void
tile_lock (Tile *tile)
{
/* Increment the global reference count.
*/
tile_ref_count++;
/* Increment this tile's reference count.
*/
tile->ref_count++;
if (tile->ref_count == 1)
{
/* remove from cache, move to main store */
tile_cache_flush (tile);
#ifdef TILE_PROFILING
tile_active_count++;
#endif
}
if (tile->data == NULL)
{
/* There is no data, so the tile must be swapped out */
tile_swap_in (tile);
}
/* Call 'tile_manager_validate' if the tile was invalid.
*/
if (! tile->valid)
{
/* an invalid tile should never be shared, so this should work */
tile_manager_validate_tile (tile->tlink->tm, tile);
}
}
static void
tile_destroy (Tile *tile)
{
if (G_UNLIKELY (tile->ref_count))
{
g_warning ("tried to destroy a ref'd tile");
return;
}
if (G_UNLIKELY (tile->share_count))
{
g_warning ("tried to destroy an attached tile");
return;
}
if (tile->data)
{
g_free (tile->data);
tile->data = NULL;
#ifdef TILE_PROFILING
tile_exist_count--;
#endif
}
if (tile->rowhint)
{
g_slice_free1 (sizeof (TileRowHint) * TILE_HEIGHT, tile->rowhint);
tile->rowhint = NULL;
}
/* must flush before deleting swap */
tile_cache_flush (tile);
if (tile->swap_offset != -1)
{
/* If the tile is on disk, then delete its
* presence there.
*/
tile_swap_delete (tile);
}
g_slice_free (Tile, tile);
#ifdef TILE_PROFILING
tile_count--;
#endif
}
static void
tile_cache_zorch_next ()
{
if (tile_list_head)
tile_cache_flush ((Tile*) tile_list_head->data);
}
