[PATCH spice-server 06/10] Move thread/dispatching handling to RedChannel

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Currently channel threading/handling is spread between RedQxl,
RedWorker and RedChannel.
Move more to RedChannel simplify RedQxl and RedWorker.

Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
---
 server/cursor-channel.c    |   4 +-
 server/cursor-channel.h    |   4 +-
 server/display-channel.c   |   2 +
 server/display-channel.h   |   1 +
 server/red-channel.c       | 111 +++++++++++++++++++++++++++++--
 server/red-qxl.c           | 110 +-----------------------------
 server/red-replay-qxl.c    |   3 -
 server/red-stream-device.c |   2 +-
 server/red-worker.c        | 133 ++++++++++---------------------------
 server/red-worker.h        |  46 ++-----------
 10 files changed, 160 insertions(+), 256 deletions(-)

diff --git a/server/cursor-channel.c b/server/cursor-channel.c
index 4220084f..e8af01b0 100644
--- a/server/cursor-channel.c
+++ b/server/cursor-channel.c
@@ -228,7 +228,8 @@ static void cursor_channel_send_item(RedChannelClient *rcc, RedPipeItem *pipe_it
 }
 
 CursorChannel* cursor_channel_new(RedsState *server, int id,
-                                  const SpiceCoreInterfaceInternal *core)
+                                  const SpiceCoreInterfaceInternal *core,
+                                  Dispatcher *dispatcher)
 {
     spice_debug("create cursor channel");
     return g_object_new(TYPE_CURSOR_CHANNEL,
@@ -238,6 +239,7 @@ CursorChannel* cursor_channel_new(RedsState *server, int id,
                         "id", id,
                         "migration-flags", 0,
                         "handle-acks", TRUE,
+                        "dispatcher", dispatcher,
                         NULL);
 }
 
diff --git a/server/cursor-channel.h b/server/cursor-channel.h
index 603c2c0a..767325ea 100644
--- a/server/cursor-channel.h
+++ b/server/cursor-channel.h
@@ -21,6 +21,7 @@
 
 #include "common-graphics-channel.h"
 #include "red-parse-qxl.h"
+#include "dispatcher.h"
 
 G_BEGIN_DECLS
 
@@ -57,7 +58,8 @@ GType cursor_channel_get_type(void) G_GNUC_CONST;
  * CursorChannel thread.
  */
 CursorChannel* cursor_channel_new(RedsState *server, int id,
-                                  const SpiceCoreInterfaceInternal *core);
+                                  const SpiceCoreInterfaceInternal *core,
+                                  Dispatcher *dispatcher);
 
 void                 cursor_channel_reset       (CursorChannel *cursor);
 void                 cursor_channel_do_init     (CursorChannel *cursor);
diff --git a/server/display-channel.c b/server/display-channel.c
index e179abfd..cb052bfc 100644
--- a/server/display-channel.c
+++ b/server/display-channel.c
@@ -2227,6 +2227,7 @@ static SpiceCanvas *image_surfaces_get(SpiceImageSurfaces *surfaces, uint32_t su
 DisplayChannel* display_channel_new(RedsState *reds,
                                     QXLInstance *qxl,
                                     const SpiceCoreInterfaceInternal *core,
+                                    Dispatcher *dispatcher,
                                     int migrate, int stream_video,
                                     GArray *video_codecs,
                                     uint32_t n_surfaces)
@@ -2246,6 +2247,7 @@ DisplayChannel* display_channel_new(RedsState *reds,
                            "n-surfaces", n_surfaces,
                            "video-codecs", video_codecs,
                            "handle-acks", TRUE,
+                           "dispatcher", dispatcher,
                            NULL);
     if (display) {
         display_channel_set_stream_video(display, stream_video);
diff --git a/server/display-channel.h b/server/display-channel.h
index 948018cf..f64da0bd 100644
--- a/server/display-channel.h
+++ b/server/display-channel.h
@@ -99,6 +99,7 @@ struct Drawable {
 DisplayChannel*            display_channel_new                       (RedsState *reds,
                                                                       QXLInstance *qxl,
                                                                       const SpiceCoreInterfaceInternal *core,
+                                                                      Dispatcher *dispatcher,
                                                                       int migrate,
                                                                       int stream_video,
                                                                       GArray *video_codecs,
diff --git a/server/red-channel.c b/server/red-channel.c
index 1d88739e..8d05c971 100644
--- a/server/red-channel.c
+++ b/server/red-channel.c
@@ -70,6 +70,9 @@ struct RedChannelPrivate
     uint32_t type;
     uint32_t id;
 
