chrome/browser/metrics/chromeos_metrics_provider.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 CHROME_BROWSER_METRICS_CHROMEOS_METRICS_PROVIDER_H_
   6 #define CHROME_BROWSER_METRICS_CHROMEOS_METRICS_PROVIDER_H_
   7
   8 #include "base/memory/weak_ptr.h"
   9 #include "chrome/browser/metrics/perf_provider_chromeos.h"
  10 #include "components/metrics/metrics_provider.h"
  11
  12 namespace device {
  13 class BluetoothAdapter;
  14 }
  15
  16 namespace metrics {
  17 class ChromeUserMetricsExtension;
  18 }
  19
  20 class PrefRegistrySimple;
  21 class PrefService;
  22
  23 // Performs ChromeOS specific metrics logging.
  24 class ChromeOSMetricsProvider : public metrics::MetricsProvider {
  25  public:
  26   ChromeOSMetricsProvider();
  27   virtual ~ChromeOSMetricsProvider();
  28
  29   static void RegisterPrefs(PrefRegistrySimple* registry);
  30
  31   // Records a crash.
  32   static void LogCrash(const std::string& crash_type);
  33
  34   // Loads hardware class information. When this task is complete, |callback|
  35   // is run.
  36   void InitTaskGetHardwareClass(const base::Closure& callback);
  37
  38   // metrics::MetricsProvider:
  39   virtual void OnDidCreateMetricsLog() override;
  40   virtual void ProvideSystemProfileMetrics(
  41       metrics::SystemProfileProto* system_profile_proto) override;
  42   virtual void ProvideStabilityMetrics(
  43       metrics::SystemProfileProto* system_profile_proto) override;
  44   virtual void ProvideGeneralMetrics(
  45       metrics::ChromeUserMetricsExtension* uma_proto) override;
  46
  47  private:
  48   // Called on the FILE thread to load hardware class information.
  49   void InitTaskGetHardwareClassOnFileThread();
  50
  51   // Update the number of users logged into a multi-profile session.
  52   // If the number of users change while the log is open, the call invalidates
  53   // the user count value.
  54   void UpdateMultiProfileUserCount(
  55       metrics::SystemProfileProto* system_profile_proto);
  56
  57   // Sets the Bluetooth Adapter instance used for the WriteBluetoothProto()
  58   // call.
  59   void SetBluetoothAdapter(scoped_refptr<device::BluetoothAdapter> adapter);
  60
  61   // Writes info about paired Bluetooth devices on this system.
  62   void WriteBluetoothProto(metrics::SystemProfileProto* system_profile_proto);
  63
  64   metrics::PerfProvider perf_provider_;
  65
  66   // Bluetooth Adapter instance for collecting information about paired devices.
  67   scoped_refptr<device::BluetoothAdapter> adapter_;
  68
  69   // Whether the user count was registered at the last log initialization.
  70   bool registered_user_count_at_log_initialization_;
  71
  72   // The user count at the time that a log was last initialized. Contains a
  73   // valid value only if |registered_user_count_at_log_initialization_| is
  74   // true.
  75   uint64 user_count_at_log_initialization_;
  76
  77   // Hardware class (e.g., hardware qualification ID). This class identifies
  78   // the configured system components such as CPU, WiFi adapter, etc.
  79   std::string hardware_class_;
  80
  81   base::WeakPtrFactory<ChromeOSMetricsProvider> weak_ptr_factory_;
  82
  83   DISALLOW_COPY_AND_ASSIGN(ChromeOSMetricsProvider);
  84 };
  85
  86 #endif  // CHROME_BROWSER_METRICS_CHROMEOS_METRICS_PROVIDER_H_