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Side by Side Diff: base/allocator/type_profiler_unittest.cc

Issue 1331973002: Remove clang type profiler and deep memory profiler. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: . Created 5 years, 3 months ago
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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 // This is a unittest set for type_profiler. It is independent from other
6 // tests and executed manually like allocator_unittests since type_profiler_map
7 // used in type_profiler is a singleton (like TCMalloc's heap-profiler), and
8 // it requires RTTI and different compiling/linking options from others
9 //
10 // It tests that the profiler doesn't fail in suspicous cases. For example,
11 // 'new' is not profiled, but 'delete' for the created object is profiled.
12
13 #if defined(TYPE_PROFILING)
14
15 #include "base/allocator/type_profiler.h"
16 #include "base/allocator/type_profiler_control.h"
17 #include "base/allocator/type_profiler_tcmalloc.h"
18 #include "base/basictypes.h"
19 #include "testing/gtest/include/gtest/gtest.h"
20 #include "third_party/tcmalloc/chromium/src/gperftools/type_profiler_map.h"
21
22 namespace base {
23 namespace type_profiler {
24
25 class TypeProfilerTest : public testing::Test {
26 public:
27 TypeProfilerTest() {}
28
29 void SetInterceptFunctions() {
30 InterceptFunctions::SetFunctions(NewInterceptForTCMalloc,
31 DeleteInterceptForTCMalloc);
32 }
33
34 void ResetInterceptFunctions() {
35 InterceptFunctions::ResetFunctions();
36 }
37
38 void SetUp() {
39 SetInterceptFunctions();
40 }
41
42 void TearDown() {
43 ResetInterceptFunctions();
44 }
45
46 protected:
47 static const size_t kDummyArraySize;
48 static const void* const kConstNull;
49
50 private:
51 DISALLOW_COPY_AND_ASSIGN(TypeProfilerTest);
52 };
53
54 const size_t TypeProfilerTest::kDummyArraySize = 10;
55 const void* const TypeProfilerTest::kConstNull = static_cast<const void*>(NULL);
56
57 TEST_F(TypeProfilerTest, TestNormalProfiling) {
58 int* dummy = new int(48);
59 const std::type_info* type;
60
61 type = LookupType(dummy);
62 ASSERT_NE(kConstNull, type);
63 EXPECT_STREQ(typeid(int).name(), type->name());
64 delete dummy;
65
66 type = LookupType(dummy);
67 EXPECT_EQ(kConstNull, type);
68 }
69
70 TEST_F(TypeProfilerTest, TestNormalArrayProfiling) {
71 int* dummy = new int[kDummyArraySize];
72 const std::type_info* type;
73
74 type = LookupType(dummy);
75 ASSERT_NE(kConstNull, type);
76 // For an array, the profiler remembers its base type.
77 EXPECT_STREQ(typeid(int).name(), type->name());
78 delete[] dummy;
79
80 type = LookupType(dummy);
81 EXPECT_EQ(kConstNull, type);
82 }
83
84 TEST_F(TypeProfilerTest, TestRepeatedNewAndDelete) {
85 int *dummy[kDummyArraySize];
86 const std::type_info* type;
87 for (int i = 0; i < kDummyArraySize; ++i)
88 dummy[i] = new int(i);
89
90 for (int i = 0; i < kDummyArraySize; ++i) {
91 type = LookupType(dummy[i]);
92 ASSERT_NE(kConstNull, type);
93 EXPECT_STREQ(typeid(int).name(), type->name());
94 }
95
96 for (int i = 0; i < kDummyArraySize; ++i) {
97 delete dummy[i];
98 type = LookupType(dummy[i]);
99 ASSERT_EQ(kConstNull, type);
100 }
101 }
102
103 TEST_F(TypeProfilerTest, TestMultipleNewWithDroppingDelete) {
104 static const size_t large_size = 256 * 1024;
105
106 char* dummy_char = new char[large_size / sizeof(*dummy_char)];
107 const std::type_info* type;
108
109 type = LookupType(dummy_char);
110 ASSERT_NE(kConstNull, type);
111 EXPECT_STREQ(typeid(char).name(), type->name());
112
113 // Call "::operator delete" directly to drop __op_delete_intercept__.
114 ::operator delete[](dummy_char);
115
116 type = LookupType(dummy_char);
117 ASSERT_NE(kConstNull, type);
118 EXPECT_STREQ(typeid(char).name(), type->name());
119
120 // Allocates a little different size.
121 int* dummy_int = new int[large_size / sizeof(*dummy_int) - 1];
122
123 // We expect that tcmalloc returns the same address for these large (over 32k)
124 // allocation calls. It usually happens, but maybe probablistic.
125 ASSERT_EQ(static_cast<void*>(dummy_char), static_cast<void*>(dummy_int)) <<
126 "two new (malloc) calls didn't return the same address; retry it.";
127
128 type = LookupType(dummy_int);
129 ASSERT_NE(kConstNull, type);
130 EXPECT_STREQ(typeid(int).name(), type->name());
131
132 delete[] dummy_int;
133
134 type = LookupType(dummy_int);
135 EXPECT_EQ(kConstNull, type);
136 }
137
138 TEST_F(TypeProfilerTest, TestProfileDeleteWithoutProfiledNew) {
139 // 'dummy' should be new'ed in this test before intercept functions are set.
140 ResetInterceptFunctions();
141
142 int* dummy = new int(48);
143 const std::type_info* type;
144
145 // Set intercept functions again after 'dummy' is new'ed.
146 SetInterceptFunctions();
147
148 delete dummy;
149
150 type = LookupType(dummy);
151 EXPECT_EQ(kConstNull, type);
152
153 ResetInterceptFunctions();
154 }
155
156 TEST_F(TypeProfilerTest, TestProfileNewWithoutProfiledDelete) {
157 int* dummy = new int(48);
158 const std::type_info* type;
159
160 EXPECT_TRUE(Controller::IsProfiling());
161
162 // Stop profiling before deleting 'dummy'.
163 Controller::Stop();
164 EXPECT_FALSE(Controller::IsProfiling());
165
166 delete dummy;
167
168 // NOTE: We accept that a profile entry remains when a profiled object is
169 // deleted after Controller::Stop().
170 type = LookupType(dummy);
171 ASSERT_NE(kConstNull, type);
172 EXPECT_STREQ(typeid(int).name(), type->name());
173
174 Controller::Restart();
175 EXPECT_TRUE(Controller::IsProfiling());
176
177 // Remove manually since 'dummy' is not removed from type_profiler_map.
178 EraseType(dummy);
179 }
180
181 } // namespace type_profiler
182 } // namespace base
183
184 #endif // defined(TYPE_PROFILING)
185
186 int main(int argc, char** argv) {
187 testing::InitGoogleTest(&argc, argv);
188 return RUN_ALL_TESTS();
189 }
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