[Spice-devel] [PATCH 03/11] worker: move surfaces to DisplayChannel

Fabiano FidĂȘncio fidencio at redhat.com
Wed Nov 11 05:11:41 PST 2015


I've made some comments in the original patch:
http://lists.freedesktop.org/archives/spice-devel/2015-November/023472.html

On Wed, Nov 11, 2015 at 1:20 PM, Frediano Ziglio <fziglio at redhat.com> wrote:
> From: Marc-André Lureau <marcandre.lureau at gmail.com>
>
> Ok. this one was painful.Note that in some cases, DCC_TO_DC should be
> made safer (there used to be a if !dcc guard in some places, although
> that looks wrong anyway)...
> ---
>  server/display-channel.c |   79 ++++
>  server/display-channel.h |   37 +-
>  server/red_worker.c      | 1121 ++++++++++++++++++++--------------------------
>  server/red_worker.h      |    2 +
>  4 files changed, 593 insertions(+), 646 deletions(-)
>
> diff --git a/server/display-channel.c b/server/display-channel.c
> index b5d8830..5f422c9 100644
> --- a/server/display-channel.c
> +++ b/server/display-channel.c
> @@ -305,3 +305,82 @@ void display_channel_set_stream_video(DisplayChannel *display, int stream_video)
>
>      display->stream_video = stream_video;
>  }
> +
> +static void stop_streams(DisplayChannel *display)
> +{
> +    Ring *ring = &display->streams;
> +    RingItem *item = ring_get_head(ring);
> +
> +    while (item) {
> +        Stream *stream = SPICE_CONTAINEROF(item, Stream, link);
> +        item = ring_next(ring, item);
> +        if (!stream->current) {
> +            stream_stop(display, stream);
> +        } else {
> +            spice_info("attached stream");
> +        }
> +    }
> +
> +    display->next_item_trace = 0;
> +    memset(display->items_trace, 0, sizeof(display->items_trace));
> +}
> +
> +void display_channel_surface_unref(DisplayChannel *display, uint32_t surface_id)
> +{
> +    RedSurface *surface = &display->surfaces[surface_id];
> +    RedWorker *worker = COMMON_CHANNEL(display)->worker;
> +    QXLInstance *qxl = red_worker_get_qxl(worker);
> +    DisplayChannelClient *dcc;
> +    RingItem *link, *next;
> +
> +    if (--surface->refs != 0) {
> +        return;
> +    }
> +
> +    // only primary surface streams are supported
> +    if (is_primary_surface(display, surface_id)) {
> +        stop_streams(display);
> +    }
> +    spice_assert(surface->context.canvas);
> +
> +    surface->context.canvas->ops->destroy(surface->context.canvas);
> +    if (surface->create.info) {
> +        qxl->st->qif->release_resource(qxl, surface->create);
> +    }
> +    if (surface->destroy.info) {
> +        qxl->st->qif->release_resource(qxl, surface->destroy);
> +    }
> +
> +    region_destroy(&surface->draw_dirty_region);
> +    surface->context.canvas = NULL;
> +    FOREACH_DCC(display, link, next, dcc) {
> +        dcc_push_destroy_surface(dcc, surface_id);
> +    }
> +
> +    spice_warn_if(!ring_is_empty(&surface->depend_on_me));
> +}
> +
> +void display_channel_show_tree(DisplayChannel *display)
> +{
> +    int x;
> +
> +    for (x = 0; x < NUM_SURFACES; ++x) {
> +        if (!display->surfaces[x].context.canvas)
> +            continue;
> +
> +        RingItem *it;
> +        Ring *ring = &display->surfaces[x].current;
> +        RING_FOREACH(it, ring) {
> +            TreeItem *now = SPICE_CONTAINEROF(it, TreeItem, siblings_link);
> +            tree_item_dump(now);
> +        }
> +
> +    }
> +}
> +
> +/* TODO: perhaps rename to "ready" or "realized" ? */
> +bool display_channel_surface_has_canvas(DisplayChannel *display,
> +                                        uint32_t surface_id)
> +{
> +    return display->surfaces[surface_id].context.canvas != NULL;
> +}
> diff --git a/server/display-channel.h b/server/display-channel.h
> index f8a1c27..334dbf7 100644
> --- a/server/display-channel.h
> +++ b/server/display-channel.h
> @@ -204,8 +204,8 @@ struct DisplayChannelClient {
>
>  #define DCC_TO_WORKER(dcc)                                              \
>      (SPICE_CONTAINEROF((dcc)->common.base.channel, CommonChannel, base)->worker)
> -#define DCC_TO_DC(dcc) SPICE_CONTAINEROF((dcc)->common.base.channel,    \
> -                                         DisplayChannel, common.base)
> +#define DCC_TO_DC(dcc)                                                  \
> +     SPICE_CONTAINEROF((dcc)->common.base.channel, DisplayChannel, common.base)
>  #define RCC_TO_DCC(rcc) SPICE_CONTAINEROF((rcc), DisplayChannelClient, common.base)
>
>
> @@ -272,6 +272,30 @@ void                       monitors_config_unref                     (MonitorsCo
>  #define NUM_TRACE_ITEMS (1 << TRACE_ITEMS_SHIFT)
>  #define ITEMS_TRACE_MASK (NUM_TRACE_ITEMS - 1)
>
> +typedef struct DrawContext {
> +    SpiceCanvas *canvas;
> +    int canvas_draws_on_surface;
> +    int top_down;
> +    uint32_t width;
> +    uint32_t height;
> +    int32_t stride;
> +    uint32_t format;
> +    void *line_0;
> +} DrawContext;
> +
> +typedef struct RedSurface {
> +    uint32_t refs;
> +    Ring current;
> +    Ring current_list;
> +    DrawContext context;
> +
> +    Ring depend_on_me;
> +    QRegion draw_dirty_region;
> +
> +    //fix me - better handling here
> +    QXLReleaseInfoExt create, destroy;
> +} RedSurface;
> +
>  #define NUM_DRAWABLES 1000
>  typedef struct _Drawable _Drawable;
>  struct _Drawable {
> @@ -310,6 +334,10 @@ struct DisplayChannel {
>      uint32_t next_item_trace;
>      uint64_t streams_size_total;
>
> +    RedSurface surfaces[NUM_SURFACES];
> +    uint32_t n_surfaces;
> +    SpiceImageSurfaces image_surfaces;
> +
>      ImageCache image_cache;
>      RedCompressBuf *free_compress_bufs;
>
> @@ -363,6 +391,11 @@ int                        display_channel_get_streams_timeout       (DisplayCha
>  void                       display_channel_compress_stats_print      (const DisplayChannel *display);
>  void                       display_channel_compress_stats_reset      (DisplayChannel *display);
>  void                       display_channel_drawable_unref            (DisplayChannel *display, Drawable *drawable);
> +void                       display_channel_surface_unref             (DisplayChannel *display,
> +                                                                      uint32_t surface_id);
> +bool                       display_channel_surface_has_canvas        (DisplayChannel *display,
> +                                                                      uint32_t surface_id);
> +void                       display_channel_show_tree                 (DisplayChannel *display);
>
>  static inline int is_equal_path(SpicePath *path1, SpicePath *path2)
>  {
> diff --git a/server/red_worker.c b/server/red_worker.c
> index 3a33596..3908f97 100644
> --- a/server/red_worker.c
> +++ b/server/red_worker.c
> @@ -111,6 +111,8 @@ static void rendering_incorrect(const char *msg)
>
>  typedef unsigned long stat_time_t;
>
> +static stat_time_t stat_now(RedWorker *worker);
> +
>  #if defined(RED_WORKER_STAT) || defined(COMPRESS_STAT)
>  double stat_cpu_time_to_sec(stat_time_t time)
>  {
> @@ -306,30 +308,6 @@ typedef struct UpgradeItem {
>      SpiceClipRects *rects;
>  } UpgradeItem;
>
> -typedef struct DrawContext {
> -    SpiceCanvas *canvas;
> -    int canvas_draws_on_surface;
> -    int top_down;
> -    uint32_t width;
> -    uint32_t height;
> -    int32_t stride;
> -    uint32_t format;
> -    void *line_0;
> -} DrawContext;
> -
> -typedef struct RedSurface {
> -    uint32_t refs;
> -    Ring current;
> -    Ring current_list;
> -    DrawContext context;
> -
> -    Ring depend_on_me;
> -    QRegion draw_dirty_region;
> -
> -    //fix me - better handling here
> -    QXLReleaseInfoExt create, destroy;
> -} RedSurface;
> -
>  typedef struct RedWorker {
>      pthread_t thread;
>      clockid_t clockid;
> @@ -346,10 +324,6 @@ typedef struct RedWorker {
>      CursorChannel *cursor_channel;
>      uint32_t cursor_poll_tries;
>
> -    RedSurface surfaces[NUM_SURFACES];
> -    uint32_t n_surfaces;
> -    SpiceImageSurfaces image_surfaces;
> -
>      uint32_t red_drawable_count;
>      uint32_t glz_drawable_count;
>      uint32_t bits_unique;
> @@ -410,7 +384,7 @@ typedef struct BitmapData {
>      SpiceRect lossy_rect;
>  } BitmapData;
>
> -static inline int validate_surface(RedWorker *worker, uint32_t surface_id);
> +static inline int validate_surface(DisplayChannel *display, uint32_t surface_id);
>
>  static stat_time_t stat_now(RedWorker *worker)
>  {
> @@ -421,11 +395,11 @@ static stat_time_t stat_now(RedWorker *worker)
>      return ts.tv_nsec + ts.tv_sec * 1000 * 1000 * 1000;
>  }
>
> -static void red_draw_qxl_drawable(RedWorker *worker, Drawable *drawable);
> -static void red_current_flush(RedWorker *worker, int surface_id);
> -static void red_draw_drawable(RedWorker *worker, Drawable *item);
> -static void red_update_area(RedWorker *worker, const SpiceRect *area, int surface_id);
> -static void red_update_area_till(RedWorker *worker, const SpiceRect *area, int surface_id,
> +static void red_draw_qxl_drawable(DisplayChannel *display, Drawable *drawable);
> +static void red_current_flush(DisplayChannel *display, int surface_id);
> +static void red_draw_drawable(DisplayChannel *display, Drawable *item);
> +static void red_update_area(DisplayChannel *display, const SpiceRect *area, int surface_id);
> +static void red_update_area_till(DisplayChannel *display, const SpiceRect *area, int surface_id,
>                                   Drawable *last);
>  static void detach_stream(DisplayChannel *display, Stream *stream, int detach_sized);
>  static inline void display_channel_stream_maintenance(DisplayChannel *display, Drawable *candidate, Drawable *sect);
> @@ -442,6 +416,9 @@ static void display_channel_client_release_item_before_push(DisplayChannelClient
>                                                              PipeItem *item);
>  static void display_channel_client_release_item_after_push(DisplayChannelClient *dcc,
>                                                             PipeItem *item);
> +static void red_create_surface(DisplayChannel *display, uint32_t surface_id, uint32_t width,
> +                               uint32_t height, int32_t stride, uint32_t format,
> +                               void *line_0, int data_is_valid, int send_client);
>
>  #define LINK_TO_DPI(ptr) SPICE_CONTAINEROF((ptr), DrawablePipeItem, base)
>  #define DRAWABLE_FOREACH_DPI_SAFE(drawable, link, next, dpi)          \
> @@ -577,8 +554,8 @@ static int validate_drawable_bbox(RedWorker *worker, RedDrawable *drawable)
>          /* surface_id must be validated before calling into
>           * validate_drawable_bbox
>           */
> -        VALIDATE_SURFACE_RETVAL(worker, surface_id, FALSE);
> -        context = &worker->surfaces[surface_id].context;
> +        VALIDATE_SURFACE_RETVAL(worker->display_channel, surface_id, FALSE);
> +        context = &worker->display_channel->surfaces[surface_id].context;
>
>          if (drawable->bbox.top < 0)
>                  return FALSE;
> @@ -596,15 +573,15 @@ static int validate_drawable_bbox(RedWorker *worker, RedDrawable *drawable)
>          return TRUE;
>  }
>
> -static inline int validate_surface(RedWorker *worker, uint32_t surface_id)
> +static inline int validate_surface(DisplayChannel *display, uint32_t surface_id)
>  {
> -    if SPICE_UNLIKELY(surface_id >= worker->n_surfaces) {
> +    if SPICE_UNLIKELY(surface_id >= display->n_surfaces) {
>          spice_warning("invalid surface_id %u", surface_id);
>          return 0;
>      }
> -    if (!worker->surfaces[surface_id].context.canvas) {
> +    if (!display->surfaces[surface_id].context.canvas) {
>          spice_warning("canvas address is %p for %d (and is NULL)\n",
> -                   &(worker->surfaces[surface_id].context.canvas), surface_id);
> +                   &(display->surfaces[surface_id].context.canvas), surface_id);
>          spice_warning("failed on %d", surface_id);
>          return 0;
>      }
> @@ -617,7 +594,7 @@ static void red_push_surface_image(DisplayChannelClient *dcc, int surface_id);
>  static inline void red_handle_drawable_surfaces_client_synced(
>                          DisplayChannelClient *dcc, Drawable *drawable)
>  {
> -    RedWorker *worker = DCC_TO_WORKER(dcc);
> +    DisplayChannel *display = DCC_TO_DC(dcc);
>      int x;
>
>      for (x = 0; x < 3; ++x) {
> @@ -629,7 +606,7 @@ static inline void red_handle_drawable_surfaces_client_synced(
>                  continue;
>              }
>              red_create_surface_item(dcc, surface_id);
> -            red_current_flush(worker, surface_id);
> +            red_current_flush(display, surface_id);
>              red_push_surface_image(dcc, surface_id);
>          }
>      }
> @@ -639,7 +616,7 @@ static inline void red_handle_drawable_surfaces_client_synced(
>      }
>
>      red_create_surface_item(dcc, drawable->surface_id);
> -    red_current_flush(worker, drawable->surface_id);
> +    red_current_flush(display, drawable->surface_id);
>      red_push_surface_image(dcc, drawable->surface_id);
>  }
>
> @@ -664,13 +641,13 @@ static void dcc_add_drawable(DisplayChannelClient *dcc, Drawable *drawable)
>      red_channel_client_pipe_add(RED_CHANNEL_CLIENT(dcc), &dpi->dpi_pipe_item);
>  }
>
> -static void red_pipes_add_drawable(RedWorker *worker, Drawable *drawable)
> +static void red_pipes_add_drawable(DisplayChannel *display, Drawable *drawable)
>  {
>      DisplayChannelClient *dcc;
>      RingItem *dcc_ring_item, *next;
>
>      spice_warn_if(!ring_is_empty(&drawable->pipes));
> -    FOREACH_DCC(worker->display_channel, dcc_ring_item, next, dcc) {
> +    FOREACH_DCC(display, dcc_ring_item, next, dcc) {
>          dcc_add_drawable(dcc, drawable);
>      }
>  }
> @@ -687,7 +664,7 @@ static void dcc_add_drawable_to_tail(DisplayChannelClient *dcc, Drawable *drawab
>      red_channel_client_pipe_add_tail(RED_CHANNEL_CLIENT(dcc), &dpi->dpi_pipe_item);
>  }
>
> -static inline void red_pipes_add_drawable_after(RedWorker *worker,
> +static inline void red_pipes_add_drawable_after(DisplayChannel *display,
>                                                  Drawable *drawable, Drawable *pos_after)
>  {
>      DrawablePipeItem *dpi, *dpi_pos_after;
> @@ -704,13 +681,13 @@ static inline void red_pipes_add_drawable_after(RedWorker *worker,
>                                            &dpi_pos_after->dpi_pipe_item);
>      }
>      if (num_other_linked == 0) {
> -        red_pipes_add_drawable(worker, drawable);
> +        red_pipes_add_drawable(display, drawable);
>          return;
>      }
> -    if (num_other_linked != worker->display_channel->common.base.clients_num) {
> -        RingItem *worker_item, *next;
> +    if (num_other_linked != display->common.base.clients_num) {
> +        RingItem *item, *next;
>          spice_debug("TODO: not O(n^2)");
> -        FOREACH_DCC(worker->display_channel, worker_item, next, dcc) {
> +        FOREACH_DCC(display, item, next, dcc) {
>              int sent = 0;
>              DRAWABLE_FOREACH_DPI_SAFE(pos_after, dpi_link, dpi_next, dpi_pos_after) {
>                  if (dpi_pos_after->dcc == dcc) {
> @@ -734,8 +711,6 @@ static inline PipeItem *red_pipe_get_tail(DisplayChannelClient *dcc)
>      return (PipeItem*)ring_get_tail(&RED_CHANNEL_CLIENT(dcc)->pipe);
>  }
>
> -static void red_surface_unref(RedWorker *worker, uint32_t surface_id);
> -
>  static inline void red_pipes_remove_drawable(Drawable *drawable)
>  {
>      DrawablePipeItem *dpi;
> @@ -850,59 +825,6 @@ static void drawables_init(DisplayChannel *display)
>  }
>
>
> -static void stop_streams(DisplayChannel *display)
> -{
> -    Ring *ring = &display->streams;
> -    RingItem *item = ring_get_head(ring);
> -
> -    while (item) {
> -        Stream *stream = SPICE_CONTAINEROF(item, Stream, link);
> -        item = ring_next(ring, item);
> -        if (!stream->current) {
> -            stream_stop(display, stream);
> -        } else {
> -            spice_info("attached stream");
> -        }
> -    }
> -
> -    display->next_item_trace = 0;
> -    memset(display->items_trace, 0, sizeof(display->items_trace));
> -}
> -
> -static void red_surface_unref(RedWorker *worker, uint32_t surface_id)
> -{
> -    DisplayChannel *display = worker->display_channel;
> -    RedSurface *surface = &worker->surfaces[surface_id];
> -    DisplayChannelClient *dcc;
> -    RingItem *link, *next;
> -
> -    if (--surface->refs != 0) {
> -        return;
> -    }
> -
> -    // only primary surface streams are supported
> -    if (is_primary_surface(worker->display_channel, surface_id)) {
> -        stop_streams(display);
> -    }
> -    spice_assert(surface->context.canvas);
> -
> -    surface->context.canvas->ops->destroy(surface->context.canvas);
> -    if (surface->create.info) {
> -        worker->qxl->st->qif->release_resource(worker->qxl, surface->create);
> -    }
> -    if (surface->destroy.info) {
> -        worker->qxl->st->qif->release_resource(worker->qxl, surface->destroy);
> -    }
> -
> -    region_destroy(&surface->draw_dirty_region);
> -    surface->context.canvas = NULL;
> -    FOREACH_DCC(worker->display_channel, link, next, dcc) {
> -        dcc_push_destroy_surface(dcc, surface_id);
> -    }
> -
> -    spice_warn_if(!ring_is_empty(&surface->depend_on_me));
> -}
> -
>  static inline void set_surface_release_info(QXLReleaseInfoExt *release_info_ext,
>                                              QXLReleaseInfo *release_info, uint32_t group_id)
>  {
> @@ -951,7 +873,7 @@ static void drawable_unref_surface_deps(DisplayChannel *display, Drawable *drawa
>          if (surface_id == -1) {
>              continue;
>          }
> -        red_surface_unref(COMMON_CHANNEL(display)->worker, surface_id);
> +        display_channel_surface_unref(display, surface_id);
>      }
>  }
>
> @@ -985,7 +907,7 @@ void display_channel_drawable_unref(DisplayChannel *display, Drawable *drawable)
>
>      drawable_remove_dependencies(display, drawable);
>      drawable_unref_surface_deps(display, drawable);
