[Spice-devel] [PATCH 14/15] worker: tried to move dpi functions to display channel, fail

Jonathon Jongsma jjongsma at redhat.com
Tue Nov 3 12:16:01 PST 2015


On Tue, 2015-11-03 at 17:54 +0100, Fabiano FidĂȘncio wrote:

> On Tue, Nov 3, 2015 at 11:20 AM, Frediano Ziglio <fziglio at redhat.com>
> wrote:

> > From: Marc-André Lureau <marcandre.lureau at gmail.com>
> 
> Why did it fail? What's the main issue? Was it achieved in some other
> patch during the rebase?
> I didn't go through the code because I didn't even understand the
> main
> point of this patch.
> 


It appears that this is an intermediate step in a larger refactoring.
I think marc-andre intended to move drawable_pipe_item_new/ref/unref
to display-channel.c, but that drawable_pipe_item_unref() was not
easily movable because it is intertwined with RedWorker (for example,
it calls red_worker_drawable_unref()).  In a later commit, these
functions are all moved into dcc.[ch] (rather than
display-channel.[ch]) as part of a larger refactoring. I'm ok with an
intermediate commit like this.

But I think this patch does too much. Comments below. I'll send a
split patch as followup.


> > 
> > ---
> >  server/display-channel.h |  74 ++++++++++++++++++++
> >  server/pixmap-cache.h    |   2 -
> >  server/red_worker.c      | 178 +++++++++++++++++++----------------
> > ------------
> >  server/tree.h            |  34 ---------
> >  4 files changed, 147 insertions(+), 141 deletions(-)
> > 
> > diff --git a/server/display-channel.h b/server/display-channel.h
> > index 5d2eee5..d8728a5 100644
> > --- a/server/display-channel.h
> > +++ b/server/display-channel.h
> > @@ -53,8 +53,10 @@
> >  #include "spice_bitmap_utils.h"
> >  #include "spice_image_cache.h"
> >  #include "utils.h"
> > +#include "tree.h"
> > 
> >  typedef struct DisplayChannel DisplayChannel;
> > +typedef struct DisplayChannelClient DisplayChannelClient;
> > 
> >  typedef struct Drawable Drawable;
> > 
> > @@ -143,6 +145,40 @@ struct Stream {
> >      uint32_t input_fps;
> >  };
> > 
> > +typedef struct DependItem {
> > +    Drawable *drawable;
> > +    RingItem ring_item;
> > +} DependItem;
> > +
> > +struct Drawable {
> > +    uint8_t refs;
> > +    RingItem surface_list_link;
> > +    RingItem list_link;
> > +    DrawItem tree_item;
> > +    Ring pipes;
> > +    PipeItem *pipe_item_rest;
> > +    uint32_t size_pipe_item_rest;
> > +    RedDrawable *red_drawable;
> > +
> > +    Ring glz_ring;
> > +
> > +    red_time_t creation_time;
> > +    int frames_count;
> > +    int gradual_frames_count;
> > +    int last_gradual_frame;
> > +    Stream *stream;
> > +    Stream *sized_stream;
> > +    int streamable;
> > +    BitmapGradualType copy_bitmap_graduality;
> > +    uint32_t group_id;
> > +    DependItem depend_items[3];
> > +
> > +    int surface_id;
> > +    int surfaces_dest[3];
> > +
