[gegl] buffer: only flush non-internal tile backends in dispose

[Ãyvind KolÃs <ok src gnome org>]

commit 6959dc15f198f9eee06fca85cfb565d3037da509
Author: Ãyvind KolÃs <pippin gimp org>
Date:   Thu Mar 15 19:35:11 2012 +0000

    buffer: only flush non-internal tile backends in dispose
    
    This avoids walking the full tile cache on dispose of all internal buffers.

 gegl/buffer/gegl-buffer.c |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/gegl/buffer/gegl-buffer.c b/gegl/buffer/gegl-buffer.c
index 5575cec..9f683f8 100644
--- a/gegl/buffer/gegl-buffer.c
+++ b/gegl/buffer/gegl-buffer.c
@@ -53,6 +53,7 @@
 #include "gegl-tile-storage.h"
 #include "gegl-tile-backend.h"
 #include "gegl-tile-backend-file.h"
+#include "gegl-tile-backend-tiledir.h"
 #include "gegl-tile-backend-ram.h"
 #include "gegl-tile.h"
 #include "gegl-tile-handler-cache.h"
@@ -372,11 +373,18 @@ gegl_buffer_dispose (GObject *object)
   GeglTileHandler *handler = GEGL_TILE_HANDLER (object);
 
   gegl_buffer_sample_cleanup (buffer);
-  gegl_buffer_flush (buffer);
 
   if (handler->source &&
       GEGL_IS_TILE_STORAGE (handler->source))
     {
+      GeglTileBackend *backend = gegl_buffer_backend (buffer);
+
+      /* only flush non-internal backends,. */
+      if (!(GEGL_IS_TILE_BACKEND_FILE (backend) ||
+            GEGL_IS_TILE_BACKEND_RAM (backend) ||
+            GEGL_IS_TILE_BACKEND_TILE_DIR (backend)))
+        gegl_buffer_flush (buffer);
+
       gegl_buffer_void (buffer);
 #if 0
       g_object_unref (handler->source);
@@ -743,6 +751,7 @@ gegl_buffer_get_tile (GeglTileSource *source,
             gegl_tile_lock (tile);
             tile->tile_storage = buffer->tile_storage;
             gegl_tile_unlock (tile);
+            tile->rev--;
           }
         tile->x = x;
         tile->y = y;