> -    red_surface_unref(COMMON_CHANNEL(display)->worker, drawable->surface_id);
> +    display_channel_surface_unref(display, drawable->surface_id);
>
>      RING_FOREACH_SAFE(item, next, &drawable->glz_ring) {
>          SPICE_CONTAINEROF(item, RedGlzDrawable, drawable_link)->drawable = NULL;
> @@ -1011,7 +933,7 @@ static inline void remove_shadow(DrawItem *item)
>      free(shadow);
>  }
>
> -static inline void current_remove_container(RedWorker *worker, Container *container)
> +static inline void current_remove_container(DisplayChannel *display, Container *container)
>  {
>      spice_assert(ring_is_empty(&container->items));
>      ring_remove(&container->base.siblings_link);
> @@ -1019,7 +941,7 @@ static inline void current_remove_container(RedWorker *worker, Container *contai
>      free(container);
>  }
>
> -static inline void container_cleanup(RedWorker *worker, Container *container)
> +static inline void container_cleanup(DisplayChannel *display, Container *container)
>  {
>      while (container && container->items.next == container->items.prev) {
>          Container *next = container->base.container;
> @@ -1030,7 +952,7 @@ static inline void container_cleanup(RedWorker *worker, Container *container)
>              ring_add_after(&item->siblings_link, &container->base.siblings_link);
>              item->container = container->base.container;
>          }
> -        current_remove_container(worker, container);
> +        current_remove_container(display, container);
>          container = next;
>      }
>  }
> @@ -1054,12 +976,12 @@ static void display_stream_trace_add_drawable(DisplayChannel *display, Drawable
>      trace->dest_area = item->red_drawable->bbox;
>  }
>
> -static void surface_flush(RedWorker *worker, int surface_id, SpiceRect *rect)
> +static void surface_flush(DisplayChannel *display, int surface_id, SpiceRect *rect)
>  {
> -    red_update_area(worker, rect, surface_id);
> +    red_update_area(display, rect, surface_id);
>  }
>
> -static void red_flush_source_surfaces(RedWorker *worker, Drawable *drawable)
> +static void red_flush_source_surfaces(DisplayChannel *display, Drawable *drawable)
>  {
>      int x;
>      int surface_id;
> @@ -1068,15 +990,13 @@ static void red_flush_source_surfaces(RedWorker *worker, Drawable *drawable)
>          surface_id = drawable->surface_deps[x];
>          if (surface_id != -1 && drawable->depend_items[x].drawable) {
>              remove_depended_item(&drawable->depend_items[x]);
> -            surface_flush(worker, surface_id, &drawable->red_drawable->surfaces_rects[x]);
> +            surface_flush(display, surface_id, &drawable->red_drawable->surfaces_rects[x]);
>          }
>      }
>  }
>
> -static inline void current_remove_drawable(RedWorker *worker, Drawable *item)
> +static inline void current_remove_drawable(DisplayChannel *display, Drawable *item)
>  {
> -    DisplayChannel *display = worker->display_channel;
> -
>      display_stream_trace_add_drawable(display, item);
>      remove_shadow(&item->tree_item);
>      ring_remove(&item->tree_item.base.siblings_link);
> @@ -1086,23 +1006,24 @@ static inline void current_remove_drawable(RedWorker *worker, Drawable *item)
>      display->current_size--;
>  }
>
> -static void remove_drawable(RedWorker *worker, Drawable *drawable)
> +static void remove_drawable(DisplayChannel *display, Drawable *drawable)
>  {
>      red_pipes_remove_drawable(drawable);
> -    current_remove_drawable(worker, drawable);
> +    current_remove_drawable(display, drawable);
>  }
>
> -static inline void current_remove(RedWorker *worker, TreeItem *item)
> +static inline void current_remove(DisplayChannel *display, TreeItem *item)
>  {
>      TreeItem *now = item;
>
> +    /* depth-first tree traversal, todo: do a to tree_foreach()? */
>      for (;;) {
>          Container *container = now->container;
>          RingItem *ring_item;
>
>          if (now->type == TREE_ITEM_TYPE_DRAWABLE) {
>              ring_item = now->siblings_link.prev;
> -            remove_drawable(worker, SPICE_CONTAINEROF(now, Drawable, tree_item));
> +            remove_drawable(display, SPICE_CONTAINEROF(now, Drawable, tree_item));
>          } else {
>              Container *container = (Container *)now;
>
> @@ -1113,7 +1034,7 @@ static inline void current_remove(RedWorker *worker, TreeItem *item)
>                  continue;
>              }
>              ring_item = now->siblings_link.prev;
> -            current_remove_container(worker, container);
> +            current_remove_container(display, container);
>          }
>          if (now == item) {
>              return;
> @@ -1127,13 +1048,14 @@ static inline void current_remove(RedWorker *worker, TreeItem *item)
>      }
>  }
>
> -static void red_current_clear(RedWorker *worker, int surface_id)
> +static void current_clear(DisplayChannel *display, int surface_id)
>  {
> +    Ring *ring = &display->surfaces[surface_id].current;
>      RingItem *ring_item;
>
> -    while ((ring_item = ring_get_head(&worker->surfaces[surface_id].current))) {
> +    while ((ring_item = ring_get_head(ring))) {
>          TreeItem *now = SPICE_CONTAINEROF(ring_item, TreeItem, siblings_link);
> -        current_remove(worker, now);
> +        current_remove(display, now);
>      }
>  }
>
> @@ -1218,14 +1140,14 @@ static int red_clear_surface_drawables_from_pipe(DisplayChannelClient *dcc, int
>      return TRUE;
>  }
>
> -static void red_clear_surface_drawables_from_pipes(RedWorker *worker,
> +static void red_clear_surface_drawables_from_pipes(DisplayChannel *display,
>                                                     int surface_id,
>                                                     int wait_if_used)
>  {
>      RingItem *item, *next;
>      DisplayChannelClient *dcc;
>
> -    FOREACH_DCC(worker->display_channel, item, next, dcc) {
> +    FOREACH_DCC(display, item, next, dcc) {
>          if (!red_clear_surface_drawables_from_pipe(dcc, surface_id, wait_if_used)) {
>              red_channel_client_disconnect(RED_CHANNEL_CLIENT(dcc));
>          }
> @@ -1265,8 +1187,8 @@ static inline int __contained_by(TreeItem *item, Ring *ring)
>      return FALSE;
>  }
>
> -static inline void __exclude_region(RedWorker *worker, Ring *ring, TreeItem *item, QRegion *rgn,
> -                                    Ring **top_ring, Drawable *frame_candidate)
> +static void __exclude_region(DisplayChannel *display, Ring *ring, TreeItem *item, QRegion *rgn,
> +                             Ring **top_ring, Drawable *frame_candidate)
>  {
>      QRegion and_rgn;
>  #ifdef RED_WORKER_STAT
> @@ -1305,7 +1227,7 @@ static inline void __exclude_region(RedWorker *worker, Ring *ring, TreeItem *ite
>              } else {
>                  if (frame_candidate) {
>                      Drawable *drawable = SPICE_CONTAINEROF(draw, Drawable, tree_item);
> -                    display_channel_stream_maintenance(worker->display_channel, frame_candidate, drawable);
> +                    display_channel_stream_maintenance(display, frame_candidate, drawable);
>                  }
>                  region_exclude(&draw->base.rgn, &and_rgn);
>              }
> @@ -1336,8 +1258,8 @@ static inline void __exclude_region(RedWorker *worker, Ring *ring, TreeItem *ite
>      stat_add(&worker->__exclude_stat, start_time);
>  }
>
> -static void exclude_region(RedWorker *worker, Ring *ring, RingItem *ring_item, QRegion *rgn,
> -                           TreeItem **last, Drawable *frame_candidate)
> +static void exclude_region(DisplayChannel *display, Ring *ring, RingItem *ring_item,
> +                           QRegion *rgn, TreeItem **last, Drawable *frame_candidate)
>  {
>  #ifdef RED_WORKER_STAT
>      stat_time_t start_time = stat_now(worker);
> @@ -1357,12 +1279,12 @@ static void exclude_region(RedWorker *worker, Ring *ring, RingItem *ring_item, Q
>          spice_assert(!region_is_empty(&now->rgn));
>
>          if (region_intersects(rgn, &now->rgn)) {
> -            __exclude_region(worker, ring, now, rgn, &top_ring, frame_candidate);
> +            __exclude_region(display, ring, now, rgn, &top_ring, frame_candidate);
>
>              if (region_is_empty(&now->rgn)) {
>                  spice_assert(now->type != TREE_ITEM_TYPE_SHADOW);
>                  ring_item = now->siblings_link.prev;
> -                current_remove(worker, now);
> +                current_remove(display, now);
>                  if (last && *last == now) {
>                      *last = (TreeItem *)ring_next(ring, ring_item);
>                  }
> @@ -1395,13 +1317,13 @@ static void exclude_region(RedWorker *worker, Ring *ring, RingItem *ring_item, Q
>      }
>  }
>
> -static inline void __current_add_drawable(RedWorker *worker, Drawable *drawable, RingItem *pos)
> +static void __current_add_drawable(DisplayChannel *display,
> +                                   Drawable *drawable, RingItem *pos)
>  {
> -    DisplayChannel *display = worker->display_channel;
>      RedSurface *surface;
>      uint32_t surface_id = drawable->surface_id;
>
> -    surface = &worker->surfaces[surface_id];
> +    surface = &display->surfaces[surface_id];
>      ring_add_after(&drawable->tree_item.base.siblings_link, pos);
>      ring_add(&display->current_list, &drawable->list_link);
>      ring_add(&surface->current_list, &drawable->surface_list_link);
> @@ -1497,9 +1419,9 @@ static void dcc_detach_stream_gracefully(DisplayChannelClient *dcc,
>                      stream_id, stream->current != NULL);
>          rect_debug(&upgrade_area);
>          if (update_area_limit) {
> -            red_update_area_till(DCC_TO_WORKER(dcc), &upgrade_area, 0, update_area_limit);
> +            red_update_area_till(DCC_TO_DC(dcc), &upgrade_area, 0, update_area_limit);
>          } else {
> -            red_update_area(DCC_TO_WORKER(dcc), &upgrade_area, 0);
> +            red_update_area(DCC_TO_DC(dcc), &upgrade_area, 0);
>          }
>          red_add_surface_area_image(dcc, 0, &upgrade_area, NULL, FALSE);
>      }
> @@ -2155,9 +2077,8 @@ static inline int is_drawable_independent_from_surfaces(Drawable *drawable)
>      return TRUE;
>  }
>
> -static inline int red_current_add_equal(RedWorker *worker, DrawItem *item, TreeItem *other)
> +static inline int red_current_add_equal(DisplayChannel *display, DrawItem *item, TreeItem *other)
>  {
> -    DisplayChannel *display  = worker->display_channel;
>      DrawItem *other_draw_item;
>      Drawable *drawable;
>      Drawable *other_drawable;
> @@ -2177,14 +2098,14 @@ static inline int red_current_add_equal(RedWorker *worker, DrawItem *item, TreeI
>      if (item->effect == QXL_EFFECT_OPAQUE) {
>          int add_after = !!other_drawable->stream &&
>                          is_drawable_independent_from_surfaces(drawable);
> -        display_channel_stream_maintenance(worker->display_channel, drawable, other_drawable);
> -        __current_add_drawable(worker, drawable, &other->siblings_link);
> +        display_channel_stream_maintenance(display, drawable, other_drawable);
> +        __current_add_drawable(display, drawable, &other->siblings_link);
>          other_drawable->refs++;
> -        current_remove_drawable(worker, other_drawable);
> +        current_remove_drawable(display, other_drawable);
>          if (add_after) {
> -            red_pipes_add_drawable_after(worker, drawable, other_drawable);
> +            red_pipes_add_drawable_after(display, drawable, other_drawable);
>          } else {
> -            red_pipes_add_drawable(worker, drawable);
> +            red_pipes_add_drawable(display, drawable);
>          }
>          red_pipes_remove_drawable(other_drawable);
>          display_channel_drawable_unref(display, other_drawable);
> @@ -2200,11 +2121,11 @@ static inline int red_current_add_equal(RedWorker *worker, DrawItem *item, TreeI
>              RingItem *worker_ring_item, *dpi_ring_item;
>
>              other_drawable->refs++;
> -            current_remove_drawable(worker, other_drawable);
> +            current_remove_drawable(display, other_drawable);
>
>              /* sending the drawable to clients that already received
>               * (or will receive) other_drawable */
> -            worker_ring_item = ring_get_head(&RED_CHANNEL(worker->display_channel)->clients);
> +            worker_ring_item = ring_get_head(&RED_CHANNEL(display)->clients);
>              dpi_ring_item = ring_get_head(&other_drawable->pipes);
>              /* dpi contains a sublist of dcc's, ordered the same */
>              while (worker_ring_item) {
> @@ -2213,7 +2134,7 @@ static inline int red_current_add_equal(RedWorker *worker, DrawItem *item, TreeI
>                  dpi = SPICE_CONTAINEROF(dpi_ring_item, DrawablePipeItem, base);
>                  while (worker_ring_item && (!dpi || dcc != dpi->dcc)) {
>                      dcc_add_drawable(dcc, drawable);
> -                    worker_ring_item = ring_next(&RED_CHANNEL(worker->display_channel)->clients,
> +                    worker_ring_item = ring_next(&RED_CHANNEL(display)->clients,
>                                                   worker_ring_item);
>                      dcc = SPICE_CONTAINEROF(worker_ring_item, DisplayChannelClient,
>                                              common.base.channel_link);
> @@ -2223,7 +2144,7 @@ static inline int red_current_add_equal(RedWorker *worker, DrawItem *item, TreeI
>                      dpi_ring_item = ring_next(&other_drawable->pipes, dpi_ring_item);
>                  }
>                  if (worker_ring_item) {
> -                    worker_ring_item = ring_next(&RED_CHANNEL(worker->display_channel)->clients,
> +                    worker_ring_item = ring_next(&RED_CHANNEL(display)->clients,
>                                                   worker_ring_item);
>                  }
>              }
> @@ -2236,9 +2157,9 @@ static inline int red_current_add_equal(RedWorker *worker, DrawItem *item, TreeI
>          break;
>      case QXL_EFFECT_OPAQUE_BRUSH:
>          if (is_same_geometry(drawable, other_drawable)) {
> -            __current_add_drawable(worker, drawable, &other->siblings_link);
> -            remove_drawable(worker, other_drawable);
> -            red_pipes_add_drawable(worker, drawable);
> +            __current_add_drawable(display, drawable, &other->siblings_link);
> +            remove_drawable(display, other_drawable);
> +            red_pipes_add_drawable(display, drawable);
>              return TRUE;
>          }
>          break;
> @@ -2306,7 +2227,7 @@ static void red_use_stream_trace(DisplayChannel *display, Drawable *drawable)
>      }
>  }
>
> -static inline int red_current_add(RedWorker *worker, Ring *ring, Drawable *drawable)
> +static inline int red_current_add(DisplayChannel *display, Ring *ring, Drawable *drawable)
>  {
>      DrawItem *item = &drawable->tree_item;
>  #ifdef RED_WORKER_STAT
> @@ -2335,7 +2256,7 @@ static inline int red_current_add(RedWorker *worker, Ring *ring, Drawable *drawa
>          } else if (sibling->type != TREE_ITEM_TYPE_SHADOW) {
>              if (!(test_res & REGION_TEST_RIGHT_EXCLUSIVE) &&
>                                                     !(test_res & REGION_TEST_LEFT_EXCLUSIVE) &&
> -                                                   red_current_add_equal(worker, item, sibling)) {
> +                                                   red_current_add_equal(display, item, sibling)) {
>                  stat_add(&worker->add_stat, start_time);
>                  return FALSE;
>              }
> @@ -2347,7 +2268,7 @@ static inline int red_current_add(RedWorker *worker, Ring *ring, Drawable *drawa
>                  if ((shadow = __find_shadow(sibling))) {
>                      if (exclude_base) {
>                          TreeItem *next = sibling;
> -                        exclude_region(worker, ring, exclude_base, &exclude_rgn, &next, NULL);
> +                        exclude_region(display, ring, exclude_base, &exclude_rgn, &next, NULL);
>                          if (next != sibling) {
>                              now = next ? &next->siblings_link : NULL;
>                              exclude_base = NULL;
> @@ -2357,7 +2278,7 @@ static inline int red_current_add(RedWorker *worker, Ring *ring, Drawable *drawa
>                      region_or(&exclude_rgn, &shadow->on_hold);
>                  }
>                  now = now->prev;
> -                current_remove(worker, sibling);
> +                current_remove(display, sibling);
>                  now = ring_next(ring, now);
>                  if (shadow || skip) {
>                      exclude_base = now;
> @@ -2369,7 +2290,7 @@ static inline int red_current_add(RedWorker *worker, Ring *ring, Drawable *drawa
>                  Container *container;
>
>                  if (exclude_base) {
> -                    exclude_region(worker, ring, exclude_base, &exclude_rgn, NULL, NULL);
> +                    exclude_region(display, ring, exclude_base, &exclude_rgn, NULL, NULL);
>                      region_clear(&exclude_rgn);
>                      exclude_base = NULL;
>                  }
> @@ -2400,24 +2321,24 @@ static inline int red_current_add(RedWorker *worker, Ring *ring, Drawable *drawa
>      }
>      if (item->effect == QXL_EFFECT_OPAQUE) {
>          region_or(&exclude_rgn, &item->base.rgn);
> -        exclude_region(worker, ring, exclude_base, &exclude_rgn, NULL, drawable);
> -        red_use_stream_trace(worker->display_channel, drawable);
> -        streams_update_visible_region(worker->display_channel, drawable);
> +        exclude_region(display, ring, exclude_base, &exclude_rgn, NULL, drawable);
> +        red_use_stream_trace(display, drawable);
> +        streams_update_visible_region(display, drawable);
>          /*
>           * Performing the insertion after exclude_region for
>           * safety (todo: Not sure if exclude_region can affect the drawable
>           * if it is added to the tree before calling exclude_region).