> > +    uint32_t process_commands_generation;
> > +};
> > +
> >  #define STREAM_STATS
> >  #ifdef STREAM_STATS
> >  typedef struct StreamStats {
> > @@ -228,6 +264,30 @@ struct DisplayChannelClient {
> >      uint64_t streams_max_bit_rate;
> >  };
> > 
> > +#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 RCC_TO_DCC(rcc) SPICE_CONTAINEROF((rcc),
> > DisplayChannelClient, common.base)
> > +
> > +
> > +enum {
> > +    PIPE_ITEM_TYPE_DRAW = PIPE_ITEM_TYPE_COMMON_LAST,
> > +    PIPE_ITEM_TYPE_IMAGE,
> > +    PIPE_ITEM_TYPE_STREAM_CREATE,
> > +    PIPE_ITEM_TYPE_STREAM_CLIP,
> > +    PIPE_ITEM_TYPE_STREAM_DESTROY,
> > +    PIPE_ITEM_TYPE_UPGRADE,
> > +    PIPE_ITEM_TYPE_MIGRATE_DATA,
> > +    PIPE_ITEM_TYPE_PIXMAP_SYNC,
> > +    PIPE_ITEM_TYPE_PIXMAP_RESET,
> > +    PIPE_ITEM_TYPE_INVAL_PALETTE_CACHE,
> > +    PIPE_ITEM_TYPE_CREATE_SURFACE,
> > +    PIPE_ITEM_TYPE_DESTROY_SURFACE,
> > +    PIPE_ITEM_TYPE_MONITORS_CONFIG,
> > +    PIPE_ITEM_TYPE_STREAM_ACTIVATE_REPORT,
> > +};
> > +
> >  DisplayChannelClient*      dcc_new                                
> >    (DisplayChannel *display,
> >                                                                    
> >     RedClient *client,
> >                                                                    
> >     RedsStream *stream,
> > @@ -237,4 +297,18 @@ DisplayChannelClient*      dcc_new            
> >                        (DisplayCha
> >                                                                    
> >     uint32_t *caps,
> >                                                                    
> >     int num_caps);
> > 
> > +typedef struct DrawablePipeItem {
> > +    RingItem base;  /* link for a list of pipe items held by
> > Drawable */
> > +    PipeItem dpi_pipe_item; /* link for the client's pipe itself
> > */
> > +    Drawable *drawable;
> > +    DisplayChannelClient *dcc;
> > +    uint8_t refs;
> > +} DrawablePipeItem;
> > +
> > +DrawablePipeItem*          drawable_pipe_item_new                 
> >    (DisplayChannelClient *dcc,
> > +                                                                  
> >     Drawable *drawable);
> > +void                       drawable_pipe_item_unref               
> >    (DrawablePipeItem *dpi);
> > +DrawablePipeItem*          drawable_pipe_item_ref                 
> >    (DrawablePipeItem *dpi);
> > +
> > +
> >  #endif /* DISPLAY_CHANNEL_H_ */
> > diff --git a/server/pixmap-cache.h b/server/pixmap-cache.h
> > index 336c9ae..a4f6fea 100644
> > --- a/server/pixmap-cache.h
> > +++ b/server/pixmap-cache.h
> > @@ -28,8 +28,6 @@
> >  #define BITS_CACHE_HASH_MASK (BITS_CACHE_HASH_SIZE - 1)
> >  #define BITS_CACHE_HASH_KEY(id) ((id) & BITS_CACHE_HASH_MASK)
> > 
> > -typedef struct DisplayChannelClient DisplayChannelClient;
> > -
> >  typedef struct PixmapCache PixmapCache;
> >  typedef struct NewCacheItem NewCacheItem;

