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 COMPONENTS_POWER_ORIGIN_POWER_MAP_H_ 6 #define COMPONENTS_POWER_ORIGIN_POWER_MAP_H_ 7 8 #include <map> 9 10 #include "base/callback_list.h" 11 #include "components/keyed_service/core/keyed_service.h" 12 #include "url/gurl.h" 13 14 namespace power { 15 16 // Tracks app and website origins and how much power they are consuming while 17 // running. 18 class OriginPowerMap : public KeyedService { 19 public: 20 typedef std::map<GURL, int> PercentOriginMap; 21 typedef base::CallbackList<void(void)>::Subscription Subscription; 22 23 OriginPowerMap(); 24 virtual ~OriginPowerMap(); 25 26 // Returns the integer percentage usage of the total power consumed by a 27 // given URL's origin. 28 int GetPowerForOrigin(const GURL& url); 29 30 // Adds a certain amount of power consumption to a given URL's origin. 31 // |power| is a platform-specific heuristic estimating power consumption. 32 void AddPowerForOrigin(const GURL& url, double power); 33 34 // Returns a map of all origins to the integer percentage usage of power 35 // consumed. 36 PercentOriginMap GetPercentOriginMap(); 37 38 // Adds a callback for the completion of a round of updates to |origin_map_|. 39 scoped_ptr<Subscription> AddPowerConsumptionUpdatedCallback( 40 const base::Closure& callback); 41 42 // Notifies observers to let them know that the origin power map has finished 43 // updating for all origins this cycle. 44 void OnAllOriginsUpdated(); 45 46 // Clears all URLs out of the map. 47 void ClearOriginMap(); 48 49 private: 50 // OriginMap maps a URL to the amount of power consumed by the URL using the 51 // same units as |total_consumed_|. 52 typedef std::map<GURL, double> OriginMap; 53 OriginMap origin_map_; 54 55 // Total amount of power consumed using units determined by 56 // the power heuristics available to the platform. 57 double total_consumed_; 58 59 base::CallbackList<void(void)> callback_list_; 60 61 DISALLOW_COPY_AND_ASSIGN(OriginPowerMap); 62 }; 63 64 } // namespace power 65 66 #endif // COMPONENTS_POWER_ORIGIN_POWER_MAP_H_ 67