| // Copyright 2013 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 CONTENT_BROWSER_RENDERER_HOST_RENDERER_FRAME_MANAGER_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_RENDERER_FRAME_MANAGER_H_ |
| |
| #include <list> |
| #include <map> |
| |
| #include "base/basictypes.h" |
| #include "base/memory/singleton.h" |
| #include "content/common/content_export.h" |
| |
| namespace content { |
| |
| class CONTENT_EXPORT RendererFrameManagerClient { |
| public: |
| virtual ~RendererFrameManagerClient() {} |
| virtual void EvictCurrentFrame() = 0; |
| }; |
| |
| class CONTENT_EXPORT RendererFrameManager { |
| public: |
| static RendererFrameManager* GetInstance(); |
| |
| void AddFrame(RendererFrameManagerClient*, bool locked); |
| void RemoveFrame(RendererFrameManagerClient*); |
| void LockFrame(RendererFrameManagerClient*); |
| void UnlockFrame(RendererFrameManagerClient*); |
| |
| size_t max_number_of_saved_frames() const { |
| return max_number_of_saved_frames_; |
| } |
| |
| // For testing only |
| void set_max_handles(float max_handles) { max_handles_ = max_handles; } |
| |
| private: |
| RendererFrameManager(); |
| ~RendererFrameManager(); |
| void CullUnlockedFrames(); |
| |
| friend struct DefaultSingletonTraits<RendererFrameManager>; |
| |
| std::map<RendererFrameManagerClient*, size_t> locked_frames_; |
| std::list<RendererFrameManagerClient*> unlocked_frames_; |
| size_t max_number_of_saved_frames_; |
| float max_handles_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RendererFrameManager); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_RENDERER_FRAME_MANAGER_H_ |