+    /* "core" interface to register events.
+     * Can be thread specific.
+     */
     SpiceCoreInterfaceInternal *core;
     gboolean handle_acks;
 
@@ -90,12 +93,29 @@ struct RedChannelPrivate
     // TODO: when different channel_clients are in different threads
     // from Channel -> need to protect!
     pthread_t thread_id;
+    Dispatcher *dispatcher;
     RedsState *reds;
     RedStatNode stat;
 };
 
 G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE(RedChannel, red_channel, G_TYPE_OBJECT)
 
+typedef struct RedMessageConnect {
+    RedChannel *channel;
+    RedClient *client;
+    RedStream *stream;
+    RedChannelCapabilities caps;
+    int migration;
+} RedMessageConnect;
+
+typedef struct RedMessageDisconnect {
+    RedChannelClient *rcc;
+} RedMessageDisconnect;
+
+typedef struct RedMessageMigrate {
+    RedChannelClient *rcc;
+} RedMessageMigrate;
+
 enum {
     PROP0,
     PROP_SPICE_SERVER,
@@ -103,7 +123,8 @@ enum {
     PROP_TYPE,
     PROP_ID,
     PROP_HANDLE_ACKS,
-    PROP_MIGRATION_FLAGS
+    PROP_MIGRATION_FLAGS,
+    PROP_DISPATCHER,
 };
 
 static void
@@ -134,6 +155,9 @@ red_channel_get_property(GObject *object,
         case PROP_MIGRATION_FLAGS:
             g_value_set_uint(value, self->priv->migration_flags);
             break;
+        case PROP_DISPATCHER:
+            g_value_set_object(value, self->priv->dispatcher);
+            break;
         default:
             G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
     }
@@ -167,6 +191,12 @@ red_channel_set_property(GObject *object,
         case PROP_MIGRATION_FLAGS:
             self->priv->migration_flags = g_value_get_uint(value);
             break;
+        case PROP_DISPATCHER:
+            if (self->priv->dispatcher) {
+                g_object_unref(self->priv->dispatcher);
+            }
+            self->priv->dispatcher = g_value_dup_object(value);
+            break;
         default:
             G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
     }
@@ -177,6 +207,7 @@ red_channel_finalize(GObject *object)
 {
     RedChannel *self = RED_CHANNEL(object);
 
+    g_clear_object(&self->priv->dispatcher);
     red_channel_capabilities_reset(&self->priv->local_caps);
 
     G_OBJECT_CLASS(red_channel_parent_class)->finalize(object);
@@ -279,6 +310,14 @@ red_channel_class_init(RedChannelClass *klass)
                              G_PARAM_CONSTRUCT_ONLY |
                              G_PARAM_STATIC_STRINGS);
     g_object_class_install_property(object_class, PROP_MIGRATION_FLAGS, spec);
+
+    spec = g_param_spec_object("dispatcher", "dispatcher",
+                               "Dispatcher bound to channel thread",
+                               TYPE_DISPATCHER,
+                               G_PARAM_STATIC_STRINGS
+                               | G_PARAM_READWRITE
+                               | G_PARAM_CONSTRUCT_ONLY);
+    g_object_class_install_property(object_class, PROP_DISPATCHER, spec);
 }
 
 static void
@@ -483,11 +522,40 @@ void red_channel_disconnect(RedChannel *channel)
     red_channel_foreach_client(channel, red_channel_client_disconnect);
 }
 
