From patchwork Tue Mar 12 14:02:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= X-Patchwork-Id: 13590049 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BDC29C54E58 for ; Tue, 12 Mar 2024 14:03:48 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rk2j1-00024k-7h; Tue, 12 Mar 2024 10:03:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rk2iX-0001eQ-5a for qemu-devel@nongnu.org; Tue, 12 Mar 2024 10:02:57 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rk2iV-0008Rl-1X for qemu-devel@nongnu.org; Tue, 12 Mar 2024 10:02:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1710252171; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ObhuA3H8+Qw8iGJTgr6GIHo8x03k3oRryE1X3xAmIPA=; b=hLFyMS7Vc5LW0YObBfcliCwRLJeTttEX0HUCKBE1cb0iVYB0AFmCevZL+4ui30xzTnIRif NlSrj3L1cUwPW7qM0WefpnqrgP2gPM6LKfN7PRas/dSy//yUEp1FclvVBa7AlVRGQMZNQ1 BqKzatCRy9vwm+ZRU/cenBVaPPYPj70= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-557-7sDNVoeGO1-O5NiyWHWg_w-1; Tue, 12 Mar 2024 10:02:41 -0400 X-MC-Unique: 7sDNVoeGO1-O5NiyWHWg_w-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 69D5D3803526; Tue, 12 Mar 2024 14:02:39 +0000 (UTC) Received: from localhost (unknown [10.39.208.42]) by smtp.corp.redhat.com (Postfix) with ESMTP id 605381C060CE; Tue, 12 Mar 2024 14:02:37 +0000 (UTC) From: marcandre.lureau@redhat.com To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Gerd Hoffmann , "Michael S. Tsirkin" Subject: [PULL 3/5] ui/dbus: filter out pending messages when scanout Date: Tue, 12 Mar 2024 18:02:14 +0400 Message-ID: <20240312140216.313618-4-marcandre.lureau@redhat.com> In-Reply-To: <20240312140216.313618-1-marcandre.lureau@redhat.com> References: <20240312140216.313618-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 Received-SPF: pass client-ip=170.10.129.124; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.687, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Marc-André Lureau The "Listener" connection, being private and under the control of the qemu display, allows for the optimization of discarding pending intermediary messages when queuing a new scanout. This ensures that the client receives only the latest scanout update, improving communication efficiency. While the current implementation does not provide a mechanism for clients who may wish to receive all updates, making this behavior optional could be considered in the future. For now, adopting this new default behavior accelerates the communication process without a guarantee of delivering all updates. The filter is removed when the connection is dropped. Signed-off-by: Marc-André Lureau --- ui/dbus-listener.c | 40 ++++++++++++++++++++++++++++++++++++++++ ui/trace-events | 1 + 2 files changed, 41 insertions(+) diff --git a/ui/dbus-listener.c b/ui/dbus-listener.c index 3f4529dbbd..4a0a5d78f9 100644 --- a/ui/dbus-listener.c +++ b/ui/dbus-listener.c @@ -83,6 +83,9 @@ struct _DBusDisplayListener { egl_fb fb; #endif #endif + + guint dbus_filter; + guint32 out_serial_to_discard; }; G_DEFINE_TYPE(DBusDisplayListener, dbus_display_listener, G_TYPE_OBJECT) @@ -90,6 +93,12 @@ G_DEFINE_TYPE(DBusDisplayListener, dbus_display_listener, G_TYPE_OBJECT) static void dbus_gfx_update(DisplayChangeListener *dcl, int x, int y, int w, int h); +static void ddl_discard_pending_messages(DBusDisplayListener *ddl) +{ + ddl->out_serial_to_discard = g_dbus_connection_get_last_serial( + g_dbus_proxy_get_connection(G_DBUS_PROXY(ddl->proxy))); +} + #ifdef CONFIG_OPENGL static void dbus_scanout_disable(DisplayChangeListener *dcl) { @@ -276,6 +285,8 @@ static void dbus_scanout_dmabuf(DisplayChangeListener *dcl, return; } + ddl_discard_pending_messages(ddl); + /* FIXME: add missing x/y/w/h support */ qemu_dbus_display1_listener_call_scanout_dmabuf( ddl->proxy, @@ -323,6 +334,8 @@ static bool dbus_scanout_map(DBusDisplayListener *ddl) return false; } + ddl_discard_pending_messages(ddl); + if (!qemu_dbus_display1_listener_win32_map_call_scanout_map_sync( ddl->map_proxy, GPOINTER_TO_UINT(target_handle), @@ -384,6 +397,8 @@ dbus_scanout_share_d3d_texture( return false; } + ddl_discard_pending_messages(ddl); + qemu_dbus_display1_listener_win32_d3d11_call_scanout_texture2d( ddl->d3d11_proxy, GPOINTER_TO_INT(target_handle), @@ -639,6 +654,8 @@ static void ddl_scanout(DBusDisplayListener *ddl) surface_stride(ddl->ds) * surface_height(ddl->ds), TRUE, (GDestroyNotify)pixman_image_unref, pixman_image_ref(ddl->ds->image)); + ddl_discard_pending_messages(ddl); + qemu_dbus_display1_listener_call_scanout( ddl->proxy, surface_width(ddl->ds), surface_height(ddl->ds), surface_stride(ddl->ds), surface_format(ddl->ds), v_data, @@ -963,6 +980,28 @@ dbus_display_listener_setup_shared_map(DBusDisplayListener *ddl) #endif } +static GDBusMessage * +dbus_filter(GDBusConnection *connection, + GDBusMessage *message, + gboolean incoming, + gpointer user_data) +{ + DBusDisplayListener *ddl = DBUS_DISPLAY_LISTENER(user_data); + guint32 serial; + + if (incoming) { + return message; + } + + serial = g_dbus_message_get_serial(message); + if (serial <= ddl->out_serial_to_discard) { + trace_dbus_filter(serial, ddl->out_serial_to_discard); + return NULL; + } + + return message; +} + DBusDisplayListener * dbus_display_listener_new(const char *bus_name, GDBusConnection *conn, @@ -987,6 +1026,7 @@ dbus_display_listener_new(const char *bus_name, return NULL; } + ddl->dbus_filter = g_dbus_connection_add_filter(conn, dbus_filter, g_object_ref(ddl), g_object_unref); ddl->bus_name = g_strdup(bus_name); ddl->conn = conn; ddl->console = console; diff --git a/ui/trace-events b/ui/trace-events index 16c35c9fd6..e6a2894303 100644 --- a/ui/trace-events +++ b/ui/trace-events @@ -161,6 +161,7 @@ dbus_clipboard_register(const char *bus_name) "peer %s" dbus_clipboard_unregister(const char *bus_name) "peer %s" dbus_scanout_texture(uint32_t tex_id, bool backing_y_0_top, uint32_t backing_width, uint32_t backing_height, uint32_t x, uint32_t y, uint32_t w, uint32_t h) "tex_id:%u y0top:%d back:%ux%u %u+%u-%ux%u" dbus_gl_gfx_switch(void *p) "surf: %p" +dbus_filter(unsigned int serial, unsigned int filter) "serial=%u (<= %u)" # egl-helpers.c egl_init_d3d11_device(void *p) "d3d device: %p"