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 #include <string_view>
22
23 #include "android-base/strings.h"
24
25 #include "art_field-inl.h"
26 #include "art_method-inl.h"
27 #include "base/enums.h"
28 #include "class_linker-inl.h"
29 #include "class_root-inl.h"
30 #include "common_runtime_test.h"
31 #include "dex/dex_file_types.h"
32 #include "dex/signature-inl.h"
33 #include "dex/standard_dex_file.h"
34 #include "entrypoints/entrypoint_utils-inl.h"
35 #include "experimental_flags.h"
36 #include "gc/heap.h"
37 #include "handle_scope-inl.h"
38 #include "mirror/array-alloc-inl.h"
39 #include "mirror/accessible_object.h"
40 #include "mirror/call_site.h"
41 #include "mirror/class-inl.h"
42 #include "mirror/class_ext.h"
43 #include "mirror/dex_cache.h"
44 #include "mirror/emulated_stack_frame.h"
45 #include "mirror/executable.h"
46 #include "mirror/field.h"
47 #include "mirror/method_handle_impl.h"
48 #include "mirror/method_handles_lookup.h"
49 #include "mirror/method_type-inl.h"
50 #include "mirror/object-inl.h"
51 #include "mirror/object_array-alloc-inl.h"
52 #include "mirror/object_array-inl.h"
53 #include "mirror/proxy.h"
54 #include "mirror/reference.h"
55 #include "mirror/stack_frame_info.h"
56 #include "mirror/stack_trace_element.h"
57 #include "mirror/string-inl.h"
58 #include "mirror/var_handle.h"
59 #include "scoped_thread_state_change-inl.h"
60 #include "thread-current-inl.h"
61
62 namespace art {
63
64 class ClassLinkerTest : public CommonRuntimeTest {
65 protected:
AssertNonExistentClass(const std::string & descriptor)66 void AssertNonExistentClass(const std::string& descriptor)
67 REQUIRES_SHARED(Locks::mutator_lock_) {
68 Thread* self = Thread::Current();
69 EXPECT_TRUE(class_linker_->FindSystemClass(self, descriptor.c_str()) == nullptr);
70 EXPECT_TRUE(self->IsExceptionPending());
71 StackHandleScope<1> hs(self);
72 Handle<mirror::Object> exception = hs.NewHandle<mirror::Object>(self->GetException());
73 self->ClearException();
74 ObjPtr<mirror::Class> exception_class =
75 class_linker_->FindSystemClass(self, "Ljava/lang/NoClassDefFoundError;");
76 EXPECT_TRUE(exception->InstanceOf(exception_class));
77 }
78
AssertPrimitiveClass(const std::string & descriptor)79 void AssertPrimitiveClass(const std::string& descriptor)
80 REQUIRES_SHARED(Locks::mutator_lock_) {
81 Thread* self = Thread::Current();
82 AssertPrimitiveClass(descriptor, class_linker_->FindSystemClass(self, descriptor.c_str()));
83 }
84
AssertPrimitiveClass(const std::string & descriptor,ObjPtr<mirror::Class> primitive)85 void AssertPrimitiveClass(const std::string& descriptor, ObjPtr<mirror::Class> primitive)
86 REQUIRES_SHARED(Locks::mutator_lock_) {
87 ASSERT_TRUE(primitive != nullptr);
88 ASSERT_TRUE(primitive->GetClass() != nullptr);
