class_linker_test.cc revision 4ef12f5b0e26c6016c87866f6a33da5ed8e98d74
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "class_linker.h" 18 19#include <memory> 20#include <string> 21 22#include "class_linker-inl.h" 23#include "common_runtime_test.h" 24#include "dex_file.h" 25#include "entrypoints/entrypoint_utils-inl.h" 26#include "field_helper.h" 27#include "gc/heap.h" 28#include "mirror/art_field-inl.h" 29#include "mirror/art_method.h" 30#include "mirror/art_method-inl.h" 31#include "mirror/class-inl.h" 32#include "mirror/dex_cache.h" 33#include "mirror/object-inl.h" 34#include "mirror/object_array-inl.h" 35#include "mirror/proxy.h" 36#include "mirror/reference.h" 37#include "mirror/stack_trace_element.h" 38#include "mirror/string-inl.h" 39#include "handle_scope-inl.h" 40#include "scoped_thread_state_change.h" 41#include "thread-inl.h" 42 43namespace art { 44 45class ClassLinkerTest : public CommonRuntimeTest { 46 protected: 47 void AssertNonExistentClass(const std::string& descriptor) 48 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 49 Thread* self = Thread::Current(); 50 EXPECT_TRUE(class_linker_->FindSystemClass(self, descriptor.c_str()) == NULL); 51 EXPECT_TRUE(self->IsExceptionPending()); 52 mirror::Object* exception = self->GetException(NULL); 53 self->ClearException(); 54 mirror::Class* exception_class = 55 class_linker_->FindSystemClass(self, "Ljava/lang/NoClassDefFoundError;"); 56 EXPECT_TRUE(exception->InstanceOf(exception_class)); 57 } 58 59 void AssertPrimitiveClass(const std::string& descriptor) 60 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 61 Thread* self = Thread::Current(); 62 AssertPrimitiveClass(descriptor, class_linker_->FindSystemClass(self, descriptor.c_str())); 63 } 64 65 void AssertPrimitiveClass(const std::string& descriptor, mirror::Class* primitive) 66 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 67 ASSERT_TRUE(primitive != NULL); 68 ASSERT_TRUE(primitive->GetClass() != NULL); 69 ASSERT_EQ(primitive->GetClass(), primitive->GetClass()->GetClass()); 70 EXPECT_TRUE(primitive->GetClass()->GetSuperClass() != NULL); 71 ASSERT_STREQ(descriptor.c_str(), primitive->GetDescriptor().c_str()); 72 EXPECT_TRUE(primitive->GetSuperClass() == NULL); 73 EXPECT_FALSE(primitive->HasSuperClass()); 74 EXPECT_TRUE(primitive->GetClassLoader() == NULL); 75 EXPECT_EQ(mirror::Class::kStatusInitialized, primitive->GetStatus()); 76 EXPECT_FALSE(primitive->IsErroneous()); 77 EXPECT_TRUE(primitive->IsLoaded()); 78 EXPECT_TRUE(primitive->IsResolved()); 79 EXPECT_TRUE(primitive->IsVerified()); 80 EXPECT_TRUE(primitive->IsInitialized()); 81 EXPECT_FALSE(primitive->IsArrayInstance()); 82 EXPECT_FALSE(primitive->IsArrayClass()); 83 EXPECT_TRUE(primitive->GetComponentType() == NULL); 84 EXPECT_FALSE(primitive->IsInterface()); 85 EXPECT_TRUE(primitive->IsPublic()); 86 EXPECT_TRUE(primitive->IsFinal()); 87 EXPECT_TRUE(primitive->IsPrimitive()); 88 EXPECT_FALSE(primitive->IsSynthetic()); 89 EXPECT_EQ(0U, primitive->NumDirectMethods()); 90 EXPECT_EQ(0U, primitive->NumVirtualMethods()); 91 EXPECT_EQ(0U, primitive->NumInstanceFields()); 92 EXPECT_EQ(0U, primitive->NumStaticFields()); 93 EXPECT_EQ(0U, primitive->NumDirectInterfaces()); 94 EXPECT_FALSE(primitive->HasVTable()); 95 EXPECT_EQ(0, primitive->GetIfTableCount()); 96 EXPECT_TRUE(primitive->GetIfTable() == NULL); 97 EXPECT_EQ(kAccPublic | kAccFinal | kAccAbstract, primitive->GetAccessFlags()); 98 } 99 100 void AssertArrayClass(const std::string& array_descriptor, 101 const std::string& component_type, 102 mirror::ClassLoader* class_loader) 103 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 104 Thread* self = Thread::Current(); 105 StackHandleScope<2> hs(self); 106 Handle<mirror::ClassLoader> loader(hs.NewHandle(class_loader)); 107 Handle<mirror::Class> array( 108 hs.NewHandle(class_linker_->FindClass(self, array_descriptor.c_str(), loader))); 109 EXPECT_STREQ(component_type.c_str(), array->GetComponentType()->GetDescriptor().c_str()); 110 EXPECT_EQ(class_loader, array->GetClassLoader()); 111 EXPECT_EQ(kAccFinal | kAccAbstract, (array->GetAccessFlags() & (kAccFinal | kAccAbstract))); 112 AssertArrayClass(array_descriptor, array); 113 } 114 115 void AssertArrayClass(const std::string& array_descriptor, Handle<mirror::Class> array) 116 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 117 ASSERT_TRUE(array.Get() != NULL); 118 ASSERT_TRUE(array->GetClass() != NULL); 119 ASSERT_EQ(array->GetClass(), array->GetClass()->GetClass()); 120 EXPECT_TRUE(array->GetClass()->GetSuperClass() != NULL); 121 ASSERT_STREQ(array_descriptor.c_str(), array->GetDescriptor().c_str()); 122 EXPECT_TRUE(array->GetSuperClass() != NULL); 123 Thread* self = Thread::Current(); 124 EXPECT_EQ(class_linker_->FindSystemClass(self, "Ljava/lang/Object;"), array->GetSuperClass()); 125 EXPECT_TRUE(array->HasSuperClass()); 126 ASSERT_TRUE(array->GetComponentType() != NULL); 127 ASSERT_TRUE(!array->GetComponentType()->GetDescriptor().empty()); 128 EXPECT_EQ(mirror::Class::kStatusInitialized, array->GetStatus()); 129 EXPECT_FALSE(array->IsErroneous()); 130 EXPECT_TRUE(array->IsLoaded()); 131 EXPECT_TRUE(array->IsResolved()); 132 EXPECT_TRUE(array->IsVerified()); 133 EXPECT_TRUE(array->IsInitialized()); 134 EXPECT_FALSE(array->IsArrayInstance()); 135 EXPECT_TRUE(array->IsArrayClass()); 136 EXPECT_FALSE(array->IsInterface()); 137 EXPECT_EQ(array->GetComponentType()->IsPublic(), array->IsPublic()); 138 EXPECT_TRUE(array->IsFinal()); 139 EXPECT_FALSE(array->IsPrimitive()); 140 EXPECT_FALSE(array->IsSynthetic()); 141 EXPECT_EQ(0U, array->NumDirectMethods()); 142 EXPECT_EQ(0U, array->NumVirtualMethods()); 143 EXPECT_EQ(0U, array->NumInstanceFields()); 144 EXPECT_EQ(0U, array->NumStaticFields()); 145 EXPECT_EQ(2U, array->NumDirectInterfaces()); 146 EXPECT_TRUE(array->ShouldHaveEmbeddedImtAndVTable()); 147 EXPECT_EQ(2, array->GetIfTableCount()); 148 ASSERT_TRUE(array->GetIfTable() != NULL); 149 mirror::Class* direct_interface0 = mirror::Class::GetDirectInterface(self, array, 0); 150 EXPECT_TRUE(direct_interface0 != nullptr); 151 EXPECT_STREQ(direct_interface0->GetDescriptor().c_str(), "Ljava/lang/Cloneable;"); 152 mirror::Class* direct_interface1 = mirror::Class::GetDirectInterface(self, array, 1); 153 EXPECT_STREQ(direct_interface1->GetDescriptor().c_str(), "Ljava/io/Serializable;"); 154 