ios/chrome/browser/metrics/ios_stability_metrics_provider.h

   1 // Copyright 2015 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 IOS_CHROME_BROWSER_METRICS_IOS_STABILITY_METRICS_PROVIDER_H_
   6 #define IOS_CHROME_BROWSER_METRICS_IOS_STABILITY_METRICS_PROVIDER_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "components/metrics/metrics_provider.h"
  11
  12 namespace metrics {
  13 class MetricsService;
  14 }
  15
  16 // Exposed for testing purposes only.
  17 // Values of the UMA Stability.MobileSessionShutdownType histogram.
  18 enum MobileSessionShutdownType {
  19   SHUTDOWN_IN_BACKGROUND = 0,
  20   SHUTDOWN_IN_FOREGROUND_NO_CRASH_LOG_NO_MEMORY_WARNING,
  21   SHUTDOWN_IN_FOREGROUND_WITH_CRASH_LOG_NO_MEMORY_WARNING,
  22   SHUTDOWN_IN_FOREGROUND_NO_CRASH_LOG_WITH_MEMORY_WARNING,
  23   SHUTDOWN_IN_FOREGROUND_WITH_CRASH_LOG_WITH_MEMORY_WARNING,
  24   FIRST_LAUNCH_AFTER_UPGRADE,
  25   MOBILE_SESSION_SHUTDOWN_TYPE_COUNT,
  26 };
  27
  28 class IOSStabilityMetricsProvider : public metrics::MetricsProvider {
  29  public:
  30   explicit IOSStabilityMetricsProvider(
  31       metrics::MetricsService* metrics_service);
  32   ~IOSStabilityMetricsProvider() override;
  33
  34   // metrics::MetricsProvider
  35   bool HasInitialStabilityMetrics() override;
  36   void ProvideInitialStabilityMetrics(
  37       metrics::SystemProfileProto* system_profile_proto) override;
  38
  39  protected:
  40   // Provides information on the last session environment, used to decide what
  41   // stability metrics to provide in ProvideInitialStabilityMetrics.
  42   // These methods are virtual to be overridden in the tests.
  43   // The default implementations return the real values.
  44
  45   // Whether this is the first time the app is launched after an upgrade.
  46   virtual bool IsFirstLaunchAfterUpgrade();
  47
  48   // Whether there are crash reports to upload.
  49   virtual bool HasCrashLogs();
  50
  51   // Whether there were crash reports that have been uploaded in background
  52   // since the last full start.
  53   virtual bool HasUploadedCrashReportsInBackground();
  54
  55   // Whether there was a memory warning shortly before last shutdown.
  56   virtual bool ReceivedMemoryWarningBeforeLastShutdown();
  57
  58  private:
  59   metrics::MetricsService* metrics_service_;
  60   DISALLOW_COPY_AND_ASSIGN(IOSStabilityMetricsProvider);
  61 };
  62
  63 #endif  // IOS_CHROME_BROWSER_METRICS_IOS_STABILITY_METRICS_PROVIDER_H_