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117 lines
4.4 KiB
117 lines
4.4 KiB
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/metrics/histogram_snapshot_manager.h"
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#include <string>
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#include <vector>
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#include "base/macros.h"
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#include "base/metrics/histogram_delta_serialization.h"
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#include "base/metrics/histogram_macros.h"
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#include "base/metrics/sample_vector.h"
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#include "base/metrics/statistics_recorder.h"
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#include "base/stl_util.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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class HistogramFlattenerDeltaRecorder : public HistogramFlattener {
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public:
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HistogramFlattenerDeltaRecorder() = default;
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void RecordDelta(const HistogramBase& histogram,
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const HistogramSamples& snapshot) override {
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recorded_delta_histogram_names_.push_back(histogram.histogram_name());
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// Use CHECK instead of ASSERT to get full stack-trace and thus origin.
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CHECK(!ContainsKey(recorded_delta_histogram_sum_,
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histogram.histogram_name()));
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// Keep pointer to snapshot for testing. This really isn't ideal but the
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// snapshot-manager keeps the snapshot alive until it's "forgotten".
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recorded_delta_histogram_sum_[histogram.histogram_name()] = snapshot.sum();
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}
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void Reset() {
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recorded_delta_histogram_names_.clear();
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recorded_delta_histogram_sum_.clear();
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}
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std::vector<std::string> GetRecordedDeltaHistogramNames() {
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return recorded_delta_histogram_names_;
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}
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int64_t GetRecordedDeltaHistogramSum(const std::string& name) {
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EXPECT_TRUE(ContainsKey(recorded_delta_histogram_sum_, name));
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return recorded_delta_histogram_sum_[name];
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}
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private:
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std::vector<std::string> recorded_delta_histogram_names_;
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std::map<std::string, int64_t> recorded_delta_histogram_sum_;
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DISALLOW_COPY_AND_ASSIGN(HistogramFlattenerDeltaRecorder);
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};
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class HistogramSnapshotManagerTest : public testing::Test {
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protected:
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HistogramSnapshotManagerTest()
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: statistics_recorder_(StatisticsRecorder::CreateTemporaryForTesting()),
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histogram_snapshot_manager_(&histogram_flattener_delta_recorder_) {}
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~HistogramSnapshotManagerTest() override = default;
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std::unique_ptr<StatisticsRecorder> statistics_recorder_;
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HistogramFlattenerDeltaRecorder histogram_flattener_delta_recorder_;
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HistogramSnapshotManager histogram_snapshot_manager_;
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};
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TEST_F(HistogramSnapshotManagerTest, PrepareDeltasNoFlagsFilter) {
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// kNoFlags filter should record all histograms.
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UMA_HISTOGRAM_ENUMERATION("UmaHistogram", 1, 4);
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UMA_STABILITY_HISTOGRAM_ENUMERATION("UmaStabilityHistogram", 1, 2);
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StatisticsRecorder::PrepareDeltas(false, HistogramBase::kNoFlags,
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HistogramBase::kNoFlags,
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&histogram_snapshot_manager_);
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const std::vector<std::string>& histograms =
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histogram_flattener_delta_recorder_.GetRecordedDeltaHistogramNames();
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EXPECT_EQ(2U, histograms.size());
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EXPECT_EQ("UmaHistogram", histograms[0]);
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EXPECT_EQ("UmaStabilityHistogram", histograms[1]);
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}
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TEST_F(HistogramSnapshotManagerTest, PrepareDeltasUmaHistogramFlagFilter) {
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// Note that kUmaStabilityHistogramFlag includes kUmaTargetedHistogramFlag.
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UMA_HISTOGRAM_ENUMERATION("UmaHistogram", 1, 4);
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UMA_STABILITY_HISTOGRAM_ENUMERATION("UmaStabilityHistogram", 1, 2);
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StatisticsRecorder::PrepareDeltas(false, HistogramBase::kNoFlags,
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HistogramBase::kUmaTargetedHistogramFlag,
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&histogram_snapshot_manager_);
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const std::vector<std::string>& histograms =
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histogram_flattener_delta_recorder_.GetRecordedDeltaHistogramNames();
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EXPECT_EQ(2U, histograms.size());
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EXPECT_EQ("UmaHistogram", histograms[0]);
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EXPECT_EQ("UmaStabilityHistogram", histograms[1]);
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}
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TEST_F(HistogramSnapshotManagerTest,
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PrepareDeltasUmaStabilityHistogramFlagFilter) {
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UMA_HISTOGRAM_ENUMERATION("UmaHistogram", 1, 4);
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UMA_STABILITY_HISTOGRAM_ENUMERATION("UmaStabilityHistogram", 1, 2);
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StatisticsRecorder::PrepareDeltas(false, HistogramBase::kNoFlags,
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HistogramBase::kUmaStabilityHistogramFlag,
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&histogram_snapshot_manager_);
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const std::vector<std::string>& histograms =
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histogram_flattener_delta_recorder_.GetRecordedDeltaHistogramNames();
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EXPECT_EQ(1U, histograms.size());
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EXPECT_EQ("UmaStabilityHistogram", histograms[0]);
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}
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} // namespace base
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