mirror::Class* array_ptr = array->GetComponentType(); 155 EXPECT_EQ(class_linker_->FindArrayClass(self, &array_ptr), array.Get()); 156 } 157 158 void AssertMethod(mirror::ArtMethod* method) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 159 EXPECT_TRUE(method != nullptr); 160 EXPECT_TRUE(method->GetClass() != nullptr); 161 EXPECT_TRUE(method->GetName() != nullptr); 162 EXPECT_TRUE(method->GetSignature() != Signature::NoSignature()); 163 164 EXPECT_TRUE(method->GetDexCacheStrings() != nullptr); 165 EXPECT_TRUE(method->HasDexCacheResolvedMethods()); 166 EXPECT_TRUE(method->HasDexCacheResolvedTypes()); 167 EXPECT_EQ(method->GetDeclaringClass()->GetDexCache()->GetStrings(), 168 method->GetDexCacheStrings()); 169 EXPECT_TRUE(method->HasSameDexCacheResolvedMethods( 170 method->GetDeclaringClass()->GetDexCache()->GetResolvedMethods())); 171 EXPECT_TRUE(method->HasSameDexCacheResolvedTypes( 172 method->GetDeclaringClass()->GetDexCache()->GetResolvedTypes())); 173 } 174 175 void AssertField(mirror::Class* klass, mirror::ArtField* field) 176 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 177 EXPECT_TRUE(field != NULL); 178 EXPECT_TRUE(field->GetClass() != NULL); 179 EXPECT_EQ(klass, field->GetDeclaringClass()); 180 EXPECT_TRUE(field->GetName() != NULL); 181 StackHandleScope<1> hs(Thread::Current()); 182 FieldHelper fh(hs.NewHandle(field)); 183 EXPECT_TRUE(fh.GetType() != NULL); 184 } 185 186 void AssertClass(const std::string& descriptor, Handle<mirror::Class> klass) 187 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 188 EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor().c_str()); 189 if (descriptor == "Ljava/lang/Object;") { 190 EXPECT_FALSE(klass->HasSuperClass()); 191 } else { 192 EXPECT_TRUE(klass->HasSuperClass()); 193 EXPECT_TRUE(klass->GetSuperClass() != NULL); 194 } 195 EXPECT_TRUE(klass->GetClass() != NULL); 196 EXPECT_EQ(klass->GetClass(), klass->GetClass()->GetClass()); 197 EXPECT_TRUE(klass->GetDexCache() != NULL); 198 EXPECT_TRUE(klass->IsLoaded()); 199 EXPECT_TRUE(klass->IsResolved()); 200 EXPECT_FALSE(klass->IsErroneous()); 201 EXPECT_FALSE(klass->IsArrayClass()); 202 EXPECT_TRUE(klass->GetComponentType() == NULL); 203 EXPECT_TRUE(klass->IsInSamePackage(klass.Get())); 204 EXPECT_TRUE(mirror::Class::IsInSamePackage(klass->GetDescriptor().c_str(), 205 klass->GetDescriptor().c_str())); 206 if (klass->IsInterface()) { 207 EXPECT_TRUE(klass->IsAbstract()); 208 if (klass->NumDirectMethods() == 1) { 209 EXPECT_TRUE(klass->GetDirectMethod(0)->IsClassInitializer()); 210 EXPECT_TRUE(klass->GetDirectMethod(0)->IsDirect()); 211 } else { 212 EXPECT_EQ(0U, klass->NumDirectMethods()); 213 } 214 } else { 215 if (!klass->IsSynthetic()) { 216 EXPECT_NE(0U, klass->NumDirectMethods()); 217 } 218 } 219 EXPECT_EQ(klass->IsInterface(), !klass->HasVTable()); 220 mirror::IfTable* iftable = klass->GetIfTable(); 221 for (int i = 0; i < klass->GetIfTableCount(); i++) { 222 mirror::Class* interface = iftable->GetInterface(i); 223 ASSERT_TRUE(interface != NULL); 224 if (klass->IsInterface()) { 225 EXPECT_EQ(0U, iftable->GetMethodArrayCount(i)); 226 } else { 227 EXPECT_EQ(interface->NumVirtualMethods(), iftable->GetMethodArrayCount(i)); 228 } 229 } 230 if (klass->IsAbstract()) { 231 EXPECT_FALSE(klass->IsFinal()); 232 } else { 233 EXPECT_FALSE(klass->IsAnnotation()); 234 } 235 if (klass->IsFinal()) { 236 EXPECT_FALSE(klass->IsAbstract()); 237 EXPECT_FALSE(klass->IsAnnotation()); 238 } 239 if (klass->IsAnnotation()) { 240 EXPECT_FALSE(klass->IsFinal()); 241 EXPECT_TRUE(klass->IsAbstract()); 242 } 243 244 EXPECT_FALSE(klass->IsPrimitive()); 245 EXPECT_TRUE(klass->CanAccess(klass.Get())); 246 247 for (size_t i = 0; i < klass->NumDirectMethods(); i++) { 248 mirror::ArtMethod* method = klass->GetDirectMethod(i); 249 AssertMethod(method); 250 EXPECT_TRUE(method->IsDirect()); 251 EXPECT_EQ(klass.Get(), method->GetDeclaringClass()); 252 } 253 254 for (size_t i = 0; i < klass->NumVirtualMethods(); i++) { 255 mirror::ArtMethod* method = klass->GetVirtualMethod(i); 256 AssertMethod(method); 257 EXPECT_FALSE(method->IsDirect()); 258 EXPECT_TRUE(method->GetDeclaringClass()->IsAssignableFrom(klass.Get())); 259 } 260 261 for (size_t i = 0; i < klass->NumInstanceFields(); i++) { 262 mirror::ArtField* field = klass->GetInstanceField(i); 263 AssertField(klass.Get(), field); 264 EXPECT_FALSE(field->IsStatic()); 265 } 266 267 for (size_t i = 0; i < klass->NumStaticFields(); i++) { 268 mirror::ArtField* field = klass->GetStaticField(i); 269 AssertField(klass.Get(), field); 270 EXPECT_TRUE(field->IsStatic()); 271 } 272 273 // Confirm that all instances fields are packed together at the start 274 EXPECT_GE(klass->NumInstanceFields(), klass->NumReferenceInstanceFields()); 275 StackHandleScope<1> hs(Thread::Current()); 276 FieldHelper fh(hs.NewHandle<mirror::ArtField>(nullptr)); 277 for (size_t i = 0; i < klass->NumReferenceInstanceFields(); i++) { 278 mirror::ArtField* field = klass->GetInstanceField(i); 279 fh.ChangeField(field); 280 ASSERT_TRUE(!field->IsPrimitiveType()); 281 mirror::Class* field_type = fh.GetType(); 282 ASSERT_TRUE(field_type != NULL); 283 ASSERT_TRUE(!field_type->IsPrimitive()); 284 } 285 for (size_t i = klass->NumReferenceInstanceFields(); i < klass->NumInstanceFields(); i++) { 286 mirror::ArtField* field = klass->GetInstanceField(i); 287 fh.ChangeField(field); 288 mirror::Class* field_type = fh.GetType(); 289 ASSERT_TRUE(field_type != NULL); 290 if (!fh.GetField()->IsPrimitiveType() || !field_type->IsPrimitive()) { 291 // While Reference.referent is not primitive, the ClassLinker 292 // treats it as such so that the garbage collector won't scan it. 293 EXPECT_EQ(PrettyField(fh.GetField()), "java.lang.Object java.lang.ref.Reference.referent"); 294 } 295 } 296 297 size_t total_num_reference_instance_fields = 0; 298 mirror::Class* k = klass.Get(); 299 while (k != NULL) { 300 total_num_reference_instance_fields += k->NumReferenceInstanceFields(); 301 k = k->GetSuperClass(); 302 } 303 EXPECT_EQ(klass->GetReferenceInstanceOffsets() == 0, total_num_reference_instance_fields == 0); 304 } 305 306 void AssertDexFileClass(mirror::ClassLoader* class_loader, const std::string& descriptor) 307 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 308 ASSERT_TRUE(descriptor != NULL); 309 Thread* self = Thread::Current(); 310 