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/metrics/user_metrics.h"
  10 #include "base/process/kill.h"
  11 #include "components/metrics/metrics_provider.h"
  12 #include "content/public/browser/browser_child_process_observer.h"
  13 #include "content/public/browser/notification_observer.h"
  14 #include "content/public/browser/notification_registrar.h"
  15
  16 class MetricsService;
  17 class PrefRegistrySimple;
  18
  19 namespace content {
  20 class RenderProcessHost;
  21 class WebContents;
  22 }
  23
  24 namespace chromecast {
  25 namespace metrics {
  26
  27 // CastStabilityMetricsProvider gathers and logs stability-related metrics.
  28 // Loosely based on ChromeStabilityMetricsProvider from chrome/browser/metrics.
  29 class CastStabilityMetricsProvider
  30     : public ::metrics::MetricsProvider,
  31       public content::BrowserChildProcessObserver,
  32       public content::NotificationObserver {
  33  public:
  34   // Registers local state prefs used by this class.
  35   static void RegisterPrefs(PrefRegistrySimple* registry);
  36
  37   CastStabilityMetricsProvider();
  38   virtual ~CastStabilityMetricsProvider();
  39
  40   // metrics::MetricsDataProvider implementation:
  41   virtual void OnRecordingEnabled() override;
  42   virtual void OnRecordingDisabled() override;
  43   virtual void ProvideStabilityMetrics(
  44       ::metrics::SystemProfileProto* system_profile_proto) override;
  45
  46  private:
  47   // content::NotificationObserver implementation:
  48   virtual void Observe(int type,
  49                        const content::NotificationSource& source,
  50                        const content::NotificationDetails& details) override;
  51
  52   // content::BrowserChildProcessObserver implementation:
  53   virtual void BrowserChildProcessCrashed(
  54       const content::ChildProcessData& data) override;
  55
  56   // Records a renderer process crash.
  57   void LogRendererCrash(content::RenderProcessHost* host,
  58                         base::TerminationStatus status,
  59                         int exit_code);
  60
  61   // Records a renderer process hang.
  62   void LogRendererHang();
  63
  64   // Registrar for receiving stability-related notifications.
  65   content::NotificationRegistrar registrar_;
  66
  67   DISALLOW_COPY_AND_ASSIGN(CastStabilityMetricsProvider);
  68 };
  69
  70 }  // namespace metrics
  71 }  // namespace chromecast
  72
  73 #endif  // CHROMECAST_BROWSER_METRICS_CAST_STABILITY_METRICS_PROVIDER_H_