this change seems unrelated. I'd prefer to split it out.


> > 
> > diff --git a/server/red_worker.c b/server/red_worker.c
> > index e9ef821..e23c460 100644
> > --- a/server/red_worker.c
> > +++ b/server/red_worker.c
> > @@ -229,23 +229,6 @@ struct SpiceWatch {
> >      void *watch_func_opaque;
> >  };
> > 
> > -enum {
> > -    PIPE_ITEM_TYPE_DRAW = PIPE_ITEM_TYPE_COMMON_LAST,
> > -    PIPE_ITEM_TYPE_IMAGE,
> > -    PIPE_ITEM_TYPE_STREAM_CREATE,
> > -    PIPE_ITEM_TYPE_STREAM_CLIP,
> > -    PIPE_ITEM_TYPE_STREAM_DESTROY,
> > -    PIPE_ITEM_TYPE_UPGRADE,
> > -    PIPE_ITEM_TYPE_MIGRATE_DATA,
> > -    PIPE_ITEM_TYPE_PIXMAP_SYNC,
> > -    PIPE_ITEM_TYPE_PIXMAP_RESET,
> > -    PIPE_ITEM_TYPE_INVAL_PALETTE_CACHE,
> > -    PIPE_ITEM_TYPE_CREATE_SURFACE,
> > -    PIPE_ITEM_TYPE_DESTROY_SURFACE,
> > -    PIPE_ITEM_TYPE_MONITORS_CONFIG,
> > -    PIPE_ITEM_TYPE_STREAM_ACTIVATE_REPORT,
> > -};
> > -
> >  #define MAX_LZ_ENCODERS MAX_CACHE_CLIENTS
> > 
> >  typedef struct SurfaceCreateItem {
> > @@ -403,14 +386,6 @@ struct DisplayChannel {
> >  #endif
> >  };
> > 
> > -typedef struct DrawablePipeItem {
> > -    RingItem base;  /* link for a list of pipe items held by
> > Drawable */
> > -    PipeItem dpi_pipe_item; /* link for the client's pipe itself
> > */
> > -    Drawable *drawable;
> > -    DisplayChannelClient *dcc;
> > -    uint8_t refs;
> > -} DrawablePipeItem;
> > -
> >  typedef struct _Drawable _Drawable;
> >  struct _Drawable {
> >      union {
> > @@ -589,7 +564,7 @@ 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,
> >                                   Drawable *last);
> > -static inline void release_drawable(RedWorker *worker, Drawable
> > *item);
> > +static void red_worker_drawable_unref(RedWorker *worker, Drawable
> > *drawable);
> >  static void red_display_release_stream(RedWorker *worker,
> > StreamAgent *agent);
> >  static inline void red_detach_stream(RedWorker *worker, Stream
> > *stream, int detach_sized);
> >  static void red_stop_stream(RedWorker *worker, Stream *stream);
> > @@ -640,20 +615,48 @@ static void
> > red_push_monitors_config(DisplayChannelClient *dcc);
> >      SAFE_FOREACH(link, next, drawable, &(drawable)->glz_ring, glz,
> > LINK_TO_GLZ(link))
> > 
> > 
> > -#define DCC_TO_WORKER(dcc) \
> > -    (SPICE_CONTAINEROF((dcc)->common.base.channel, CommonChannel,
> > base)->worker)
> > -
> >  // TODO: replace with DCC_FOREACH when it is introduced
> >  #define WORKER_TO_DCC(worker) \
> >      (worker->display_channel ? SPICE_CONTAINEROF(worker
> > ->display_channel->common.base.rcc,\
> >                         DisplayChannelClient, common.base) : NULL)
> > 
> > -#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)
> > -#define RCC_TO_CCC(rcc) SPICE_CONTAINEROF((rcc),
> > CursorChannelClient, common.base)
> > +/* fixme: move to display channel */
> > +DrawablePipeItem *drawable_pipe_item_new(DisplayChannelClient
> > *dcc,
> > +                                         Drawable *drawable)
> > +{
> > +    DrawablePipeItem *dpi;
> > 
> > +    dpi = spice_malloc0(sizeof(*dpi));
> > +    dpi->drawable = drawable;
> > +    dpi->dcc = dcc;
> > +    ring_item_init(&dpi->base);
> > +    ring_add(&drawable->pipes, &dpi->base);
> > +    red_channel_pipe_item_init(dcc->common.base.channel, &dpi
> > ->dpi_pipe_item, PIPE_ITEM_TYPE_DRAW);
> > +    dpi->refs++;
> > +    drawable->refs++;
> > +    return dpi;
> > +}
> > +
> > +DrawablePipeItem *drawable_pipe_item_ref(DrawablePipeItem *dpi)
> > +{
> > +    dpi->refs++;
> > +    return dpi;
> > +}
> > +
> > +void drawable_pipe_item_unref(DrawablePipeItem *dpi)
> > +{