+static void handle_dispatcher_connect(void *opaque, void *payload)
+{
+    RedMessageConnect *msg = payload;
+    RedChannel *channel = msg->channel;
+
+    channel->priv->client_cbs.connect(channel, msg->client, msg->stream,
+                                      msg->migration, &msg->caps);
+    g_object_unref(msg->client);
+    red_channel_capabilities_reset(&msg->caps);
+}
+
 void red_channel_connect(RedChannel *channel, RedClient *client,
                          RedStream *stream, int migration,
                          RedChannelCapabilities *caps)
 {
-    channel->priv->client_cbs.connect(channel, client, stream, migration, caps);
+    if (channel->priv->dispatcher == NULL ||
+        pthread_equal(pthread_self(), channel->priv->thread_id)) {
+        channel->priv->client_cbs.connect(channel, client, stream, migration, caps);
+        return;
+    }
+
+    RedMessageConnect payload = {0,};
+    Dispatcher *dispatcher = channel->priv->dispatcher;
+
+    // get a reference potentially the main channel can be destroyed in
+    // the main thread causing RedClient to be destroyed before using it
+    payload.channel = channel;
+    payload.client = g_object_ref(client);
+    payload.stream = stream;
+    payload.migration = migration;
+    red_channel_capabilities_init(&payload.caps, caps);
+
+    dispatcher_send_message_generic(dispatcher, handle_dispatcher_connect,
+                                    &payload, sizeof(payload), false);
 }
 
 GList *red_channel_get_clients(RedChannel *channel)
@@ -690,12 +758,47 @@ const RedChannelCapabilities* red_channel_get_local_capabilities(RedChannel *sel
     return &self->priv->local_caps;
 }
 
+static void handle_dispatcher_migrate(void *opaque, void *payload)
+{
+    RedMessageMigrate *msg = payload;
+    RedChannel *channel = red_channel_client_get_channel(msg->rcc);
+
+    channel->priv->client_cbs.migrate(msg->rcc);
+    g_object_unref(msg->rcc);
+}
+
 void red_channel_migrate_client(RedChannel *channel, RedChannelClient *rcc)
 {
-    channel->priv->client_cbs.migrate(rcc);
+    if (channel->priv->dispatcher == NULL ||
+        pthread_equal(pthread_self(), channel->priv->thread_id)) {
+        channel->priv->client_cbs.migrate(rcc);
+        return;
+    }
+
+    RedMessageMigrate payload = { .rcc = g_object_ref(rcc) };
+    dispatcher_send_message_generic(channel->priv->dispatcher, handle_dispatcher_migrate,
+                                    &payload, sizeof(payload), false);
+}
+
+static void handle_dispatcher_disconnect(void *opaque, void *payload)
+{
+    RedMessageDisconnect *msg = payload;
+    RedChannel *channel = red_channel_client_get_channel(msg->rcc);
+
+    channel->priv->client_cbs.disconnect(msg->rcc);
 }
 
 void red_channel_disconnect_client(RedChannel *channel, RedChannelClient *rcc)
 {
-    channel->priv->client_cbs.disconnect(rcc);
+    if (channel->priv->dispatcher == NULL ||
+        pthread_equal(pthread_self(), channel->priv->thread_id)) {
+        channel->priv->client_cbs.disconnect(rcc);
+        return;
+    }
+
+    // TODO: we turned it to be sync, due to client_destroy . Should we support async? - for this we will need ref count
+    // for channels
+    RedMessageDisconnect payload = { .rcc = rcc };
+    dispatcher_send_message_generic(channel->priv->dispatcher, handle_dispatcher_disconnect,
+                                    &payload, sizeof(payload), true);
 }
diff --git a/server/red-qxl.c b/server/red-qxl.c
index 0dd26b22..af2c7ed5 100644
--- a/server/red-qxl.c
+++ b/server/red-qxl.c
@@ -75,102 +75,6 @@ int red_qxl_check_qxl_version(QXLInstance *qxl, int major, int minor)
             ((qxl_major == major) && (qxl_minor >= minor)));
 }
 