89 ASSERT_OBJ_PTR_EQ(primitive->GetClass(), primitive->GetClass()->GetClass());
90 EXPECT_TRUE(primitive->GetClass()->GetSuperClass() != nullptr);
91 std::string temp;
92 ASSERT_STREQ(descriptor.c_str(), primitive->GetDescriptor(&temp));
93 EXPECT_TRUE(primitive->GetSuperClass() == nullptr);
94 EXPECT_FALSE(primitive->HasSuperClass());
95 EXPECT_TRUE(primitive->GetClassLoader() == nullptr);
96 EXPECT_EQ(ClassStatus::kVisiblyInitialized, primitive->GetStatus());
97 EXPECT_FALSE(primitive->IsErroneous());
98 EXPECT_TRUE(primitive->IsLoaded());
99 EXPECT_TRUE(primitive->IsResolved());
100 EXPECT_FALSE(primitive->IsErroneousResolved());
101 EXPECT_TRUE(primitive->IsVerified());
102 EXPECT_TRUE(primitive->IsInitialized());
103 EXPECT_FALSE(primitive->IsArrayInstance());
104 EXPECT_FALSE(primitive->IsArrayClass());
105 EXPECT_TRUE(primitive->GetComponentType() == nullptr);
106 EXPECT_FALSE(primitive->IsInterface());
107 EXPECT_TRUE(primitive->IsPublic());
108 EXPECT_TRUE(primitive->IsFinal());
109 EXPECT_TRUE(primitive->IsPrimitive());
110 EXPECT_FALSE(primitive->IsSynthetic());
111 EXPECT_EQ(0U, primitive->NumDirectMethods());
112 EXPECT_EQ(0U, primitive->NumVirtualMethods());
113 EXPECT_EQ(0U, primitive->NumInstanceFields());
114 EXPECT_EQ(0U, primitive->NumStaticFields());
115 EXPECT_EQ(0U, primitive->NumDirectInterfaces());
116 EXPECT_FALSE(primitive->HasVTable());
117 EXPECT_EQ(0, primitive->GetIfTableCount());
118 EXPECT_TRUE(primitive->GetIfTable() != nullptr);
119 EXPECT_EQ(primitive->GetIfTable()->Count(), 0u);
120 EXPECT_EQ(kAccPublic | kAccFinal | kAccAbstract, primitive->GetAccessFlags());
121 }
122
AssertObjectClass(ObjPtr<mirror::Class> JavaLangObject)123 void AssertObjectClass(ObjPtr<mirror::Class> JavaLangObject)
124 REQUIRES_SHARED(Locks::mutator_lock_) {
125 ASSERT_TRUE(JavaLangObject != nullptr);
126 ASSERT_TRUE(JavaLangObject->GetClass() != nullptr);
127 ASSERT_OBJ_PTR_EQ(JavaLangObject->GetClass(), JavaLangObject->GetClass()->GetClass());
128 EXPECT_OBJ_PTR_EQ(JavaLangObject, JavaLangObject->GetClass()->GetSuperClass());
129 std::string temp;
130 ASSERT_STREQ(JavaLangObject->GetDescriptor(&temp), "Ljava/lang/Object;");
131 EXPECT_TRUE(JavaLangObject->GetSuperClass() == nullptr);
132 EXPECT_FALSE(JavaLangObject->HasSuperClass());
133 EXPECT_TRUE(JavaLangObject->GetClassLoader() == nullptr);
134 {
135 Thread* self = Thread::Current();
136 StackHandleScope<1> hs(self);
137 HandleWrapperObjPtr<mirror::Class> h(hs.NewHandleWrapper(&JavaLangObject));
138 ScopedThreadSuspension sts(self, ThreadState::kNative);
139 class_linker_->MakeInitializedClassesVisiblyInitialized(self, /*wait=*/ true);
140 // HandleWrapperObjPtr restores JavaLangObject here after becoming runnable again.