> > +    RedWorker *worker = DCC_TO_WORKER(dpi->dcc);
> > +
> > +    if (--dpi->refs) {
> > +        return;
> > +    }
> > +
> > +    spice_warn_if_fail(!ring_item_is_linked(&dpi
> > ->dpi_pipe_item.link));
> > +    spice_warn_if_fail(!ring_item_is_linked(&dpi->base));
> > +    red_worker_drawable_unref(worker, dpi->drawable);
> > +    free(dpi);
> > +}
> > 
> > 
> >  #ifdef COMPRESS_STAT
> > @@ -865,49 +868,12 @@ static int cursor_is_connected(RedWorker
> > *worker)
> >          red_channel_is_connected(RED_CHANNEL(worker
> > ->cursor_channel));
> >  }
> > 
> > -static void put_drawable_pipe_item(DrawablePipeItem *dpi)
> > -{
> > -    RedWorker *worker = DCC_TO_WORKER(dpi->dcc);
> > -
> > -    if (--dpi->refs) {
> > -        return;
> > -    }
> > -
> > -    spice_assert(!ring_item_is_linked(&dpi->dpi_pipe_item.link));
> > -    spice_assert(!ring_item_is_linked(&dpi->base));
> > -    release_drawable(worker, dpi->drawable);
> > -    free(dpi);
> > -}
> > -
> > -static inline DrawablePipeItem
> > *get_drawable_pipe_item(DisplayChannelClient *dcc,
> > -                                                       Drawable
> > *drawable)
> > -{
> > -    DrawablePipeItem *dpi;
> > -
> > -    dpi = spice_malloc0(sizeof(*dpi));
> > -    dpi->drawable = drawable;
> > -    dpi->dcc = dcc;
> > -    ring_item_init(&dpi->base);
> > -    ring_add(&drawable->pipes, &dpi->base);
> > -    red_channel_pipe_item_init(dcc->common.base.channel, &dpi
> > ->dpi_pipe_item, PIPE_ITEM_TYPE_DRAW);
> > -    dpi->refs++;
> > -    drawable->refs++;
> > -    return dpi;
> > -}
> > -
> > -static inline DrawablePipeItem
> > *ref_drawable_pipe_item(DrawablePipeItem *dpi)
> > -{
> > -    spice_assert(dpi->drawable);
> > -    dpi->refs++;
> > -    return dpi;
> > -}
> > -
> >  static inline void red_pipe_add_drawable(DisplayChannelClient
> > *dcc, Drawable *drawable)
> >  {
> >      DrawablePipeItem *dpi;
> > 
> >      red_handle_drawable_surfaces_client_synced(dcc, drawable);
> > -    dpi = get_drawable_pipe_item(dcc, drawable);
> > +    dpi = drawable_pipe_item_new(dcc, drawable);
> >      red_channel_client_pipe_add(&dcc->common.base, &dpi
> > ->dpi_pipe_item);
> >  }
> > 
> > @@ -930,7 +896,7 @@ static inline void
> > red_pipe_add_drawable_to_tail(DisplayChannelClient *dcc, Draw
> >          return;
> >      }
> >      red_handle_drawable_surfaces_client_synced(dcc, drawable);
> > -    dpi = get_drawable_pipe_item(dcc, drawable);
> > +    dpi = drawable_pipe_item_new(dcc, drawable);
> >      red_channel_client_pipe_add_tail(&dcc->common.base, &dpi
> > ->dpi_pipe_item);
> >  }
> > 
> > @@ -946,7 +912,7 @@ static inline void
> > red_pipes_add_drawable_after(RedWorker *worker,
> >          num_other_linked++;
> >          dcc = dpi_pos_after->dcc;
> >          red_handle_drawable_surfaces_client_synced(dcc, drawable);
> > -        dpi = get_drawable_pipe_item(dcc, drawable);
> > +        dpi = drawable_pipe_item_new(dcc, drawable);
> >          red_channel_client_pipe_add_after(&dcc->common.base, &dpi
> > ->dpi_pipe_item,
> >                                            &dpi_pos_after
> > ->dpi_pipe_item);
> >      }
> > @@ -1025,11 +991,12 @@ static void release_image_item(ImageItem
> > *item)
> > 
> >  static void release_upgrade_item(RedWorker* worker, UpgradeItem
> > *item)
> >  {
> > -    if (!--item->refs) {
> > -        release_drawable(worker, item->drawable);
> > -        free(item->rects);
> > -        free(item);
> > -    }
> > +    if (--item->refs)
> > +        return;
> > +
> > +    red_worker_drawable_unref(worker, item->drawable);
> > +    free(item->rects);
> > +    free(item);


