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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 #include "base/metrics/sparse_histogram.h" | 5 #include "base/metrics/sparse_histogram.h" |
6 | 6 |
7 #include <utility> | 7 #include <utility> |
8 | 8 |
9 #include "base/metrics/metrics_hashes.h" | 9 #include "base/metrics/metrics_hashes.h" |
10 #include "base/metrics/sample_map.h" | 10 #include "base/metrics/sample_map.h" |
11 #include "base/metrics/statistics_recorder.h" | 11 #include "base/metrics/statistics_recorder.h" |
12 #include "base/pickle.h" | 12 #include "base/pickle.h" |
13 #include "base/strings/stringprintf.h" | 13 #include "base/strings/stringprintf.h" |
14 #include "base/synchronization/lock.h" | 14 #include "base/synchronization/lock.h" |
15 | 15 |
16 namespace base { | 16 namespace base { |
17 | 17 |
18 typedef HistogramBase::Count Count; | 18 typedef HistogramBase::Count Count; |
19 typedef HistogramBase::Sample Sample; | 19 typedef HistogramBase::Sample Sample; |
20 | 20 |
21 // static | 21 // static |
22 HistogramBase* SparseHistogram::FactoryGet(const std::string& name, | 22 HistogramBase* SparseHistogram::FactoryGet(const std::string& name, |
23 int32 flags) { | 23 int32_t flags) { |
24 HistogramBase* histogram = StatisticsRecorder::FindHistogram(name); | 24 HistogramBase* histogram = StatisticsRecorder::FindHistogram(name); |
25 | 25 |
26 if (!histogram) { | 26 if (!histogram) { |
27 // To avoid racy destruction at shutdown, the following will be leaked. | 27 // To avoid racy destruction at shutdown, the following will be leaked. |
28 HistogramBase* tentative_histogram = new SparseHistogram(name); | 28 HistogramBase* tentative_histogram = new SparseHistogram(name); |
29 tentative_histogram->SetFlags(flags); | 29 tentative_histogram->SetFlags(flags); |
30 histogram = | 30 histogram = |
31 StatisticsRecorder::RegisterOrDeleteDuplicate(tentative_histogram); | 31 StatisticsRecorder::RegisterOrDeleteDuplicate(tentative_histogram); |
32 } | 32 } |
33 DCHECK_EQ(SPARSE_HISTOGRAM, histogram->GetHistogramType()); | 33 DCHECK_EQ(SPARSE_HISTOGRAM, histogram->GetHistogramType()); |
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117 flags &= ~HistogramBase::kIPCSerializationSourceFlag; | 117 flags &= ~HistogramBase::kIPCSerializationSourceFlag; |
118 | 118 |
119 return SparseHistogram::FactoryGet(histogram_name, flags); | 119 return SparseHistogram::FactoryGet(histogram_name, flags); |
120 } | 120 } |
121 | 121 |
122 void SparseHistogram::GetParameters(DictionaryValue* params) const { | 122 void SparseHistogram::GetParameters(DictionaryValue* params) const { |
123 // TODO(kaiwang): Implement. (See HistogramBase::WriteJSON.) | 123 // TODO(kaiwang): Implement. (See HistogramBase::WriteJSON.) |
124 } | 124 } |
125 | 125 |
126 void SparseHistogram::GetCountAndBucketData(Count* count, | 126 void SparseHistogram::GetCountAndBucketData(Count* count, |
127 int64* sum, | 127 int64_t* sum, |
128 ListValue* buckets) const { | 128 ListValue* buckets) const { |
129 // TODO(kaiwang): Implement. (See HistogramBase::WriteJSON.) | 129 // TODO(kaiwang): Implement. (See HistogramBase::WriteJSON.) |
130 } | 130 } |
131 | 131 |
132 void SparseHistogram::WriteAsciiImpl(bool graph_it, | 132 void SparseHistogram::WriteAsciiImpl(bool graph_it, |
133 const std::string& newline, | 133 const std::string& newline, |
134 std::string* output) const { | 134 std::string* output) const { |
135 // Get a local copy of the data so we are consistent. | 135 // Get a local copy of the data so we are consistent. |
136 scoped_ptr<HistogramSamples> snapshot = SnapshotSamples(); | 136 scoped_ptr<HistogramSamples> snapshot = SnapshotSamples(); |
137 Count total_count = snapshot->TotalCount(); | 137 Count total_count = snapshot->TotalCount(); |
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186 std::string* output) const { | 186 std::string* output) const { |
187 StringAppendF(output, | 187 StringAppendF(output, |
188 "Histogram: %s recorded %d samples", | 188 "Histogram: %s recorded %d samples", |
189 histogram_name().c_str(), | 189 histogram_name().c_str(), |
190 total_count); | 190 total_count); |
191 if (flags() & ~kHexRangePrintingFlag) | 191 if (flags() & ~kHexRangePrintingFlag) |
192 StringAppendF(output, " (flags = 0x%x)", flags() & ~kHexRangePrintingFlag); | 192 StringAppendF(output, " (flags = 0x%x)", flags() & ~kHexRangePrintingFlag); |
193 } | 193 } |
194 | 194 |
195 } // namespace base | 195 } // namespace base |
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