StackHandleScope<1> hs(self); 311 Handle<mirror::Class> klass( 312 hs.NewHandle(class_linker_->FindSystemClass(self, descriptor.c_str()))); 313 ASSERT_TRUE(klass.Get() != nullptr); 314 EXPECT_STREQ(descriptor.c_str(), klass.Get()->GetDescriptor().c_str()); 315 EXPECT_EQ(class_loader, klass->GetClassLoader()); 316 if (klass->IsPrimitive()) { 317 AssertPrimitiveClass(descriptor, klass.Get()); 318 } else if (klass->IsArrayClass()) { 319 AssertArrayClass(descriptor, klass); 320 } else { 321 AssertClass(descriptor, klass); 322 } 323 } 324 325 void AssertDexFile(const DexFile* dex, mirror::ClassLoader* class_loader) 326 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 327 ASSERT_TRUE(dex != NULL); 328 329 // Verify all the classes defined in this file 330 for (size_t i = 0; i < dex->NumClassDefs(); i++) { 331 const DexFile::ClassDef& class_def = dex->GetClassDef(i); 332 const char* descriptor = dex->GetClassDescriptor(class_def); 333 AssertDexFileClass(class_loader, descriptor); 334 } 335 // Verify all the types referenced by this file 336 for (size_t i = 0; i < dex->NumTypeIds(); i++) { 337 const DexFile::TypeId& type_id = dex->GetTypeId(i); 338 const char* descriptor = dex->GetTypeDescriptor(type_id); 339 AssertDexFileClass(class_loader, descriptor); 340 } 341 class_linker_->VisitRoots(TestRootVisitor, NULL, kVisitRootFlagAllRoots); 342 // Verify the dex cache has resolution methods in all resolved method slots 343 mirror::DexCache* dex_cache = class_linker_->FindDexCache(*dex); 344 mirror::ObjectArray<mirror::ArtMethod>* resolved_methods = dex_cache->GetResolvedMethods(); 345 for (size_t i = 0; i < static_cast<size_t>(resolved_methods->GetLength()); i++) { 346 EXPECT_TRUE(resolved_methods->Get(i) != NULL) << dex->GetLocation() << " i=" << i; 347 } 348 } 349 350 static void TestRootVisitor(mirror::Object** root, void*, uint32_t, RootType) { 351 EXPECT_TRUE(*root != NULL); 352 } 353}; 354 355struct CheckOffset { 356 size_t cpp_offset; 357 const char* java_name; 358 CheckOffset(size_t c, const char* j) : cpp_offset(c), java_name(j) {} 359}; 360 361template <typename T> 362struct CheckOffsets { 363 CheckOffsets(bool is_static, const char* class_descriptor) 364 : is_static(is_static), class_descriptor(class_descriptor) {} 365 bool is_static; 366 std::string class_descriptor; 367 std::vector<CheckOffset> offsets; 368 369 bool Check() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 370 Thread* self = Thread::Current(); 371 mirror::Class* klass = 372 Runtime::Current()->GetClassLinker()->FindSystemClass(self, class_descriptor.c_str()); 373 CHECK(klass != NULL) << class_descriptor; 374 375 bool error = false; 376 377 if (!klass->IsClassClass() && !is_static) { 378 size_t expected_size = is_static ? klass->GetClassSize(): klass->GetObjectSize(); 379 if (sizeof(T) != expected_size) { 380 LOG(ERROR) << "Class size mismatch:" 381 << " class=" << class_descriptor 382 << " Java=" << expected_size 383 << " C++=" << sizeof(T); 384 error = true; 385 } 386 } 387 388 size_t num_fields = is_static ? klass->NumStaticFields() : klass->NumInstanceFields(); 389 if (offsets.size() != num_fields) { 390 LOG(ERROR) << "Field count mismatch:" 391 << " class=" << class_descriptor 392 << " Java=" << num_fields 393 << " C++=" << offsets.size(); 394 error = true; 395 } 396 397 for (size_t i = 0; i < offsets.size(); i++) { 398 mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i); 399 StringPiece field_name(field->GetName()); 400 if (field_name != offsets[i].java_name) { 401 error = true; 402 } 403 } 404 if (error) { 405 for (size_t i = 0; i < offsets.size(); i++) { 406 CheckOffset& offset = offsets[i]; 407 mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i); 408 StringPiece field_name(field->GetName()); 409 if (field_name != offsets[i].java_name) { 410 LOG(ERROR) << "JAVA FIELD ORDER MISMATCH NEXT LINE:"; 411 } 412 LOG(ERROR) << "Java field order:" 413 << " i=" << i << " class=" << class_descriptor 414 << " Java=" << field_name 415 << " CheckOffsets=" << offset.java_name; 416 } 417 } 418 419 for (size_t i = 0; i < offsets.size(); i++) { 420 CheckOffset& offset = offsets[i]; 421 mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i); 422 if (field->GetOffset().Uint32Value() != offset.cpp_offset) { 423 error = true; 424 } 425 } 426 if (error) { 427 for (size_t i = 0; i < offsets.size(); i++) { 428 CheckOffset& offset = offsets[i]; 429 mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i); 430 if (field->GetOffset().Uint32Value() != offset.cpp_offset) { 431 LOG(ERROR) << "OFFSET MISMATCH NEXT LINE:"; 432 } 433 LOG(ERROR) << "Offset: class=" << class_descriptor << " field=" << offset.java_name 434 << " Java=" << field->GetOffset().Uint32Value() << " C++=" << offset.cpp_offset; 435 } 436 } 437 438 return !error; 439 }; 440 441 private: 442 DISALLOW_IMPLICIT_CONSTRUCTORS(CheckOffsets); 443}; 444 445// Note that ClassLinkerTest.ValidateFieldOrderOfJavaCppUnionClasses 446// is first since if it is failing, others are unlikely to succeed. 447 448struct ObjectOffsets : public CheckOffsets<mirror::Object> { 449 ObjectOffsets() : CheckOffsets<mirror::Object>(false, "Ljava/lang/Object;") { 450 // alphabetical references 451 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, klass_), "shadow$_klass_")); 452 453 // alphabetical 32-bit 454 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, monitor_), "shadow$_monitor_")); 455#ifdef USE_BAKER_OR_BROOKS_READ_BARRIER 456 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, x_rb_ptr_), "shadow$_x_rb_ptr_")); 457 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, x_xpadding_), "shadow$_x_xpadding_")); 458#endif 459 }; 460}; 461 462struct ArtFieldOffsets : public CheckOffsets<mirror::ArtField> { 463 ArtFieldOffsets() : CheckOffsets<mirror::ArtField>(false, "Ljava/lang/reflect/ArtField;") { 464 // alphabetical references 465 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, declaring_class_), "declaringClass")); 466 467 // alphabetical 32-bit 468 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, access_flags_), "accessFlags")); 469 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, field_dex_idx_), "fieldDexIndex")); 470 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, offset_), "offset")); 471 }; 472}; 473 474struct ArtMethodOffsets : public CheckOffsets<mirror::ArtMethod> { 475 