>           */
> -        __current_add_drawable(worker, drawable, ring);
> +        __current_add_drawable(display, drawable, ring);
>      } else {
>          /*
>           * red_detach_streams_behind can affect the current tree since it may
>           * trigger calls to update_area. Thus, the drawable should be added to the tree
>           * before calling red_detach_streams_behind
>           */
> -        __current_add_drawable(worker, drawable, ring);
> -        if (is_primary_surface(worker->display_channel, drawable->surface_id)) {
> -            detach_streams_behind(worker->display_channel, &drawable->tree_item.base.rgn, drawable);
> +        __current_add_drawable(display, drawable, ring);
> +        if (is_primary_surface(display, drawable->surface_id)) {
> +            detach_streams_behind(display, &drawable->tree_item.base.rgn, drawable);
>          }
>      }
>      region_destroy(&exclude_rgn);
> @@ -2434,9 +2355,8 @@ static void add_clip_rects(QRegion *rgn, SpiceClipRects *data)
>      }
>  }
>
> -static inline int red_current_add_with_shadow(RedWorker *worker, Ring *ring, Drawable *item)
> +static int red_current_add_with_shadow(DisplayChannel *display, Ring *ring, Drawable *item)
>  {
> -    DisplayChannel *display = worker->display_channel;
>  #ifdef RED_WORKER_STAT
>      stat_time_t start_time = stat_now(worker);
>      ++worker->add_with_shadow_count;
> @@ -2462,11 +2382,11 @@ static inline int red_current_add_with_shadow(RedWorker *worker, Ring *ring, Dra
>      }
>
>      ring_add(ring, &shadow->base.siblings_link);
> -    __current_add_drawable(worker, item, ring);
> +    __current_add_drawable(display, item, ring);
>      if (item->tree_item.effect == QXL_EFFECT_OPAQUE) {
>          QRegion exclude_rgn;
>          region_clone(&exclude_rgn, &item->tree_item.base.rgn);
> -        exclude_region(worker, ring, &shadow->base.siblings_link, &exclude_rgn, NULL, NULL);
> +        exclude_region(display, ring, &shadow->base.siblings_link, &exclude_rgn, NULL, NULL);
>          region_destroy(&exclude_rgn);
>          streams_update_visible_region(display, item);
>      } else {
> @@ -2522,7 +2442,7 @@ static void drawable_update_streamable(DisplayChannel *display, Drawable *drawab
>      drawable->streamable = TRUE;
>  }
>
> -static void red_print_stats(RedWorker *worker)
> +void red_worker_print_stats(RedWorker *worker)
>  {
>  #ifdef RED_WORKER_STAT
>      if ((++worker->add_count % 100) == 0) {
> @@ -2550,33 +2470,32 @@ static void red_print_stats(RedWorker *worker)
>  #endif
>  }
>
> -static int red_add_drawable(RedWorker *worker, Drawable *drawable)
> + static int red_add_drawable(DisplayChannel *display, Drawable *drawable)
>  {
> -    DisplayChannel *display = worker->display_channel;
>      int ret = FALSE, surface_id = drawable->surface_id;
>      RedDrawable *red_drawable = drawable->red_drawable;
> -    Ring *ring = &worker->surfaces[surface_id].current;
> +    Ring *ring = &display->surfaces[surface_id].current;
>
>      if (has_shadow(red_drawable)) {
> -        ret = red_current_add_with_shadow(worker, ring, drawable);
> +        ret = red_current_add_with_shadow(display, ring, drawable);
>      } else {
>          drawable_update_streamable(display, drawable);
> -        ret = red_current_add(worker, ring, drawable);
> +        ret = red_current_add(display, ring, drawable);
>      }
>
> -    red_print_stats(worker);
> +    red_worker_print_stats(COMMON_CHANNEL(display)->worker);
>      return ret;
>  }
>
> -static void red_get_area(RedWorker *worker, int surface_id, const SpiceRect *area, uint8_t *dest,
> -                         int dest_stride, int update)
> +static void red_get_area(DisplayChannel *display, int surface_id, const SpiceRect *area,
> +                         uint8_t *dest, int dest_stride, int update)
>  {
>      SpiceCanvas *canvas;
>      RedSurface *surface;
>
> -    surface = &worker->surfaces[surface_id];
> +    surface = &display->surfaces[surface_id];
>      if (update) {
> -        red_update_area(worker, area, surface_id);
> +        red_update_area(display, area, surface_id);
>      }
>
>      canvas = surface->context.canvas;
> @@ -2628,7 +2547,7 @@ static inline int red_handle_self_bitmap(RedWorker *worker, Drawable *drawable)
>          return TRUE;
>      }
>
> -    surface = &worker->surfaces[drawable->surface_id];
> +    surface = &display->surfaces[drawable->surface_id];
>
>      bpp = SPICE_SURFACE_FMT_DEPTH(surface->context.format) / 8;
>
> @@ -2654,7 +2573,7 @@ static inline int red_handle_self_bitmap(RedWorker *worker, Drawable *drawable)
>      image->u.bitmap.data = spice_chunks_new_linear(dest, height * dest_stride);
>      image->u.bitmap.data->flags |= SPICE_CHUNKS_FLAGS_FREE;
>
> -    red_get_area(worker, drawable->surface_id,
> +    red_get_area(display, drawable->surface_id,
>                   &red_drawable->self_bitmap_area, dest, dest_stride, TRUE);
>
>      /* For 32bit non-primary surfaces we need to keep any non-zero
> @@ -2673,9 +2592,8 @@ static inline int red_handle_self_bitmap(RedWorker *worker, Drawable *drawable)
>      return TRUE;
>  }
>
> -static bool free_one_drawable(RedWorker *worker, int force_glz_free)
> +static bool free_one_drawable(DisplayChannel *display, int force_glz_free)
>  {
> -    DisplayChannel *display = worker->display_channel;
>      RingItem *ring_item = ring_get_tail(&display->current_list);
>      Drawable *drawable;
>      Container *container;
> @@ -2691,12 +2609,11 @@ static bool free_one_drawable(RedWorker *worker, int force_glz_free)
>              red_display_free_glz_drawable(glz->dcc, glz);
>          }
>      }
> -    red_draw_drawable(worker, drawable);
> +    red_draw_drawable(display, drawable);
>      container = drawable->tree_item.base.container;
>
> -    current_remove_drawable(worker, drawable);
> -    container_cleanup(worker, container);
> -
> +    current_remove_drawable(display, drawable);
> +    container_cleanup(display, container);
>      return TRUE;
>  }
>
> @@ -2707,19 +2624,19 @@ static Drawable *get_drawable(RedWorker *worker, uint8_t effect, RedDrawable *re
>      Drawable *drawable;
>      int x;
>
> -    VALIDATE_SURFACE_RETVAL(worker, red_drawable->surface_id, NULL)
> +    VALIDATE_SURFACE_RETVAL(display, red_drawable->surface_id, NULL)
>      if (!validate_drawable_bbox(worker, red_drawable)) {
>          rendering_incorrect(__func__);
>          return NULL;
>      }
>      for (x = 0; x < 3; ++x) {
>          if (red_drawable->surface_deps[x] != -1) {
> -            VALIDATE_SURFACE_RETVAL(worker, red_drawable->surface_deps[x], NULL)
> +            VALIDATE_SURFACE_RETVAL(display, red_drawable->surface_deps[x], NULL)
>          }
>      }
>
>      while (!(drawable = drawable_try_new(display))) {
> -        if (!free_one_drawable(COMMON_CHANNEL(display)->worker, FALSE))
> +        if (!free_one_drawable(display, FALSE))
>              return NULL;
>      }
>
> @@ -2744,24 +2661,24 @@ static Drawable *get_drawable(RedWorker *worker, uint8_t effect, RedDrawable *re
>      return drawable;
>  }
>
> -static inline int red_handle_depends_on_target_surface(RedWorker *worker, uint32_t surface_id)
> +static inline int red_handle_depends_on_target_surface(DisplayChannel *display, uint32_t surface_id)
>  {
>      RedSurface *surface;
>      RingItem *ring_item;
>
> -    surface = &worker->surfaces[surface_id];
> +    surface = &display->surfaces[surface_id];
>
>      while ((ring_item = ring_get_tail(&surface->depend_on_me))) {
>          Drawable *drawable;
>          DependItem *depended_item = SPICE_CONTAINEROF(ring_item, DependItem, ring_item);
>          drawable = depended_item->drawable;
> -        surface_flush(worker, drawable->surface_id, &drawable->red_drawable->bbox);
> +        surface_flush(display, drawable->surface_id, &drawable->red_drawable->bbox);
>      }
>
>      return TRUE;
>  }
>
> -static inline void add_to_surface_dependency(RedWorker *worker, int depend_on_surface_id,
> +static inline void add_to_surface_dependency(DisplayChannel *display, int depend_on_surface_id,
>                                               DependItem *depend_item, Drawable *drawable)
>  {
>      RedSurface *surface;
> @@ -2771,22 +2688,21 @@ static inline void add_to_surface_dependency(RedWorker *worker, int depend_on_su
>          return;
>      }
>
> -    surface = &worker->surfaces[depend_on_surface_id];
> +    surface = &display->surfaces[depend_on_surface_id];
>
>      depend_item->drawable = drawable;
>      ring_add(&surface->depend_on_me, &depend_item->ring_item);
>  }
>
> -static inline int red_handle_surfaces_dependencies(RedWorker *worker, Drawable *drawable)
> +static inline int red_handle_surfaces_dependencies(DisplayChannel *display, Drawable *drawable)
>  {
> -    DisplayChannel *display = worker->display_channel;
>      int x;
>
>      for (x = 0; x < 3; ++x) {
>          // surface self dependency is handled by shadows in "current", or by
>          // handle_self_bitmap
>          if (drawable->surface_deps[x] != drawable->surface_id) {
> -            add_to_surface_dependency(worker, drawable->surface_deps[x],
> +            add_to_surface_dependency(display, drawable->surface_deps[x],
>                                        &drawable->depend_items[x], drawable);
>
>              if (drawable->surface_deps[x] == 0) {
> @@ -2801,7 +2717,7 @@ static inline int red_handle_surfaces_dependencies(RedWorker *worker, Drawable *
>      return TRUE;
>  }
>
> -static inline void red_inc_surfaces_drawable_dependencies(RedWorker *worker, Drawable *drawable)
> +static inline void red_inc_surfaces_drawable_dependencies(DisplayChannel *display, Drawable *drawable)
>  {
>      int x;
>      int surface_id;
> @@ -2812,7 +2728,7 @@ static inline void red_inc_surfaces_drawable_dependencies(RedWorker *worker, Dra
>          if (surface_id == -1) {
>              continue;
>          }
> -        surface = &worker->surfaces[surface_id];
> +        surface = &display->surfaces[surface_id];
>          surface->refs++;
>      }
>  }
> @@ -2831,7 +2747,7 @@ static inline void red_process_draw(RedWorker *worker, RedDrawable *red_drawable
>      red_drawable->mm_time = reds_get_mm_time();
>      surface_id = drawable->surface_id;
>
> -    worker->surfaces[surface_id].refs++;
> +    display->surfaces[surface_id].refs++;
>
>      region_add(&drawable->tree_item.base.rgn, &red_drawable->bbox);
>
> @@ -2843,13 +2759,14 @@ static inline void red_process_draw(RedWorker *worker, RedDrawable *red_drawable
>          region_and(&drawable->tree_item.base.rgn, &rgn);
>          region_destroy(&rgn);
>      }
> +
>      /*
>          surface->refs is affected by a drawable (that is
>          dependent on the surface) as long as the drawable is alive.
>          However, surface->depend_on_me is affected by a drawable only
>          as long as it is in the current tree (hasn't been rendered yet).
>      */
> -    red_inc_surfaces_drawable_dependencies(worker, drawable);
> +    red_inc_surfaces_drawable_dependencies(worker->display_channel, drawable);
>
>      if (region_is_empty(&drawable->tree_item.base.rgn)) {
>          goto cleanup;
> @@ -2859,38 +2776,36 @@ static inline void red_process_draw(RedWorker *worker, RedDrawable *red_drawable
>          goto cleanup;
>      }
>
> -    if (!red_handle_depends_on_target_surface(worker, surface_id)) {
> +    if (!red_handle_depends_on_target_surface(worker->display_channel, surface_id)) {
>          goto cleanup;
>      }
>
> -    if (!red_handle_surfaces_dependencies(worker, drawable)) {
> +    if (!red_handle_surfaces_dependencies(worker->display_channel, drawable)) {
>          goto cleanup;
>      }
>
> -    if (red_add_drawable(worker, drawable)) {
> -        red_pipes_add_drawable(worker, drawable);
> +    if (red_add_drawable(worker->display_channel, drawable)) {
> +        red_pipes_add_drawable(worker->display_channel, drawable);
>      }
>  cleanup:
>      display_channel_drawable_unref(display, drawable);
>  }
>
> -static inline void red_create_surface(RedWorker *worker, uint32_t surface_id,uint32_t width,
> -                                      uint32_t height, int32_t stride, uint32_t format,
> -                                      void *line_0, int data_is_valid, int send_client);
>
>  static inline void red_process_surface(RedWorker *worker, RedSurfaceCmd *surface,
>                                         uint32_t group_id, int loadvm)
>  {
> +    DisplayChannel *display = worker->display_channel;
>      uint32_t surface_id;
>      RedSurface *red_surface;
>      uint8_t *data;
>
>      surface_id = surface->surface_id;
> -    if SPICE_UNLIKELY(surface_id >= worker->n_surfaces) {
> +    if SPICE_UNLIKELY(surface_id >= display->n_surfaces) {
>          goto exit;
>      }
>
> -    red_surface = &worker->surfaces[surface_id];
> +    red_surface = &display->surfaces[surface_id];
>
>      switch (surface->type) {
>      case QXL_SURFACE_CMD_CREATE: {
> @@ -2906,7 +2821,7 @@ static inline void red_process_surface(RedWorker *worker, RedSurfaceCmd *surface
>          if (stride < 0) {
>              data -= (int32_t)(stride * (height - 1));
>          }
> -        red_create_surface(worker, surface_id, surface->u.surface_create.width,
> +        red_create_surface(worker->display_channel, surface_id, surface->u.surface_create.width,
>                             height, stride, surface->u.surface_create.format, data,
>                             reloaded_surface,
>                             // reloaded surfaces will be sent on demand
> @@ -2920,13 +2835,13 @@ static inline void red_process_surface(RedWorker *worker, RedSurfaceCmd *surface
>              break;
>          }
>          set_surface_release_info(&red_surface->destroy, surface->release_info, group_id);
> -        red_handle_depends_on_target_surface(worker, surface_id);
> -        /* note that red_handle_depends_on_target_surface must be called before red_current_clear.
