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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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