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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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