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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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