ArtMethodOffsets() : CheckOffsets<mirror::ArtMethod>(false, "Ljava/lang/reflect/ArtMethod;") { 476 // alphabetical references 477 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, declaring_class_), "declaringClass")); 478 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_resolved_methods_), "dexCacheResolvedMethods")); 479 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_resolved_types_), "dexCacheResolvedTypes")); 480 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_strings_), "dexCacheStrings")); 481 482 // alphabetical 64-bit 483 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_interpreter_), "entryPointFromInterpreter")); 484 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_jni_), "entryPointFromJni")); 485 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_portable_compiled_code_), "entryPointFromPortableCompiledCode")); 486 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_quick_compiled_code_), "entryPointFromQuickCompiledCode")); 487 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, gc_map_), "gcMap")); 488 489 // alphabetical 32-bit 490 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, access_flags_), "accessFlags")); 491 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_code_item_offset_), "dexCodeItemOffset")); 492 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_method_index_), "dexMethodIndex")); 493 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, method_index_), "methodIndex")); 494 }; 495}; 496 497struct ClassOffsets : public CheckOffsets<mirror::Class> { 498 ClassOffsets() : CheckOffsets<mirror::Class>(false, "Ljava/lang/Class;") { 499 // alphabetical references 500 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, class_loader_), "classLoader")); 501 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, component_type_), "componentType")); 502 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_cache_), "dexCache")); 503 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, direct_methods_), "directMethods")); 504 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, ifields_), "iFields")); 505 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, iftable_), "ifTable")); 506 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, imtable_), "imTable")); 507 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, name_), "name")); 508 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, sfields_), "sFields")); 509 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, super_class_), "superClass")); 510 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, verify_error_class_), "verifyErrorClass")); 511 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, virtual_methods_), "virtualMethods")); 512 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, vtable_), "vtable")); 513 514 // alphabetical 32-bit 515 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, access_flags_), "accessFlags")); 516 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, class_size_), "classSize")); 517 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, clinit_thread_id_), "clinitThreadId")); 518 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_class_def_idx_), "dexClassDefIndex")); 519 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_type_idx_), "dexTypeIndex")); 520 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_instance_fields_), "numReferenceInstanceFields")); 521 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_static_fields_), "numReferenceStaticFields")); 522 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, object_size_), "objectSize")); 523 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, primitive_type_), "primitiveType")); 524 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, reference_instance_offsets_), "referenceInstanceOffsets")); 525 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, reference_static_offsets_), "referenceStaticOffsets")); 526 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, status_), "status")); 527 }; 528}; 529 530struct StringOffsets : public CheckOffsets<mirror::String> { 531 StringOffsets() : CheckOffsets<mirror::String>(false, "Ljava/lang/String;") { 532 // alphabetical references 533 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, array_), "value")); 534 535 // alphabetical 32-bit 536 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, count_), "count")); 537 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, hash_code_), "hashCode")); 538 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, offset_), "offset")); 539 }; 540}; 541 542struct ThrowableOffsets : public CheckOffsets<mirror::Throwable> { 543 ThrowableOffsets() : CheckOffsets<mirror::Throwable>(false, "Ljava/lang/Throwable;") { 544 // alphabetical references 545 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, cause_), "cause")); 546 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, detail_message_), "detailMessage")); 547 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_state_), "stackState")); 548 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_trace_), "stackTrace")); 549 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, suppressed_exceptions_), "suppressedExceptions")); 550 }; 551}; 552 553struct StackTraceElementOffsets : public CheckOffsets<mirror::StackTraceElement> { 554 StackTraceElementOffsets() : CheckOffsets<mirror::StackTraceElement>(false, "Ljava/lang/StackTraceElement;") { 555 // alphabetical references 556 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, declaring_class_), "declaringClass")); 557 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, file_name_), "fileName")); 558 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, method_name_), "methodName")); 559 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, line_number_), "lineNumber")); 560 }; 561}; 562 563struct ClassLoaderOffsets : public CheckOffsets<mirror::ClassLoader> { 564 ClassLoaderOffsets() : CheckOffsets<mirror::ClassLoader>(false, "Ljava/lang/ClassLoader;") { 565 // alphabetical references 566 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, packages_), "packages")); 567 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, parent_), "parent")); 568 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, proxyCache_), "proxyCache")); 569 }; 570}; 571 