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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
// Copyright 2016 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/persistent_histogram_allocator.h"
#include "base/files/scoped_temp_dir.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/metrics/bucket_ranges.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/persistent_memory_allocator.h"
#include "base/metrics/statistics_recorder.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
class PersistentHistogramAllocatorTest : public testing::Test {
protected:
const int32_t kAllocatorMemorySize = 64 << 10; // 64 KiB
PersistentHistogramAllocatorTest()
: statistics_recorder_(StatisticsRecorder::CreateTemporaryForTesting()) {
CreatePersistentHistogramAllocator();
}
~PersistentHistogramAllocatorTest() override {
DestroyPersistentHistogramAllocator();
}
void CreatePersistentHistogramAllocator() {
allocator_memory_.reset(new char[kAllocatorMemorySize]);
GlobalHistogramAllocator::ReleaseForTesting();
memset(allocator_memory_.get(), 0, kAllocatorMemorySize);
GlobalHistogramAllocator::GetCreateHistogramResultHistogram();
GlobalHistogramAllocator::CreateWithPersistentMemory(
allocator_memory_.get(), kAllocatorMemorySize, 0, 0,
"PersistentHistogramAllocatorTest");
allocator_ = GlobalHistogramAllocator::Get()->memory_allocator();
}
void DestroyPersistentHistogramAllocator() {
allocator_ = nullptr;
GlobalHistogramAllocator::ReleaseForTesting();
}
std::unique_ptr<StatisticsRecorder> statistics_recorder_;
std::unique_ptr<char[]> allocator_memory_;
PersistentMemoryAllocator* allocator_ = nullptr;
private:
DISALLOW_COPY_AND_ASSIGN(PersistentHistogramAllocatorTest);
};
TEST_F(PersistentHistogramAllocatorTest, CreateAndIterateTest) {
PersistentMemoryAllocator::MemoryInfo meminfo0;
allocator_->GetMemoryInfo(&meminfo0);
// Try basic construction
HistogramBase* histogram = Histogram::FactoryGet(
"TestHistogram", 1, 1000, 10, HistogramBase::kIsPersistent);
EXPECT_TRUE(histogram);
histogram->CheckName("TestHistogram");
PersistentMemoryAllocator::MemoryInfo meminfo1;
allocator_->GetMemoryInfo(&meminfo1);
EXPECT_GT(meminfo0.free, meminfo1.free);
HistogramBase* linear_histogram = LinearHistogram::FactoryGet(
"TestLinearHistogram", 1, 1000, 10, HistogramBase::kIsPersistent);
EXPECT_TRUE(linear_histogram);
linear_histogram->CheckName("TestLinearHistogram");
PersistentMemoryAllocator::MemoryInfo meminfo2;
allocator_->GetMemoryInfo(&meminfo2);
EXPECT_GT(meminfo1.free, meminfo2.free);
HistogramBase* boolean_histogram = BooleanHistogram::FactoryGet(
"TestBooleanHistogram", HistogramBase::kIsPersistent);
EXPECT_TRUE(boolean_histogram);
boolean_histogram->CheckName("TestBooleanHistogram");
PersistentMemoryAllocator::MemoryInfo meminfo3;
allocator_->GetMemoryInfo(&meminfo3);
EXPECT_GT(meminfo2.free, meminfo3.free);
std::vector<int> custom_ranges;
custom_ranges.push_back(1);
custom_ranges.push_back(5);
HistogramBase* custom_histogram = CustomHistogram::FactoryGet(
"TestCustomHistogram", custom_ranges, HistogramBase::kIsPersistent);
EXPECT_TRUE(custom_histogram);
custom_histogram->CheckName("TestCustomHistogram");
PersistentMemoryAllocator::MemoryInfo meminfo4;
allocator_->GetMemoryInfo(&meminfo4);
EXPECT_GT(meminfo3.free, meminfo4.free);
PersistentMemoryAllocator::Iterator iter(allocator_);
uint32_t type;
EXPECT_NE(0U, iter.GetNext(&type)); // Histogram
EXPECT_NE(0U, iter.GetNext(&type)); // LinearHistogram
EXPECT_NE(0U, iter.GetNext(&type)); // BooleanHistogram
EXPECT_NE(0U, iter.GetNext(&type)); // CustomHistogram
EXPECT_EQ(0U, iter.GetNext(&type));
// Create a second allocator and have it access the memory of the first.
