cc/tiles/eviction_tile_priority_queue.h

   1 // Copyright 2014 The Chromium Authors
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CC_TILES_EVICTION_TILE_PRIORITY_QUEUE_H_
   6 #define CC_TILES_EVICTION_TILE_PRIORITY_QUEUE_H_
   7
   8 #include <set>
   9 #include <utility>
  10 #include <vector>
  11
  12 #include "cc/cc_export.h"
  13 #include "cc/layers/picture_layer_impl.h"
  14 #include "cc/tiles/tile_priority.h"
  15 #include "cc/tiles/tiling_set_eviction_queue.h"
  16
  17 namespace cc {
  18 class PrioritizedTile;
  19
  20 class CC_EXPORT EvictionTilePriorityQueue {
  21  public:
  22   EvictionTilePriorityQueue();
  23   EvictionTilePriorityQueue(const EvictionTilePriorityQueue&) = delete;
  24   ~EvictionTilePriorityQueue();
  25
  26   EvictionTilePriorityQueue& operator=(const EvictionTilePriorityQueue&) =
  27       delete;
  28
  29   void Build(const std::vector<PictureLayerImpl*>& active_layers,
  30              const std::vector<PictureLayerImpl*>& pending_layers,
  31              TreePriority tree_priority);
  32
  33   bool IsEmpty() const;
  34   const PrioritizedTile& Top() const;
  35   void Pop();
  36
  37  private:
  38   std::vector<std::unique_ptr<TilingSetEvictionQueue>>& GetNextQueues();
  39   const std::vector<std::unique_ptr<TilingSetEvictionQueue>>& GetNextQueues()
  40       const;
  41
  42   std::vector<std::unique_ptr<TilingSetEvictionQueue>> active_queues_;
  43   std::vector<std::unique_ptr<TilingSetEvictionQueue>> pending_queues_;
  44   TreePriority tree_priority_;
  45 };
  46
  47 }  // namespace cc
  48
  49 #endif  // CC_TILES_EVICTION_TILE_PRIORITY_QUEUE_H_