-static void red_qxl_set_display_peer(RedChannel *channel, RedClient *client,
-                                     RedStream *stream, int migration,
-                                     RedChannelCapabilities *caps)
-{
-    RedWorkerMessageDisplayConnect payload = {0,};
-    Dispatcher *dispatcher;
-
-    spice_debug("%s", "");
-    dispatcher = (Dispatcher *)g_object_get_data(G_OBJECT(channel), "dispatcher");
-    // get a reference potentially the main channel can be destroyed in
-    // the main thread causing RedClient to be destroyed before using it
-    payload.client = g_object_ref(client);
-    payload.stream = stream;
-    payload.migration = migration;
-    red_channel_capabilities_init(&payload.caps, caps);
-
-    dispatcher_send_message(dispatcher,
-                            RED_WORKER_MESSAGE_DISPLAY_CONNECT,
-                            &payload);
-}
-
-static void red_qxl_disconnect_display_peer(RedChannelClient *rcc)
-{
-    RedWorkerMessageDisplayDisconnect payload;
-    Dispatcher *dispatcher;
-    RedChannel *channel = red_channel_client_get_channel(rcc);
-
-    dispatcher = (Dispatcher *)g_object_get_data(G_OBJECT(channel), "dispatcher");
-
-    payload.rcc = rcc;
-
-    // TODO: we turned it to be sync, due to client_destroy . Should we support async? - for this we will need ref count
-    // for channels
-    dispatcher_send_message(dispatcher,
-                            RED_WORKER_MESSAGE_DISPLAY_DISCONNECT,
-                            &payload);
-}
-
-static void red_qxl_display_migrate(RedChannelClient *rcc)
-{
-    RedWorkerMessageDisplayMigrate payload;
-    Dispatcher *dispatcher;
-    RedChannel *channel = red_channel_client_get_channel(rcc);
-
-    dispatcher = (Dispatcher *)g_object_get_data(G_OBJECT(channel), "dispatcher");
-    payload.rcc = g_object_ref(rcc);
-    dispatcher_send_message(dispatcher,
-                            RED_WORKER_MESSAGE_DISPLAY_MIGRATE,
-                            &payload);
-}
-
-static void red_qxl_set_cursor_peer(RedChannel *channel, RedClient *client, RedStream *stream,
-                                    int migration,
-                                    RedChannelCapabilities *caps)
-{
-    RedWorkerMessageCursorConnect payload = {0,};
-    Dispatcher *dispatcher = (Dispatcher *)g_object_get_data(G_OBJECT(channel), "dispatcher");
-    // get a reference potentially the main channel can be destroyed in
-    // the main thread causing RedClient to be destroyed before using it
-    payload.client = g_object_ref(client);
-    payload.stream = stream;
-    payload.migration = migration;
-    red_channel_capabilities_init(&payload.caps, caps);
-
-    dispatcher_send_message(dispatcher,
-                            RED_WORKER_MESSAGE_CURSOR_CONNECT,
-                            &payload);
-}
-
-static void red_qxl_disconnect_cursor_peer(RedChannelClient *rcc)
-{
-    RedWorkerMessageCursorDisconnect payload;
-    Dispatcher *dispatcher;
-    RedChannel *channel = red_channel_client_get_channel(rcc);
-
-    dispatcher = (Dispatcher *)g_object_get_data(G_OBJECT(channel), "dispatcher");
-    payload.rcc = rcc;
-
-    dispatcher_send_message(dispatcher,
-                            RED_WORKER_MESSAGE_CURSOR_DISCONNECT,
-                            &payload);
-}
-
-static void red_qxl_cursor_migrate(RedChannelClient *rcc)
-{
-    RedWorkerMessageCursorMigrate payload;
-    Dispatcher *dispatcher;
-    RedChannel *channel = red_channel_client_get_channel(rcc);
-
-    dispatcher = (Dispatcher *)g_object_get_data(G_OBJECT(channel), "dispatcher");
-    payload.rcc = g_object_ref(rcc);
-    dispatcher_send_message(dispatcher,
-                            RED_WORKER_MESSAGE_CURSOR_MIGRATE,
-                            &payload);
-}
-
 static void red_qxl_update_area(QXLState *qxl_state, uint32_t surface_id,
                                 QXLRect *qxl_area, QXLRect *qxl_dirty_rects,
                                 uint32_t num_dirty_rects, uint32_t clear_dirty_region)
@@ -914,8 +818,6 @@ size_t red_qxl_get_monitors_count(const QXLInstance *qxl)
 void red_qxl_init(RedsState *reds, QXLInstance *qxl)
 {
     QXLState *qxl_state;
-    ClientCbs client_cursor_cbs = { NULL, };
-    ClientCbs client_display_cbs = { NULL, };
 
