[Spice-devel] [PATCH 05/22] display: make get_drawable symmetric to display_channel_drawable_unref

[Frediano Ziglio]

Make possible to safely call display_channel_drawable_unref straight
forward to get_drawable call.

Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
---
 server/display-channel.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/server/display-channel.c b/server/display-channel.c
index 809673b..0750de8 100644
--- a/server/display-channel.c
+++ b/server/display-channel.c
@@ -1117,7 +1117,16 @@ Drawable *display_channel_get_drawable(DisplayChannel *display, uint8_t effect,
     drawable->red_drawable = red_drawable_ref(red_drawable);
 
     drawable->surface_id = red_drawable->surface_id;
+    display->surfaces[drawable->surface_id].refs++;
+
     memcpy(drawable->surface_deps, red_drawable->surface_deps, sizeof(drawable->surface_deps));
+    /*
+        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(display, drawable);
 
     return drawable;
 }
@@ -1128,9 +1137,6 @@ void display_channel_add_drawable(DisplayChannel *display, Drawable *drawable)
     RedDrawable *red_drawable = drawable->red_drawable;
 
     red_drawable->mm_time = reds_get_mm_time();
-    surface_id = drawable->surface_id;
-
-    display->surfaces[surface_id].refs++;
 
     region_add(&drawable->tree_item.base.rgn, &red_drawable->bbox);
 
@@ -1143,14 +1149,6 @@ void display_channel_add_drawable(DisplayChannel *display, Drawable *drawable)
         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(display, drawable);
-
     if (region_is_empty(&drawable->tree_item.base.rgn)) {
         return;
     }
-- 
2.4.3