141 }
142 EXPECT_EQ(ClassStatus::kVisiblyInitialized, JavaLangObject->GetStatus());
143 EXPECT_FALSE(JavaLangObject->IsErroneous());
144 EXPECT_TRUE(JavaLangObject->IsLoaded());
145 EXPECT_TRUE(JavaLangObject->IsResolved());
146 EXPECT_FALSE(JavaLangObject->IsErroneousResolved());
147 EXPECT_TRUE(JavaLangObject->IsVerified());
148 EXPECT_TRUE(JavaLangObject->IsInitialized());
149 EXPECT_FALSE(JavaLangObject->IsArrayInstance());
150 EXPECT_FALSE(JavaLangObject->IsArrayClass());
151 EXPECT_TRUE(JavaLangObject->GetComponentType() == nullptr);
152 EXPECT_FALSE(JavaLangObject->IsInterface());
153 EXPECT_TRUE(JavaLangObject->IsPublic());
154 EXPECT_FALSE(JavaLangObject->IsFinal());
155 EXPECT_FALSE(JavaLangObject->IsPrimitive());
156 EXPECT_FALSE(JavaLangObject->IsSynthetic());
157 EXPECT_EQ(4U, JavaLangObject->NumDirectMethods());
158 EXPECT_EQ(11U, JavaLangObject->NumVirtualMethods());
159 EXPECT_EQ(2U, JavaLangObject->NumInstanceFields());
160 EXPECT_STREQ(JavaLangObject->GetInstanceField(0)->GetName(),
161 "shadow$_klass_");
162 EXPECT_STREQ(JavaLangObject->GetInstanceField(1)->GetName(),
163 "shadow$_monitor_");
164
165 EXPECT_EQ(0U, JavaLangObject->NumStaticFields());
166 EXPECT_EQ(0U, JavaLangObject->NumDirectInterfaces());
167
168 PointerSize pointer_size = class_linker_->GetImagePointerSize();
169 ArtMethod* unimplemented = runtime_->GetImtUnimplementedMethod();
170 ImTable* imt = JavaLangObject->GetImt(pointer_size);
171 ASSERT_NE(nullptr, imt);
172 for (size_t i = 0; i < ImTable::kSize; ++i) {
173 ASSERT_EQ(unimplemented, imt->Get(i, pointer_size));
174 }
175 }
176
AssertArrayClass(const std::string & array_descriptor,const std::string & component_type,ObjPtr<mirror::ClassLoader> class_loader)177 void AssertArrayClass(const std::string& array_descriptor,
178 const std::string& component_type,
179 ObjPtr<mirror::ClassLoader> class_loader)
180 REQUIRES_SHARED(Locks::mutator_lock_) {
181 Thread* self = Thread::Current();
182 StackHandleScope<2> hs(self);
183 Handle<mirror::ClassLoader> loader(hs.NewHandle(class_loader));
184 Handle<mirror::Class> array(
185 hs.NewHandle(class_linker_->FindClass(self, array_descriptor.c_str(), loader)));
186 std::string temp;
187 EXPECT_STREQ(component_type.c_str(), array->GetComponentType()->GetDescriptor(&temp));
188 EXPECT_OBJ_PTR_EQ(loader.Get(), array->GetClassLoader());
189 EXPECT_EQ(kAccFinal | kAccAbstract, (array->GetAccessFlags() & (kAccFinal | kAccAbstract)));
190 AssertArrayClass(array_descriptor, array);
191 }
192
AssertArrayClass(const std::string & array_descriptor,Handle<mirror::Class> array)193 void AssertArrayClass(const std::string& array_descriptor, Handle<mirror::Class> array)
194 REQUIRES_SHARED(Locks::mutator_lock_) {
195 ASSERT_TRUE(array != nullptr);
196 ASSERT_TRUE(array->GetClass() != nullptr);
197 ASSERT_OBJ_PTR_EQ(array->GetClass(), array->GetClass()->GetClass());
198 EXPECT_TRUE(array->GetClass()->GetSuperClass() != nullptr);
199 std::string temp;