572struct ProxyOffsets : public CheckOffsets<mirror::Proxy> { 573 ProxyOffsets() : CheckOffsets<mirror::Proxy>(false, "Ljava/lang/reflect/Proxy;") { 574 // alphabetical references 575 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Proxy, h_), "h")); 576 }; 577}; 578 579struct DexCacheOffsets : public CheckOffsets<mirror::DexCache> { 580 DexCacheOffsets() : CheckOffsets<mirror::DexCache>(false, "Ljava/lang/DexCache;") { 581 // alphabetical references 582 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_), "dex")); 583 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, location_), "location")); 584 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_), "resolvedFields")); 585 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_), "resolvedMethods")); 586 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_), "resolvedTypes")); 587 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_), "strings")); 588 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_file_), "dexFile")); 589 }; 590}; 591 592struct ReferenceOffsets : public CheckOffsets<mirror::Reference> { 593 ReferenceOffsets() : CheckOffsets<mirror::Reference>(false, "Ljava/lang/ref/Reference;") { 594 // alphabetical references 595 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, pending_next_), "pendingNext")); 596 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, queue_), "queue")); 597 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, queue_next_), "queueNext")); 598 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, referent_), "referent")); 599 }; 600}; 601 602struct FinalizerReferenceOffsets : public CheckOffsets<mirror::FinalizerReference> { 603 FinalizerReferenceOffsets() : CheckOffsets<mirror::FinalizerReference>(false, "Ljava/lang/ref/FinalizerReference;") { 604 // alphabetical references 605 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, next_), "next")); 606 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, prev_), "prev")); 607 offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, zombie_), "zombie")); 608 }; 609}; 610 611// C++ fields must exactly match the fields in the Java classes. If this fails, 612// reorder the fields in the C++ class. Managed class fields are ordered by 613// ClassLinker::LinkFields. 614TEST_F(ClassLinkerTest, ValidateFieldOrderOfJavaCppUnionClasses) { 615 ScopedObjectAccess soa(Thread::Current()); 616 EXPECT_TRUE(ObjectOffsets().Check()); 617 EXPECT_TRUE(ArtFieldOffsets().Check()); 618 EXPECT_TRUE(ArtMethodOffsets().Check()); 619 EXPECT_TRUE(ClassOffsets().Check()); 620 EXPECT_TRUE(StringOffsets().Check()); 621 EXPECT_TRUE(ThrowableOffsets().Check()); 622 EXPECT_TRUE(StackTraceElementOffsets().Check()); 623 EXPECT_TRUE(ClassLoaderOffsets().Check()); 624 EXPECT_TRUE(ProxyOffsets().Check()); 625 EXPECT_TRUE(DexCacheOffsets().Check()); 626 EXPECT_TRUE(ReferenceOffsets().Check()); 627 EXPECT_TRUE(FinalizerReferenceOffsets().Check()); 628} 629 630TEST_F(ClassLinkerTest, FindClassNonexistent) { 631 ScopedObjectAccess soa(Thread::Current()); 632 AssertNonExistentClass("NoSuchClass;"); 633 AssertNonExistentClass("LNoSuchClass;"); 634} 635 636TEST_F(ClassLinkerTest, FindClassNested) { 637 ScopedObjectAccess soa(Thread::Current()); 638 StackHandleScope<1> hs(soa.Self()); 639 Handle<mirror::ClassLoader> class_loader( 640 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Nested")))); 641 642 mirror::Class* outer = class_linker_->FindClass(soa.Self(), "LNested;", class_loader); 643 ASSERT_TRUE(outer != NULL); 644 EXPECT_EQ(0U, outer->NumVirtualMethods()); 645 EXPECT_EQ(1U, outer->NumDirectMethods()); 646 647 mirror::Class* inner = class_linker_->FindClass(soa.Self(), "LNested$Inner;", class_loader); 648 ASSERT_TRUE(inner != NULL); 649 EXPECT_EQ(0U, inner->NumVirtualMethods()); 650 EXPECT_EQ(1U, inner->NumDirectMethods()); 651} 652 653TEST_F(ClassLinkerTest, FindClass_Primitives) { 654 ScopedObjectAccess soa(Thread::Current()); 655 const std::string expected("BCDFIJSZV"); 656 for (int ch = 1; ch < 256; ++ch) { 657 std::string descriptor; 658 descriptor.push_back(ch); 659 if (expected.find(ch) == std::string::npos) { 660 AssertNonExistentClass(descriptor); 661 } else { 662 AssertPrimitiveClass(descriptor); 663 } 664 } 665} 666 667TEST_F(ClassLinkerTest, FindClass) { 668 ScopedObjectAccess soa(Thread::Current()); 669 mirror::Class* JavaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"); 670 ASSERT_TRUE(JavaLangObject != NULL); 671 ASSERT_TRUE(JavaLangObject->GetClass() != NULL); 672 ASSERT_EQ(JavaLangObject->GetClass(), JavaLangObject->GetClass()->GetClass()); 673 EXPECT_EQ(JavaLangObject, JavaLangObject->GetClass()->GetSuperClass()); 674 ASSERT_STREQ(JavaLangObject->GetDescriptor().c_str(), "Ljava/lang/Object;"); 675 EXPECT_TRUE(JavaLangObject->GetSuperClass() == NULL); 676 EXPECT_FALSE(JavaLangObject->HasSuperClass()); 677 EXPECT_TRUE(JavaLangObject->GetClassLoader() == NULL); 678 EXPECT_EQ(mirror::Class::kStatusInitialized, JavaLangObject->GetStatus()); 679 EXPECT_FALSE(JavaLangObject->IsErroneous()); 680 EXPECT_TRUE(JavaLangObject->IsLoaded()); 681 EXPECT_TRUE(JavaLangObject->IsResolved()); 682 EXPECT_TRUE(JavaLangObject->IsVerified()); 683 EXPECT_TRUE(JavaLangObject->IsInitialized()); 684 EXPECT_FALSE(JavaLangObject->IsArrayInstance()); 685 EXPECT_FALSE(JavaLangObject->IsArrayClass()); 686 EXPECT_TRUE(JavaLangObject->GetComponentType() == NULL); 687 EXPECT_FALSE(JavaLangObject->IsInterface()); 688 EXPECT_TRUE(JavaLangObject->IsPublic()); 689 EXPECT_FALSE(JavaLangObject->IsFinal()); 690 EXPECT_FALSE(JavaLangObject->IsPrimitive()); 691 EXPECT_FALSE(JavaLangObject->IsSynthetic()); 692 EXPECT_EQ(2U, JavaLangObject->NumDirectMethods()); 693 EXPECT_EQ(11U, JavaLangObject->NumVirtualMethods()); 694 if (!kUseBakerOrBrooksReadBarrier) { 695 EXPECT_EQ(2U, JavaLangObject->NumInstanceFields()); 696 } else { 697 EXPECT_EQ(4U, JavaLangObject->NumInstanceFields()); 698 } 699 EXPECT_STREQ(JavaLangObject->GetInstanceField(0)->GetName(), "shadow$_klass_"); 700 EXPECT_STREQ(JavaLangObject->GetInstanceField(1)->GetName(), "shadow$_monitor_"); 701 if (kUseBakerOrBrooksReadBarrier) { 702 EXPECT_STREQ(JavaLangObject->GetInstanceField(2)->GetName(), "shadow$_x_rb_ptr_"); 703 EXPECT_STREQ(JavaLangObject->GetInstanceField(3)->GetName(), "shadow$_x_xpadding_"); 704 } 705 706 EXPECT_EQ(0U, JavaLangObject->NumStaticFields()); 