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| 1 // Copyright (c) 2010 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 // This file defines a service that collects information about the user | |
| 6 // experience in order to help improve future versions of the app. | |
| 7 | |
| 8 #ifndef CHROME_FRAME_CRASH_REPORTING_CRASH_METRICS_H_ | |
| 9 #define CHROME_FRAME_CRASH_REPORTING_CRASH_METRICS_H_ | |
| 10 | |
| 11 #include "base/basictypes.h" | |
| 12 #include "base/lazy_instance.h" | |
| 13 #include "base/threading/thread_local.h" | |
| 14 | |
| 15 // This class provides functionality to track counters like successful page | |
| 16 // loads in the host browser, total number of crashes, page loads in chrome | |
| 17 // frame. | |
| 18 class CrashMetricsReporter { | |
| 19 public: | |
| 20 enum Metric { | |
| 21 NAVIGATION_COUNT, | |
| 22 CRASH_COUNT, | |
| 23 CHROME_FRAME_NAVIGATION_COUNT, | |
| 24 SESSION_ID, | |
| 25 CHANNEL_ERROR_COUNT, | |
| 26 LAST_METRIC, | |
| 27 }; | |
| 28 // Returns the global instance of this class. | |
| 29 static CrashMetricsReporter* GetInstance(); | |
| 30 | |
| 31 // The following function pair return/set/increment the specified user | |
| 32 // metrics value from the registry. These values are set under the | |
| 33 // following key:- | |
| 34 // HKCU\Software\\Google\\ChromeFrame\\UserMetrics | |
| 35 int GetMetric(Metric metric); | |
| 36 bool SetMetric(Metric metric, int value); | |
| 37 int IncrementMetric(Metric metric); | |
| 38 | |
| 39 // Records the crash metrics counters like navigation count, crash count. | |
| 40 void RecordCrashMetrics(); | |
| 41 | |
| 42 bool active() const { | |
| 43 return active_; | |
| 44 } | |
| 45 | |
| 46 void set_active(bool active) { | |
| 47 active_ = active; | |
| 48 } | |
| 49 | |
| 50 private: | |
| 51 friend struct base::DefaultLazyInstanceTraits<CrashMetricsReporter>; | |
| 52 | |
| 53 CrashMetricsReporter() | |
| 54 : active_(false) {} | |
| 55 virtual ~CrashMetricsReporter() {} | |
| 56 | |
| 57 // Indicates whether the crash metrics reporter instance is active. | |
| 58 bool active_; | |
| 59 | |
| 60 static wchar_t* g_metric_names[LAST_METRIC]; | |
| 61 | |
| 62 DISALLOW_COPY_AND_ASSIGN(CrashMetricsReporter); | |
| 63 }; | |
| 64 | |
| 65 #endif // CHROME_FRAME_CRASH_REPORTING_CRASH_METRICS_H_ | |
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