std::unique_ptr<HistogramBase> recovered;
PersistentHistogramAllocator recovery(MakeUnique<PersistentMemoryAllocator>(
allocator_memory_.get(), kAllocatorMemorySize, 0, 0, "", false));
PersistentHistogramAllocator::Iterator histogram_iter(&recovery);
recovered = histogram_iter.GetNext();
ASSERT_TRUE(recovered);
recovered->CheckName("TestHistogram");
recovered = histogram_iter.GetNext();
ASSERT_TRUE(recovered);
recovered->CheckName("TestLinearHistogram");
recovered = histogram_iter.GetNext();
ASSERT_TRUE(recovered);
recovered->CheckName("TestBooleanHistogram");
recovered = histogram_iter.GetNext();
ASSERT_TRUE(recovered);
recovered->CheckName("TestCustomHistogram");
recovered = histogram_iter.GetNext();
EXPECT_FALSE(recovered);
}
TEST_F(PersistentHistogramAllocatorTest, CreateWithFileTest) {
const char temp_name[] = "CreateWithFileTest";
ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
FilePath temp_file = temp_dir.GetPath().AppendASCII(temp_name);
const size_t temp_size = 64 << 10; // 64 KiB
// Test creation of a new file.
GlobalHistogramAllocator::ReleaseForTesting();
GlobalHistogramAllocator::CreateWithFile(temp_file, temp_size, 0, temp_name);
EXPECT_EQ(std::string(temp_name),
GlobalHistogramAllocator::Get()->memory_allocator()->Name());
// Test re-open of a possibly-existing file.
GlobalHistogramAllocator::ReleaseForTesting();
GlobalHistogramAllocator::CreateWithFile(temp_file, temp_size, 0, "");
EXPECT_EQ(std::string(temp_name),
GlobalHistogramAllocator::Get()->memory_allocator()->Name());
// Test re-open of an known-existing file.
GlobalHistogramAllocator::ReleaseForTesting();
GlobalHistogramAllocator::CreateWithFile(temp_file, 0, 0, "");
EXPECT_EQ(std::string(temp_name),
GlobalHistogramAllocator::Get()->memory_allocator()->Name());
// Final release so file and temp-dir can be removed.
GlobalHistogramAllocator::ReleaseForTesting();
}
TEST_F(PersistentHistogramAllocatorTest, StatisticsRecorderTest) {
size_t starting_sr_count = StatisticsRecorder::GetHistogramCount();
// Create a local StatisticsRecorder in which the newly created histogram
// will be recorded.
std::unique_ptr<StatisticsRecorder> local_sr =
StatisticsRecorder::CreateTemporaryForTesting();
EXPECT_EQ(0U, StatisticsRecorder::GetHistogramCount());
HistogramBase* histogram = LinearHistogram::FactoryGet(
"TestHistogram", 1, 10, 10, HistogramBase::kIsPersistent);
EXPECT_TRUE(histogram);
EXPECT_EQ(1U, StatisticsRecorder::GetHistogramCount());
histogram->Add(3);
histogram->Add(1);
histogram->Add(4);
histogram->Add(1);
histogram->Add(6);
// Destroy the local SR and ensure that we're back to the initial state.
local_sr.reset();
EXPECT_EQ(starting_sr_count, StatisticsRecorder::GetHistogramCount());
// Create a second allocator and have it access the memory of the first.
std::unique_ptr<HistogramBase> recovered;
PersistentHistogramAllocator recovery(MakeUnique<PersistentMemoryAllocator>(
allocator_memory_.get(), kAllocatorMemorySize, 0, 0, "", false));
PersistentHistogramAllocator::Iterator histogram_iter(&recovery);
recovered = histogram_iter.GetNext();
ASSERT_TRUE(recovered);
// Merge the recovered histogram to the SR. It will always be a new object.
recovery.MergeHistogramDeltaToStatisticsRecorder(recovered.get());
EXPECT_EQ(starting_sr_count + 1, StatisticsRecorder::GetHistogramCount());
HistogramBase* found =
StatisticsRecorder::FindHistogram(recovered->histogram_name());
ASSERT_TRUE(found);
EXPECT_NE(recovered.get(), found);
// Ensure that the data got merged, too.
std::unique_ptr<HistogramSamples> snapshot = found->SnapshotSamples();
EXPECT_EQ(recovered->SnapshotSamples()->TotalCount(), snapshot->TotalCount());
EXPECT_EQ(1, snapshot->GetCount(3));
EXPECT_EQ(2, snapshot->GetCount(1));
EXPECT_EQ(1, snapshot->GetCount(4));
EXPECT_EQ(1, snapshot->GetCount(6));
}
} // namespace base
|
