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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "components/metrics/histogram_manager.h" | |
| 6 | |
| 7 #include <string> | |
| 8 #include <vector> | |
| 9 | |
| 10 #include "base/lazy_instance.h" | |
| 11 #include "base/metrics/histogram.h" | |
| 12 #include "base/metrics/histogram_samples.h" | |
| 13 #include "components/metrics/histogram_encoder.h" | |
| 14 | |
| 15 namespace metrics { | |
| 16 | |
| 17 // TODO(rtenneti): move g_histogram_manager into java code. | |
| 18 static base::LazyInstance<HistogramManager>::Leaky | |
| 19 g_histogram_manager = LAZY_INSTANCE_INITIALIZER; | |
| 20 | |
| 21 HistogramManager::HistogramManager() : histogram_snapshot_manager_(this) { | |
| 22 } | |
| 23 | |
| 24 HistogramManager::~HistogramManager() { | |
| 25 } | |
| 26 | |
| 27 // static | |
| 28 HistogramManager* HistogramManager::GetInstance() { | |
| 29 return g_histogram_manager.Pointer(); | |
| 30 } | |
| 31 | |
| 32 void HistogramManager::RecordDelta(const base::HistogramBase& histogram, | |
| 33 const base::HistogramSamples& snapshot) { | |
| 34 EncodeHistogramDelta(histogram.histogram_name(), snapshot, &uma_proto_); | |
| 35 } | |
| 36 | |
| 37 void HistogramManager::InconsistencyDetected( | |
| 38 base::HistogramBase::Inconsistency problem) { | |
| 39 UMA_HISTOGRAM_ENUMERATION("Histogram.InconsistenciesBrowser.Cronet", | |
| 40 problem, base::HistogramBase::NEVER_EXCEEDED_VALUE); | |
| 41 } | |
| 42 | |
| 43 void HistogramManager::UniqueInconsistencyDetected( | |
| 44 base::HistogramBase::Inconsistency problem) { | |
| 45 UMA_HISTOGRAM_ENUMERATION("Histogram.InconsistenciesBrowserUnique.Cronet", | |
| 46 problem, base::HistogramBase::NEVER_EXCEEDED_VALUE); | |
| 47 } | |
| 48 | |
| 49 void HistogramManager::InconsistencyDetectedInLoggedCount(int amount) { | |
| 50 UMA_HISTOGRAM_COUNTS("Histogram.InconsistentSnapshotBrowser.Cronet", | |
| 51 std::abs(amount)); | |
| 52 } | |
| 53 | |
| 54 bool HistogramManager::GetDeltas(std::vector<uint8>* data) { | |
| 55 // Clear the protobuf between calls. | |
| 56 uma_proto_.Clear(); | |
| 57 histogram_snapshot_manager_.PrepareDeltas( | |
| 58 base::Histogram::kNoFlags, base::Histogram::kUmaTargetedHistogramFlag); | |
| 59 int32_t data_size = uma_proto_.ByteSize(); | |
| 60 data->resize(data_size); | |
| 61 if (uma_proto_.SerializeToArray(&(*data)[0], data_size)) | |
| 62 return true; | |
| 63 data->clear(); | |
| 64 return false; | |
| 65 } | |
| 66 | |
| 67 } // namespace metrics | |
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Chromium Code Reviews
Issue 800363002:
Revert "Add UMA Histogram Manager to Cronet." (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master