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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 #ifndef BASE_METRICS_SPARSE_HISTOGRAM_H_ | 5 #ifndef BASE_METRICS_SPARSE_HISTOGRAM_H_ |
6 #define BASE_METRICS_SPARSE_HISTOGRAM_H_ | 6 #define BASE_METRICS_SPARSE_HISTOGRAM_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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73 HistogramType GetHistogramType() const override; | 73 HistogramType GetHistogramType() const override; |
74 bool HasConstructionArguments(Sample expected_minimum, | 74 bool HasConstructionArguments(Sample expected_minimum, |
75 Sample expected_maximum, | 75 Sample expected_maximum, |
76 uint32_t expected_bucket_count) const override; | 76 uint32_t expected_bucket_count) const override; |
77 void Add(Sample value) override; | 77 void Add(Sample value) override; |
78 void AddCount(Sample value, int count) override; | 78 void AddCount(Sample value, int count) override; |
79 void AddSamples(const HistogramSamples& samples) override; | 79 void AddSamples(const HistogramSamples& samples) override; |
80 bool AddSamplesFromPickle(base::PickleIterator* iter) override; | 80 bool AddSamplesFromPickle(base::PickleIterator* iter) override; |
81 std::unique_ptr<HistogramSamples> SnapshotSamples() const override; | 81 std::unique_ptr<HistogramSamples> SnapshotSamples() const override; |
82 std::unique_ptr<HistogramSamples> SnapshotDelta() override; | 82 std::unique_ptr<HistogramSamples> SnapshotDelta() override; |
83 void WriteHTMLGraph(std::string* output) const override; | 83 void WriteHTMLGraph(const HistogramSamples* snapshot, |
84 void WriteAscii(std::string* output) const override; | 84 std::string* output) const override; |
| 85 void WriteAscii(const HistogramSamples* snapshot, |
| 86 std::string* output) const override; |
85 | 87 |
86 protected: | 88 protected: |
87 // HistogramBase implementation: | 89 // HistogramBase implementation: |
88 bool SerializeInfoImpl(base::Pickle* pickle) const override; | 90 bool SerializeInfoImpl(base::Pickle* pickle) const override; |
89 | 91 |
90 private: | 92 private: |
91 // Clients should always use FactoryGet to create SparseHistogram. | 93 // Clients should always use FactoryGet to create SparseHistogram. |
92 explicit SparseHistogram(const std::string& name); | 94 explicit SparseHistogram(const std::string& name); |
93 | 95 |
94 SparseHistogram(PersistentMemoryAllocator* allocator, | 96 SparseHistogram(PersistentMemoryAllocator* allocator, |
95 const std::string& name, | 97 const std::string& name, |
96 HistogramSamples::Metadata* meta, | 98 HistogramSamples::Metadata* meta, |
97 HistogramSamples::Metadata* logged_meta); | 99 HistogramSamples::Metadata* logged_meta); |
98 | 100 |
99 friend BASE_EXPORT HistogramBase* DeserializeHistogramInfo( | 101 friend BASE_EXPORT HistogramBase* DeserializeHistogramInfo( |
100 base::PickleIterator* iter); | 102 base::PickleIterator* iter); |
101 static HistogramBase* DeserializeInfoImpl(base::PickleIterator* iter); | 103 static HistogramBase* DeserializeInfoImpl(base::PickleIterator* iter); |
102 | 104 |
103 void GetParameters(DictionaryValue* params) const override; | 105 void GetParameters(DictionaryValue* params) const override; |
104 void GetCountAndBucketData(Count* count, | 106 void GetCountAndBucketData(Count* count, |
105 int64_t* sum, | 107 int64_t* sum, |
106 ListValue* buckets) const override; | 108 ListValue* buckets) const override; |
107 | 109 |
108 // Helpers for emitting Ascii graphic. Each method appends data to output. | 110 // Helpers for emitting Ascii graphic. Each method appends data to output. |
109 void WriteAsciiImpl(bool graph_it, | 111 void WriteAsciiImpl(bool graph_it, |
110 const std::string& newline, | 112 const std::string& newline, |
| 113 const HistogramSamples* snapshot, |
111 std::string* output) const; | 114 std::string* output) const; |
112 | 115 |
113 // Write a common header message describing this histogram. | 116 // Write a common header message describing this histogram. |
114 void WriteAsciiHeader(const Count total_count, | 117 void WriteAsciiHeader(const Count total_count, |
115 std::string* output) const; | 118 std::string* output) const; |
116 | 119 |
117 // For constuctor calling. | 120 // For constuctor calling. |
118 friend class SparseHistogramTest; | 121 friend class SparseHistogramTest; |
119 | 122 |
120 // Protects access to |samples_|. | 123 // Protects access to |samples_|. |
121 mutable base::Lock lock_; | 124 mutable base::Lock lock_; |
122 | 125 |
123 std::unique_ptr<HistogramSamples> samples_; | 126 std::unique_ptr<HistogramSamples> samples_; |
124 std::unique_ptr<HistogramSamples> logged_samples_; | 127 std::unique_ptr<HistogramSamples> logged_samples_; |
125 | 128 |
126 DISALLOW_COPY_AND_ASSIGN(SparseHistogram); | 129 DISALLOW_COPY_AND_ASSIGN(SparseHistogram); |
127 }; | 130 }; |
128 | 131 |
129 } // namespace base | 132 } // namespace base |
130 | 133 |
131 #endif // BASE_METRICS_SPARSE_HISTOGRAM_H_ | 134 #endif // BASE_METRICS_SPARSE_HISTOGRAM_H_ |
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