707 EXPECT_EQ(0U, JavaLangObject->NumDirectInterfaces()); 708 709 StackHandleScope<1> hs(soa.Self()); 710 Handle<mirror::ClassLoader> class_loader( 711 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass")))); 712 AssertNonExistentClass("LMyClass;"); 713 mirror::Class* MyClass = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader); 714 ASSERT_TRUE(MyClass != NULL); 715 ASSERT_TRUE(MyClass->GetClass() != NULL); 716 ASSERT_EQ(MyClass->GetClass(), MyClass->GetClass()->GetClass()); 717 EXPECT_EQ(JavaLangObject, MyClass->GetClass()->GetSuperClass()); 718 ASSERT_STREQ(MyClass->GetDescriptor().c_str(), "LMyClass;"); 719 EXPECT_TRUE(MyClass->GetSuperClass() == JavaLangObject); 720 EXPECT_TRUE(MyClass->HasSuperClass()); 721 EXPECT_EQ(class_loader.Get(), MyClass->GetClassLoader()); 722 EXPECT_EQ(mirror::Class::kStatusResolved, MyClass->GetStatus()); 723 EXPECT_FALSE(MyClass->IsErroneous()); 724 EXPECT_TRUE(MyClass->IsLoaded()); 725 EXPECT_TRUE(MyClass->IsResolved()); 726 EXPECT_FALSE(MyClass->IsVerified()); 727 EXPECT_FALSE(MyClass->IsInitialized()); 728 EXPECT_FALSE(MyClass->IsArrayInstance()); 729 EXPECT_FALSE(MyClass->IsArrayClass()); 730 EXPECT_TRUE(MyClass->GetComponentType() == NULL); 731 EXPECT_FALSE(MyClass->IsInterface()); 732 EXPECT_FALSE(MyClass->IsPublic()); 733 EXPECT_FALSE(MyClass->IsFinal()); 734 EXPECT_FALSE(MyClass->IsPrimitive()); 735 EXPECT_FALSE(MyClass->IsSynthetic()); 736 EXPECT_EQ(1U, MyClass->NumDirectMethods()); 737 EXPECT_EQ(0U, MyClass->NumVirtualMethods()); 738 EXPECT_EQ(0U, MyClass->NumInstanceFields()); 739 EXPECT_EQ(0U, MyClass->NumStaticFields()); 740 EXPECT_EQ(0U, MyClass->NumDirectInterfaces()); 741 742 EXPECT_EQ(JavaLangObject->GetClass()->GetClass(), MyClass->GetClass()->GetClass()); 743 744 // created by class_linker 745 AssertArrayClass("[C", "C", NULL); 746 AssertArrayClass("[Ljava/lang/Object;", "Ljava/lang/Object;", NULL); 747 // synthesized on the fly 748 AssertArrayClass("[[C", "[C", NULL); 749 AssertArrayClass("[[[LMyClass;", "[[LMyClass;", class_loader.Get()); 750 // or not available at all 751 AssertNonExistentClass("[[[[LNonExistentClass;"); 752} 753 754TEST_F(ClassLinkerTest, LibCore) { 755 ScopedObjectAccess soa(Thread::Current()); 756 AssertDexFile(java_lang_dex_file_, NULL); 757} 758 759// The first reference array element must be a multiple of 4 bytes from the 760// start of the object 761TEST_F(ClassLinkerTest, ValidateObjectArrayElementsOffset) { 762 ScopedObjectAccess soa(Thread::Current()); 763 mirror::Class* array_class = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;"); 764 mirror::ObjectArray<mirror::String>* array = 765 mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), array_class, 0); 766 uintptr_t data_offset = 767 reinterpret_cast<uintptr_t>(array->GetRawData(sizeof(mirror::HeapReference<mirror::String>), 768 0)); 769 if (sizeof(mirror::HeapReference<mirror::String>) == sizeof(int32_t)) { 770 EXPECT_TRUE(IsAligned<4>(data_offset)); // Check 4 byte alignment. 771 } else { 772 EXPECT_TRUE(IsAligned<8>(data_offset)); // Check 8 byte alignment. 773 } 774} 775 776TEST_F(ClassLinkerTest, ValidatePrimitiveArrayElementsOffset) { 777 ScopedObjectAccess soa(Thread::Current()); 778 StackHandleScope<5> hs(soa.Self()); 779 Handle<mirror::LongArray> long_array(hs.NewHandle(mirror::LongArray::Alloc(soa.Self(), 0))); 780 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[J"), long_array->GetClass()); 781 uintptr_t data_offset = reinterpret_cast<uintptr_t>(long_array->GetData()); 782 EXPECT_TRUE(IsAligned<8>(data_offset)); // Longs require 8 byte alignment 783 784 Handle<mirror::DoubleArray> double_array(hs.NewHandle(mirror::DoubleArray::Alloc(soa.Self(), 0))); 785 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[D"), double_array->GetClass()); 786 data_offset = reinterpret_cast<uintptr_t>(double_array->GetData()); 787 EXPECT_TRUE(IsAligned<8>(data_offset)); // Doubles require 8 byte alignment 788 789 Handle<mirror::IntArray> int_array(hs.NewHandle(mirror::IntArray::Alloc(soa.Self(), 0))); 790 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[I"), int_array->GetClass()); 791 data_offset = reinterpret_cast<uintptr_t>(int_array->GetData()); 792 EXPECT_TRUE(IsAligned<4>(data_offset)); // Ints require 4 byte alignment 793 794 Handle<mirror::CharArray> char_array(hs.NewHandle(mirror::CharArray::Alloc(soa.Self(), 0))); 795 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[C"), char_array->GetClass()); 796 data_offset = reinterpret_cast<uintptr_t>(char_array->GetData()); 797 EXPECT_TRUE(IsAligned<2>(data_offset)); // Chars require 2 byte alignment 798 799 Handle<mirror::ShortArray> short_array(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 0))); 800 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[S"), short_array->GetClass()); 801 data_offset = reinterpret_cast<uintptr_t>(short_array->GetData()); 802 EXPECT_TRUE(IsAligned<2>(data_offset)); // Shorts require 2 byte alignment 803 804 // Take it as given that bytes and booleans have byte alignment 805} 806 807TEST_F(ClassLinkerTest, ValidateBoxedTypes) { 808 // Validate that the "value" field is always the 0th field in each of java.lang's box classes. 809 // This lets UnboxPrimitive avoid searching for the field by name at runtime. 810 ScopedObjectAccess soa(Thread::Current()); 811 NullHandle<mirror::ClassLoader> class_loader; 812 mirror::Class* c; 813 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Boolean;", class_loader); 814 EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName()); 815 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Byte;", class_loader); 816 EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName()); 817 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Character;", class_loader); 818 EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName()); 819 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Double;", class_loader); 820 EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName()); 821 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Float;", class_loader); 822 EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName()); 823 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Integer;", class_loader); 824 EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName()); 825 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Long;", class_loader); 