Tue, 8 Jun 2021 17:20:48 +0000 (UTC) From: Florian Weimer To: Adhemerval Zanella Cc: Libc-help Subject: Re: inode-based dlopen caching References: <87zgw09tww.fsf@oldenburg.str.redhat.com> <0242da65-0563-d03d-2ba7-5318c2a6c010@linaro.org> Date: Tue, 08 Jun 2021 19:20:46 +0200 In-Reply-To: <0242da65-0563-d03d-2ba7-5318c2a6c010@linaro.org> (Adhemerval Zanella's message of "Tue, 8 Jun 2021 14:19:28 -0300") Message-ID: <87r1hc9ssx.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-6.6 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-help@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-help mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jun 2021 17:20:53 -0000 * Adhemerval Zanella: > But my main reservation with this is the idea of reload the new module > is, although the symbol resolution is a different namespace, it still > share the same process resources. It would require a lot of careful > code within the library so it can run with multiple instances, we see > the potential issues with our static dlopen support. It would work quite well for a lot of stateless JNI wrappers or Python extensions, though. That alone looks like a relevant use case to me. Thanks, Florian