     spice_return_if_fail(qxl != NULL);
 
@@ -948,17 +850,7 @@ void red_qxl_init(RedsState *reds, QXLInstance *qxl)
     qxl_state->max_monitors = UINT_MAX;
     qxl->st = qxl_state;
 
-    // TODO: move to their respective channel files
-    client_cursor_cbs.connect = red_qxl_set_cursor_peer;
-    client_cursor_cbs.disconnect = red_qxl_disconnect_cursor_peer;
-    client_cursor_cbs.migrate = red_qxl_cursor_migrate;
-
-    client_display_cbs.connect = red_qxl_set_display_peer;
-    client_display_cbs.disconnect = red_qxl_disconnect_display_peer;
-    client_display_cbs.migrate = red_qxl_display_migrate;
-
-    qxl_state->worker = red_worker_new(qxl, &client_cursor_cbs,
-                                       &client_display_cbs);
+    qxl_state->worker = red_worker_new(qxl);
 
     red_worker_run(qxl_state->worker);
 }
diff --git a/server/red-replay-qxl.c b/server/red-replay-qxl.c
index 4884e97e..8124c1fd 100644
--- a/server/red-replay-qxl.c
+++ b/server/red-replay-qxl.c
@@ -1283,9 +1283,6 @@ static void replay_handle_dev_input(QXLWorker *worker, SpiceReplay *replay,
         break;
     case RED_WORKER_MESSAGE_UPDATE:
         // XXX do anything? we record the correct bitmaps already.
-    case RED_WORKER_MESSAGE_DISPLAY_CONNECT:
-        // we want to ignore this one - it is sent on client connection, we
-        // shall have our own clients
     case RED_WORKER_MESSAGE_WAKEUP:
         // safe to ignore
         break;
diff --git a/server/red-stream-device.c b/server/red-stream-device.c
index 78a8c908..cf5a6e9a 100644
--- a/server/red-stream-device.c
+++ b/server/red-stream-device.c
@@ -696,7 +696,7 @@ stream_device_create_channel(StreamDevice *dev)
 
     StreamChannel *stream_channel = stream_channel_new(reds, id);
 
-    CursorChannel *cursor_channel = cursor_channel_new(reds, id, core);
+    CursorChannel *cursor_channel = cursor_channel_new(reds, id, core, NULL);
     ClientCbs client_cbs = { NULL, };
     client_cbs.connect = (channel_client_connect_proc) cursor_channel_connect;
     client_cbs.migrate = cursor_channel_client_migrate;
diff --git a/server/red-worker.c b/server/red-worker.c
index 3cb12b9c..07329b17 100644
--- a/server/red-worker.c
+++ b/server/red-worker.c
@@ -694,20 +694,22 @@ static void handle_dev_create_primary_surface_async(void *opaque, void *payload)
     red_qxl_async_complete(worker->qxl, msg->base.cookie);
 }
 
-static void handle_dev_display_connect(void *opaque, void *payload)
+static void
+handle_dev_display_connect(RedChannel *channel, RedClient *client,
+                           RedStream *stream, int migration,
+                           RedChannelCapabilities *caps)
 {
-    RedWorkerMessageDisplayConnect *msg = payload;
-    RedWorker *worker = opaque;
-    DisplayChannel *display = worker->display_channel;
+    DisplayChannel *display = DISPLAY_CHANNEL(channel);
     DisplayChannelClient *dcc;
+    RedWorker *worker = g_object_get_data(G_OBJECT(channel), "worker");
 
     spice_debug("connect new client");
-    spice_return_if_fail(display);
 