> +        red_handle_depends_on_target_surface(display, surface_id);
> +        /* note that red_handle_depends_on_target_surface must be called before current_clear.
>             otherwise "current" will hold items that other drawables may depend on, and then
>             red_current_clear will remove them from the pipe. */
> -        red_current_clear(worker, surface_id);
> -        red_clear_surface_drawables_from_pipes(worker, surface_id, FALSE);
> -        red_surface_unref(worker, surface_id);
> +        current_clear(display, surface_id);
> +        red_clear_surface_drawables_from_pipes(display, surface_id, FALSE);
> +        display_channel_surface_unref(display, surface_id);
>          break;
>      default:
>              spice_error("unknown surface command");
> @@ -2939,31 +2854,30 @@ exit:
>  static SpiceCanvas *image_surfaces_get(SpiceImageSurfaces *surfaces,
>                                         uint32_t surface_id)
>  {
> -    RedWorker *worker;
> +    DisplayChannel *display;
>
> -    worker = SPICE_CONTAINEROF(surfaces, RedWorker, image_surfaces);
> -    VALIDATE_SURFACE_RETVAL(worker, surface_id, NULL);
> +    display = SPICE_CONTAINEROF(surfaces, DisplayChannel, image_surfaces);
> +    VALIDATE_SURFACE_RETVAL(display, surface_id, NULL);
>
> -    return worker->surfaces[surface_id].context.canvas;
> +    return display->surfaces[surface_id].context.canvas;
>  }
>
> -static void image_surface_init(RedWorker *worker)
> +static void image_surface_init(DisplayChannel *display)
>  {
>      static SpiceImageSurfacesOps image_surfaces_ops = {
>          image_surfaces_get,
>      };
>
> -    worker->image_surfaces.ops = &image_surfaces_ops;
> +    display->image_surfaces.ops = &image_surfaces_ops;
>  }
>
> -static void red_draw_qxl_drawable(RedWorker *worker, Drawable *drawable)
> +static void red_draw_qxl_drawable(DisplayChannel *display, Drawable *drawable)
>  {
> -    DisplayChannel *display = worker->display_channel;
>      RedSurface *surface;
>      SpiceCanvas *canvas;
>      SpiceClip clip = drawable->red_drawable->clip;
>
> -    surface = &worker->surfaces[drawable->surface_id];
> +    surface = &display->surfaces[drawable->surface_id];
>      canvas = surface->context.canvas;
>
>      image_cache_aging(&display->image_cache);
> @@ -3094,17 +3008,17 @@ static void red_draw_qxl_drawable(RedWorker *worker, Drawable *drawable)
>      }
>  }
>
> -static void red_draw_drawable(RedWorker *worker, Drawable *drawable)
> +static void red_draw_drawable(DisplayChannel *display, Drawable *drawable)
>  {
> -    red_flush_source_surfaces(worker, drawable);
> -    red_draw_qxl_drawable(worker, drawable);
> +    red_flush_source_surfaces(display, drawable);
> +    red_draw_qxl_drawable(display, drawable);
>  }
>
> -static void validate_area(RedWorker *worker, const SpiceRect *area, uint32_t surface_id)
> +static void validate_area(DisplayChannel *display, const SpiceRect *area, uint32_t surface_id)
>  {
>      RedSurface *surface;
>
> -    surface = &worker->surfaces[surface_id];
> +    surface = &display->surfaces[surface_id];
>      if (!surface->context.canvas_draws_on_surface) {
>          SpiceCanvas *canvas = surface->context.canvas;
>          int h;
> @@ -3126,10 +3040,9 @@ static void validate_area(RedWorker *worker, const SpiceRect *area, uint32_t sur
>      Renders drawables for updating the requested area, but only drawables that are older
>      than 'last' (exclusive).
>  */
> -static void red_update_area_till(RedWorker *worker, const SpiceRect *area, int surface_id,
> +static void red_update_area_till(DisplayChannel *display, const SpiceRect *area, int surface_id,
>                                   Drawable *last)
>  {
> -    DisplayChannel *display = worker->display_channel;
>      RedSurface *surface;
>      Drawable *surface_last = NULL;
>      Ring *ring;
> @@ -3140,7 +3053,7 @@ static void red_update_area_till(RedWorker *worker, const SpiceRect *area, int s
>      spice_assert(last);
>      spice_assert(ring_item_is_linked(&last->list_link));
>
> -    surface = &worker->surfaces[surface_id];
> +    surface = &display->surfaces[surface_id];
>
>      if (surface_id != last->surface_id) {
>          // find the nearest older drawable from the appropriate surface
> @@ -3192,22 +3105,21 @@ static void red_update_area_till(RedWorker *worker, const SpiceRect *area, int s
>          now = SPICE_CONTAINEROF(ring_item, Drawable, surface_list_link);
>          now->refs++;
>          container = now->tree_item.base.container;
> -        current_remove_drawable(worker, now);
> -        container_cleanup(worker, container);
> +        current_remove_drawable(display, now);
> +        container_cleanup(display, container);
>          /* red_draw_drawable may call red_update_area for the surfaces 'now' depends on. Notice,
>             that it is valid to call red_update_area in this case and not red_update_area_till:
>             It is impossible that there was newer item then 'last' in one of the surfaces
>             that red_update_area is called for, Otherwise, 'now' would have already been rendered.
>             See the call for red_handle_depends_on_target_surface in red_process_draw */
> -        red_draw_drawable(worker, now);
> +        red_draw_drawable(display, now);
>          display_channel_drawable_unref(display, now);
>      } while (now != surface_last);
> -    validate_area(worker, area, surface_id);
> +    validate_area(display, area, surface_id);
>  }
>
> -static void red_update_area(RedWorker *worker, const SpiceRect *area, int surface_id)
> +static void red_update_area(DisplayChannel *display, const SpiceRect *area, int surface_id)
>  {
> -    DisplayChannel *display = worker->display_channel;
>      RedSurface *surface;
>      Ring *ring;
>      RingItem *ring_item;
> @@ -3222,7 +3134,7 @@ static void red_update_area(RedWorker *worker, const SpiceRect *area, int surfac
>      spice_return_if_fail(area->left >= 0 && area->top >= 0 &&
>                           area->left < area->right && area->top < area->bottom);
>
> -    surface = &worker->surfaces[surface_id];
> +    surface = &display->surfaces[surface_id];
>
>      last = NULL;
>      ring = &surface->current_list;
> @@ -3240,7 +3152,7 @@ static void red_update_area(RedWorker *worker, const SpiceRect *area, int surfac
>      region_destroy(&rgn);
>
>      if (!last) {
> -        validate_area(worker, area, surface_id);
> +        validate_area(display, area, surface_id);
>          return;
>      }
>
> @@ -3251,12 +3163,12 @@ static void red_update_area(RedWorker *worker, const SpiceRect *area, int surfac
>          now = SPICE_CONTAINEROF(ring_item, Drawable, surface_list_link);
>          now->refs++;
>          container = now->tree_item.base.container;
> -        current_remove_drawable(worker, now);
> -        container_cleanup(worker, container);
> -        red_draw_drawable(worker, now);
> +        current_remove_drawable(display, now);
> +        container_cleanup(display, container);
> +        red_draw_drawable(display, now);
>          display_channel_drawable_unref(display, now);
>      } while (now != last);
> -    validate_area(worker, area, surface_id);
> +    validate_area(display, area, surface_id);
>  }
>
>  static int red_process_cursor(RedWorker *worker, uint32_t max_pipe_size, int *ring_is_empty)
> @@ -3375,11 +3287,11 @@ static int red_process_commands(RedWorker *worker, uint32_t max_pipe_size, int *
>                                     &update, ext_cmd.cmd.data)) {
>                  break;
>              }
> -            if (!validate_surface(worker, update.surface_id)) {
> +            if (!validate_surface(worker->display_channel, update.surface_id)) {
>                  rendering_incorrect("QXL_CMD_UPDATE");
>                  break;
>              }
> -            red_update_area(worker, &update.area, update.surface_id);
> +            red_update_area(worker->display_channel, &update.area, update.surface_id);
>              worker->qxl->st->qif->notify_update(worker->qxl, update.update_id);
>              release_info_ext.group_id = ext_cmd.group_id;
>              release_info_ext.info = update.release_info;
> @@ -3453,7 +3365,7 @@ static void red_free_some(RedWorker *worker)
>      }
>
>      while (!ring_is_empty(&display->current_list) && n++ < RED_RELEASE_BUNCH_SIZE) {
> -        free_one_drawable(worker, TRUE);
> +        free_one_drawable(display, TRUE);
>      }
>
>      FOREACH_DCC(worker->display_channel, item, next, dcc) {
> @@ -3465,12 +3377,12 @@ static void red_free_some(RedWorker *worker)
>      }
>  }
>
> -static void red_current_flush(RedWorker *worker, int surface_id)
> +static void red_current_flush(DisplayChannel *display, int surface_id)
>  {
> -    while (!ring_is_empty(&worker->surfaces[surface_id].current_list)) {
> -        free_one_drawable(worker, FALSE);
> +    while (!ring_is_empty(&display->surfaces[surface_id].current_list)) {
> +        free_one_drawable(display, FALSE);
>      }
> -    red_current_clear(worker, surface_id);
> +    current_clear(display, surface_id);
>  }
>
>  // adding the pipe item after pos. If pos == NULL, adding to head.
> @@ -3479,8 +3391,7 @@ static ImageItem *red_add_surface_area_image(DisplayChannelClient *dcc, int surf
>  {
>      DisplayChannel *display = DCC_TO_DC(dcc);
>      RedChannel *channel = RED_CHANNEL(display);
> -    RedWorker *worker = DCC_TO_WORKER(dcc);
> -    RedSurface *surface = &worker->surfaces[surface_id];
> +    RedSurface *surface = &display->surfaces[surface_id];
>      SpiceCanvas *canvas = surface->context.canvas;
>      ImageItem *item;
>      int stride;
> @@ -3540,15 +3451,11 @@ static ImageItem *red_add_surface_area_image(DisplayChannelClient *dcc, int surf
>
>  static void red_push_surface_image(DisplayChannelClient *dcc, int surface_id)
>  {
> +    DisplayChannel *display = DCC_TO_DC(dcc);
>      SpiceRect area;
>      RedSurface *surface;
> -    RedWorker *worker;
>
> -    if (!dcc) {
> -        return;
> -    }
> -    worker = DCC_TO_WORKER(dcc);
> -    surface = &worker->surfaces[surface_id];
> +    surface = &display->surfaces[surface_id];
>      if (!surface->context.canvas) {
>          return;
>      }
> @@ -4975,8 +4882,7 @@ static FillBitsType fill_bits(DisplayChannelClient *dcc, SpiceMarshaller *m,
>                                SpiceImage *simage, Drawable *drawable, int can_lossy)
>  {
>      RedChannelClient *rcc = RED_CHANNEL_CLIENT(dcc);
> -    DisplayChannel *display_channel = SPICE_CONTAINEROF(rcc->channel, DisplayChannel, common.base);
> -    RedWorker *worker = DCC_TO_WORKER(dcc);
> +    DisplayChannel *display = DCC_TO_DC(dcc);
>      SpiceImage image;
>      compress_send_data_t comp_send_data = {0};
>      SpiceMarshaller *bitmap_palette_out, *lzplt_palette_out;
> @@ -4999,7 +4905,7 @@ static FillBitsType fill_bits(DisplayChannelClient *dcc, SpiceMarshaller *m,
>              dcc->send_data.pixmap_cache_items[dcc->send_data.num_pixmap_cache_items++] =
>                                                                                 image.descriptor.id;
>              if (can_lossy || !lossy_cache_item) {
> -                if (!display_channel->enable_jpeg || lossy_cache_item) {
> +                if (!display->enable_jpeg || lossy_cache_item) {
>                      image.descriptor.type = SPICE_IMAGE_TYPE_FROM_CACHE;
>                  } else {
>                      // making sure, in multiple monitor scenario, that lossy items that
> @@ -5011,7 +4917,7 @@ static FillBitsType fill_bits(DisplayChannelClient *dcc, SpiceMarshaller *m,
>                                       &bitmap_palette_out, &lzplt_palette_out);
>                  spice_assert(bitmap_palette_out == NULL);
>                  spice_assert(lzplt_palette_out == NULL);
> -                stat_inc_counter(display_channel->cache_hits_counter, 1);
> +                stat_inc_counter(display->cache_hits_counter, 1);
>                  pthread_mutex_unlock(&dcc->pixmap_cache->lock);
>                  return FILL_BITS_TYPE_CACHE;
>              } else {
> @@ -5028,13 +4934,13 @@ static FillBitsType fill_bits(DisplayChannelClient *dcc, SpiceMarshaller *m,
>          RedSurface *surface;
>
>          surface_id = simage->u.surface.surface_id;
> -        if (!validate_surface(worker, surface_id)) {
> +        if (!validate_surface(display, surface_id)) {
>              rendering_incorrect("SPICE_IMAGE_TYPE_SURFACE");
>              pthread_mutex_unlock(&dcc->pixmap_cache->lock);
>              return FILL_BITS_TYPE_SURFACE;
>          }
>
> -        surface = &worker->surfaces[surface_id];
> +        surface = &display->surfaces[surface_id];
>          image.descriptor.type = SPICE_IMAGE_TYPE_SURFACE;
>          image.descriptor.flags = 0;
>          image.descriptor.width = surface->context.width;
> @@ -5121,16 +5027,16 @@ static FillBitsType fill_bits(DisplayChannelClient *dcc, SpiceMarshaller *m,
>  static void fill_mask(RedChannelClient *rcc, SpiceMarshaller *m,
>                        SpiceImage *mask_bitmap, Drawable *drawable)
>  {
> -    DisplayChannel *display_channel = SPICE_CONTAINEROF(rcc->channel, DisplayChannel, common.base);
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> +    DisplayChannel *display = DCC_TO_DC(dcc);
>
>      if (mask_bitmap && m) {
> -        if (display_channel->common.worker->image_compression != SPICE_IMAGE_COMPRESSION_OFF) {
> +        if (display->common.worker->image_compression != SPICE_IMAGE_COMPRESSION_OFF) {
>              SpiceImageCompression save_img_comp =
> -                display_channel->common.worker->image_compression;
> -            display_channel->common.worker->image_compression = SPICE_IMAGE_COMPRESSION_OFF;
> +                display->common.worker->image_compression;
> +            display->common.worker->image_compression = SPICE_IMAGE_COMPRESSION_OFF;
>              fill_bits(dcc, m, mask_bitmap, drawable, FALSE);
> -            display_channel->common.worker->image_compression = save_img_comp;
> +            display->common.worker->image_compression = save_img_comp;
>          } else {
>              fill_bits(dcc, m, mask_bitmap, drawable, FALSE);
>          }
> @@ -5163,10 +5069,10 @@ static int is_surface_area_lossy(DisplayChannelClient *dcc, uint32_t surface_id,
>      RedSurface *surface;
>      QRegion *surface_lossy_region;
>      QRegion lossy_region;
> -    RedWorker *worker = DCC_TO_WORKER(dcc);
> +    DisplayChannel *display = DCC_TO_DC(dcc);
>
> -    VALIDATE_SURFACE_RETVAL(worker, surface_id, FALSE);
> -    surface = &worker->surfaces[surface_id];
> +    VALIDATE_SURFACE_RETVAL(display, surface_id, FALSE);
> +    surface = &display->surfaces[surface_id];
>      surface_lossy_region = &dcc->surface_client_lossy_region[surface_id];
>
>      if (!area) {
> @@ -5256,7 +5162,7 @@ static int is_brush_lossy(RedChannelClient *rcc, SpiceBrush *brush,
>      }
>  }
>
> -static void surface_lossy_region_update(RedWorker *worker, DisplayChannelClient *dcc,
> +static void surface_lossy_region_update(DisplayChannelClient *dcc,
>                                          Drawable *item, int has_mask, int lossy)
>  {
>      QRegion *surface_lossy_region;
> @@ -5367,8 +5273,7 @@ static inline int drawable_depends_on_areas(Drawable *drawable,
>  }
>
>
> -static int pipe_rendered_drawables_intersect_with_areas(RedWorker *worker,
> -                                                        DisplayChannelClient *dcc,
> +static int pipe_rendered_drawables_intersect_with_areas(DisplayChannelClient *dcc,
>                                                          int surface_ids[],
>                                                          SpiceRect *surface_areas[],
>                                                          int num_surfaces)
> @@ -5400,8 +5305,7 @@ static int pipe_rendered_drawables_intersect_with_areas(RedWorker *worker,
>      return FALSE;
>  }
>
> -static void red_pipe_replace_rendered_drawables_with_images(RedWorker *worker,
> -                                                            DisplayChannelClient *dcc,
> +static void red_pipe_replace_rendered_drawables_with_images(DisplayChannelClient *dcc,
>                                                              int first_surface_id,
>                                                              SpiceRect *first_area)
>  {
> @@ -5456,15 +5360,15 @@ static void red_pipe_replace_rendered_drawables_with_images(RedWorker *worker,
>      }
>  }
>
> -static void red_add_lossless_drawable_dependencies(RedWorker *worker,
> -                                                   RedChannelClient *rcc,
> +static void red_add_lossless_drawable_dependencies(RedChannelClient *rcc,
>                                                     Drawable *item,
>                                                     int deps_surfaces_ids[],
>                                                     SpiceRect *deps_areas[],
>                                                     int num_deps)
>  {