I would also split out this style change.


> >  }
> > 
> >  static uint8_t *common_alloc_recv_buf(RedChannelClient *rcc,
> > uint16_t type, uint32_t size)
> > @@ -1222,31 +1189,32 @@ static void
> > remove_drawable_dependencies(RedWorker *worker, Drawable *drawable)
> >      }
> >  }
> > 
> > -static inline void release_drawable(RedWorker *worker, Drawable
> > *drawable)
> > +static void red_worker_drawable_unref(RedWorker *worker, Drawable
> > *drawable)
> >  {
> >      RingItem *item, *next;
> > 
> > -    if (!--drawable->refs) {
> > -        spice_assert(!drawable->tree_item.shadow);
> > -        spice_assert(ring_is_empty(&drawable->pipes));
> > +    if (--drawable->refs)
> > +        return;
> > 
> > -        if (drawable->stream) {
> > -            red_detach_stream(worker, drawable->stream, TRUE);
> > -        }
> > -        region_destroy(&drawable->tree_item.base.rgn);
> > +    spice_return_if_fail(!drawable->tree_item.shadow);
> > +    spice_return_if_fail(ring_is_empty(&drawable->pipes));
> > +
> > +    if (drawable->stream) {
> > +        red_detach_stream(worker, drawable->stream, TRUE);
> > +    }
> > +    region_destroy(&drawable->tree_item.base.rgn);
> > 
> > -        remove_drawable_dependencies(worker, drawable);
> > -        red_dec_surfaces_drawable_dependencies(worker, drawable);
> > -        red_destroy_surface(worker, drawable->surface_id);
> > +    remove_drawable_dependencies(worker, drawable);
> > +    red_dec_surfaces_drawable_dependencies(worker, drawable);
> > +    red_destroy_surface(worker, drawable->surface_id);
> > 
> > -        RING_FOREACH_SAFE(item, next, &drawable->glz_ring) {
> > -            SPICE_CONTAINEROF(item, RedGlzDrawable, drawable_link)
> > ->drawable = NULL;
> > -            ring_remove(item);
> > -        }
> > -        put_red_drawable(worker, drawable->red_drawable, drawable
> > ->group_id);
> > -        free_drawable(worker, drawable);
> > -        worker->drawable_count--;
> > +    RING_FOREACH_SAFE(item, next, &drawable->glz_ring) {
> > +        SPICE_CONTAINEROF(item, RedGlzDrawable, drawable_link)
> > ->drawable = NULL;
> > +        ring_remove(item);
> >      }
> > +    put_red_drawable(worker, drawable->red_drawable, drawable
> > ->group_id);
> > +    free_drawable(worker, drawable);
> > +    worker->drawable_count--;


These are also only style changes (return early vs. put everything
inside an if statement). I'd split them out as well. I'm a little bit
more ambivalent about the function rename. I think it can go in this
patch even if it's not strictly necessary for the other changes.

