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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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 COMPONENTS_CRONET_HISTOGRAM_MANAGER_H_ | 5 #ifndef COMPONENTS_CRONET_HISTOGRAM_MANAGER_H_ |
6 #define COMPONENTS_CRONET_HISTOGRAM_MANAGER_H_ | 6 #define COMPONENTS_CRONET_HISTOGRAM_MANAGER_H_ |
7 | 7 |
| 8 #include <stdint.h> |
| 9 |
8 #include <string> | 10 #include <string> |
9 #include <vector> | 11 #include <vector> |
10 | 12 |
11 #include "base/basictypes.h" | |
12 #include "base/lazy_instance.h" | 13 #include "base/lazy_instance.h" |
13 #include "base/macros.h" | 14 #include "base/macros.h" |
14 #include "base/memory/scoped_ptr.h" | 15 #include "base/memory/scoped_ptr.h" |
15 #include "base/metrics/histogram_flattener.h" | 16 #include "base/metrics/histogram_flattener.h" |
16 #include "base/metrics/histogram_snapshot_manager.h" | 17 #include "base/metrics/histogram_snapshot_manager.h" |
17 #include "components/metrics/proto/chrome_user_metrics_extension.pb.h" | 18 #include "components/metrics/proto/chrome_user_metrics_extension.pb.h" |
18 | 19 |
19 namespace cronet { | 20 namespace cronet { |
20 | 21 |
21 // A HistogramManager instance is created by the app. It is the central | 22 // A HistogramManager instance is created by the app. It is the central |
22 // controller for the acquisition of log data, and recording deltas for | 23 // controller for the acquisition of log data, and recording deltas for |
23 // transmission to an external server. | 24 // transmission to an external server. |
24 class HistogramManager : public base::HistogramFlattener { | 25 class HistogramManager : public base::HistogramFlattener { |
25 public: | 26 public: |
26 HistogramManager(); | 27 HistogramManager(); |
27 ~HistogramManager() override; | 28 ~HistogramManager() override; |
28 | 29 |
29 // Snapshot all histograms to record the delta into |uma_proto_| and then | 30 // Snapshot all histograms to record the delta into |uma_proto_| and then |
30 // returns the serialized protobuf representation of the record in |data|. | 31 // returns the serialized protobuf representation of the record in |data|. |
31 // Returns true if it was successfully serialized. | 32 // Returns true if it was successfully serialized. |
32 bool GetDeltas(std::vector<uint8>* data); | 33 bool GetDeltas(std::vector<uint8_t>* data); |
33 | 34 |
34 // TODO(mef): Hang Histogram Manager off java object instead of singleton. | 35 // TODO(mef): Hang Histogram Manager off java object instead of singleton. |
35 static HistogramManager* GetInstance(); | 36 static HistogramManager* GetInstance(); |
36 | 37 |
37 private: | 38 private: |
38 friend struct base::DefaultLazyInstanceTraits<HistogramManager>; | 39 friend struct base::DefaultLazyInstanceTraits<HistogramManager>; |
39 | 40 |
40 // base::HistogramFlattener: | 41 // base::HistogramFlattener: |
41 void RecordDelta(const base::HistogramBase& histogram, | 42 void RecordDelta(const base::HistogramBase& histogram, |
42 const base::HistogramSamples& snapshot) override; | 43 const base::HistogramSamples& snapshot) override; |
43 void InconsistencyDetected( | 44 void InconsistencyDetected( |
44 base::HistogramBase::Inconsistency problem) override; | 45 base::HistogramBase::Inconsistency problem) override; |
45 void UniqueInconsistencyDetected( | 46 void UniqueInconsistencyDetected( |
46 base::HistogramBase::Inconsistency problem) override; | 47 base::HistogramBase::Inconsistency problem) override; |
47 void InconsistencyDetectedInLoggedCount(int amount) override; | 48 void InconsistencyDetectedInLoggedCount(int amount) override; |
48 | 49 |
49 base::HistogramSnapshotManager histogram_snapshot_manager_; | 50 base::HistogramSnapshotManager histogram_snapshot_manager_; |
50 | 51 |
51 // Stores the protocol buffer representation for this log. | 52 // Stores the protocol buffer representation for this log. |
52 metrics::ChromeUserMetricsExtension uma_proto_; | 53 metrics::ChromeUserMetricsExtension uma_proto_; |
53 | 54 |
54 DISALLOW_COPY_AND_ASSIGN(HistogramManager); | 55 DISALLOW_COPY_AND_ASSIGN(HistogramManager); |
55 }; | 56 }; |
56 | 57 |
57 } // namespace cronet | 58 } // namespace cronet |
58 | 59 |
59 #endif // COMPONENTS_CRONET_HISTOGRAM_MANAGER_H_ | 60 #endif // COMPONENTS_CRONET_HISTOGRAM_MANAGER_H_ |
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