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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_METRICS_STATS_COUNTERS_H_ | 5 #ifndef BASE_METRICS_STATS_COUNTERS_H_ |
6 #define BASE_METRICS_STATS_COUNTERS_H_ | 6 #define BASE_METRICS_STATS_COUNTERS_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/base_export.h" | 10 #include "base/base_export.h" |
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157 | 157 |
158 // A StatsRate is a timer that keeps a count of the number of intervals added so | 158 // A StatsRate is a timer that keeps a count of the number of intervals added so |
159 // that several statistics can be produced: | 159 // that several statistics can be produced: |
160 // min, max, avg, count, total | 160 // min, max, avg, count, total |
161 class BASE_EXPORT StatsRate : public StatsCounterTimer { | 161 class BASE_EXPORT StatsRate : public StatsCounterTimer { |
162 public: | 162 public: |
163 // Constructs and starts the timer. | 163 // Constructs and starts the timer. |
164 explicit StatsRate(const std::string& name); | 164 explicit StatsRate(const std::string& name); |
165 virtual ~StatsRate(); | 165 virtual ~StatsRate(); |
166 | 166 |
167 virtual void Add(int value) OVERRIDE; | 167 void Add(int value) override; |
168 | 168 |
169 private: | 169 private: |
170 StatsCounter counter_; | 170 StatsCounter counter_; |
171 StatsCounter largest_add_; | 171 StatsCounter largest_add_; |
172 }; | 172 }; |
173 | 173 |
174 | 174 |
175 // Helper class for scoping a timer or rate. | 175 // Helper class for scoping a timer or rate. |
176 template<class T> class StatsScope { | 176 template<class T> class StatsScope { |
177 public: | 177 public: |
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188 timer_.Stop(); | 188 timer_.Stop(); |
189 } | 189 } |
190 | 190 |
191 private: | 191 private: |
192 T& timer_; | 192 T& timer_; |
193 }; | 193 }; |
194 | 194 |
195 } // namespace base | 195 } // namespace base |
196 | 196 |
197 #endif // BASE_METRICS_STATS_COUNTERS_H_ | 197 #endif // BASE_METRICS_STATS_COUNTERS_H_ |
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