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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 // StatisticsRecorder holds all Histograms and BucketRanges that are used by | 5 // StatisticsRecorder holds all Histograms and BucketRanges that are used by |
6 // Histograms in the system. It provides a general place for | 6 // Histograms in the system. It provides a general place for |
7 // Histograms/BucketRanges to register, and supports a global API for accessing | 7 // Histograms/BucketRanges to register, and supports a global API for accessing |
8 // (i.e., dumping, or graphing) the data. | 8 // (i.e., dumping, or graphing) the data. |
9 | 9 |
10 #ifndef BASE_METRICS_STATISTICS_RECORDER_H_ | 10 #ifndef BASE_METRICS_STATISTICS_RECORDER_H_ |
11 #define BASE_METRICS_STATISTICS_RECORDER_H_ | 11 #define BASE_METRICS_STATISTICS_RECORDER_H_ |
12 | 12 |
| 13 #include <stdint.h> |
| 14 |
13 #include <list> | 15 #include <list> |
14 #include <map> | 16 #include <map> |
15 #include <string> | 17 #include <string> |
16 #include <vector> | 18 #include <vector> |
17 | 19 |
18 #include "base/base_export.h" | 20 #include "base/base_export.h" |
19 #include "base/basictypes.h" | |
20 #include "base/callback.h" | 21 #include "base/callback.h" |
21 #include "base/gtest_prod_util.h" | 22 #include "base/gtest_prod_util.h" |
22 #include "base/lazy_instance.h" | 23 #include "base/lazy_instance.h" |
| 24 #include "base/macros.h" |
23 #include "base/metrics/histogram_base.h" | 25 #include "base/metrics/histogram_base.h" |
24 | 26 |
25 namespace base { | 27 namespace base { |
26 | 28 |
27 class BucketRanges; | 29 class BucketRanges; |
28 class Lock; | 30 class Lock; |
29 | 31 |
30 class BASE_EXPORT StatisticsRecorder { | 32 class BASE_EXPORT StatisticsRecorder { |
31 public: | 33 public: |
32 typedef std::vector<HistogramBase*> Histograms; | 34 typedef std::vector<HistogramBase*> Histograms; |
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99 // name of the histogram. | 101 // name of the histogram. |
100 typedef std::map<uint64_t, HistogramBase*> HistogramMap; | 102 typedef std::map<uint64_t, HistogramBase*> HistogramMap; |
101 | 103 |
102 // We keep a map of callbacks to histograms, so that as histograms are | 104 // We keep a map of callbacks to histograms, so that as histograms are |
103 // created, we can set the callback properly. | 105 // created, we can set the callback properly. |
104 typedef std::map<std::string, OnSampleCallback> CallbackMap; | 106 typedef std::map<std::string, OnSampleCallback> CallbackMap; |
105 | 107 |
106 // We keep all |bucket_ranges_| in a map, from checksum to a list of | 108 // We keep all |bucket_ranges_| in a map, from checksum to a list of |
107 // |bucket_ranges_|. Checksum is calculated from the |ranges_| in | 109 // |bucket_ranges_|. Checksum is calculated from the |ranges_| in |
108 // |bucket_ranges_|. | 110 // |bucket_ranges_|. |
109 typedef std::map<uint32, std::list<const BucketRanges*>*> RangesMap; | 111 typedef std::map<uint32_t, std::list<const BucketRanges*>*> RangesMap; |
110 | 112 |
111 friend struct DefaultLazyInstanceTraits<StatisticsRecorder>; | 113 friend struct DefaultLazyInstanceTraits<StatisticsRecorder>; |
112 friend class HistogramBaseTest; | 114 friend class HistogramBaseTest; |
113 friend class HistogramSnapshotManagerTest; | 115 friend class HistogramSnapshotManagerTest; |
114 friend class HistogramTest; | 116 friend class HistogramTest; |
115 friend class JsonPrefStoreTest; | 117 friend class JsonPrefStoreTest; |
116 friend class SparseHistogramTest; | 118 friend class SparseHistogramTest; |
117 friend class StatisticsRecorderTest; | 119 friend class StatisticsRecorderTest; |
118 FRIEND_TEST_ALL_PREFIXES(HistogramDeltaSerializationTest, | 120 FRIEND_TEST_ALL_PREFIXES(HistogramDeltaSerializationTest, |
119 DeserializeHistogramAndAddSamples); | 121 DeserializeHistogramAndAddSamples); |
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132 | 134 |
133 // Lock protects access to above maps. | 135 // Lock protects access to above maps. |
134 static base::Lock* lock_; | 136 static base::Lock* lock_; |
135 | 137 |
136 DISALLOW_COPY_AND_ASSIGN(StatisticsRecorder); | 138 DISALLOW_COPY_AND_ASSIGN(StatisticsRecorder); |
137 }; | 139 }; |
138 | 140 |
139 } // namespace base | 141 } // namespace base |
140 | 142 |
141 #endif // BASE_METRICS_STATISTICS_RECORDER_H_ | 143 #endif // BASE_METRICS_STATISTICS_RECORDER_H_ |
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