cc: Check for completed raster tasks at interval.

cc/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_TILE_MANAGER_H_
 #define CC_TILE_MANAGER_H_
 
 #include <list>
 #include <queue>
 #include <vector>
 
 #include "base/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "cc/memory_history.h"
 #include "cc/rendering_stats.h"
 #include "cc/resource_pool.h"
 #include "cc/tile_priority.h"
+#include "cc/worker_pool.h"
 
 namespace cc {
 class RasterWorkerPool;
 class ResourceProvider;
 class Tile;
 class TileVersion;
 
 class CC_EXPORT TileManagerClient {
  public:
   virtual void ScheduleManageTiles() = 0;
+  virtual void ScheduleCheckForCompletedRasterTasks() = 0;
   virtual void DidUploadVisibleHighResolutionTile() = 0;
+  virtual void DidDetectIdleRaster() = 0;
 
  protected:
   virtual ~TileManagerClient() {}
 };
 
 // Tile manager classifying tiles into a few basic
 // bins:
 enum TileManagerBin {
   NOW_BIN = 0, // Needed ASAP.
   SOON_BIN = 1, // Impl-side version of prepainting.
@@ skipping 48 matching lines @@
   // send to the GPU memory manager to determine policy.
   TileManagerBin gpu_memmgr_stats_bin;
   TileResolution resolution;
   float time_to_needed_in_seconds;
 };
 
 // This class manages tiles, deciding which should get rasterized and which
 // should no longer have any memory assigned to them. Tile objects are "owned"
 // by layers; they automatically register with the manager when they are
 // created, and unregister from the manager when they are deleted.
-class CC_EXPORT TileManager {
+class CC_EXPORT TileManager : public WorkerPoolClient {
  public:
   TileManager(TileManagerClient* client,
               ResourceProvider *resource_provider,
               size_t num_raster_threads,
               bool use_cheapess_estimator);
   virtual ~TileManager();
 
   const GlobalStateThatImpactsTilePriority& GlobalState() const {
       return global_state_;
   }
   void SetGlobalState(const GlobalStateThatImpactsTilePriority& state);
 
   void ManageTiles();
+  void CheckForCompletedRasterTasks();
   void CheckForCompletedTileUploads();
   void AbortPendingTileUploads();
 
   scoped_ptr<base::Value> BasicStateAsValue() const;
   scoped_ptr<base::Value> AllTilesAsValue() const;
   void GetMemoryStats(size_t* memoryRequiredBytes,
                       size_t* memoryNiceToHaveBytes,
                       size_t* memoryUsedBytes) const;
   void SetRecordRenderingStats(bool record_rendering_stats);
   void GetRenderingStats(RenderingStats* stats);
   bool HasPendingWorkScheduled(WhichTree tree) const;
 
   const MemoryHistory::Entry& memory_stats_from_last_assign() const { return memory_stats_from_last_assign_; }
 
+  // Overridden from WorkerPoolClient:
+  virtual void OnIdle() OVERRIDE;
+
  protected:
   // Methods called by Tile
   friend class Tile;
   void RegisterTile(Tile* tile);
   void UnregisterTile(Tile* tile);
   void WillModifyTilePriority(
       Tile* tile, WhichTree tree, const TilePriority& new_priority) {
     // TODO(nduca): Do something smarter if reprioritization turns out to be
     // costly.
     ScheduleManageTiles();
@@ skipping 62 matching lines @@
   typedef std::list<Tile*> TileList;
   // Tiles with image decoding tasks. These tiles need to be rasterized
   // when all the image decoding tasks finish.
   TileList tiles_with_image_decoding_tasks_;
 
   typedef base::hash_map<uint32_t, skia::LazyPixelRef*> PixelRefMap;
   PixelRefMap pending_decode_tasks_;
 
   typedef std::queue<scoped_refptr<Tile> > TileQueue;
   TileQueue tiles_with_pending_set_pixels_;
-  size_t bytes_pending_set_pixels_;
   bool ever_exceeded_memory_budget_;
   MemoryHistory::Entry memory_stats_from_last_assign_;
 
+  size_t bytes_pending_raster_;
+  size_t bytes_pending_set_pixels_;
+
   bool record_rendering_stats_;
   RenderingStats rendering_stats_;
 
   bool use_cheapness_estimator_;
   int raster_state_count_[NUM_STATES][NUM_TREES][NUM_BINS];
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILE_MANAGER_H_