> -    RedDrawable *drawable = item->red_drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> +    DisplayChannel *display = DCC_TO_DC(dcc);
> +    RedDrawable *drawable = item->red_drawable;
>      int sync_rendered = FALSE;
>      int i;
>
> @@ -5477,7 +5381,7 @@ static void red_add_lossless_drawable_dependencies(RedWorker *worker,
>          // that were rendered, affected the areas that need to be resent
>          if (!drawable_intersects_with_areas(item, deps_surfaces_ids,
>                                              deps_areas, num_deps)) {
> -            if (pipe_rendered_drawables_intersect_with_areas(worker, dcc,
> +            if (pipe_rendered_drawables_intersect_with_areas(dcc,
>                                                               deps_surfaces_ids,
>                                                               deps_areas,
>                                                               num_deps)) {
> @@ -5489,7 +5393,7 @@ static void red_add_lossless_drawable_dependencies(RedWorker *worker,
>      } else {
>          sync_rendered = FALSE;
>          for (i = 0; i < num_deps; i++) {
> -            red_update_area_till(worker, deps_areas[i],
> +            red_update_area_till(display, deps_areas[i],
>                                   deps_surfaces_ids[i], item);
>          }
>      }
> @@ -5512,11 +5416,11 @@ static void red_add_lossless_drawable_dependencies(RedWorker *worker,
>          drawable_bbox[0] = &drawable->bbox;
>
>          // check if the other rendered images in the pipe have updated the drawable bbox
> -        if (pipe_rendered_drawables_intersect_with_areas(worker, dcc,
> +        if (pipe_rendered_drawables_intersect_with_areas(dcc,
>                                                           drawable_surface_id,
>                                                           drawable_bbox,
>                                                           1)) {
> -            red_pipe_replace_rendered_drawables_with_images(worker, dcc,
> +            red_pipe_replace_rendered_drawables_with_images(dcc,
>                                                              drawable->surface_id,
>                                                              &drawable->bbox);
>          }
> @@ -5526,10 +5430,9 @@ static void red_add_lossless_drawable_dependencies(RedWorker *worker,
>      }
>  }
>
> -static void red_marshall_qxl_draw_fill(RedWorker *worker,
> -                                   RedChannelClient *rcc,
> -                                   SpiceMarshaller *base_marshaller,
> -                                   DrawablePipeItem *dpi)
> +static void red_marshall_qxl_draw_fill(RedChannelClient *rcc,
> +                                       SpiceMarshaller *base_marshaller,
> +                                       DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
> @@ -5554,13 +5457,12 @@ static void red_marshall_qxl_draw_fill(RedWorker *worker,
>  }
>
>
> -static void red_lossy_marshall_qxl_draw_fill(RedWorker *worker,
> -                                         RedChannelClient *rcc,
> -                                         SpiceMarshaller *m,
> -                                         DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_fill(RedChannelClient *rcc,
> +                                             SpiceMarshaller *m,
> +                                             DrawablePipeItem *dpi)
>  {
> -    Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> +    Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
>
>      int dest_allowed_lossy = FALSE;
> @@ -5587,9 +5489,9 @@ static void red_lossy_marshall_qxl_draw_fill(RedWorker *worker,
>          !(brush_is_lossy && (brush_bitmap_data.type == BITMAP_DATA_TYPE_SURFACE))) {
>          int has_mask = !!drawable->u.fill.mask.bitmap;
>
> -        red_marshall_qxl_draw_fill(worker, rcc, m, dpi);
> +        red_marshall_qxl_draw_fill(rcc, m, dpi);
>          // either the brush operation is opaque, or the dest is not lossy
> -        surface_lossy_region_update(worker, dcc, item, has_mask, FALSE);
> +        surface_lossy_region_update(dcc, item, has_mask, FALSE);
>      } else {
>          int resend_surface_ids[2];
>          SpiceRect *resend_areas[2];
> @@ -5607,18 +5509,17 @@ static void red_lossy_marshall_qxl_draw_fill(RedWorker *worker,
>              num_resend++;
>          }
>
> -        red_add_lossless_drawable_dependencies(worker, rcc, item,
> +        red_add_lossless_drawable_dependencies(rcc, item,
>                                                 resend_surface_ids, resend_areas, num_resend);
>      }
>  }
>
> -static FillBitsType red_marshall_qxl_draw_opaque(RedWorker *worker,
> -                                             RedChannelClient *rcc,
> -                                             SpiceMarshaller *base_marshaller,
> -                                             DrawablePipeItem *dpi, int src_allowed_lossy)
> +static FillBitsType red_marshall_qxl_draw_opaque(RedChannelClient *rcc,
> +                                                 SpiceMarshaller *base_marshaller,
> +                                                 DrawablePipeItem *dpi, int src_allowed_lossy)
>  {
> -    Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> +    Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
>      SpiceMarshaller *brush_pat_out;
>      SpiceMarshaller *src_bitmap_out;
> @@ -5646,13 +5547,12 @@ static FillBitsType red_marshall_qxl_draw_opaque(RedWorker *worker,
>      return src_send_type;
>  }
>
> -static void red_lossy_marshall_qxl_draw_opaque(RedWorker *worker,
> -                                           RedChannelClient *rcc,
> -                                           SpiceMarshaller *m,
> -                                           DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_opaque(RedChannelClient *rcc,
> +                                               SpiceMarshaller *m,
> +                                               DrawablePipeItem *dpi)
>  {
> -    Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> +    Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
>
>      int src_allowed_lossy;
> @@ -5682,14 +5582,14 @@ static void red_lossy_marshall_qxl_draw_opaque(RedWorker *worker,
>          FillBitsType src_send_type;
>          int has_mask = !!drawable->u.opaque.mask.bitmap;
>
> -        src_send_type = red_marshall_qxl_draw_opaque(worker, rcc, m, dpi, src_allowed_lossy);
> +        src_send_type = red_marshall_qxl_draw_opaque(rcc, m, dpi, src_allowed_lossy);
>          if (src_send_type == FILL_BITS_TYPE_COMPRESS_LOSSY) {
>              src_is_lossy = TRUE;
>          } else if (src_send_type == FILL_BITS_TYPE_COMPRESS_LOSSLESS) {
>              src_is_lossy = FALSE;
>          }
>
> -        surface_lossy_region_update(worker, dcc, item, has_mask, src_is_lossy);
> +        surface_lossy_region_update(dcc, item, has_mask, src_is_lossy);
>      } else {
>          int resend_surface_ids[2];
>          SpiceRect *resend_areas[2];
> @@ -5707,19 +5607,18 @@ static void red_lossy_marshall_qxl_draw_opaque(RedWorker *worker,
>              num_resend++;
>          }
>
> -        red_add_lossless_drawable_dependencies(worker, rcc, item,
> +        red_add_lossless_drawable_dependencies(rcc, item,
>                                                 resend_surface_ids, resend_areas, num_resend);
>      }
>  }
>
> -static FillBitsType red_marshall_qxl_draw_copy(RedWorker *worker,
> -                                           RedChannelClient *rcc,
> -                                           SpiceMarshaller *base_marshaller,
> -                                           DrawablePipeItem *dpi, int src_allowed_lossy)
> +static FillBitsType red_marshall_qxl_draw_copy(RedChannelClient *rcc,
> +                                               SpiceMarshaller *base_marshaller,
> +                                               DrawablePipeItem *dpi, int src_allowed_lossy)
>  {
> +    DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
>      Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
> -    DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
>      SpiceMarshaller *src_bitmap_out;
>      SpiceMarshaller *mask_bitmap_out;
>      SpiceCopy copy;
> @@ -5739,13 +5638,12 @@ static FillBitsType red_marshall_qxl_draw_copy(RedWorker *worker,
>      return src_send_type;
>  }
>
> -static void red_lossy_marshall_qxl_draw_copy(RedWorker *worker,
> -                                         RedChannelClient *rcc,
> -                                         SpiceMarshaller *base_marshaller,
> -                                         DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_copy(RedChannelClient *rcc,
> +                                             SpiceMarshaller *base_marshaller,
> +                                             DrawablePipeItem *dpi)
>  {
> -    Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> +    Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
>      int has_mask = !!drawable->u.copy.mask.bitmap;
>      int src_is_lossy;
> @@ -5755,23 +5653,22 @@ static void red_lossy_marshall_qxl_draw_copy(RedWorker *worker,
>      src_is_lossy = is_bitmap_lossy(rcc, drawable->u.copy.src_bitmap,
>                                     &drawable->u.copy.src_area, item, &src_bitmap_data);
>
> -    src_send_type = red_marshall_qxl_draw_copy(worker, rcc, base_marshaller, dpi, TRUE);
> +    src_send_type = red_marshall_qxl_draw_copy(rcc, base_marshaller, dpi, TRUE);
>      if (src_send_type == FILL_BITS_TYPE_COMPRESS_LOSSY) {
>          src_is_lossy = TRUE;
>      } else if (src_send_type == FILL_BITS_TYPE_COMPRESS_LOSSLESS) {
>          src_is_lossy = FALSE;
>      }
> -    surface_lossy_region_update(worker, dcc, item, has_mask,
> +    surface_lossy_region_update(dcc, item, has_mask,
>                                  src_is_lossy);
>  }
>
> -static void red_marshall_qxl_draw_transparent(RedWorker *worker,
> -                                          RedChannelClient *rcc,
> -                                          SpiceMarshaller *base_marshaller,
> -                                          DrawablePipeItem *dpi)
> +static void red_marshall_qxl_draw_transparent(RedChannelClient *rcc,
> +                                              SpiceMarshaller *base_marshaller,
> +                                              DrawablePipeItem *dpi)
>  {
> -    Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> +    Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
>      SpiceMarshaller *src_bitmap_out;
>      SpiceTransparent transparent;
> @@ -5786,10 +5683,9 @@ static void red_marshall_qxl_draw_transparent(RedWorker *worker,
>      fill_bits(dcc, src_bitmap_out, transparent.src_bitmap, item, FALSE);
>  }
>
> -static void red_lossy_marshall_qxl_draw_transparent(RedWorker *worker,
> -                                                RedChannelClient *rcc,
> -                                                SpiceMarshaller *base_marshaller,
> -                                                DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_transparent(RedChannelClient *rcc,
> +                                                    SpiceMarshaller *base_marshaller,
> +                                                    DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
> @@ -5800,7 +5696,7 @@ static void red_lossy_marshall_qxl_draw_transparent(RedWorker *worker,
>                                     &drawable->u.transparent.src_area, item, &src_bitmap_data);
>
>      if (!src_is_lossy || (src_bitmap_data.type != BITMAP_DATA_TYPE_SURFACE)) {
> -        red_marshall_qxl_draw_transparent(worker, rcc, base_marshaller, dpi);
> +        red_marshall_qxl_draw_transparent(rcc, base_marshaller, dpi);
>          // don't update surface lossy region since transperent areas might be lossy
>      } else {
>          int resend_surface_ids[1];
> @@ -5809,16 +5705,15 @@ static void red_lossy_marshall_qxl_draw_transparent(RedWorker *worker,
>          resend_surface_ids[0] = src_bitmap_data.id;
>          resend_areas[0] = &src_bitmap_data.lossy_rect;
>
> -        red_add_lossless_drawable_dependencies(worker, rcc, item,
> +        red_add_lossless_drawable_dependencies(rcc, item,
>                                                 resend_surface_ids, resend_areas, 1);
>      }
>  }
>
> -static FillBitsType red_marshall_qxl_draw_alpha_blend(RedWorker *worker,
> -                                                  RedChannelClient *rcc,
> -                                                  SpiceMarshaller *base_marshaller,
> -                                                  DrawablePipeItem *dpi,
> -                                                  int src_allowed_lossy)
> +static FillBitsType red_marshall_qxl_draw_alpha_blend(RedChannelClient *rcc,
> +                                                      SpiceMarshaller *base_marshaller,
> +                                                      DrawablePipeItem *dpi,
> +                                                      int src_allowed_lossy)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -5840,10 +5735,9 @@ static FillBitsType red_marshall_qxl_draw_alpha_blend(RedWorker *worker,
>      return src_send_type;
>  }
>
> -static void red_lossy_marshall_qxl_draw_alpha_blend(RedWorker *worker,
> -                                                RedChannelClient *rcc,
> -                                                SpiceMarshaller *base_marshaller,
> -                                                DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_alpha_blend(RedChannelClient *rcc,
> +                                                    SpiceMarshaller *base_marshaller,
> +                                                    DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -5855,7 +5749,7 @@ static void red_lossy_marshall_qxl_draw_alpha_blend(RedWorker *worker,
>      src_is_lossy = is_bitmap_lossy(rcc, drawable->u.alpha_blend.src_bitmap,
>                                     &drawable->u.alpha_blend.src_area, item, &src_bitmap_data);
>
> -    src_send_type = red_marshall_qxl_draw_alpha_blend(worker, rcc, base_marshaller, dpi, TRUE);
> +    src_send_type = red_marshall_qxl_draw_alpha_blend(rcc, base_marshaller, dpi, TRUE);
>
>      if (src_send_type == FILL_BITS_TYPE_COMPRESS_LOSSY) {
>          src_is_lossy = TRUE;
> @@ -5864,14 +5758,13 @@ static void red_lossy_marshall_qxl_draw_alpha_blend(RedWorker *worker,
>      }
>
>      if (src_is_lossy) {
> -        surface_lossy_region_update(worker, dcc, item, FALSE, src_is_lossy);
> +        surface_lossy_region_update(dcc, item, FALSE, src_is_lossy);
>      } // else, the area stays lossy/lossless as the destination
>  }
>
> -static void red_marshall_qxl_copy_bits(RedWorker *worker,
> -                                   RedChannelClient *rcc,
> -                                   SpiceMarshaller *base_marshaller,
> -                                   DrawablePipeItem *dpi)
> +static void red_marshall_qxl_copy_bits(RedChannelClient *rcc,
> +                                       SpiceMarshaller *base_marshaller,
> +                                       DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
> @@ -5884,10 +5777,9 @@ static void red_marshall_qxl_copy_bits(RedWorker *worker,
>                           &copy_bits);
>  }
>
> -static void red_lossy_marshall_qxl_copy_bits(RedWorker *worker,
> -                                         RedChannelClient *rcc,
> -                                         SpiceMarshaller *base_marshaller,
> -                                         DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_copy_bits(RedChannelClient *rcc,
> +                                             SpiceMarshaller *base_marshaller,
> +                                             DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -5898,7 +5790,7 @@ static void red_lossy_marshall_qxl_copy_bits(RedWorker *worker,
>      int src_is_lossy;
>      SpiceRect src_lossy_area;
>
> -    red_marshall_qxl_copy_bits(worker, rcc, base_marshaller, dpi);
> +    red_marshall_qxl_copy_bits(rcc, base_marshaller, dpi);
>
>      horz_offset = drawable->u.copy_bits.src_pos.x - drawable->bbox.left;
>      vert_offset = drawable->u.copy_bits.src_pos.y - drawable->bbox.top;
> @@ -5911,14 +5803,12 @@ static void red_lossy_marshall_qxl_copy_bits(RedWorker *worker,
>      src_is_lossy = is_surface_area_lossy(dcc, item->surface_id,
>                                           &src_rect, &src_lossy_area);
>
> -    surface_lossy_region_update(worker, dcc, item, FALSE,
> -                                src_is_lossy);
> +    surface_lossy_region_update(dcc, item, FALSE, src_is_lossy);
>  }
>
> -static void red_marshall_qxl_draw_blend(RedWorker *worker,
> -                                    RedChannelClient *rcc,
> -                                    SpiceMarshaller *base_marshaller,
> -                                    DrawablePipeItem *dpi)
> +static void red_marshall_qxl_draw_blend(RedChannelClient *rcc,
