components/power/origin_power_map.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 COMPONENTS_POWER_ORIGIN_POWER_MAP_H_
   6 #define COMPONENTS_POWER_ORIGIN_POWER_MAP_H_
   7
   8 #include <map>
   9
  10 #include "components/keyed_service/core/keyed_service.h"
  11 #include "url/gurl.h"
  12
  13 namespace power {
  14
  15 // Tracks app and website origins and how much power they are consuming while
  16 // running.
  17 class OriginPowerMap : public KeyedService {
  18  public:
  19   typedef std::map<GURL, int> PercentOriginMap;
  20
  21   OriginPowerMap();
  22   virtual ~OriginPowerMap();
  23
  24   // Returns the integer percentage usage of the total power consumed by a
  25   // given URL's origin.
  26   int GetPowerForOrigin(const GURL& url);
  27
  28   // Adds a certain amount of power consumption to a given URL's origin.
  29   // |power| is a platform-specific heuristic estimating power consumption.
  30   void AddPowerForOrigin(const GURL& url, double power);
  31
  32   // Returns a map of all origins to the integer percentage usage of power
  33   // consumed.
  34   PercentOriginMap GetPercentOriginMap();
  35
  36  private:
  37   // OriginMap maps a URL to the amount of power consumed by the URL using the
  38   // same units as |total_consumed_|.
  39   typedef std::map<GURL, double> OriginMap;
  40   OriginMap origin_map_;
  41
  42   // Total amount of power consumed using units determined by
  43   // the power heuristics available to the platform.
  44   double total_consumed_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(OriginPowerMap);
  47 };
  48
  49 }  // namespace power
  50
  51 #endif  // COMPONENTS_POWER_ORIGIN_POWER_MAP_H_