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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
base / metrics / histogram_macros_unittest.cc [blame]
// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/metrics/histogram_macros.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/time/time.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
TEST(ScopedHistogramTimer, ThreeTimersOneScope) {
SCOPED_UMA_HISTOGRAM_TIMER_MICROS("TestShortTimer0");
SCOPED_UMA_HISTOGRAM_TIMER_MICROS("TestShortTimer1");
SCOPED_UMA_HISTOGRAM_TIMER("TestTimer0");
SCOPED_UMA_HISTOGRAM_TIMER("TestTimer1");
SCOPED_UMA_HISTOGRAM_LONG_TIMER("TestLongTimer0");
SCOPED_UMA_HISTOGRAM_LONG_TIMER("TestLongTimer1");
}
// Compile tests for UMA_HISTOGRAM_ENUMERATION with the three different types it
// accepts:
// - integral types
// - unscoped enums
// - scoped enums
TEST(HistogramMacro, IntegralPseudoEnumeration) {
UMA_HISTOGRAM_ENUMERATION("Test.FauxEnumeration", 1, 1000);
}
TEST(HistogramMacro, UnscopedEnumeration) {
enum TestEnum : char {
FIRST_VALUE,
SECOND_VALUE,
THIRD_VALUE,
MAX_ENTRIES,
};
UMA_HISTOGRAM_ENUMERATION("Test.UnscopedEnumeration", SECOND_VALUE,
MAX_ENTRIES);
}
TEST(HistogramMacro, ScopedEnumeration) {
enum class TestEnum {
FIRST_VALUE,
SECOND_VALUE,
THIRD_VALUE,
kMaxValue = THIRD_VALUE,
};
UMA_HISTOGRAM_ENUMERATION("Test.ScopedEnumeration", TestEnum::FIRST_VALUE);
enum class TestEnum2 {
FIRST_VALUE,
SECOND_VALUE,
THIRD_VALUE,
MAX_ENTRIES,
};
UMA_HISTOGRAM_ENUMERATION("Test.ScopedEnumeration2", TestEnum2::SECOND_VALUE,
TestEnum2::MAX_ENTRIES);
}
// Compile tests for UMA_HISTOGRAM_ENUMERATION when the value type is:
// - a const reference to an enum
// - a non-const reference to an enum
TEST(HistogramMacro, EnumerationConstRef) {
enum class TestEnum { kValue, kMaxValue = kValue };
const TestEnum& value_ref = TestEnum::kValue;
UMA_HISTOGRAM_ENUMERATION("Test.ScopedEnumeration3", value_ref);
}
TEST(HistogramMacro, EnumerationNonConstRef) {
enum class TestEnum { kValue, kMaxValue = kValue };
TestEnum value = TestEnum::kValue;
TestEnum& value_ref = value;
UMA_HISTOGRAM_ENUMERATION("Test.ScopedEnumeration4", value_ref);
}
TEST(HistogramMacro, SplitByProcessPriorityMacro) {
TimeTicks mock_now = TimeTicks::Now();
constexpr TimeDelta kMockIntervalBetweenSamples = Seconds(1);
{
// No BestEffort suffix by default (SetSharedLastForegroundTimeForMetrics
// not invoked yet in this process).
HistogramTester tester;
UMA_HISTOGRAM_SPLIT_BY_PROCESS_PRIORITY(UMA_HISTOGRAM_COUNTS_1000, mock_now,
Microseconds(0), "Test.MyCount",
123);
tester.ExpectUniqueSample("Test.MyCount", 123, 1);
tester.ExpectUniqueSample("Test.MyCount.BestEffort", 123, 0);
}
mock_now += kMockIntervalBetweenSamples;
std::atomic<base::TimeTicks> shared_last_foreground_time = mock_now;
internal::SetSharedLastForegroundTimeForMetrics(&shared_last_foreground_time);
{
// No BestEffort suffix while foreground.
HistogramTester tester;
UMA_HISTOGRAM_SPLIT_BY_PROCESS_PRIORITY(UMA_HISTOGRAM_COUNTS_1000, mock_now,
Microseconds(0), "Test.MyCount",
123);
tester.ExpectUniqueSample("Test.MyCount", 123, 1);
tester.ExpectUniqueSample("Test.MyCount.BestEffort", 123, 0);
}
mock_now += kMockIntervalBetweenSamples;
shared_last_foreground_time.store(TimeTicks(), std::memory_order_relaxed);
{
// BestEffort suffix while in BestEffort.
HistogramTester tester;
UMA_HISTOGRAM_SPLIT_BY_PROCESS_PRIORITY(UMA_HISTOGRAM_COUNTS_1000, mock_now,
Microseconds(0), "Test.MyCount",
123);
tester.ExpectUniqueSample("Test.MyCount", 123, 0);
tester.ExpectUniqueSample("Test.MyCount.BestEffort", 123, 1);
}
mock_now += kMockIntervalBetweenSamples;
shared_last_foreground_time.store(mock_now, std::memory_order_relaxed);
{
// No BestEffort suffix once back to normal priority.
HistogramTester tester;
UMA_HISTOGRAM_SPLIT_BY_PROCESS_PRIORITY(UMA_HISTOGRAM_COUNTS_1000, mock_now,
Microseconds(0), "Test.MyCount",
123);
tester.ExpectUniqueSample("Test.MyCount", 123, 1);
tester.ExpectUniqueSample("Test.MyCount.BestEffort", 123, 0);
}
{
// BestEffort suffix while normal priority if the sample_interval overlaps
// into a BestEffort range.
HistogramTester tester;
UMA_HISTOGRAM_SPLIT_BY_PROCESS_PRIORITY(UMA_HISTOGRAM_COUNTS_1000, mock_now,
kMockIntervalBetweenSamples * 1.5,
"Test.MyCount", 123);
tester.ExpectUniqueSample("Test.MyCount", 123, 0);
tester.ExpectUniqueSample("Test.MyCount.BestEffort", 123, 1);
}
{
HistogramTester tester;
// ... and also if the sample was taken at a time before the last foreground
// time:
UMA_HISTOGRAM_SPLIT_BY_PROCESS_PRIORITY(
UMA_HISTOGRAM_COUNTS_1000, mock_now - kMockIntervalBetweenSamples * 1.5,
Microseconds(0), "Test.MyCount", 123);
tester.ExpectUniqueSample("Test.MyCount", 123, 0);
tester.ExpectUniqueSample("Test.MyCount.BestEffort", 123, 1);
}
// Reset the global state at the end of the test.
internal::SetSharedLastForegroundTimeForMetrics(nullptr);
{
// No BestEffort suffix by default, again.
HistogramTester tester;
UMA_HISTOGRAM_SPLIT_BY_PROCESS_PRIORITY(UMA_HISTOGRAM_COUNTS_1000, mock_now,
Microseconds(0), "Test.MyCount",
123);
tester.ExpectUniqueSample("Test.MyCount", 123, 1);
tester.ExpectUniqueSample("Test.MyCount.BestEffort", 123, 0);
}
}
} // namespace base