> +                                        SpiceMarshaller *base_marshaller,
> +                                        DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -5940,10 +5830,9 @@ static void red_marshall_qxl_draw_blend(RedWorker *worker,
>      fill_mask(rcc, mask_bitmap_out, blend.mask.bitmap, item);
>  }
>
> -static void red_lossy_marshall_qxl_draw_blend(RedWorker *worker,
> -                                          RedChannelClient *rcc,
> -                                          SpiceMarshaller *base_marshaller,
> -                                          DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_blend(RedChannelClient *rcc,
> +                                              SpiceMarshaller *base_marshaller,
> +                                              DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -5960,7 +5849,7 @@ static void red_lossy_marshall_qxl_draw_blend(RedWorker *worker,
>
>      if (!dest_is_lossy &&
>          (!src_is_lossy || (src_bitmap_data.type != BITMAP_DATA_TYPE_SURFACE))) {
> -        red_marshall_qxl_draw_blend(worker, rcc, base_marshaller, dpi);
> +        red_marshall_qxl_draw_blend(rcc, base_marshaller, dpi);
>      } else {
>          int resend_surface_ids[2];
>          SpiceRect *resend_areas[2];
> @@ -5978,15 +5867,14 @@ static void red_lossy_marshall_qxl_draw_blend(RedWorker *worker,
>              num_resend++;
>          }
>
> -        red_add_lossless_drawable_dependencies(worker, rcc, item,
> +        red_add_lossless_drawable_dependencies(rcc, item,
>                                                 resend_surface_ids, resend_areas, num_resend);
>      }
>  }
>
> -static void red_marshall_qxl_draw_blackness(RedWorker *worker,
> -                                        RedChannelClient *rcc,
> -                                        SpiceMarshaller *base_marshaller,
> -                                        DrawablePipeItem *dpi)
> +static void red_marshall_qxl_draw_blackness(RedChannelClient *rcc,
> +                                            SpiceMarshaller *base_marshaller,
> +                                            DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
> @@ -6004,25 +5892,23 @@ static void red_marshall_qxl_draw_blackness(RedWorker *worker,
>      fill_mask(rcc, mask_bitmap_out, blackness.mask.bitmap, item);
>  }
>
> -static void red_lossy_marshall_qxl_draw_blackness(RedWorker *worker,
> -                                              RedChannelClient *rcc,
> -                                              SpiceMarshaller *base_marshaller,
> -                                              DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_blackness(RedChannelClient *rcc,
> +                                                  SpiceMarshaller *base_marshaller,
> +                                                  DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
>      RedDrawable *drawable = item->red_drawable;
>      int has_mask = !!drawable->u.blackness.mask.bitmap;
>
> -    red_marshall_qxl_draw_blackness(worker, rcc, base_marshaller, dpi);
> +    red_marshall_qxl_draw_blackness(rcc, base_marshaller, dpi);
>
> -    surface_lossy_region_update(worker, dcc, item, has_mask, FALSE);
> +    surface_lossy_region_update(dcc, item, has_mask, FALSE);
>  }
>
> -static void red_marshall_qxl_draw_whiteness(RedWorker *worker,
> -                                        RedChannelClient *rcc,
> -                                        SpiceMarshaller *base_marshaller,
> -                                        DrawablePipeItem *dpi)
> +static void red_marshall_qxl_draw_whiteness(RedChannelClient *rcc,
> +                                            SpiceMarshaller *base_marshaller,
> +                                            DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
> @@ -6040,25 +5926,23 @@ static void red_marshall_qxl_draw_whiteness(RedWorker *worker,
>      fill_mask(rcc, mask_bitmap_out, whiteness.mask.bitmap, item);
>  }
>
> -static void red_lossy_marshall_qxl_draw_whiteness(RedWorker *worker,
> -                                              RedChannelClient *rcc,
> -                                              SpiceMarshaller *base_marshaller,
> -                                              DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_whiteness(RedChannelClient *rcc,
> +                                                  SpiceMarshaller *base_marshaller,
> +                                                  DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
>      RedDrawable *drawable = item->red_drawable;
>      int has_mask = !!drawable->u.whiteness.mask.bitmap;
>
> -    red_marshall_qxl_draw_whiteness(worker, rcc, base_marshaller, dpi);
> +    red_marshall_qxl_draw_whiteness(rcc, base_marshaller, dpi);
>
> -    surface_lossy_region_update(worker, dcc, item, has_mask, FALSE);
> +    surface_lossy_region_update(dcc, item, has_mask, FALSE);
>  }
>
> -static void red_marshall_qxl_draw_inverse(RedWorker *worker,
> -                                        RedChannelClient *rcc,
> -                                        SpiceMarshaller *base_marshaller,
> -                                        Drawable *item)
> +static void red_marshall_qxl_draw_inverse(RedChannelClient *rcc,
> +                                          SpiceMarshaller *base_marshaller,
> +                                          Drawable *item)
>  {
>      RedDrawable *drawable = item->red_drawable;
>      SpiceMarshaller *mask_bitmap_out;
> @@ -6075,18 +5959,16 @@ static void red_marshall_qxl_draw_inverse(RedWorker *worker,
>      fill_mask(rcc, mask_bitmap_out, inverse.mask.bitmap, item);
>  }
>
> -static void red_lossy_marshall_qxl_draw_inverse(RedWorker *worker,
> -                                            RedChannelClient *rcc,
> -                                            SpiceMarshaller *base_marshaller,
> -                                            Drawable *item)
> +static void red_lossy_marshall_qxl_draw_inverse(RedChannelClient *rcc,
> +                                                SpiceMarshaller *base_marshaller,
> +                                                Drawable *item)
>  {
> -    red_marshall_qxl_draw_inverse(worker, rcc, base_marshaller, item);
> +    red_marshall_qxl_draw_inverse(rcc, base_marshaller, item);
>  }
>
> -static void red_marshall_qxl_draw_rop3(RedWorker *worker,
> -                                   RedChannelClient *rcc,
> -                                   SpiceMarshaller *base_marshaller,
> -                                   DrawablePipeItem *dpi)
> +static void red_marshall_qxl_draw_rop3(RedChannelClient *rcc,
> +                                       SpiceMarshaller *base_marshaller,
> +                                       DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -6113,10 +5995,9 @@ static void red_marshall_qxl_draw_rop3(RedWorker *worker,
>      fill_mask(rcc, mask_bitmap_out, rop3.mask.bitmap, item);
>  }
>
> -static void red_lossy_marshall_qxl_draw_rop3(RedWorker *worker,
> -                                         RedChannelClient *rcc,
> -                                         SpiceMarshaller *base_marshaller,
> -                                         DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_rop3(RedChannelClient *rcc,
> +                                             SpiceMarshaller *base_marshaller,
> +                                             DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -6139,8 +6020,8 @@ static void red_lossy_marshall_qxl_draw_rop3(RedWorker *worker,
>          (!brush_is_lossy || (brush_bitmap_data.type != BITMAP_DATA_TYPE_SURFACE)) &&
>          !dest_is_lossy) {
>          int has_mask = !!drawable->u.rop3.mask.bitmap;
> -        red_marshall_qxl_draw_rop3(worker, rcc, base_marshaller, dpi);
> -        surface_lossy_region_update(worker, dcc, item, has_mask, FALSE);
> +        red_marshall_qxl_draw_rop3(rcc, base_marshaller, dpi);
> +        surface_lossy_region_update(dcc, item, has_mask, FALSE);
>      } else {
>          int resend_surface_ids[3];
>          SpiceRect *resend_areas[3];
> @@ -6164,15 +6045,14 @@ static void red_lossy_marshall_qxl_draw_rop3(RedWorker *worker,
>              num_resend++;
>          }
>
> -        red_add_lossless_drawable_dependencies(worker, rcc, item,
> +        red_add_lossless_drawable_dependencies(rcc, item,
>                                                 resend_surface_ids, resend_areas, num_resend);
>      }
>  }
>
> -static void red_marshall_qxl_draw_composite(RedWorker *worker,
> -                                     RedChannelClient *rcc,
> -                                     SpiceMarshaller *base_marshaller,
> -                                     DrawablePipeItem *dpi)
> +static void red_marshall_qxl_draw_composite(RedChannelClient *rcc,
> +                                            SpiceMarshaller *base_marshaller,
> +                                            DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -6195,8 +6075,7 @@ static void red_marshall_qxl_draw_composite(RedWorker *worker,
>      }
>  }
>
> -static void red_lossy_marshall_qxl_draw_composite(RedWorker *worker,
> -                                                  RedChannelClient *rcc,
> +static void red_lossy_marshall_qxl_draw_composite(RedChannelClient *rcc,
>                                                    SpiceMarshaller *base_marshaller,
>                                                    DrawablePipeItem *dpi)
>  {
> @@ -6221,8 +6100,8 @@ static void red_lossy_marshall_qxl_draw_composite(RedWorker *worker,
>      if ((!src_is_lossy || (src_bitmap_data.type != BITMAP_DATA_TYPE_SURFACE))   &&
>          (!mask_is_lossy || (mask_bitmap_data.type != BITMAP_DATA_TYPE_SURFACE)) &&
>          !dest_is_lossy) {
> -        red_marshall_qxl_draw_composite(worker, rcc, base_marshaller, dpi);
> -        surface_lossy_region_update(worker, dcc, item, FALSE, FALSE);
> +        red_marshall_qxl_draw_composite(rcc, base_marshaller, dpi);
> +        surface_lossy_region_update(dcc, item, FALSE, FALSE);
>      }
>      else {
>          int resend_surface_ids[3];
> @@ -6247,15 +6126,14 @@ static void red_lossy_marshall_qxl_draw_composite(RedWorker *worker,
>              num_resend++;
>          }
>
> -        red_add_lossless_drawable_dependencies(worker, rcc, item,
> +        red_add_lossless_drawable_dependencies(rcc, item,
>                                                 resend_surface_ids, resend_areas, num_resend);
>      }
>  }
>
> -static void red_marshall_qxl_draw_stroke(RedWorker *worker,
> -                                     RedChannelClient *rcc,
> -                                     SpiceMarshaller *base_marshaller,
> -                                     DrawablePipeItem *dpi)
> +static void red_marshall_qxl_draw_stroke(RedChannelClient *rcc,
> +                                         SpiceMarshaller *base_marshaller,
> +                                         DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -6278,10 +6156,9 @@ static void red_marshall_qxl_draw_stroke(RedWorker *worker,
>      }
>  }
>
> -static void red_lossy_marshall_qxl_draw_stroke(RedWorker *worker,
> -                                           RedChannelClient *rcc,
> -                                           SpiceMarshaller *base_marshaller,
> -                                           DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_stroke(RedChannelClient *rcc,
> +                                               SpiceMarshaller *base_marshaller,
> +                                               DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -6310,7 +6187,7 @@ static void red_lossy_marshall_qxl_draw_stroke(RedWorker *worker,
>      if (!dest_is_lossy &&
>          (!brush_is_lossy || (brush_bitmap_data.type != BITMAP_DATA_TYPE_SURFACE)))
>      {
> -        red_marshall_qxl_draw_stroke(worker, rcc, base_marshaller, dpi);
> +        red_marshall_qxl_draw_stroke(rcc, base_marshaller, dpi);
>      } else {
>          int resend_surface_ids[2];
>          SpiceRect *resend_areas[2];
> @@ -6329,15 +6206,14 @@ static void red_lossy_marshall_qxl_draw_stroke(RedWorker *worker,
>              num_resend++;
>          }
>
> -        red_add_lossless_drawable_dependencies(worker, rcc, item,
> +        red_add_lossless_drawable_dependencies(rcc, item,
>                                                 resend_surface_ids, resend_areas, num_resend);
>      }
>  }
>
> -static void red_marshall_qxl_draw_text(RedWorker *worker,
> -                                   RedChannelClient *rcc,
> -                                   SpiceMarshaller *base_marshaller,
> -                                   DrawablePipeItem *dpi)
> +static void red_marshall_qxl_draw_text(RedChannelClient *rcc,
> +                                       SpiceMarshaller *base_marshaller,
> +                                       DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -6362,10 +6238,9 @@ static void red_marshall_qxl_draw_text(RedWorker *worker,
>      }
>  }
>
> -static void red_lossy_marshall_qxl_draw_text(RedWorker *worker,
> -                                         RedChannelClient *rcc,
> -                                         SpiceMarshaller *base_marshaller,
> -                                         DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_draw_text(RedChannelClient *rcc,
> +                                             SpiceMarshaller *base_marshaller,
> +                                             DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      DisplayChannelClient *dcc = RCC_TO_DCC(rcc);
> @@ -6402,7 +6277,7 @@ static void red_lossy_marshall_qxl_draw_text(RedWorker *worker,
>      if (!dest_is_lossy &&
>          (!fg_is_lossy || (fg_bitmap_data.type != BITMAP_DATA_TYPE_SURFACE)) &&
>          (!bg_is_lossy || (bg_bitmap_data.type != BITMAP_DATA_TYPE_SURFACE))) {
> -        red_marshall_qxl_draw_text(worker, rcc, base_marshaller, dpi);
> +        red_marshall_qxl_draw_text(rcc, base_marshaller, dpi);
>      } else {
>          int resend_surface_ids[3];
>          SpiceRect *resend_areas[3];
> @@ -6425,111 +6300,112 @@ static void red_lossy_marshall_qxl_draw_text(RedWorker *worker,
>              resend_areas[num_resend] = &dest_lossy_area;
>              num_resend++;
>          }
> -        red_add_lossless_drawable_dependencies(worker, rcc, item,
> +        red_add_lossless_drawable_dependencies(rcc, item,
>                                                 resend_surface_ids, resend_areas, num_resend);
>      }
>  }
>
> -static void red_lossy_marshall_qxl_drawable(RedWorker *worker, RedChannelClient *rcc,
> -                                        SpiceMarshaller *base_marshaller, DrawablePipeItem *dpi)
> +static void red_lossy_marshall_qxl_drawable(RedChannelClient *rcc,
> +                                            SpiceMarshaller *base_marshaller,
> +                                            DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      switch (item->red_drawable->type) {
>      case QXL_DRAW_FILL:
> -        red_lossy_marshall_qxl_draw_fill(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_fill(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_OPAQUE:
> -        red_lossy_marshall_qxl_draw_opaque(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_opaque(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_COPY:
> -        red_lossy_marshall_qxl_draw_copy(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_copy(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_TRANSPARENT:
> -        red_lossy_marshall_qxl_draw_transparent(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_transparent(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_ALPHA_BLEND:
> -        red_lossy_marshall_qxl_draw_alpha_blend(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_alpha_blend(rcc, base_marshaller, dpi);
>          break;
>      case QXL_COPY_BITS:
> -        red_lossy_marshall_qxl_copy_bits(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_copy_bits(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_BLEND:
> -        red_lossy_marshall_qxl_draw_blend(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_blend(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_BLACKNESS:
> -        red_lossy_marshall_qxl_draw_blackness(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_blackness(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_WHITENESS:
> -        red_lossy_marshall_qxl_draw_whiteness(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_whiteness(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_INVERS:
> -        red_lossy_marshall_qxl_draw_inverse(worker, rcc, base_marshaller, item);
> +        red_lossy_marshall_qxl_draw_inverse(rcc, base_marshaller, item);
>          break;
>      case QXL_DRAW_ROP3:
> -        red_lossy_marshall_qxl_draw_rop3(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_rop3(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_COMPOSITE:
