Part 8 of cc/ directory shuffles: resources

cc/resource_update_controller.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_RESOURCE_UPDATE_CONTROLLER_H_
-#define CC_RESOURCE_UPDATE_CONTROLLER_H_
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/time.h"
-#include "cc/base/cc_export.h"
-#include "cc/resource_update_queue.h"
-
-namespace cc {
-
-class ResourceProvider;
-class Thread;
-
-class ResourceUpdateControllerClient {
- public:
-  virtual void ReadyToFinalizeTextureUpdates() = 0;
-
- protected:
-  virtual ~ResourceUpdateControllerClient() {}
-};
-
-class CC_EXPORT ResourceUpdateController {
- public:
-  static scoped_ptr<ResourceUpdateController> Create(
-      ResourceUpdateControllerClient* client,
-      Thread* thread,
-      scoped_ptr<ResourceUpdateQueue> queue,
-      ResourceProvider* resource_provider) {
-    return make_scoped_ptr(new ResourceUpdateController(
-        client, thread, queue.Pass(), resource_provider));
-  }
-  static size_t MaxPartialTextureUpdates();
-
-  virtual ~ResourceUpdateController();
-
-  // Discard uploads to textures that were evicted on the impl thread.
-  void DiscardUploadsToEvictedResources();
-
-  void PerformMoreUpdates(base::TimeTicks time_limit);
-  void Finalize();
-
-
-  // Virtual for testing.
-  virtual base::TimeTicks Now() const;
-  virtual base::TimeDelta UpdateMoreTexturesTime() const;
-  virtual size_t UpdateMoreTexturesSize() const;
-
- protected:
-  ResourceUpdateController(ResourceUpdateControllerClient* client,
-                           Thread* thread,
-                           scoped_ptr<ResourceUpdateQueue> queue,
-                           ResourceProvider* resource_provider);
-
- private:
-  static size_t MaxFullUpdatesPerTick(ResourceProvider* resource_provider);
-
-  size_t MaxBlockingUpdates() const;
-  base::TimeDelta PendingUpdateTime() const;
-
-  void UpdateTexture(ResourceUpdate update);
-
-  // This returns true when there were textures left to update.
-  bool UpdateMoreTexturesIfEnoughTimeRemaining();
-  void UpdateMoreTexturesNow();
-  void OnTimerFired();
-
-  ResourceUpdateControllerClient* client_;
-  scoped_ptr<ResourceUpdateQueue> queue_;
-  bool contents_textures_purged_;
-  ResourceProvider* resource_provider_;
-  base::TimeTicks time_limit_;
-  size_t texture_updates_per_tick_;
-  bool first_update_attempt_;
-  Thread* thread_;
-  base::WeakPtrFactory<ResourceUpdateController> weak_factory_;
-  bool task_posted_;
-
-  DISALLOW_COPY_AND_ASSIGN(ResourceUpdateController);
-};
-
-}  // namespace cc
-
-#endif  // CC_RESOURCE_UPDATE_CONTROLLER_H_