cc/tiles/eviction_tile_priority_queue.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   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/base/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();
  24
  25   void Build(const std::vector<PictureLayerImpl*>& active_layers,
  26              const std::vector<PictureLayerImpl*>& pending_layers,
  27              TreePriority tree_priority);
  28
  29   bool IsEmpty() const;
  30   const PrioritizedTile& Top() const;
  31   void Pop();
  32
  33  private:
  34   ScopedPtrVector<TilingSetEvictionQueue>& GetNextQueues();
  35   const ScopedPtrVector<TilingSetEvictionQueue>& GetNextQueues() const;
  36
  37   ScopedPtrVector<TilingSetEvictionQueue> active_queues_;
  38   ScopedPtrVector<TilingSetEvictionQueue> pending_queues_;
  39   TreePriority tree_priority_;
  40
  41   DISALLOW_COPY_AND_ASSIGN(EvictionTilePriorityQueue);
  42 };
  43
  44 }  // namespace cc
  45
  46 #endif  // CC_TILES_EVICTION_TILE_PRIORITY_QUEUE_H_