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GET /api/patches/807526/?format=api
{ "id": 807526, "url": "http://patchwork.ozlabs.org/api/patches/807526/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/1504081950-2528-29-git-send-email-peterx@redhat.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1504081950-2528-29-git-send-email-peterx@redhat.com>", "list_archive_url": null, "date": "2017-08-30T08:32:25", "name": "[RFC,v2,28/33] migration: return incoming task tag for sockets", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "3a1f561f76192369db2d63084610a74b4f8e113e", "submitter": { "id": 67717, "url": "http://patchwork.ozlabs.org/api/people/67717/?format=api", "name": "Peter Xu", "email": "peterx@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/1504081950-2528-29-git-send-email-peterx@redhat.com/mbox/", "series": [ { "id": 552, "url": "http://patchwork.ozlabs.org/api/series/552/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=552", "date": "2017-08-30T08:31:59", "name": "Migration: postcopy failure recovery", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/552/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/807526/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/807526/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=<UNKNOWN>)", "ext-mx05.extmail.prod.ext.phx2.redhat.com;\n\tdmarc=none (p=none dis=none) header.from=redhat.com", "ext-mx05.extmail.prod.ext.phx2.redhat.com;\n\tspf=fail smtp.mailfrom=peterx@redhat.com" ], "Received": [ "from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xj01C4nFCz9t2Q\n\tfor <incoming@patchwork.ozlabs.org>;\n\tWed, 30 Aug 2017 19:03:59 +1000 (AEST)", "from localhost ([::1]:49194 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1dmyuj-0000mo-I2\n\tfor incoming@patchwork.ozlabs.org; Wed, 30 Aug 2017 05:03:57 -0400", "from eggs.gnu.org ([2001:4830:134:3::10]:35349)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <peterx@redhat.com>) id 1dmyTB-0000ow-R3\n\tfor qemu-devel@nongnu.org; Wed, 30 Aug 2017 04:35:34 -0400", "from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from <peterx@redhat.com>) id 1dmyT7-0004Kv-4m\n\tfor qemu-devel@nongnu.org; Wed, 30 Aug 2017 04:35:29 -0400", "from mx1.redhat.com ([209.132.183.28]:52862)\n\tby eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)\n\t(Exim 4.71) (envelope-from <peterx@redhat.com>) id 1dmyT6-0004Kj-S3\n\tfor qemu-devel@nongnu.org; Wed, 30 Aug 2017 04:35:25 -0400", "from smtp.corp.redhat.com\n\t(int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby mx1.redhat.com (Postfix) with ESMTPS id D37F413AB0;\n\tWed, 30 Aug 2017 08:35:23 +0000 (UTC)", "from pxdev.xzpeter.org.com (dhcp-14-103.nay.redhat.com\n\t[10.66.14.103])\n\tby smtp.corp.redhat.com (Postfix) with ESMTP id 77B2C871E6;\n\tWed, 30 Aug 2017 08:35:19 +0000 (UTC)" ], "DMARC-Filter": "OpenDMARC Filter v1.3.2 mx1.redhat.com D37F413AB0", "From": "Peter Xu <peterx@redhat.com>", "To": "qemu-devel@nongnu.org", "Date": "Wed, 30 Aug 2017 16:32:25 +0800", "Message-Id": "<1504081950-2528-29-git-send-email-peterx@redhat.com>", "In-Reply-To": "<1504081950-2528-1-git-send-email-peterx@redhat.com>", "References": "<1504081950-2528-1-git-send-email-peterx@redhat.com>", "X-Scanned-By": "MIMEDefang 2.79 on 10.5.11.15", "X-Greylist": "Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.5.110.29]);\n\tWed, 30 Aug 2017 08:35:23 +0000 (UTC)", "X-detected-operating-system": "by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]\n\t[fuzzy]", "X-Received-From": "209.132.183.28", "Subject": "[Qemu-devel] [RFC v2 28/33] migration: return incoming task tag