Send memory management policies to the tile manager

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/resource_pool.h"
 #include "cc/tile_priority.h"
 
 namespace cc {
 
 class RasterThread;
 class ResourceProvider;
 class Tile;
 class TileVersion;
 struct RenderingStats;
 
 class CC_EXPORT TileManagerClient {
  public:
   virtual void ScheduleManageTiles() = 0;
   virtual void ScheduleCheckForCompletedSetPixels() = 0;
+  virtual void SendTileManagerMemoryStats(

[nduca, 2012/12/28 02:16:03]

Lets flip this to GetMemoryStats and just have the caller of ManageTiles check
this. It'll be easier to test.

[ccameron, 2012/12/28 19:56:00]

Done.

+     size_t memoryRequiredBytes,
+     size_t memoryNiceToHaveBytes,
+     size_t memoryUsedBytes) = 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 15 matching lines @@
   scoped_ptr<ResourcePool::Resource> resource;
   bool resource_is_being_initialized;
   bool contents_swizzled;
   bool need_to_gather_pixel_refs;
   std::list<skia::LazyPixelRef*> pending_pixel_refs;
 
   // Ephemeral state, valid only during Manage.
   TileManagerBin bin[NUM_TREES];
   // Bin used to determine raster priority.
   TileManagerBin raster_bin;
+  // The bin that the tile would have if the GPU memory manager had a maximally permissive policy,
+  // 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 {
  public:
@@ skipping 36 matching lines @@
       RenderingStats*);
   void DidFinishTileInitialization(Tile*);
   void DispatchImageDecodingTasksForTile(Tile*);
   void OnImageDecodingTaskCompleted(scoped_refptr<Tile>,
                                     uint32_t,
                                     RenderingStats*);
   void DispatchOneImageDecodingTask(
       RasterThread*, scoped_refptr<Tile>, skia::LazyPixelRef*);
   void GatherPixelRefsForTile(Tile*);
   RasterThread* GetFreeRasterThread();
+  void SendManagedMemoryStats();
 
   TileManagerClient* client_;
   scoped_ptr<ResourcePool> resource_pool_;
   bool manage_tiles_pending_;
   int manage_tiles_call_count_;
   bool check_for_completed_set_pixels_pending_;
 
   GlobalStateThatImpactsTilePriority global_state_;
 
   int tiles_in_bin_count_[NUM_BINS][NUM_TREES];
@@ skipping 18 matching lines @@
   RasterThreadVector raster_threads_;
 
   RenderingStats rendering_stats_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILE_MANAGER_H_