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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 "net/disk_cache/blockfile/stats_histogram.h" | 5 #include "net/disk_cache/blockfile/stats_histogram.h" |
| 6 | 6 |
| 7 #include "base/debug/leak_annotations.h" | 7 #include "base/debug/leak_annotations.h" |
| 8 #include "base/logging.h" | 8 #include "base/logging.h" |
| 9 #include "base/metrics/bucket_ranges.h" | 9 #include "base/metrics/bucket_ranges.h" |
| 10 #include "base/metrics/histogram_base.h" | 10 #include "base/metrics/histogram_base.h" |
| 11 #include "base/metrics/sample_vector.h" | 11 #include "base/metrics/sample_vector.h" |
| 12 #include "base/metrics/statistics_recorder.h" | 12 #include "base/metrics/statistics_recorder.h" |
| 13 #include "net/disk_cache/blockfile/stats.h" | 13 #include "net/disk_cache/blockfile/stats.h" |
| 14 | 14 |
| 15 namespace disk_cache { | 15 namespace disk_cache { |
| 16 | 16 |
| 17 using base::BucketRanges; | 17 using base::BucketRanges; |
| 18 using base::Histogram; | 18 using base::Histogram; |
| 19 using base::HistogramSamples; | 19 using base::HistogramSamples; |
| 20 using base::SampleVector; | 20 using base::SampleVector; |
| 21 using base::StatisticsRecorder; | 21 using base::StatisticsRecorder; |
| 22 | 22 |
| 23 StatsHistogram::StatsHistogram(const std::string& name, | 23 StatsHistogram::StatsHistogram(const std::string& name, |
| 24 Sample minimum, | 24 Sample minimum, |
| 25 Sample maximum, | 25 Sample maximum, |
| 26 const BucketRanges* ranges, | 26 const BucketRanges* ranges, |
| 27 const Stats* stats) | 27 const Stats* stats) |
| 28 : Histogram(name, minimum, maximum, ranges), | 28 : Histogram(name, minimum, maximum, ranges), stats_(stats) { |
| 29 stats_(stats) {} | 29 } |
| 30 | 30 |
| 31 StatsHistogram::~StatsHistogram() {} | 31 StatsHistogram::~StatsHistogram() { |
| 32 } |
| 32 | 33 |
| 33 // static | 34 // static |
| 34 void StatsHistogram::InitializeBucketRanges(const Stats* stats, | 35 void StatsHistogram::InitializeBucketRanges(const Stats* stats, |
| 35 BucketRanges* ranges) { | 36 BucketRanges* ranges) { |
| 36 for (size_t i = 0; i < ranges->size(); ++i) { | 37 for (size_t i = 0; i < ranges->size(); ++i) { |
| 37 ranges->set_range(i, stats->GetBucketRange(i)); | 38 ranges->set_range(i, stats->GetBucketRange(i)); |
| 38 } | 39 } |
| 39 ranges->ResetChecksum(); | 40 ranges->ResetChecksum(); |
| 40 } | 41 } |
| 41 | 42 |
| (...skipping 28 matching lines...) Expand all Loading... |
| 70 return return_histogram; | 71 return return_histogram; |
| 71 } | 72 } |
| 72 | 73 |
| 73 void StatsHistogram::Disable() { | 74 void StatsHistogram::Disable() { |
| 74 stats_ = NULL; | 75 stats_ = NULL; |
| 75 } | 76 } |
| 76 | 77 |
| 77 scoped_ptr<HistogramSamples> StatsHistogram::SnapshotSamples() const { | 78 scoped_ptr<HistogramSamples> StatsHistogram::SnapshotSamples() const { |
| 78 scoped_ptr<SampleVector> samples(new SampleVector(bucket_ranges())); | 79 scoped_ptr<SampleVector> samples(new SampleVector(bucket_ranges())); |
| 79 if (stats_) | 80 if (stats_) |
| 80 stats_->Snapshot(samples.get()); | 81 stats_->Snapshot(samples.get()); |
| 81 | 82 |
| 82 // Only report UMA data once. | 83 // Only report UMA data once. |
| 83 StatsHistogram* mutable_me = const_cast<StatsHistogram*>(this); | 84 StatsHistogram* mutable_me = const_cast<StatsHistogram*>(this); |
| 84 mutable_me->ClearFlags(kUmaTargetedHistogramFlag); | 85 mutable_me->ClearFlags(kUmaTargetedHistogramFlag); |
| 85 | 86 |
| 86 return samples.PassAs<HistogramSamples>(); | 87 return samples.PassAs<HistogramSamples>(); |
| 87 } | 88 } |
| 88 | 89 |
| 89 int StatsHistogram::FindCorruption(const HistogramSamples& samples) const { | 90 int StatsHistogram::FindCorruption(const HistogramSamples& samples) const { |
| 90 // This class won't monitor inconsistencies. | 91 // This class won't monitor inconsistencies. |
| 91 return HistogramBase::NO_INCONSISTENCIES; | 92 return HistogramBase::NO_INCONSISTENCIES; |
| 92 } | 93 } |
| 93 | 94 |
| 94 } // namespace disk_cache | 95 } // namespace disk_cache |
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