-    dcc = dcc_new(display, msg->client, msg->stream, msg->migration, &msg->caps,
-                  worker->image_compression, worker->jpeg_state, worker->zlib_glz_state);
-    g_object_unref(msg->client);
-    red_channel_capabilities_reset(&msg->caps);
+    // FIXME not sure how safe is reading directly from reds
+    SpiceServer *reds = red_channel_get_server(channel);
+    dcc = dcc_new(display, client, stream, migration, caps,
+                  spice_server_get_image_compression(reds), reds_get_jpeg_state(reds),
+                  reds_get_zlib_glz_state(reds));
     if (!dcc) {
         return;
     }
@@ -716,30 +718,21 @@ static void handle_dev_display_connect(void *opaque, void *payload)
     dcc_start(dcc);
 }
 
-static void handle_dev_display_disconnect(void *opaque, void *payload)
+static void
+handle_dev_display_disconnect(RedChannelClient *rcc)
 {
-    RedWorkerMessageDisplayDisconnect *msg = payload;
-    RedChannelClient *rcc = msg->rcc;
-    RedWorker *worker = opaque;
-
-    spice_debug("disconnect display client");
-    spice_assert(rcc);
+    RedChannel *channel = red_channel_client_get_channel(rcc);
+    RedWorker *worker = g_object_get_data(G_OBJECT(channel), "worker");
 
     guest_set_client_capabilities(worker);
 
     red_channel_client_disconnect(rcc);
 }
 
-static void handle_dev_display_migrate(void *opaque, void *payload)
+static void handle_dev_display_migrate(RedChannelClient *rcc)
 {
-    RedWorkerMessageDisplayMigrate *msg = payload;
-    RedWorker *worker = opaque;
-
-    RedChannelClient *rcc = msg->rcc;
-    spice_debug("migrate display client");
-    spice_assert(rcc);
-    red_migrate_display(worker->display_channel, rcc);
-    g_object_unref(rcc);
+    DisplayChannel *display = DISPLAY_CHANNEL(red_channel_client_get_channel(rcc));
+    red_migrate_display(display, rcc);
 }
 
 static inline uint32_t qxl_monitors_config_size(uint32_t heads)
@@ -791,40 +784,6 @@ async_complete:
     red_qxl_async_complete(worker->qxl, msg->base.cookie);
 }
 