200 ASSERT_STREQ(array_descriptor.c_str(), array->GetDescriptor(&temp));
201 EXPECT_TRUE(array->GetSuperClass() != nullptr);
202 Thread* self = Thread::Current();
203 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(self, "Ljava/lang/Object;"),
204 array->GetSuperClass());
205 EXPECT_TRUE(array->HasSuperClass());
206 ASSERT_TRUE(array->GetComponentType() != nullptr);
207 ASSERT_GT(strlen(array->GetComponentType()->GetDescriptor(&temp)), 0U);
208 EXPECT_EQ(ClassStatus::kVisiblyInitialized, array->GetStatus());
209 EXPECT_FALSE(array->IsErroneous());
210 EXPECT_TRUE(array->IsLoaded());
211 EXPECT_TRUE(array->IsResolved());
212 EXPECT_FALSE(array->IsErroneousResolved());
213 EXPECT_TRUE(array->IsVerified());
214 EXPECT_TRUE(array->IsInitialized());
215 EXPECT_FALSE(array->IsArrayInstance());
216 EXPECT_TRUE(array->IsArrayClass());
217 EXPECT_FALSE(array->IsInterface());
218 EXPECT_EQ(array->GetComponentType()->IsPublic(), array->IsPublic());
219 EXPECT_TRUE(array->IsFinal());
220 EXPECT_FALSE(array->IsPrimitive());
221 EXPECT_FALSE(array->IsSynthetic());
222 EXPECT_EQ(0U, array->NumDirectMethods());
223 EXPECT_EQ(0U, array->NumVirtualMethods());
224 EXPECT_EQ(0U, array->NumInstanceFields());
225 EXPECT_EQ(0U, array->NumStaticFields());
226 EXPECT_EQ(2U, array->NumDirectInterfaces());
227 EXPECT_TRUE(array->ShouldHaveImt());
228 EXPECT_TRUE(array->ShouldHaveEmbeddedVTable());
229 EXPECT_EQ(2, array->GetIfTableCount());
230 ASSERT_TRUE(array->GetIfTable() != nullptr);
231 ObjPtr<mirror::Class> direct_interface0 = array->GetDirectInterface(0);
232 EXPECT_TRUE(direct_interface0 != nullptr);
233 EXPECT_STREQ(direct_interface0->GetDescriptor(&temp), "Ljava/lang/Cloneable;");
234 ObjPtr<mirror::Class> direct_interface1 = array->GetDirectInterface(1);
235 EXPECT_STREQ(direct_interface1->GetDescriptor(&temp), "Ljava/io/Serializable;");
236 EXPECT_OBJ_PTR_EQ(class_linker_->FindArrayClass(self, array->GetComponentType()), array.Get());
237
238 PointerSize pointer_size = class_linker_->GetImagePointerSize();
239 ObjPtr<mirror::Class> JavaLangObject =
240 class_linker_->FindSystemClass(self, "Ljava/lang/Object;");
241 ImTable* JavaLangObject_imt = JavaLangObject->GetImt(pointer_size);
242 // IMT of a array class should be shared with the IMT of the java.lag.Object
243 ASSERT_EQ(JavaLangObject_imt, array->GetImt(pointer_size));
244 }
245
AssertMethod(ArtMethod * method)246 void AssertMethod(ArtMethod* method) REQUIRES_SHARED(Locks::mutator_lock_) {
247 EXPECT_TRUE(method != nullptr);
248 EXPECT_TRUE(method->GetDeclaringClass() != nullptr);
249 EXPECT_TRUE(method->GetName() != nullptr);
250 EXPECT_TRUE(method->GetSignature() != Signature::NoSignature());
251 }
252
AssertField(ObjPtr<mirror::Class> klass,ArtField * field)253 void AssertField(ObjPtr<mirror::Class> klass, ArtField* field)
254 REQUIRES_SHARED(Locks::mutator_lock_) {
255 EXPECT_TRUE(field != nullptr);
256 EXPECT_OBJ_PTR_EQ(klass, field->GetDeclaringClass());
257 EXPECT_TRUE(field->GetName() != nullptr);
