chromecast/browser/metrics/cast_stability_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 CHROMECAST_BROWSER_METRICS_CAST_STABILITY_METRICS_PROVIDER_H_
   6 #define CHROMECAST_BROWSER_METRICS_CAST_STABILITY_METRICS_PROVIDER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/process/kill.h"
  10 #include "components/metrics/metrics_provider.h"
  11 #include "content/public/browser/browser_child_process_observer.h"
  12 #include "content/public/browser/notification_observer.h"
  13 #include "content/public/browser/notification_registrar.h"
  14
  15 class PrefRegistrySimple;
  16
  17 namespace content {
  18 class RenderProcessHost;
  19 class WebContents;
  20 }
  21
  22 namespace metrics {
  23 class MetricsService;
  24 }
  25
  26 namespace chromecast {
  27 namespace metrics {
  28
  29 // CastStabilityMetricsProvider gathers and logs stability-related metrics.
  30 // Loosely based on ChromeStabilityMetricsProvider from chrome/browser/metrics.
  31 class CastStabilityMetricsProvider
  32     : public ::metrics::MetricsProvider,
  33       public content::BrowserChildProcessObserver,
  34       public content::NotificationObserver {
  35  public:
  36   // Registers local state prefs used by this class.
  37   static void RegisterPrefs(PrefRegistrySimple* registry);
  38
  39   explicit CastStabilityMetricsProvider(
  40       ::metrics::MetricsService* metrics_service);
  41   ~CastStabilityMetricsProvider() override;
  42
  43   // metrics::MetricsDataProvider implementation:
  44   void OnRecordingEnabled() override;
  45   void OnRecordingDisabled() override;
  46   void ProvideStabilityMetrics(
  47       ::metrics::SystemProfileProto* system_profile_proto) override;
  48
  49   // Logs an external crash, presumably from the ExternalMetrics service.
  50   void LogExternalCrash(const std::string& crash_type);
  51
  52  private:
  53   // content::NotificationObserver implementation:
  54   void Observe(int type,
  55                const content::NotificationSource& source,
  56                const content::NotificationDetails& details) override;
  57
  58   // content::BrowserChildProcessObserver implementation:
  59   void BrowserChildProcessCrashed(
  60       const content::ChildProcessData& data,
  61       int exit_code) override;
  62
  63   // Records a renderer process crash.
  64   void LogRendererCrash(content::RenderProcessHost* host,
  65                         base::TerminationStatus status,
  66                         int exit_code);
  67
  68   // Records a renderer process hang.
  69   void LogRendererHang();
  70
  71   // Registrar for receiving stability-related notifications.
  72   content::NotificationRegistrar registrar_;
  73
  74   // Reference to the current MetricsService. Raw pointer is safe, since
  75   // MetricsService is responsible for the lifetime of
  76   // CastStabilityMetricsProvider.
  77   ::metrics::MetricsService* metrics_service_;
  78
  79   DISALLOW_COPY_AND_ASSIGN(CastStabilityMetricsProvider);
  80 };
  81
  82 }  // namespace metrics
  83 }  // namespace chromecast
  84
  85 #endif  // CHROMECAST_BROWSER_METRICS_CAST_STABILITY_METRICS_PROVIDER_H_