-/* TODO: special, perhaps use another dispatcher? */
-static void handle_dev_cursor_connect(void *opaque, void *payload)
-{
-    RedWorkerMessageCursorConnect *msg = payload;
-    RedWorker *worker = opaque;
-
-    spice_debug("cursor connect");
-    cursor_channel_connect(worker->cursor_channel,
-                           msg->client, msg->stream, msg->migration,
-                           &msg->caps);
-    g_object_unref(msg->client);
-    red_channel_capabilities_reset(&msg->caps);
-}
-
-static void handle_dev_cursor_disconnect(void *opaque, void *payload)
-{
-    RedWorkerMessageCursorDisconnect *msg = payload;
-    RedChannelClient *rcc = msg->rcc;
-
-    spice_debug("disconnect cursor client");
-    spice_return_if_fail(rcc);
-    red_channel_client_disconnect(rcc);
-}
-
-static void handle_dev_cursor_migrate(void *opaque, void *payload)
-{
-    RedWorkerMessageCursorMigrate *msg = payload;
-    RedChannelClient *rcc = msg->rcc;
-
-    spice_debug("migrate cursor client");
-    cursor_channel_client_migrate(rcc);
-    g_object_unref(rcc);
-}
-
 static void handle_dev_set_compression(void *opaque, void *payload)
 {
     RedWorkerMessageSetCompression *msg = payload;
@@ -998,36 +957,6 @@ static void worker_dispatcher_record(void *opaque, uint32_t message_type, void *
 static void register_callbacks(Dispatcher *dispatcher)
 {
     /* TODO: register cursor & display specific msg in respective channel files */
-    dispatcher_register_handler(dispatcher,
-                                RED_WORKER_MESSAGE_DISPLAY_CONNECT,
-                                handle_dev_display_connect,
-                                sizeof(RedWorkerMessageDisplayConnect),
-                                false);
-    dispatcher_register_handler(dispatcher,
-                                RED_WORKER_MESSAGE_DISPLAY_DISCONNECT,
-                                handle_dev_display_disconnect,
-                                sizeof(RedWorkerMessageDisplayDisconnect),
-                                true);
-    dispatcher_register_handler(dispatcher,
-                                RED_WORKER_MESSAGE_DISPLAY_MIGRATE,
-                                handle_dev_display_migrate,
-                                sizeof(RedWorkerMessageDisplayMigrate),
-                                false);
-    dispatcher_register_handler(dispatcher,
-                                RED_WORKER_MESSAGE_CURSOR_CONNECT,
-                                handle_dev_cursor_connect,
-                                sizeof(RedWorkerMessageCursorConnect),
-                                false);
-    dispatcher_register_handler(dispatcher,
-                                RED_WORKER_MESSAGE_CURSOR_DISCONNECT,
-                                handle_dev_cursor_disconnect,
-                                sizeof(RedWorkerMessageCursorDisconnect),
-                                true);
-    dispatcher_register_handler(dispatcher,
-                                RED_WORKER_MESSAGE_CURSOR_MIGRATE,
-                                handle_dev_cursor_migrate,
-                                sizeof(RedWorkerMessageCursorMigrate),
-                                false);
     dispatcher_register_handler(dispatcher,
                                 RED_WORKER_MESSAGE_UPDATE,
                                 handle_dev_update,
@@ -1259,9 +1188,7 @@ static GSourceFuncs worker_source_funcs = {
     .dispatch = worker_source_dispatch,
 };
 
-RedWorker* red_worker_new(QXLInstance *qxl,
-                          const ClientCbs *client_cursor_cbs,
-                          const ClientCbs *client_display_cbs)
+RedWorker* red_worker_new(QXLInstance *qxl)
 {
     QXLDevInitInfo init_info;
     RedWorker *worker;
@@ -1317,21 +1244,31 @@ RedWorker* red_worker_new(QXLInstance *qxl,
     worker->event_timeout = INF_EVENT_WAIT;
 
     worker->cursor_channel = cursor_channel_new(reds, qxl->id,
-                                                &worker->core);
+                                                &worker->core, dispatcher);
     channel = RED_CHANNEL(worker->cursor_channel);
     red_channel_init_stat_node(channel, &worker->stat, "cursor_channel");
-    red_channel_register_client_cbs(channel, client_cursor_cbs);
-    g_object_set_data(G_OBJECT(channel), "dispatcher", dispatcher);
+
+    ClientCbs client_cursor_cbs = { NULL, };
+    client_cursor_cbs.connect = (channel_client_connect_proc) cursor_channel_connect;
+    client_cursor_cbs.disconnect = NULL;
+    client_cursor_cbs.migrate = cursor_channel_client_migrate;
+    red_channel_register_client_cbs(channel, &client_cursor_cbs);
 
     // TODO: handle seamless migration. Temp, setting migrate to FALSE
-    worker->display_channel = display_channel_new(reds, qxl, &worker->core, FALSE,
+    worker->display_channel = display_channel_new(reds, qxl, &worker->core, dispatcher,
+                                                  FALSE,
                                                   reds_get_streaming_video(reds),
                                                   reds_get_video_codecs(reds),
                                                   init_info.n_surfaces);
     channel = RED_CHANNEL(worker->display_channel);
     red_channel_init_stat_node(channel, &worker->stat, "display_channel");
-    red_channel_register_client_cbs(channel, client_display_cbs);
-    g_object_set_data(G_OBJECT(channel), "dispatcher", dispatcher);
+    g_object_set_data(G_OBJECT(channel), "worker", worker);
+
+    ClientCbs client_display_cbs = { NULL, };
+    client_display_cbs.connect = handle_dev_display_connect;
+    client_display_cbs.disconnect = handle_dev_display_disconnect;
+    client_display_cbs.migrate = handle_dev_display_migrate;
+    red_channel_register_client_cbs(channel, &client_display_cbs);
 