> -        red_lossy_marshall_qxl_draw_composite(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_composite(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_STROKE:
> -        red_lossy_marshall_qxl_draw_stroke(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_stroke(rcc, base_marshaller, dpi);
>          break;
>      case QXL_DRAW_TEXT:
> -        red_lossy_marshall_qxl_draw_text(worker, rcc, base_marshaller, dpi);
> +        red_lossy_marshall_qxl_draw_text(rcc, base_marshaller, dpi);
>          break;
>      default:
>          spice_error("invalid type");
>      }
>  }
>
> -static inline void red_marshall_qxl_drawable(RedWorker *worker, RedChannelClient *rcc,
> -                                SpiceMarshaller *m, DrawablePipeItem *dpi)
> +static inline void red_marshall_qxl_drawable(RedChannelClient *rcc,
> +                                             SpiceMarshaller *m, DrawablePipeItem *dpi)
>  {
>      Drawable *item = dpi->drawable;
>      RedDrawable *drawable = item->red_drawable;
>
>      switch (drawable->type) {
>      case QXL_DRAW_FILL:
> -        red_marshall_qxl_draw_fill(worker, rcc, m, dpi);
> +        red_marshall_qxl_draw_fill(rcc, m, dpi);
>          break;
>      case QXL_DRAW_OPAQUE:
> -        red_marshall_qxl_draw_opaque(worker, rcc, m, dpi, FALSE);
> +        red_marshall_qxl_draw_opaque(rcc, m, dpi, FALSE);
>          break;
>      case QXL_DRAW_COPY:
> -        red_marshall_qxl_draw_copy(worker, rcc, m, dpi, FALSE);
> +        red_marshall_qxl_draw_copy(rcc, m, dpi, FALSE);
>          break;
>      case QXL_DRAW_TRANSPARENT:
> -        red_marshall_qxl_draw_transparent(worker, rcc, m, dpi);
> +        red_marshall_qxl_draw_transparent(rcc, m, dpi);
>          break;
>      case QXL_DRAW_ALPHA_BLEND:
> -        red_marshall_qxl_draw_alpha_blend(worker, rcc, m, dpi, FALSE);
> +        red_marshall_qxl_draw_alpha_blend(rcc, m, dpi, FALSE);
>          break;
>      case QXL_COPY_BITS:
> -        red_marshall_qxl_copy_bits(worker, rcc, m, dpi);
> +        red_marshall_qxl_copy_bits(rcc, m, dpi);
>          break;
>      case QXL_DRAW_BLEND:
> -        red_marshall_qxl_draw_blend(worker, rcc, m, dpi);
> +        red_marshall_qxl_draw_blend(rcc, m, dpi);
>          break;
>      case QXL_DRAW_BLACKNESS:
> -        red_marshall_qxl_draw_blackness(worker, rcc, m, dpi);
> +        red_marshall_qxl_draw_blackness(rcc, m, dpi);
>          break;
>      case QXL_DRAW_WHITENESS:
> -        red_marshall_qxl_draw_whiteness(worker, rcc, m, dpi);
> +        red_marshall_qxl_draw_whiteness(rcc, m, dpi);
>          break;
>      case QXL_DRAW_INVERS:
> -        red_marshall_qxl_draw_inverse(worker, rcc, m, item);
> +        red_marshall_qxl_draw_inverse(rcc, m, item);
>          break;
>      case QXL_DRAW_ROP3:
> -        red_marshall_qxl_draw_rop3(worker, rcc, m, dpi);
> +        red_marshall_qxl_draw_rop3(rcc, m, dpi);
>          break;
>      case QXL_DRAW_STROKE:
> -        red_marshall_qxl_draw_stroke(worker, rcc, m, dpi);
> +        red_marshall_qxl_draw_stroke(rcc, m, dpi);
>          break;
>      case QXL_DRAW_COMPOSITE:
> -        red_marshall_qxl_draw_composite(worker, rcc, m, dpi);
> +        red_marshall_qxl_draw_composite(rcc, m, dpi);
>          break;
>      case QXL_DRAW_TEXT:
> -        red_marshall_qxl_draw_text(worker, rcc, m, dpi);
> +        red_marshall_qxl_draw_text(rcc, m, dpi);
>          break;
>      default:
>          spice_error("invalid type");
> @@ -6828,9 +6704,9 @@ static inline void marshall_qxl_drawable(RedChannelClient *rcc,
>          return;
>      }
>      if (!display_channel->enable_jpeg)
> -        red_marshall_qxl_drawable(display_channel->common.worker, rcc, m, dpi);
> +        red_marshall_qxl_drawable(rcc, m, dpi);
>      else
> -        red_lossy_marshall_qxl_drawable(display_channel->common.worker, rcc, m, dpi);
> +        red_lossy_marshall_qxl_drawable(rcc, m, dpi);
>  }
>
>  static inline void red_marshall_inval_palette(RedChannelClient *rcc,
> @@ -7386,24 +7262,6 @@ static inline void red_push(RedWorker *worker)
>      }
>  }
>
> -void red_show_tree(RedWorker *worker)
> -{
> -    int x;
> -
> -    for (x = 0; x < NUM_SURFACES; ++x) {
> -        if (!worker->surfaces[x].context.canvas)
> -            continue;
> -
> -        RingItem *it;
> -        Ring *ring = &worker->surfaces[x].current;
> -        RING_FOREACH(it, ring) {
> -            TreeItem *now = SPICE_CONTAINEROF(it, TreeItem, siblings_link);
> -            tree_item_dump(now);
> -        }
> -
> -    }
> -}
> -
>  static void display_channel_client_on_disconnect(RedChannelClient *rcc)
>  {
>      DisplayChannel *display;
> @@ -7481,15 +7339,15 @@ static void red_migrate_display(DisplayChannel *display, RedChannelClient *rcc)
>  }
>
>  #ifdef USE_OPENGL
> -static SpiceCanvas *create_ogl_context_common(RedWorker *worker, OGLCtx *ctx, uint32_t width,
> -                                              uint32_t height, int32_t stride, uint8_t depth)
> +static SpiceCanvas *create_ogl_context_common(DisplayChannel *display, OGLCtx *ctx,
> +                                              uint32_t width, uint32_t height,
> +                                              int32_t stride, uint8_t depth)
>  {
> -    DisplayChannel *display = worker->display_channel;
>      SpiceCanvas *canvas;
>
>      oglctx_make_current(ctx);
>      if (!(canvas = gl_canvas_create(width, height, depth, &display->image_cache.base,
> -                                    &worker->image_surfaces, NULL, NULL, NULL))) {
> +                                    &display->image_surfaces, NULL, NULL, NULL))) {
>          return NULL;
>      }
>
> @@ -7500,8 +7358,8 @@ static SpiceCanvas *create_ogl_context_common(RedWorker *worker, OGLCtx *ctx, ui
>      return canvas;
>  }
>
> -static SpiceCanvas *create_ogl_pbuf_context(RedWorker *worker, uint32_t width, uint32_t height,
> -                                         int32_t stride, uint8_t depth)
> +static SpiceCanvas *create_ogl_pbuf_context(DisplayChannel *display, uint32_t width,
> +                                            uint32_t height, int32_t stride, uint8_t depth)
>  {
>      OGLCtx *ctx;
>      SpiceCanvas *canvas;
> @@ -7510,7 +7368,7 @@ static SpiceCanvas *create_ogl_pbuf_context(RedWorker *worker, uint32_t width, u
>          return NULL;
>      }
>
> -    if (!(canvas = create_ogl_context_common(worker, ctx, width, height, stride, depth))) {
> +    if (!(canvas = create_ogl_context_common(display, ctx, width, height, stride, depth))) {
>          oglctx_destroy(ctx);
>          return NULL;
>      }
> @@ -7518,8 +7376,9 @@ static SpiceCanvas *create_ogl_pbuf_context(RedWorker *worker, uint32_t width, u
>      return canvas;
>  }
>
> -static SpiceCanvas *create_ogl_pixmap_context(RedWorker *worker, uint32_t width, uint32_t height,
> -                                              int32_t stride, uint8_t depth) {
> +static SpiceCanvas *create_ogl_pixmap_context(DisplayChannel *display, uint32_t width,
> +                                              uint32_t height, int32_t stride, uint8_t depth)
> +{
>      OGLCtx *ctx;
>      SpiceCanvas *canvas;
>
> @@ -7527,7 +7386,7 @@ static SpiceCanvas *create_ogl_pixmap_context(RedWorker *worker, uint32_t width,
>          return NULL;
>      }
>
> -    if (!(canvas = create_ogl_context_common(worker, ctx, width, height, stride, depth))) {
> +    if (!(canvas = create_ogl_context_common(display, ctx, width, height, stride, depth))) {
>          oglctx_destroy(ctx);
>          return NULL;
>      }
> @@ -7536,11 +7395,10 @@ static SpiceCanvas *create_ogl_pixmap_context(RedWorker *worker, uint32_t width,
>  }
>  #endif
>
> -static inline void *create_canvas_for_surface(RedWorker *worker, RedSurface *surface,
> +static inline void *create_canvas_for_surface(DisplayChannel *display, RedSurface *surface,
>                                                uint32_t renderer, uint32_t width, uint32_t height,
>                                                int32_t stride, uint32_t format, void *line_0)
>  {
> -    DisplayChannel *display = worker->display_channel;
>      SpiceCanvas *canvas;
>
>      switch (renderer) {
> @@ -7548,18 +7406,18 @@ static inline void *create_canvas_for_surface(RedWorker *worker, RedSurface *sur
>          canvas = canvas_create_for_data(width, height, format,
>                                          line_0, stride,
>                                          &display->image_cache.base,
> -                                        &worker->image_surfaces, NULL, NULL, NULL);
> +                                        &display->image_surfaces, NULL, NULL, NULL);
>          surface->context.top_down = TRUE;
>          surface->context.canvas_draws_on_surface = TRUE;
>          return canvas;
>  #ifdef USE_OPENGL
>      case RED_RENDERER_OGL_PBUF:
> -        canvas = create_ogl_pbuf_context(worker, width, height, stride,
> +        canvas = create_ogl_pbuf_context(display, width, height, stride,
>                                           SPICE_SURFACE_FMT_DEPTH(format));
>          surface->context.top_down = FALSE;
>          return canvas;
>      case RED_RENDERER_OGL_PIXMAP:
> -        canvas = create_ogl_pixmap_context(worker, width, height, stride,
> +        canvas = create_ogl_pixmap_context(display, width, height, stride,
>                                             SPICE_SURFACE_FMT_DEPTH(format));
>          surface->context.top_down = FALSE;
>          return canvas;
> @@ -7593,17 +7451,17 @@ static SurfaceCreateItem *get_surface_create_item(
>
>  static inline void red_create_surface_item(DisplayChannelClient *dcc, int surface_id)
>  {
> +    DisplayChannel *display = dcc ? DCC_TO_DC(dcc) : NULL;
>      RedSurface *surface;
>      SurfaceCreateItem *create;
> -    RedWorker *worker = dcc ? DCC_TO_WORKER(dcc) : NULL;
>      uint32_t flags = is_primary_surface(DCC_TO_DC(dcc), surface_id) ? SPICE_SURFACE_FLAGS_PRIMARY : 0;
>
>      /* don't send redundant create surface commands to client */
> -    if (!dcc || worker->display_channel->common.during_target_migrate ||
> +    if (!dcc || display->common.during_target_migrate ||
>          dcc->surface_client_created[surface_id]) {
>          return;
>      }
> -    surface = &worker->surfaces[surface_id];
> +    surface = &display->surfaces[surface_id];
>      create = get_surface_create_item(RED_CHANNEL_CLIENT(dcc)->channel,
>              surface_id, surface->context.width, surface->context.height,
>                                       surface->context.format, flags);
> @@ -7611,33 +7469,32 @@ static inline void red_create_surface_item(DisplayChannelClient *dcc, int surfac
>      red_channel_client_pipe_add(RED_CHANNEL_CLIENT(dcc), &create->pipe_item);
>  }
>
> -static void red_worker_create_surface_item(RedWorker *worker, int surface_id)
> +static void red_worker_create_surface_item(DisplayChannel *display, int surface_id)
>  {
>      DisplayChannelClient *dcc;
>      RingItem *item, *next;
>
> -    FOREACH_DCC(worker->display_channel, item, next, dcc) {
> +    FOREACH_DCC(display, item, next, dcc) {
>          red_create_surface_item(dcc, surface_id);
>      }
>  }
>
>
> -static void red_worker_push_surface_image(RedWorker *worker, int surface_id)
> +static void red_worker_push_surface_image(DisplayChannel *display, int surface_id)
>  {
>      DisplayChannelClient *dcc;
>      RingItem *item, *next;
>
> -    FOREACH_DCC(worker->display_channel, item, next, dcc) {
> +    FOREACH_DCC(display, item, next, dcc) {
>          red_push_surface_image(dcc, surface_id);
>      }
>  }
>
> -static inline void red_create_surface(RedWorker *worker, uint32_t surface_id, uint32_t width,
> -                                      uint32_t height, int32_t stride, uint32_t format,
> -                                      void *line_0, int data_is_valid, int send_client)
> +static void red_create_surface(DisplayChannel *display, uint32_t surface_id, uint32_t width,
> +                               uint32_t height, int32_t stride, uint32_t format,
> +                               void *line_0, int data_is_valid, int send_client)
>  {
> -    RedSurface *surface = &worker->surfaces[surface_id];
> -    DisplayChannel*display = worker->display_channel;
> +    RedSurface *surface = &display->surfaces[surface_id];
>      uint32_t i;
>
>      spice_warn_if(surface->context.canvas);
> @@ -7663,7 +7520,7 @@ static inline void red_create_surface(RedWorker *worker, uint32_t surface_id, ui
>      region_init(&surface->draw_dirty_region);
>      surface->refs = 1;
>      if (display->renderer != RED_RENDERER_INVALID) {
> -        surface->context.canvas = create_canvas_for_surface(worker, surface, display->renderer,
> +        surface->context.canvas = create_canvas_for_surface(display, surface, display->renderer,
>                                                              width, height, stride,
>                                                              surface->context.format, line_0);
>          if (!surface->context.canvas) {
> @@ -7671,24 +7528,24 @@ static inline void red_create_surface(RedWorker *worker, uint32_t surface_id, ui
>          }
>
>          if (send_client) {
> -            red_worker_create_surface_item(worker, surface_id);
> +            red_worker_create_surface_item(display, surface_id);
>              if (data_is_valid) {
> -                red_worker_push_surface_image(worker, surface_id);
> +                red_worker_push_surface_image(display, surface_id);
>              }
>          }
>          return;
>      }
>
>      for (i = 0; i < display->num_renderers; i++) {
> -        surface->context.canvas = create_canvas_for_surface(worker, surface, display->renderers[i],
> +        surface->context.canvas = create_canvas_for_surface(display, surface, display->renderers[i],
>                                                              width, height, stride,
>                                                              surface->context.format, line_0);
>          if (surface->context.canvas) { //no need canvas check
>              display->renderer = display->renderers[i];
>              if (send_client) {
> -                red_worker_create_surface_item(worker, surface_id);
> +                red_worker_create_surface_item(display, surface_id);
>                  if (data_is_valid) {
> -                    red_worker_push_surface_image(worker, surface_id);
> +                    red_worker_push_surface_image(display, surface_id);
>                  }
>              }
>              return;
> @@ -7835,8 +7692,7 @@ static int display_channel_client_wait_for_init(DisplayChannelClient *dcc)
>
>  static void on_new_display_channel_client(DisplayChannelClient *dcc)
>  {
> -    DisplayChannel *display_channel = DCC_TO_DC(dcc);
> -    RedWorker *worker = display_channel->common.worker;
> +    DisplayChannel *display = DCC_TO_DC(dcc);
>      RedChannelClient *rcc = RED_CHANNEL_CLIENT(dcc);
>
>      red_channel_client_push_set_ack(RED_CHANNEL_CLIENT(dcc));
> @@ -7849,8 +7705,8 @@ static void on_new_display_channel_client(DisplayChannelClient *dcc)
>          return;
>      }
>      red_channel_client_ack_zero_messages_window(RED_CHANNEL_CLIENT(dcc));
> -    if (worker->surfaces[0].context.canvas) {
> -        red_current_flush(worker, 0);
> +    if (display->surfaces[0].context.canvas) {
> +        red_current_flush(display, 0);
>          push_new_primary_surface(dcc);
>          red_push_surface_image(dcc, 0);
>          dcc_push_monitors_config(dcc);
> @@ -8584,7 +8440,7 @@ static void display_channel_release_item(RedChannelClient *rcc, PipeItem *item,
>      }
>  }
>
> -static void display_channel_create(RedWorker *worker, int migrate)
> +static void display_channel_create(RedWorker *worker, int migrate, uint32_t n_surfaces)
>  {
>      DisplayChannel *display_channel;
>      ChannelCbs cbs = {
> @@ -8626,12 +8482,15 @@ static void display_channel_create(RedWorker *worker, int migrate)
>      stat_compress_init(&display_channel->jpeg_alpha_stat, jpeg_alpha_stat_name);
>      stat_compress_init(&display_channel->lz4_stat, lz4_stat_name);
>
> +    display_channel->n_surfaces = n_surfaces;
>      display_channel->num_renderers = num_renderers;
>      memcpy(display_channel->renderers, renderers, sizeof(display_channel->renderers));
>      display_channel->renderer = RED_RENDERER_INVALID;
> -    image_cache_init(&display_channel->image_cache);
> +
>      ring_init(&display_channel->current_list);
> +    image_surface_init(display_channel);
>      drawables_init(display_channel);
> +    image_cache_init(&display_channel->image_cache);
>      stream_init(display_channel);
>  }
>
> @@ -8765,14 +8624,13 @@ static void red_connect_cursor(RedWorker *worker, RedClient *client, RedsStream
>
>      // TODO: why do we check for context.canvas? defer this to after display cc is connected
>      // and test it's canvas? this is just a test to see if there is an active renderer?