> >  }
> > 
> >  static inline void remove_shadow(RedWorker *worker, DrawItem
> > *item)
> > @@ -1339,7 +1307,7 @@ static inline void
> > current_remove_drawable(RedWorker *worker, Drawable *item)
> >      ring_remove(&item->tree_item.base.siblings_link);
> >      ring_remove(&item->list_link);
> >      ring_remove(&item->surface_list_link);
> > -    release_drawable(worker, item);
> > +    red_worker_drawable_unref(worker, item);
> >      worker->current_size--;
> >  }
> > 
> > @@ -2747,7 +2715,7 @@ static inline int
> > red_current_add_equal(RedWorker *worker, DrawItem *item, TreeI
> >              red_pipes_add_drawable(worker, drawable);
> >          }
> >          red_pipes_remove_drawable(other_drawable);
> > -        release_drawable(worker, other_drawable);
> > +        red_worker_drawable_unref(worker, other_drawable);
> >          return TRUE;
> >      }
> > 
> > @@ -2790,7 +2758,7 @@ static inline int
> > red_current_add_equal(RedWorker *worker, DrawItem *item, TreeI
> >              /* not sending other_drawable where possible */
> >              red_pipes_remove_drawable(other_drawable);
> > 
> > -            release_drawable(worker, other_drawable);
> > +            red_worker_drawable_unref(worker, other_drawable);
> >              return TRUE;
> >          }
> >          break;
> > @@ -3466,7 +3434,7 @@ static gboolean red_process_draw(RedWorker
> > *worker, QXLCommandExt *ext_cmd)
> > 
> >  end:
> >      if (drawable != NULL)
> > -        release_drawable(worker, drawable);
> > +        red_worker_drawable_unref(worker, drawable);
> >      if (red_drawable != NULL)
> >          put_red_drawable(worker, red_drawable, ext_cmd->group_id);
> >      return success;
> > @@ -3858,7 +3826,7 @@ static void red_update_area_till(RedWorker
> > *worker, const SpiceRect *area, int s
> >             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);
> > -        release_drawable(worker, now);
> > +        red_worker_drawable_unref(worker, now);
> >      } while (now != surface_last);
> >      validate_area(worker, area, surface_id);
> >  }
> > @@ -3911,7 +3879,7 @@ static void red_update_area(RedWorker
> > *worker, const SpiceRect *area, int surfac
> >          current_remove_drawable(worker, now);
> >          container_cleanup(worker, container);
> >          red_draw_drawable(worker, now);
> > -        release_drawable(worker, now);
> > +        red_worker_drawable_unref(worker, now);
> >      } while (now != last);
> >      validate_area(worker, area, surface_id);
> >  }
> > @@ -9098,7 +9066,7 @@ static void
> > display_channel_hold_pipe_item(RedChannelClient *rcc, PipeItem
> > *item
> >      spice_assert(item);
> >      switch (item->type) {
> >      case PIPE_ITEM_TYPE_DRAW:
> > -        ref_drawable_pipe_item(SPICE_CONTAINEROF(item,
> > DrawablePipeItem, dpi_pipe_item));
> > +        drawable_pipe_item_ref(SPICE_CONTAINEROF(item,
> > DrawablePipeItem, dpi_pipe_item));
> >          break;
> >      case PIPE_ITEM_TYPE_STREAM_CLIP:
> >          ((StreamClipItem *)item)->refs++;
> > @@ -9121,7 +9089,7 @@ static void
> > display_channel_client_release_item_after_push(DisplayChannelClient
> > 
> >      switch (item->type) {
> >      case PIPE_ITEM_TYPE_DRAW:
> > -        put_drawable_pipe_item(SPICE_CONTAINEROF(item,
> > DrawablePipeItem, dpi_pipe_item));
> > +        drawable_pipe_item_unref(SPICE_CONTAINEROF(item,
> > DrawablePipeItem, dpi_pipe_item));
> >          break;
> >      case PIPE_ITEM_TYPE_STREAM_CLIP:
> >          red_display_release_stream_clip(worker, (StreamClipItem
> > *)item);
> > @@ -9158,7 +9126,7 @@ static void
> > display_channel_client_release_item_before_push(DisplayChannelClien
> > t
> >      case PIPE_ITEM_TYPE_DRAW: {
> >          DrawablePipeItem *dpi = SPICE_CONTAINEROF(item,
> > DrawablePipeItem, dpi_pipe_item);
> >          ring_remove(&dpi->base);
> > -        put_drawable_pipe_item(dpi);
> > +        drawable_pipe_item_unref(dpi);
> >          break;
> >      }
> >      case PIPE_ITEM_TYPE_STREAM_CREATE: {
> > diff --git a/server/tree.h b/server/tree.h
> > index 9ee6007..baba40a 100644
> > --- a/server/tree.h
> > +++ b/server/tree.h
> > @@ -73,40 +73,6 @@ struct DrawItem {
> >  #define IS_DRAW_ITEM(item) ((item)->type ==
> > TREE_ITEM_TYPE_DRAWABLE)
> >  #define DRAW_ITEM(item) ((DrawItem*)(item))
> > 
> > -typedef struct DependItem {
> > -    Drawable *drawable;
> > -    RingItem ring_item;
> > -} DependItem;
> > -
> > -struct Drawable {
> > -    uint8_t refs;
> > -    RingItem surface_list_link;
> > -    RingItem list_link;
> > -    DrawItem tree_item;
> > -    Ring pipes;
> > -    PipeItem *pipe_item_rest;
> > -    uint32_t size_pipe_item_rest;
> > -    RedDrawable *red_drawable;
> > -
> > -    Ring glz_ring;
> > -
> > -    red_time_t creation_time;
> > -    int frames_count;
> > -    int gradual_frames_count;
> > -    int last_gradual_frame;
> > -    Stream *stream;
> > -    Stream *sized_stream;
> > -    int streamable;
> > -    BitmapGradualType copy_bitmap_graduality;
> > -    uint32_t group_id;
> > -    DependItem depend_items[3];
> > -
> > -    int surface_id;
> > -    int surfaces_dest[3];
> > -
> > -    uint32_t process_commands_generation;
> > -};
> > -
> >  void       tree_item_dump                           (TreeItem
> > *item);
> >  Shadow*    shadow_new                               (DrawItem
> > *item, const SpicePoint *delta);
> >  Container* container_new                            (DrawItem
> > *item);
> > --
> > 2.4.3
> > 


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