258 EXPECT_TRUE(field->ResolveType() != nullptr);
259 }
260
AssertClass(const std::string & descriptor,Handle<mirror::Class> klass)261 void AssertClass(const std::string& descriptor, Handle<mirror::Class> klass)
262 REQUIRES_SHARED(Locks::mutator_lock_) {
263 std::string temp;
264 EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor(&temp));
265 if (descriptor == "Ljava/lang/Object;") {
266 EXPECT_FALSE(klass->HasSuperClass());
267 } else {
268 EXPECT_TRUE(klass->HasSuperClass());
269 EXPECT_TRUE(klass->GetSuperClass() != nullptr);
270 }
271 EXPECT_TRUE(klass->GetClass() != nullptr);
272 EXPECT_OBJ_PTR_EQ(klass->GetClass(), klass->GetClass()->GetClass());
273 EXPECT_TRUE(klass->GetDexCache() != nullptr);
274 EXPECT_TRUE(klass->IsLoaded());
275 EXPECT_TRUE(klass->IsResolved());
276 EXPECT_FALSE(klass->IsErroneousResolved());
277 EXPECT_FALSE(klass->IsErroneous());
278 EXPECT_FALSE(klass->IsArrayClass());
279 EXPECT_TRUE(klass->GetComponentType() == nullptr);
280 EXPECT_TRUE(klass->IsInSamePackage(klass.Get()));
281 std::string temp2;
282 EXPECT_TRUE(mirror::Class::IsInSamePackage(klass->GetDescriptor(&temp),
283 klass->GetDescriptor(&temp2)));
284 if (klass->IsInterface()) {
285 EXPECT_TRUE(klass->IsAbstract());
286 // Check that all methods are direct and either static (<clinit> or a regular static method),
287 // or private.
288 for (ArtMethod& m : klass->GetDirectMethods(kRuntimePointerSize)) {
289 EXPECT_TRUE(m.IsStatic() || m.IsPrivate());
290 EXPECT_TRUE(m.IsDirect());
291 }
292 } else {
293 if (!klass->IsSynthetic()) {
294 EXPECT_NE(0U, klass->NumDirectMethods());
295 }
296 }
297 EXPECT_EQ(klass->IsInterface(), !klass->HasVTable());
298 ObjPtr<mirror::IfTable> iftable = klass->GetIfTable();
299 for (int i = 0; i < klass->GetIfTableCount(); i++) {
300 ObjPtr<mirror::Class> interface = iftable->GetInterface(i);
301 ASSERT_TRUE(interface != nullptr);
302 if (klass->IsInterface()) {
303 EXPECT_EQ(0U, iftable->GetMethodArrayCount(i));
304 } else {
305 EXPECT_EQ(interface->NumDeclaredVirtualMethods(), iftable->GetMethodArrayCount(i));
306 }
307 }
308 if (klass->IsAbstract()) {
309 EXPECT_FALSE(klass->IsFinal());
310 } else {
311 EXPECT_FALSE(klass->IsAnnotation());
312 }
313 if (klass->IsFinal()) {
314 EXPECT_FALSE(klass->IsAbstract());
315 EXPECT_FALSE(klass->IsAnnotation());
316 }
317 if (klass->IsAnnotation()) {
318 EXPECT_FALSE(klass->IsFinal());
319 EXPECT_TRUE(klass->IsAbstract());
320 }
321
322 EXPECT_FALSE(klass->IsPrimitive());
323 EXPECT_TRUE(klass->CanAccess(klass.Get()));
324
325 for (ArtMethod& method : klass->GetDirectMethods(kRuntimePointerSize)) {
326 AssertMethod(&method);
327 EXPECT_TRUE(method.IsDirect());
328 EXPECT_OBJ_PTR_EQ(klass.Get(), method.GetDeclaringClass());
329 }
330
331 for (ArtMethod& method : klass->GetDeclaredVirtualMethods(kRuntimePointerSize)) {
332 AssertMethod(&method);
333 EXPECT_FALSE(method.IsDirect());
334 EXPECT_OBJ_PTR_EQ(klass.Get(), method.GetDeclaringClass());
335 }
336