> -    if (worker->surfaces[0].context.canvas)
> +    if (display_channel_surface_has_canvas(worker->display_channel, 0))
>          cursor_channel_init(channel, ccc);
>  }
>
>  static void surface_dirty_region_to_rects(RedSurface *surface,
>                                            QXLRect *qxl_dirty_rects,
> -                                          uint32_t num_dirty_rects,
> -                                          int clear_dirty_region)
> +                                          uint32_t num_dirty_rects)
>  {
>      QRegion *surface_dirty_region;
>      SpiceRect *dirty_rects;
> @@ -8781,9 +8639,6 @@ static void surface_dirty_region_to_rects(RedSurface *surface,
>      surface_dirty_region = &surface->draw_dirty_region;
>      dirty_rects = spice_new0(SpiceRect, num_dirty_rects);
>      region_ret_rects(surface_dirty_region, dirty_rects, num_dirty_rects);
> -    if (clear_dirty_region) {
> -        region_clear(surface_dirty_region);
> -    }
>      for (i = 0; i < num_dirty_rects; i++) {
>          qxl_dirty_rects[i].top    = dirty_rects[i].top;
>          qxl_dirty_rects[i].left   = dirty_rects[i].left;
> @@ -8793,67 +8648,60 @@ static void surface_dirty_region_to_rects(RedSurface *surface,
>      free(dirty_rects);
>  }
>
> -static void handle_dev_update_async(void *opaque, void *payload)
> +void display_channel_update(DisplayChannel *display,
> +                            uint32_t surface_id, const QXLRect *area, uint32_t clear_dirty,
> +                            QXLRect **qxl_dirty_rects, uint32_t *num_dirty_rects)
>  {
> -    RedWorker *worker = opaque;
> -    RedWorkerMessageUpdateAsync *msg = payload;
>      SpiceRect rect;
> -    QXLRect *qxl_dirty_rects;
> -    uint32_t num_dirty_rects;
>      RedSurface *surface;
> -    uint32_t surface_id = msg->surface_id;
> -    QXLRect qxl_area = msg->qxl_area;
> -    uint32_t clear_dirty_region = msg->clear_dirty_region;
>
> -    red_get_rect_ptr(&rect, &qxl_area);
> -    flush_display_commands(worker);
> +    spice_return_if_fail(validate_surface(display, surface_id));
>
> -    spice_assert(worker->running);
> +    red_get_rect_ptr(&rect, area);
> +    red_update_area(display, &rect, surface_id);
>
> -    VALIDATE_SURFACE_RET(worker, surface_id);
> -    red_update_area(worker, &rect, surface_id);
> -    if (!worker->qxl->st->qif->update_area_complete) {
> -        return;
> -    }
> -    surface = &worker->surfaces[surface_id];
> -    num_dirty_rects = pixman_region32_n_rects(&surface->draw_dirty_region);
> -    if (num_dirty_rects == 0) {
> -        return;
> +    surface = &display->surfaces[surface_id];
> +    if (!*qxl_dirty_rects) {
> +        *num_dirty_rects = pixman_region32_n_rects(&surface->draw_dirty_region);
> +        *qxl_dirty_rects = spice_new0(QXLRect, *num_dirty_rects);
>      }
> -    qxl_dirty_rects = spice_new0(QXLRect, num_dirty_rects);
> -    surface_dirty_region_to_rects(surface, qxl_dirty_rects, num_dirty_rects,
> -                                  clear_dirty_region);
> -    worker->qxl->st->qif->update_area_complete(worker->qxl, surface_id,
> -                                          qxl_dirty_rects, num_dirty_rects);
> -    free(qxl_dirty_rects);
> +
> +    surface_dirty_region_to_rects(surface, *qxl_dirty_rects, *num_dirty_rects);
> +    if (clear_dirty)
> +        region_clear(&surface->draw_dirty_region);
>  }
>
> -static void handle_dev_update(void *opaque, void *payload)
> +static void handle_dev_update_async(void *opaque, void *payload)
>  {
>      RedWorker *worker = opaque;
> -    RedWorkerMessageUpdate *msg = payload;
> -    SpiceRect *rect;
> -    RedSurface *surface;
> -    uint32_t surface_id = msg->surface_id;
> -    const QXLRect *qxl_area = msg->qxl_area;
> -    uint32_t num_dirty_rects = msg->num_dirty_rects;
> -    QXLRect *qxl_dirty_rects = msg->qxl_dirty_rects;
> -    uint32_t clear_dirty_region = msg->clear_dirty_region;
> +    RedWorkerMessageUpdateAsync *msg = payload;
> +    QXLRect *qxl_dirty_rects = NULL;
> +    uint32_t num_dirty_rects = 0;
>
> -    VALIDATE_SURFACE_RET(worker, surface_id);
> +    spice_return_if_fail(worker->running);
> +    spice_return_if_fail(worker->qxl->st->qif->update_area_complete);
>
> -    rect = spice_new0(SpiceRect, 1);
> -    surface = &worker->surfaces[surface_id];
> -    red_get_rect_ptr(rect, qxl_area);
>      flush_display_commands(worker);
> +    display_channel_update(worker->display_channel,
> +                           msg->surface_id, &msg->qxl_area, msg->clear_dirty_region,
> +                           &qxl_dirty_rects, &num_dirty_rects);
>
> -    spice_assert(worker->running);
> +    worker->qxl->st->qif->update_area_complete(worker->qxl, msg->surface_id,
> +                                                qxl_dirty_rects, num_dirty_rects);
> +    free(qxl_dirty_rects);
> +}
> +
> +static void handle_dev_update(void *opaque, void *payload)
> +{
> +    RedWorker *worker = opaque;
> +    RedWorkerMessageUpdate *msg = payload;
>
> -    red_update_area(worker, rect, surface_id);
> -    free(rect);
> +    spice_return_if_fail(worker->running);
>
> -    surface_dirty_region_to_rects(surface, qxl_dirty_rects, num_dirty_rects,
> -                                  clear_dirty_region);
> +    flush_display_commands(worker);
> +    display_channel_update(worker->display_channel,
> +                           msg->surface_id, msg->qxl_area, msg->clear_dirty_region,
> +                           &msg->qxl_dirty_rects, &msg->num_dirty_rects);
>  }
>
>  static void handle_dev_del_memslot(void *opaque, void *payload)
> @@ -8866,32 +8714,18 @@ static void handle_dev_del_memslot(void *opaque, void *payload)
>      red_memslot_info_del_slot(&worker->mem_slots, slot_group_id, slot_id);
>  }
>
> -/* TODO: destroy_surface_wait, dev_destroy_surface_wait - confusing. one asserts
> - * surface_id == 0, maybe move the assert upward and merge the two functions? */
> -static inline void destroy_surface_wait(RedWorker *worker, int surface_id)
> +void display_channel_destroy_surface_wait(DisplayChannel *display, int surface_id)
>  {
> -    VALIDATE_SURFACE_RET(worker, surface_id);
> -    if (!worker->surfaces[surface_id].context.canvas) {
> +    VALIDATE_SURFACE_RET(display, surface_id);
> +    if (!display->surfaces[surface_id].context.canvas)
>          return;
> -    }
>
> -    red_handle_depends_on_target_surface(worker, surface_id);
> -    /* note that red_handle_depends_on_target_surface must be called before red_current_clear.
> +    red_handle_depends_on_target_surface(display, surface_id);
> +    /* note that red_handle_depends_on_target_surface must be called before current_clear.
>         otherwise "current" will hold items that other drawables may depend on, and then
> -       red_current_clear will remove them from the pipe. */
> -    red_current_clear(worker, surface_id);
> -    red_clear_surface_drawables_from_pipes(worker, surface_id, TRUE);
> -}
> -
> -static void dev_destroy_surface_wait(RedWorker *worker, uint32_t surface_id)
> -{
> -    spice_assert(surface_id == 0);
> -
> -    flush_all_qxl_commands(worker);
> -
> -    if (worker->surfaces[0].context.canvas) {
> -        destroy_surface_wait(worker, 0);
> -    }
> +       current_clear will remove them from the pipe. */
> +    current_clear(display, surface_id);
> +    red_clear_surface_drawables_from_pipes(display, surface_id, TRUE);
>  }
>
>  static void handle_dev_destroy_surface_wait(void *opaque, void *payload)
> @@ -8899,48 +8733,47 @@ static void handle_dev_destroy_surface_wait(void *opaque, void *payload)
>      RedWorkerMessageDestroySurfaceWait *msg = payload;
>      RedWorker *worker = opaque;
>
> -    dev_destroy_surface_wait(worker, msg->surface_id);
> +    spice_return_if_fail(msg->surface_id == 0);
> +
> +    flush_all_qxl_commands(worker);
> +    display_channel_destroy_surface_wait(worker->display_channel, msg->surface_id);
>  }
>
>  /* called upon device reset */
>
>  /* TODO: split me*/
> -static inline void dev_destroy_surfaces(RedWorker *worker)
> +void display_channel_destroy_surfaces(DisplayChannel *display)
>  {
> -    DisplayChannel *display = worker->display_channel;
>      int i;
>
>      spice_debug(NULL);
> -    flush_all_qxl_commands(worker);
>      //to handle better
>      for (i = 0; i < NUM_SURFACES; ++i) {
> -        if (worker->surfaces[i].context.canvas) {
> -            destroy_surface_wait(worker, i);
> -            if (worker->surfaces[i].context.canvas) {
> -                red_surface_unref(worker, i);
> +        if (display->surfaces[i].context.canvas) {
> +            display_channel_destroy_surface_wait(display, i);
> +            if (display->surfaces[i].context.canvas) {
> +                display_channel_surface_unref(display, i);
>              }
> -            spice_assert(!worker->surfaces[i].context.canvas);
> +            spice_assert(!display->surfaces[i].context.canvas);
>          }
>      }
> -    spice_assert(ring_is_empty(&display->streams));
> +    spice_warn_if_fail(ring_is_empty(&display->streams));
>
> -    if (display_is_connected(worker)) {
> -        red_channel_pipes_add_type(RED_CHANNEL(worker->display_channel),
> -                                   PIPE_ITEM_TYPE_INVAL_PALETTE_CACHE);
> -        red_pipes_add_verb(RED_CHANNEL(worker->display_channel),
> -                           SPICE_MSG_DISPLAY_STREAM_DESTROY_ALL);
> +    if (red_channel_is_connected(RED_CHANNEL(display))) {
> +        red_channel_pipes_add_type(RED_CHANNEL(display), PIPE_ITEM_TYPE_INVAL_PALETTE_CACHE);
> +        red_pipes_add_verb(RED_CHANNEL(display), SPICE_MSG_DISPLAY_STREAM_DESTROY_ALL);
>      }
>
> -    red_display_clear_glz_drawables(worker->display_channel);
> -
> -    cursor_channel_reset(worker->cursor_channel);
> +    red_display_clear_glz_drawables(display);
>  }
>
>  static void handle_dev_destroy_surfaces(void *opaque, void *payload)
>  {
>      RedWorker *worker = opaque;
>
> -    dev_destroy_surfaces(worker);
> +    flush_all_qxl_commands(worker);
> +    display_channel_destroy_surfaces(worker->display_channel);
> +    cursor_channel_reset(worker->cursor_channel);
>  }
>
>  static void display_update_monitors_config(DisplayChannel *display,
> @@ -8965,13 +8798,12 @@ static void red_worker_push_monitors_config(RedWorker *worker)
>      }
>  }
>
> -static void set_monitors_config_to_primary(RedWorker *worker)
> +static void set_monitors_config_to_primary(DisplayChannel *display)
>  {
> -    DrawContext *context = &worker->surfaces[0].context;
> -    DisplayChannel *display = worker->display_channel;
> +    DrawContext *context = &display->surfaces[0].context;
>      QXLHead head = { 0, };
>
> -    spice_return_if_fail(worker->surfaces[0].context.canvas);
> +    spice_return_if_fail(display->surfaces[0].context.canvas);
>
>      if (display->monitors_config)
>          monitors_config_unref(display->monitors_config);
> @@ -8984,6 +8816,7 @@ static void set_monitors_config_to_primary(RedWorker *worker)
>  static void dev_create_primary_surface(RedWorker *worker, uint32_t surface_id,
>                                         QXLDevSurfaceCreate surface)
>  {
> +    DisplayChannel *display = worker->display_channel;
>      uint8_t *line_0;
>      int error;
>
> @@ -9008,9 +8841,9 @@ static void dev_create_primary_surface(RedWorker *worker, uint32_t surface_id,
>          line_0 -= (int32_t)(surface.stride * (surface.height -1));
>      }
>
> -    red_create_surface(worker, 0, surface.width, surface.height, surface.stride, surface.format,
> +    red_create_surface(display, 0, surface.width, surface.height, surface.stride, surface.format,
>                         line_0, surface.flags & QXL_SURF_FLAG_KEEP_DATA, TRUE);
> -    set_monitors_config_to_primary(worker);
> +    set_monitors_config_to_primary(display);
>
>      if (display_is_connected(worker) && !worker->display_channel->common.during_target_migrate) {
>          /* guest created primary, so it will (hopefully) send a monitors_config
> @@ -9034,25 +8867,25 @@ static void handle_dev_create_primary_surface(void *opaque, void *payload)
>      dev_create_primary_surface(worker, msg->surface_id, msg->surface);
>  }
>
> -static void dev_destroy_primary_surface(RedWorker *worker, uint32_t surface_id)
> +static void destroy_primary_surface(RedWorker *worker, uint32_t surface_id)
>  {
>      DisplayChannel *display = worker->display_channel;
>
> -    VALIDATE_SURFACE_RET(worker, surface_id);
> +    VALIDATE_SURFACE_RET(display, surface_id);
>      spice_warn_if(surface_id != 0);
>
>      spice_debug(NULL);
> -    if (!worker->surfaces[surface_id].context.canvas) {
> +    if (!display->surfaces[surface_id].context.canvas) {
>          spice_warning("double destroy of primary surface");
>          return;
>      }
>
>      flush_all_qxl_commands(worker);
> -    dev_destroy_surface_wait(worker, 0);
> -    red_surface_unref(worker, 0);
> -    spice_warn_if_fail(ring_is_empty(&display->streams));
> +    display_channel_destroy_surface_wait(display, 0);
> +    display_channel_surface_unref(display, 0);
>
> -    spice_assert(!worker->surfaces[surface_id].context.canvas);
> +    spice_warn_if_fail(ring_is_empty(&display->streams));
> +    spice_warn_if_fail(!display->surfaces[surface_id].context.canvas);
>
>      cursor_channel_reset(worker->cursor_channel);
>  }
> @@ -9063,7 +8896,7 @@ static void handle_dev_destroy_primary_surface(void *opaque, void *payload)
>      RedWorker *worker = opaque;
>      uint32_t surface_id = msg->surface_id;
>
> -    dev_destroy_primary_surface(worker, surface_id);
> +    destroy_primary_surface(worker, surface_id);
>  }
>
>  static void handle_dev_destroy_primary_surface_async(void *opaque, void *payload)
> @@ -9072,16 +8905,16 @@ static void handle_dev_destroy_primary_surface_async(void *opaque, void *payload
>      RedWorker *worker = opaque;
>      uint32_t surface_id = msg->surface_id;
>
> -    dev_destroy_primary_surface(worker, surface_id);
> +    destroy_primary_surface(worker, surface_id);
>  }
>
> -static void flush_all_surfaces(RedWorker *worker)
> +static void flush_all_surfaces(DisplayChannel *display)
>  {
>      int x;
>
>      for (x = 0; x < NUM_SURFACES; ++x) {
> -        if (worker->surfaces[x].context.canvas) {
> -            red_current_flush(worker, x);
> +        if (display->surfaces[x].context.canvas) {
> +            red_current_flush(display, x);
>          }
>      }
>  }
> @@ -9089,7 +8922,7 @@ static void flush_all_surfaces(RedWorker *worker)
>  static void dev_flush_surfaces(RedWorker *worker)
>  {
>      flush_all_qxl_commands(worker);
> -    flush_all_surfaces(worker);
> +    flush_all_surfaces(worker->display_channel);
>  }
>
>  static void handle_dev_flush_surfaces_async(void *opaque, void *payload)
> @@ -9107,7 +8940,7 @@ static void handle_dev_stop(void *opaque, void *payload)
>      spice_assert(worker->running);
>      worker->running = FALSE;
>      red_display_clear_glz_drawables(worker->display_channel);
> -    flush_all_surfaces(worker);
> +    flush_all_surfaces(worker->display_channel);
>      /* todo: when the waiting is expected to take long (slow connection and
>       * overloaded pipe), don't wait, and in case of migration,
>       * purge the pipe, send destroy_all_surfaces
> @@ -9236,14 +9069,16 @@ static void handle_dev_destroy_surface_wait_async(void *opaque, void *payload)
>      RedWorkerMessageDestroySurfaceWaitAsync *msg = payload;
>      RedWorker *worker = opaque;
>
> -    dev_destroy_surface_wait(worker, msg->surface_id);
> +    display_channel_destroy_surface_wait(worker->display_channel, msg->surface_id);
>  }
>
>  static void handle_dev_destroy_surfaces_async(void *opaque, void *payload)
>  {
>      RedWorker *worker = opaque;
>
> -    dev_destroy_surfaces(worker);
> +    flush_all_qxl_commands(worker);
> +    display_channel_destroy_surfaces(worker->display_channel);
> +    cursor_channel_reset(worker->cursor_channel);
>  }
>
>  static void handle_dev_create_primary_surface_async(void *opaque, void *payload)
> @@ -9757,7 +9592,6 @@ RedWorker* red_worker_new(QXLInstance *qxl, RedDispatcher *red_dispatcher)
>      worker->jpeg_state = jpeg_state;
>      worker->zlib_glz_state = zlib_glz_state;
>      worker->driver_cap_monitors_config = 0;
> -    image_surface_init(worker);
>      stat_init(&worker->add_stat, add_stat_name);
>      stat_init(&worker->exclude_stat, exclude_stat_name);
>      stat_init(&worker->__exclude_stat, __exclude_stat_name);
> @@ -9786,7 +9620,6 @@ RedWorker* red_worker_new(QXLInstance *qxl, RedDispatcher *red_dispatcher)
>                            init_info.internal_groupslot_id);
>
>      spice_warn_if(init_info.n_surfaces > NUM_SURFACES);
> -    worker->n_surfaces = init_info.n_surfaces;
>
>      red_init_quic(worker);
>      red_init_lz(worker);
> @@ -9799,7 +9632,7 @@ RedWorker* red_worker_new(QXLInstance *qxl, RedDispatcher *red_dispatcher)
>
>      worker->cursor_channel = cursor_channel_new(worker);
>      // TODO: handle seemless migration. Temp, setting migrate to FALSE
> -    display_channel_create(worker, FALSE);
> +    display_channel_create(worker, FALSE, init_info.n_surfaces);
>
>      return worker;
>  }
> diff --git a/server/red_worker.h b/server/red_worker.h
> index 2995b8f..3604dfd 100644
> --- a/server/red_worker.h
> +++ b/server/red_worker.h
> @@ -22,6 +22,7 @@
>  #include <errno.h>
>  #include "red_common.h"
>  #include "red_dispatcher.h"
> +#include "red_parse_qxl.h"
>
>  typedef struct RedWorker RedWorker;
>
> @@ -108,6 +109,7 @@ bool       red_worker_run(RedWorker *worker);
>  QXLInstance* red_worker_get_qxl(RedWorker *worker);
>  RedChannel* red_worker_get_cursor_channel(RedWorker *worker);
>  RedChannel* red_worker_get_display_channel(RedWorker *worker);
> +void red_worker_print_stats(RedWorker *worker);
>
>  RedChannel *red_worker_new_channel(RedWorker *worker, int size,
>                                     const char *name,
> --
> 2.4.3
>
> _______________________________________________
> Spice-devel mailing list
> Spice-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/spice-devel


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