826 EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName()); 827 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Short;", class_loader); 828 EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName()); 829} 830 831TEST_F(ClassLinkerTest, TwoClassLoadersOneClass) { 832 ScopedObjectAccess soa(Thread::Current()); 833 StackHandleScope<2> hs(soa.Self()); 834 Handle<mirror::ClassLoader> class_loader_1( 835 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass")))); 836 Handle<mirror::ClassLoader> class_loader_2( 837 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass")))); 838 mirror::Class* MyClass_1 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_1); 839 mirror::Class* MyClass_2 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_2); 840 EXPECT_TRUE(MyClass_1 != nullptr); 841 EXPECT_TRUE(MyClass_2 != nullptr); 842 EXPECT_NE(MyClass_1, MyClass_2); 843} 844 845TEST_F(ClassLinkerTest, StaticFields) { 846 ScopedObjectAccess soa(Thread::Current()); 847 StackHandleScope<2> hs(soa.Self()); 848 Handle<mirror::ClassLoader> class_loader( 849 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Statics")))); 850 Handle<mirror::Class> statics( 851 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader))); 852 class_linker_->EnsureInitialized(statics, true, true); 853 854 // Static final primitives that are initialized by a compile-time constant 855 // expression resolve to a copy of a constant value from the constant pool. 856 // So <clinit> should be null. 857 mirror::ArtMethod* clinit = statics->FindDirectMethod("<clinit>", "()V"); 858 EXPECT_TRUE(clinit == NULL); 859 860 EXPECT_EQ(9U, statics->NumStaticFields()); 861 862 mirror::ArtField* s0 = mirror::Class::FindStaticField(soa.Self(), statics, "s0", "Z"); 863 EXPECT_STREQ(s0->GetClass()->GetDescriptor().c_str(), "Ljava/lang/reflect/ArtField;"); 864 EXPECT_EQ(s0->GetTypeAsPrimitiveType(), Primitive::kPrimBoolean); 865 EXPECT_EQ(true, s0->GetBoolean(statics.Get())); 866 s0->SetBoolean<false>(statics.Get(), false); 867 868 mirror::ArtField* s1 = mirror::Class::FindStaticField(soa.Self(), statics, "s1", "B"); 869 EXPECT_EQ(s1->GetTypeAsPrimitiveType(), Primitive::kPrimByte); 870 EXPECT_EQ(5, s1->GetByte(statics.Get())); 871 s1->SetByte<false>(statics.Get(), 6); 872 873 mirror::ArtField* s2 = mirror::Class::FindStaticField(soa.Self(), statics, "s2", "C"); 874 EXPECT_EQ(s2->GetTypeAsPrimitiveType(), Primitive::kPrimChar); 875 EXPECT_EQ('a', s2->GetChar(statics.Get())); 876 s2->SetChar<false>(statics.Get(), 'b'); 877 878 mirror::ArtField* s3 = mirror::Class::FindStaticField(soa.Self(), statics, "s3", "S"); 879 EXPECT_EQ(s3->GetTypeAsPrimitiveType(), Primitive::kPrimShort); 880 EXPECT_EQ(-536, s3->GetShort(statics.Get())); 881 s3->SetShort<false>(statics.Get(), -535); 882 883 mirror::ArtField* s4 = mirror::Class::FindStaticField(soa.Self(), statics, "s4", "I"); 884 EXPECT_EQ(s4->GetTypeAsPrimitiveType(), Primitive::kPrimInt); 885 EXPECT_EQ(2000000000, s4->GetInt(statics.Get())); 886 s4->SetInt<false>(statics.Get(), 2000000001); 887 888 mirror::ArtField* s5 = mirror::Class::FindStaticField(soa.Self(), statics, "s5", "J"); 889 EXPECT_EQ(s5->GetTypeAsPrimitiveType(), Primitive::kPrimLong); 890 EXPECT_EQ(0x1234567890abcdefLL, s5->GetLong(statics.Get())); 891 s5->SetLong<false>(statics.Get(), INT64_C(0x34567890abcdef12)); 892 893 mirror::ArtField* s6 = mirror::Class::FindStaticField(soa.Self(), statics, "s6", "F"); 894 EXPECT_EQ(s6->GetTypeAsPrimitiveType(), Primitive::kPrimFloat); 895 EXPECT_EQ(0.5, s6->GetFloat(statics.Get())); 896 s6->SetFloat<false>(statics.Get(), 0.75); 897 898 mirror::ArtField* s7 = mirror::Class::FindStaticField(soa.Self(), statics, "s7", "D"); 899 EXPECT_EQ(s7->GetTypeAsPrimitiveType(), Primitive::kPrimDouble); 900 EXPECT_EQ(16777217, s7->GetDouble(statics.Get())); 901 s7->SetDouble<false>(statics.Get(), 16777219); 902 903 mirror::ArtField* s8 = mirror::Class::FindStaticField(soa.Self(), statics, "s8", 904 "Ljava/lang/String;"); 905 EXPECT_EQ(s8->GetTypeAsPrimitiveType(), Primitive::kPrimNot); 906 EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("android")); 907 s8->SetObject<false>(s8->GetDeclaringClass(), 908 mirror::String::AllocFromModifiedUtf8(soa.Self(), "robot")); 909 910 // TODO: Remove EXPECT_FALSE when GCC can handle EXPECT_EQ 911 // http://code.google.com/p/googletest/issues/detail?id=322 912 EXPECT_FALSE(s0->GetBoolean(statics.Get())); 913 EXPECT_EQ(6, s1->GetByte(statics.Get())); 914 EXPECT_EQ('b', s2->GetChar(statics.Get())); 915 EXPECT_EQ(-535, s3->GetShort(statics.Get())); 916 EXPECT_EQ(2000000001, s4->GetInt(statics.Get())); 917 EXPECT_EQ(INT64_C(0x34567890abcdef12), s5->GetLong(statics.Get())); 918 EXPECT_EQ(0.75, s6->GetFloat(statics.Get())); 919 EXPECT_EQ(16777219, s7->GetDouble(statics.Get())); 920 EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("robot")); 921} 922 923TEST_F(ClassLinkerTest, Interfaces) { 924 ScopedObjectAccess soa(Thread::Current()); 925 StackHandleScope<6> hs(soa.Self()); 926 Handle<mirror::ClassLoader> class_loader( 927 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Interfaces")))); 928 Handle<mirror::Class> I( 929 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader))); 930 Handle<mirror::Class> J( 931 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader))); 932 Handle<mirror::Class> K( 933 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$K;", class_loader))); 934 Handle<mirror::Class> A( 935 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$A;", class_loader))); 936 Handle<mirror::Class> B( 937 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$B;", class_loader))); 938 EXPECT_TRUE(I->IsAssignableFrom(A.Get())); 939 EXPECT_TRUE(J->IsAssignableFrom(A.Get())); 940 EXPECT_TRUE(J->IsAssignableFrom(K.Get())); 941 EXPECT_TRUE(K->IsAssignableFrom(B.Get())); 942 EXPECT_TRUE(J->IsAssignableFrom(B.Get())); 943 944 const Signature void_sig = I->GetDexCache()->GetDexFile()->CreateSignature("()V"); 945 mirror::ArtMethod* Ii = I->FindVirtualMethod("i", void_sig); 946 mirror::ArtMethod* Jj1 = J->FindVirtualMethod("j1", void_sig); 947 mirror::ArtMethod* Jj2 = J->FindVirtualMethod("j2", void_sig); 948 mirror::ArtMethod* Kj1 = K->FindInterfaceMethod("j1", void_sig); 949 mirror::ArtMethod* Kj2 = K->FindInterfaceMethod("j2", void_sig); 950 