for\n\tsockets", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Id": "<qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<http://lists.nongnu.org/archive/html/qemu-devel/>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Cc": "Laurent Vivier <lvivier@redhat.com>,\n\tAndrea Arcangeli <aarcange@redhat.com>, \n\tJuan Quintela <quintela@redhat.com>,\n\tAlexey Perevalov <a.perevalov@samsung.com>, peterx@redhat.com,\n\t\"Dr . David Alan Gilbert\" <dgilbert@redhat.com>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "\"Qemu-devel\"\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>" }, "content": "For socket based incoming migration, we attached a background task onto\nmain loop to handle the acception of connections. We never had a way to\ndestroy it before, only if we finished the migration.\n\nLet's allow socket_start_incoming_migration() to return the source tag\nof the listening async work, so that we may be able to clean it up in\nthe future.\n\nSigned-off-by: Peter Xu <peterx@redhat.com>\n---\n migration/socket.c | 36 ++++++++++++++++++++++++------------\n migration/socket.h | 4 ++--\n 2 files changed, 26 insertions(+), 14 deletions(-)", "diff": "diff --git a/migration/socket.c b/migration/socket.c\nindex 9fc6cb3..6ee51ef 100644\n--- a/migration/socket.c\n+++ b/migration/socket.c\n@@ -158,8 +158,12 @@ out:\n }\n \n \n-static void socket_start_incoming_migration(SocketAddress *saddr,\n- Error **errp)\n+/*\n+ * Returns the tag ID of the watch that is attached to global main\n+ * loop (>0), or zero if failure detected.\n+ */\n+static guint socket_start_incoming_migration(SocketAddress *saddr,\n+ Error **errp)\n {\n QIOChannelSocket *listen_ioc = qio_channel_socket_new();\n \n@@ -168,30 +172,38 @@ static void socket_start_incoming_migration(SocketAddress *saddr,\n \n if (qio_channel_socket_listen_sync(listen_ioc, saddr, errp) < 0) {\n object_unref(OBJECT(listen_ioc));\n- return;\n+ return 0;\n }\n \n- qio_channel_add_watch(QIO_CHANNEL(listen_ioc),\n- G_IO_IN,\n- socket_accept_incoming_migration,\n- listen_ioc,\n- (GDestroyNotify)object_unref);\n+ return qio_channel_add_watch(QIO_CHANNEL(listen_ioc),\n+ G_IO_IN,\n+ socket_accept_incoming_migration,\n+ listen_ioc,\n+ (GDestroyNotify)object_unref);\n }\n \n-void tcp_start_incoming_migration(const char *host_port, Error **errp)\n+guint tcp_start_incoming_migration(const char *host_port, Error **errp)\n {\n Error *err = NULL;\n SocketAddress *saddr = tcp_build_address(host_port, &err);\n+ guint tag;\n+\n if (!err) {\n- socket_start_incoming_migration(saddr, &err);\n+ tag = socket_start_incoming_migration(saddr, &err);\n }\n error_propagate(errp, err);\n qapi_free_SocketAddress(saddr);\n+\n+ return tag;\n }\n \n-void unix_start_incoming_migration(const char *path, Error **errp)\n+guint unix_start_incoming_migration(const char *path, Error **errp)\n {\n SocketAddress *saddr = unix_build_address(path);\n- socket_start_incoming_migration(saddr, errp);\n+ guint tag;\n+\n+ tag = socket_start_incoming_migration(saddr, errp);\n qapi_free_SocketAddress(saddr);\n+\n+ return tag;\n }\ndiff --git a/migration/socket.h b/migration/socket.h\nindex 6b91e9d..bc8a59a 100644\n--- a/migration/socket.h\n+++ b/migration/socket.h\n@@ -16,12 +16,12 @@\n \n #ifndef QEMU_MIGRATION_SOCKET_H\n #define QEMU_MIGRATION_SOCKET_H\n-void tcp_start_incoming_migration(const char *host_port, Error **errp);\n+guint tcp_start_incoming_migration(const char *host_port, Error **errp);\n \n void tcp_start_outgoing_migration(MigrationState *s, const char *host_port,\n Error **errp);\n \n-void unix_start_incoming_migration(const char *path, Error **errp);\n+guint unix_start_incoming_migration(const char *path, Error **errp);\n \n void unix_start_outgoing_migration(MigrationState *s, const char *path,\n Error **errp);\n", "prefixes": [ "RFC", "v2", "28/33" ] }