cc: Remove tile ref counting in tile manager.

cc/resources/tile_manager.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_RESOURCES_TILE_MANAGER_H_
 #define CC_RESOURCES_TILE_MANAGER_H_
 
 #include <queue>
 #include <set>
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "cc/debug/rendering_stats_instrumentation.h"
 #include "cc/resources/managed_tile_state.h"
 #include "cc/resources/memory_history.h"
 #include "cc/resources/picture_pile_impl.h"
 #include "cc/resources/raster_worker_pool.h"
 #include "cc/resources/resource_pool.h"
+#include "cc/resources/tile.h"
 
 namespace cc {
 class ResourceProvider;
-class Tile;
-class TileVersion;
 
 class CC_EXPORT TileManagerClient {
  public:
   virtual void DidInitializeVisibleTile() = 0;
   virtual void NotifyReadyToActivate() = 0;
 
  protected:
   virtual ~TileManagerClient() {}
 };
 
@@ skipping 23 matching lines @@
   scoped_ptr<base::Value> AllTilesAsValue() const;
   void GetMemoryStats(size_t* memory_required_bytes,
                       size_t* memory_nice_to_have_bytes,
                       size_t* memory_used_bytes) const;
 
   const MemoryHistory::Entry& memory_stats_from_last_assign() const {
     return memory_stats_from_last_assign_;
   }
 
   bool AreTilesRequiredForActivationReady() const {
-    return tiles_that_need_to_be_initialized_for_activation_.empty() &&
-        oom_tiles_that_need_to_be_initialized_for_activation_.empty();
+    return all_tiles_required_for_activation_have_been_initialized_ &&
+        all_tiles_required_for_activation_have_memory_;
   }
 
  protected:
   TileManager(TileManagerClient* client,
               ResourceProvider* resource_provider,
               scoped_ptr<RasterWorkerPool> raster_worker_pool,
               size_t num_raster_threads,
               RenderingStatsInstrumentation* rendering_stats_instrumentation,
               GLenum texture_format);
 
   // Methods called by Tile
   friend class Tile;
   void RegisterTile(Tile* tile);
   void UnregisterTile(Tile* tile);
 
   // Overriden from RasterWorkerPoolClient:
   virtual bool ShouldForceTasksRequiredForActivationToComplete() const
       OVERRIDE;
   virtual void DidFinishedRunningTasks() OVERRIDE;
   virtual void DidFinishedRunningTasksRequiredForActivation() OVERRIDE;
 
+  typedef std::vector<Tile*> TileVector;
+  typedef std::vector<scoped_refptr<Tile> > TileRefVector;
+  typedef std::set<Tile*> TileSet;
+
   // Virtual for test
-  virtual void ScheduleTasks();
+  virtual void ScheduleTasks(
+      const TileVector& tiles_that_need_to_be_rasterized);
 
-  const std::vector<Tile*>& tiles_that_need_to_be_rasterized() const {
-    return tiles_that_need_to_be_rasterized_;
-  }
-
-  void ReassignGpuMemoryToOOMTilesRequiredForActivation();
+  void ReassignGpuMemoryToOOMTilesRequiredForActivation(
+      const TileRefVector& sorted_tiles,
+      TileVector* tiles_that_need_to_be_rasterized,
+      TileSet* oom_tiles_required_for_activation);
+  void AssignGpuMemoryToTiles(
+      const TileRefVector& sorted_tiles,
+      TileVector* tiles_that_need_to_be_rasterized,
+      TileSet* oom_tiles_required_for_activation);
+  void AssignBinsToTiles(TileRefVector* tiles);
+  void SortTiles(TileRefVector* tiles);
+  void GetSortedTiles(TileRefVector* tiles);
 
  private:
   void OnImageDecodeTaskCompleted(
       int layer_id,
       skia::LazyPixelRef* pixel_ref,
       bool was_canceled);
   void OnRasterTaskCompleted(
-      scoped_refptr<Tile> tile,
+      Tile::Id tile,
       scoped_ptr<ResourcePool::Resource> resource,
       RasterMode raster_mode,
       const PicturePileImpl::Analysis& analysis,
       bool was_canceled);
 
-  void AssignBinsToTiles();
-  void SortTiles();
   RasterMode DetermineRasterMode(const Tile* tile) const;
   void CleanUpUnusedImageDecodeTasks();
-  void AssignGpuMemoryToTiles();
   void FreeResourceForTile(Tile* tile, RasterMode mode);
   void FreeResourcesForTile(Tile* tile);
   void FreeUnusedResourcesForTile(Tile* tile);
   RasterWorkerPool::Task CreateImageDecodeTask(
       Tile* tile, skia::LazyPixelRef* pixel_ref);
   RasterWorkerPool::RasterTask CreateRasterTask(Tile* tile);
-  void DidFinishTileInitialization(Tile* tile);
-  void DidTileTreeBinChange(Tile* tile,
-                            ManagedTileBin new_tree_bin,
-                            WhichTree tree);
   scoped_ptr<base::Value> GetMemoryRequirementsAsValue() const;
-  void AddRequiredTileForActivation(Tile* tile);
 
   TileManagerClient* client_;
   scoped_ptr<ResourcePool> resource_pool_;
   scoped_ptr<RasterWorkerPool> raster_worker_pool_;
   GlobalStateThatImpactsTilePriority global_state_;
 
-  typedef std::vector<Tile*> TileVector;
-  TileVector tiles_;
-  TileVector tiles_that_need_to_be_rasterized_;
-  typedef std::set<Tile*> TileSet;
-  TileSet tiles_that_need_to_be_initialized_for_activation_;
-  TileSet oom_tiles_that_need_to_be_initialized_for_activation_;
+  typedef base::hash_map<Tile::Id, Tile*> TileMap;
+  TileMap tiles_;
+
+  TileRefVector sorted_tiles_;
+
+  bool all_tiles_required_for_activation_have_been_initialized_;
+  bool all_tiles_required_for_activation_have_memory_;
 
   bool ever_exceeded_memory_budget_;
   MemoryHistory::Entry memory_stats_from_last_assign_;
 
   RenderingStatsInstrumentation* rendering_stats_instrumentation_;
 
   bool did_initialize_visible_tile_;
 
   GLenum texture_format_;
 
   typedef base::hash_map<uint32_t, RasterWorkerPool::Task> PixelRefTaskMap;
   typedef base::hash_map<int, PixelRefTaskMap> LayerPixelRefTaskMap;
   LayerPixelRefTaskMap image_decode_tasks_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TILE_MANAGER_H_