mirror::ArtMethod* Kk = K->FindInterfaceMethod("k", void_sig); 951 mirror::ArtMethod* Ai = A->FindVirtualMethod("i", void_sig); 952 mirror::ArtMethod* Aj1 = A->FindVirtualMethod("j1", void_sig); 953 mirror::ArtMethod* Aj2 = A->FindVirtualMethod("j2", void_sig); 954 ASSERT_TRUE(Ii != NULL); 955 ASSERT_TRUE(Jj1 != NULL); 956 ASSERT_TRUE(Jj2 != NULL); 957 ASSERT_TRUE(Kj1 != NULL); 958 ASSERT_TRUE(Kj2 != NULL); 959 ASSERT_TRUE(Kk != NULL); 960 ASSERT_TRUE(Ai != NULL); 961 ASSERT_TRUE(Aj1 != NULL); 962 ASSERT_TRUE(Aj2 != NULL); 963 EXPECT_NE(Ii, Ai); 964 EXPECT_NE(Jj1, Aj1); 965 EXPECT_NE(Jj2, Aj2); 966 EXPECT_EQ(Kj1, Jj1); 967 EXPECT_EQ(Kj2, Jj2); 968 EXPECT_EQ(Ai, A->FindVirtualMethodForInterface(Ii)); 969 EXPECT_EQ(Aj1, A->FindVirtualMethodForInterface(Jj1)); 970 EXPECT_EQ(Aj2, A->FindVirtualMethodForInterface(Jj2)); 971 EXPECT_EQ(Ai, A->FindVirtualMethodForVirtualOrInterface(Ii)); 972 EXPECT_EQ(Aj1, A->FindVirtualMethodForVirtualOrInterface(Jj1)); 973 EXPECT_EQ(Aj2, A->FindVirtualMethodForVirtualOrInterface(Jj2)); 974 975 mirror::ArtField* Afoo = mirror::Class::FindStaticField(soa.Self(), A, "foo", 976 "Ljava/lang/String;"); 977 mirror::ArtField* Bfoo = mirror::Class::FindStaticField(soa.Self(), B, "foo", 978 "Ljava/lang/String;"); 979 mirror::ArtField* Jfoo = mirror::Class::FindStaticField(soa.Self(), J, "foo", 980 "Ljava/lang/String;"); 981 mirror::ArtField* Kfoo = mirror::Class::FindStaticField(soa.Self(), K, "foo", 982 "Ljava/lang/String;"); 983 ASSERT_TRUE(Afoo != NULL); 984 EXPECT_EQ(Afoo, Bfoo); 985 EXPECT_EQ(Afoo, Jfoo); 986 EXPECT_EQ(Afoo, Kfoo); 987} 988 989TEST_F(ClassLinkerTest, ResolveVerifyAndClinit) { 990 // pretend we are trying to get the static storage for the StaticsFromCode class. 991 992 // case 1, get the uninitialized storage from StaticsFromCode.<clinit> 993 // case 2, get the initialized storage from StaticsFromCode.getS0 994 995 ScopedObjectAccess soa(Thread::Current()); 996 jobject jclass_loader = LoadDex("StaticsFromCode"); 997 StackHandleScope<1> hs(soa.Self()); 998 Handle<mirror::ClassLoader> class_loader( 999 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader))); 1000 const DexFile* dex_file = Runtime::Current()->GetCompileTimeClassPath(jclass_loader)[0]; 1001 CHECK(dex_file != NULL); 1002 mirror::Class* klass = class_linker_->FindClass(soa.Self(), "LStaticsFromCode;", class_loader); 1003 mirror::ArtMethod* clinit = klass->FindClassInitializer(); 1004 mirror::ArtMethod* getS0 = klass->FindDirectMethod("getS0", "()Ljava/lang/Object;"); 1005 const DexFile::StringId* string_id = dex_file->FindStringId("LStaticsFromCode;"); 1006 ASSERT_TRUE(string_id != NULL); 1007 const DexFile::TypeId* type_id = dex_file->FindTypeId(dex_file->GetIndexForStringId(*string_id)); 1008 ASSERT_TRUE(type_id != NULL); 1009 uint32_t type_idx = dex_file->GetIndexForTypeId(*type_id); 1010 mirror::Class* uninit = ResolveVerifyAndClinit(type_idx, clinit, Thread::Current(), true, false); 1011 EXPECT_TRUE(uninit != NULL); 1012 EXPECT_FALSE(uninit->IsInitialized()); 1013 mirror::Class* init = ResolveVerifyAndClinit(type_idx, getS0, Thread::Current(), true, false); 1014 EXPECT_TRUE(init != NULL); 1015 EXPECT_TRUE(init->IsInitialized()); 1016} 1017 1018TEST_F(ClassLinkerTest, FinalizableBit) { 1019 ScopedObjectAccess soa(Thread::Current()); 1020 mirror::Class* c; 1021 1022 // Object has a finalize method, but we know it's empty. 1023 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"); 1024 EXPECT_FALSE(c->IsFinalizable()); 1025 1026 // Enum has a finalize method to prevent its subclasses from implementing one. 1027 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Enum;"); 1028 EXPECT_FALSE(c->IsFinalizable()); 1029 1030 // RoundingMode is an enum. 1031 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/math/RoundingMode;"); 1032 EXPECT_FALSE(c->IsFinalizable()); 1033 1034 // RandomAccessFile extends Object and overrides finalize. 1035 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/RandomAccessFile;"); 1036 EXPECT_TRUE(c->IsFinalizable()); 1037 1038 // FileInputStream is finalizable and extends InputStream which isn't. 1039 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/InputStream;"); 1040 EXPECT_FALSE(c->IsFinalizable()); 1041 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/FileInputStream;"); 1042 EXPECT_TRUE(c->IsFinalizable()); 1043 1044 // ScheduledThreadPoolExecutor doesn't have a finalize method but 1045 // extends ThreadPoolExecutor which does. 1046 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ThreadPoolExecutor;"); 1047 EXPECT_TRUE(c->IsFinalizable()); 1048 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ScheduledThreadPoolExecutor;"); 1049 EXPECT_TRUE(c->IsFinalizable()); 1050} 1051 1052TEST_F(ClassLinkerTest, ClassRootDescriptors) { 1053 ScopedObjectAccess soa(Thread::Current()); 1054 for (int i = 0; i < ClassLinker::kClassRootsMax; i++) { 1055 mirror::Class* klass = class_linker_->GetClassRoot(ClassLinker::ClassRoot(i)); 1056 EXPECT_TRUE(!klass->GetDescriptor().empty()); 1057 EXPECT_STREQ(klass->GetDescriptor().c_str(), 1058 class_linker_->GetClassRootDescriptor(ClassLinker::ClassRoot(i))) << " i = " << i; 1059 } 1060} 1061 1062TEST_F(ClassLinkerTest, ValidatePredefinedClassSizes) { 1063 ScopedObjectAccess soa(Thread::Current()); 1064 NullHandle<mirror::ClassLoader> class_loader; 1065 mirror::Class* c; 1066 1067 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Class;", class_loader); 1068 EXPECT_EQ(c->GetClassSize(), mirror::Class::ClassClassSize()); 1069 1070 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Object;", class_loader); 1071 EXPECT_EQ(c->GetClassSize(), mirror::Object::ClassSize()); 1072 1073 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/String;", class_loader); 1074 EXPECT_EQ(c->GetClassSize(), mirror::String::ClassSize()); 1075 1076 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/DexCache;", class_loader); 1077 EXPECT_EQ(c->GetClassSize(), mirror::DexCache::ClassSize()); 1078 1079 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/reflect/ArtField;", class_loader); 1080 EXPECT_EQ(c->GetClassSize(), mirror::ArtField::ClassSize()); 1081 1082 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/reflect/ArtMethod;", class_loader); 1083 EXPECT_EQ(c->GetClassSize(), mirror::ArtMethod::ClassSize()); 1084} 1085 1086} // namespace art 1087