1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/metrics/histogram_snapshot_manager.h"
#include <string>
#include <vector>
#include "base/macros.h"
#include "base/metrics/histogram_delta_serialization.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/sample_vector.h"
#include "base/metrics/statistics_recorder.h"
#include "base/stl_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
class HistogramFlattenerDeltaRecorder : public HistogramFlattener {
public:
HistogramFlattenerDeltaRecorder() {}
void RecordDelta(const HistogramBase& histogram,
const HistogramSamples& snapshot) override {
recorded_delta_histogram_names_.push_back(histogram.histogram_name());
// Use CHECK instead of ASSERT to get full stack-trace and thus origin.
CHECK(!ContainsKey(recorded_delta_histogram_sum_,
histogram.histogram_name()));
// Keep pointer to snapshot for testing. This really isn't ideal but the
// snapshot-manager keeps the snapshot alive until it's "forgotten".
recorded_delta_histogram_sum_[histogram.histogram_name()] = snapshot.sum();
}
void InconsistencyDetected(HistogramBase::Inconsistency problem) override {
ASSERT_TRUE(false);
}
void UniqueInconsistencyDetected(
HistogramBase::Inconsistency problem) override {
ASSERT_TRUE(false);
}
void InconsistencyDetectedInLoggedCount(int amount) override {
ASSERT_TRUE(false);
}
void Reset() {
recorded_delta_histogram_names_.clear();
recorded_delta_histogram_sum_.clear();
}
std::vector<std::string> GetRecordedDeltaHistogramNames() {
return recorded_delta_histogram_names_;
}
int64_t GetRecordedDeltaHistogramSum(const std::string& name) {
EXPECT_TRUE(ContainsKey(recorded_delta_histogram_sum_, name));
return recorded_delta_histogram_sum_[name];
}
private:
std::vector<std::string> recorded_delta_histogram_names_;
std::map<std::string, int64_t> recorded_delta_histogram_sum_;
DISALLOW_COPY_AND_ASSIGN(HistogramFlattenerDeltaRecorder);
};
class HistogramSnapshotManagerTest : public testing::Test {
protected:
HistogramSnapshotManagerTest()
: statistics_recorder_(StatisticsRecorder::CreateTemporaryForTesting()),
histogram_snapshot_manager_(&histogram_flattener_delta_recorder_) {}
~HistogramSnapshotManagerTest() override {}
std::unique_ptr<StatisticsRecorder> statistics_recorder_;
HistogramFlattenerDeltaRecorder histogram_flattener_delta_recorder_;
HistogramSnapshotManager histogram_snapshot_manager_;
};
TEST_F(HistogramSnapshotManagerTest, PrepareDeltasNoFlagsFilter) {
// kNoFlags filter should record all histograms.
UMA_HISTOGRAM_ENUMERATION("UmaHistogram", 1, 4);
UMA_STABILITY_HISTOGRAM_ENUMERATION("UmaStabilityHistogram", 1, 2);
histogram_snapshot_manager_.PrepareDeltas(
StatisticsRecorder::begin(false), StatisticsRecorder::end(),
HistogramBase::kNoFlags, HistogramBase::kNoFlags);
const std::vector<std::string>& histograms =
histogram_flattener_delta_recorder_.GetRecordedDeltaHistogramNames();
EXPECT_EQ(2U, histograms.size());
EXPECT_EQ("UmaHistogram", histograms[0]);
EXPECT_EQ("UmaStabilityHistogram", histograms[1]);
}
TEST_F(HistogramSnapshotManagerTest, PrepareDeltasUmaHistogramFlagFilter) {
// Note that kUmaStabilityHistogramFlag includes kUmaTargetedHistogramFlag.
UMA_HISTOGRAM_ENUMERATION("UmaHistogram", 1, 4);
UMA_STABILITY_HISTOGRAM_ENUMERATION("UmaStabilityHistogram", 1, 2);
histogram_snapshot_manager_.PrepareDeltas(
StatisticsRecorder::begin(false), StatisticsRecorder::end(),
HistogramBase::kNoFlags, HistogramBase::kUmaTargetedHistogramFlag);
const std::vector<std::string>& histograms =
histogram_flattener_delta_recorder_.GetRecordedDeltaHistogramNames();
EXPECT_EQ(2U, histograms.size());
EXPECT_EQ("UmaHistogram", histograms[0]);
EXPECT_EQ("UmaStabilityHistogram", histograms[1]);
}
TEST_F(HistogramSnapshotManagerTest,
PrepareDeltasUmaStabilityHistogramFlagFilter) {
UMA_HISTOGRAM_ENUMERATION("UmaHistogram", 1, 4);
UMA_STABILITY_HISTOGRAM_ENUMERATION("UmaStabilityHistogram", 1, 2);
histogram_snapshot_manager_.PrepareDeltas(
StatisticsRecorder::begin(false), StatisticsRecorder::end(),
HistogramBase::kNoFlags, HistogramBase::kUmaStabilityHistogramFlag);
const std::vector<std::string>& histograms =
histogram_flattener_delta_recorder_.GetRecordedDeltaHistogramNames();
EXPECT_EQ(1U, histograms.size());
EXPECT_EQ("UmaStabilityHistogram", histograms[0]);
}
} // namespace base
|