     return worker;
 }
diff --git a/server/red-worker.h b/server/red-worker.h
index 767329da..3d2841ba 100644
--- a/server/red-worker.h
+++ b/server/red-worker.h
@@ -28,9 +28,7 @@
 
 typedef struct RedWorker RedWorker;
 
-RedWorker* red_worker_new(QXLInstance *qxl,
-                          const ClientCbs *client_cursor_cbs,
-                          const ClientCbs *client_display_cbs);
+RedWorker* red_worker_new(QXLInstance *qxl);
 bool       red_worker_run(RedWorker *worker);
 void red_worker_free(RedWorker *worker);
 
@@ -51,14 +49,14 @@ enum {
     RED_WORKER_MESSAGE_OOM,
     RED_WORKER_MESSAGE_READY, /* unused */
 
-    RED_WORKER_MESSAGE_DISPLAY_CONNECT,
-    RED_WORKER_MESSAGE_DISPLAY_DISCONNECT,
-    RED_WORKER_MESSAGE_DISPLAY_MIGRATE,
+    RED_WORKER_MESSAGE_DISPLAY_CONNECT_DEPRECATED,
+    RED_WORKER_MESSAGE_DISPLAY_DISCONNECT_DEPRECATED,
+    RED_WORKER_MESSAGE_DISPLAY_MIGRATE_DEPRECATED,
     RED_WORKER_MESSAGE_START,
     RED_WORKER_MESSAGE_STOP,
-    RED_WORKER_MESSAGE_CURSOR_CONNECT,
-    RED_WORKER_MESSAGE_CURSOR_DISCONNECT,
-    RED_WORKER_MESSAGE_CURSOR_MIGRATE,
+    RED_WORKER_MESSAGE_CURSOR_CONNECT_DEPRECATED,
+    RED_WORKER_MESSAGE_CURSOR_DISCONNECT_DEPRECATED,
+    RED_WORKER_MESSAGE_CURSOR_MIGRATE_DEPRECATED,
     RED_WORKER_MESSAGE_SET_COMPRESSION,
     RED_WORKER_MESSAGE_SET_STREAMING_VIDEO,
     RED_WORKER_MESSAGE_SET_MOUSE_MODE,
@@ -97,36 +95,6 @@ enum {
     RED_WORKER_MESSAGE_COUNT // LAST
 };
 
-typedef struct RedWorkerMessageDisplayConnect {
-    RedClient * client;
-    RedStream * stream;
-    RedChannelCapabilities caps;   // red_worker should reset
-    int migration;
-} RedWorkerMessageDisplayConnect;
-
-typedef struct RedWorkerMessageDisplayDisconnect {
-    RedChannelClient *rcc;
-} RedWorkerMessageDisplayDisconnect;
-
-typedef struct RedWorkerMessageDisplayMigrate {
-    RedChannelClient *rcc;
-} RedWorkerMessageDisplayMigrate;
-
-typedef struct RedWorkerMessageCursorConnect {
-    RedClient *client;
-    RedStream *stream;
-    int migration;
-    RedChannelCapabilities caps;   // red_worker should reset
-} RedWorkerMessageCursorConnect;
-
-typedef struct RedWorkerMessageCursorDisconnect {
-    RedChannelClient *rcc;
-} RedWorkerMessageCursorDisconnect;
-
-typedef struct RedWorkerMessageCursorMigrate {
-    RedChannelClient *rcc;
-} RedWorkerMessageCursorMigrate;
-
 typedef struct RedWorkerMessageUpdate {
     uint32_t surface_id;
     QXLRect * qxl_area;
-- 
2.20.1

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