337 for (ArtMethod& method : klass->GetCopiedMethods(kRuntimePointerSize)) {
338 AssertMethod(&method);
339 EXPECT_FALSE(method.IsDirect());
340 EXPECT_TRUE(method.IsCopied());
341 EXPECT_TRUE(method.GetDeclaringClass()->IsInterface())
342 << "declaring class: " << method.GetDeclaringClass()->PrettyClass();
343 EXPECT_TRUE(method.GetDeclaringClass()->IsAssignableFrom(klass.Get()))
344 << "declaring class: " << method.GetDeclaringClass()->PrettyClass();
345 }
346
347 for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
348 ArtField* field = klass->GetInstanceField(i);
349 AssertField(klass.Get(), field);
350 EXPECT_FALSE(field->IsStatic());
351 }
352
353 for (size_t i = 0; i < klass->NumStaticFields(); i++) {
354 ArtField* field = klass->GetStaticField(i);
355 AssertField(klass.Get(), field);
356 EXPECT_TRUE(field->IsStatic());
357 }
358
359 // Confirm that all instances field offsets are packed together at the start.
360 EXPECT_GE(klass->NumInstanceFields(), klass->NumReferenceInstanceFields());
361 MemberOffset start_ref_offset = klass->GetFirstReferenceInstanceFieldOffset();
362 MemberOffset end_ref_offset(start_ref_offset.Uint32Value() +
363 klass->NumReferenceInstanceFields() *
364 sizeof(mirror::HeapReference<mirror::Object>));
365 MemberOffset current_ref_offset = start_ref_offset;
366 for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
367 ArtField* field = klass->GetInstanceField(i);
368 ObjPtr<mirror::Class> field_type = field->ResolveType();
369 ASSERT_TRUE(field_type != nullptr);
370 if (!field->IsPrimitiveType()) {
371 ASSERT_TRUE(!field_type->IsPrimitive());
372 ASSERT_EQ(current_ref_offset.Uint32Value(), field->GetOffset().Uint32Value());
373 if (current_ref_offset.Uint32Value() == end_ref_offset.Uint32Value()) {
374 // While Reference.referent is not primitive, the ClassLinker
375 // treats it as such so that the garbage collector won't scan it.
376 EXPECT_EQ(field->PrettyField(), "java.lang.Object java.lang.ref.Reference.referent");
377 } else {
378 current_ref_offset = MemberOffset(current_ref_offset.Uint32Value() +
379 sizeof(mirror::HeapReference<mirror::Object>));
380 }
381 } else {
382 if (field->GetOffset().Uint32Value() < end_ref_offset.Uint32Value()) {
383 // Shuffled before references.
384 ASSERT_LT(field->GetOffset().Uint32Value(), start_ref_offset.Uint32Value());
385 CHECK(!IsAligned<4>(field->GetOffset().Uint32Value()));
386 }
387 }
388 }
389 ASSERT_EQ(end_ref_offset.Uint32Value(), current_ref_offset.Uint32Value());
390
391 uint32_t total_num_reference_instance_fields = 0;
392 ObjPtr<mirror::Class> k = klass.Get();
393 while (k != nullptr) {
394 total_num_reference_instance_fields += k->NumReferenceInstanceFields();
395 k = k->GetSuperClass();
396 }
397 EXPECT_GE(total_num_reference_instance_fields, 1U); // Should always have Object's class.
398 if (klass->GetReferenceInstanceOffsets() != mirror::Class::kClassWalkSuper) {
399 // The reference instance offsets have a bit set for each reference offset.
400 // +1 for Object's class.
401 EXPECT_EQ(static_cast<uint32_t>(POPCOUNT(klass->GetReferenceInstanceOffsets())) + 1,
402 total_num_reference_instance_fields);
403 }
404 }
405
AssertDexFileClass(ObjPtr<mirror::ClassLoader> class_loader,const std::string & descriptor)406 void AssertDexFileClass(ObjPtr<mirror::ClassLoader> class_loader, const std::string& descriptor)
407 REQUIRES_SHARED(Locks::mutator_lock_) {
408 ASSERT_FALSE(descriptor.empty());
409 Thread* self = Thread::Current();
410 StackHandleScope<1> hs(self);
411 Handle<mirror::Class> klass(
412 hs.NewHandle(class_linker_->FindSystemClass(self, descriptor.c_str())));
413 ASSERT_TRUE(klass != nullptr);
414 std::string temp;
415 EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor(&temp));
416 EXPECT_OBJ_PTR_EQ(class_loader, klass->GetClassLoader());
417 if (klass->IsPrimitive()) {
418 AssertPrimitiveClass(descriptor, klass.Get());
419 } else if (klass->IsArrayClass()) {
420 AssertArrayClass(descriptor, klass);
421 } else {
422 AssertClass(descriptor, klass);
423 }
424 }
425
AssertDexFile(const DexFile & dex,ObjPtr<mirror::ClassLoader> class_loader)426 void AssertDexFile(const DexFile& dex, ObjPtr<mirror::ClassLoader> class_loader)
427 REQUIRES_SHARED(Locks::mutator_lock_) {
428 // Verify all the classes defined in this file
429 for (size_t i = 0; i < dex.NumClassDefs(); i++) {
430 const dex::ClassDef& class_def = dex.GetClassDef(i);
431 const char* descriptor = dex.GetClassDescriptor(class_def);
432 AssertDexFileClass(class_loader, descriptor);
433 }
434 // Verify all the types referenced by this file
435 for (size_t i = 0; i < dex.NumTypeIds(); i++) {
436 const dex::TypeId& type_id = dex.GetTypeId(dex::TypeIndex(i));
437 const char* descriptor = dex.GetTypeDescriptor(type_id);
438 AssertDexFileClass(class_loader, descriptor);
439 }
440 TestRootVisitor visitor;
441 class_linker_->VisitRoots(&visitor, kVisitRootFlagAllRoots);
442 }
443
444 class TestRootVisitor : public SingleRootVisitor {
445 public:
VisitRoot(mirror::Object * root,const RootInfo & info ATTRIBUTE_UNUSED)446 void VisitRoot(mirror::Object* root, const RootInfo& info ATTRIBUTE_UNUSED) override {
447 EXPECT_TRUE(root != nullptr);
448 }
449 };
450 };
451
452 class ClassLinkerMethodHandlesTest : public ClassLinkerTest {
453 protected:
SetUpRuntimeOptions(RuntimeOptions * options)454 void SetUpRuntimeOptions(RuntimeOptions* options) override {
455 CommonRuntimeTest::SetUpRuntimeOptions(options);
456 }
457 };
458
459 struct CheckOffset {
460 size_t cpp_offset;
461 const char* java_name;
CheckOffsetart::CheckOffset462 CheckOffset(size_t c, const char* j) : cpp_offset(c), java_name(j) {}
463 };
464
465 template <typename T>
466 struct CheckOffsets {
CheckOffsetsart::CheckOffsets467 CheckOffsets(bool is_static_in, const char* class_descriptor_in)
468 : is_static(is_static_in), class_descriptor(class_descriptor_in) {}
469 bool is_static;
470 std::string class_descriptor;
471 std::vector<CheckOffset> offsets;
472
Checkart::CheckOffsets473 bool Check() REQUIRES_SHARED(Locks::mutator_lock_) {
474 Thread* self = Thread::Current();
475 ObjPtr<mirror::Class> klass =
476 Runtime::Current()->GetClassLinker()->FindSystemClass(self, class_descriptor.c_str());
477 CHECK(klass != nullptr) << class_descriptor;
478 CHECK(klass->IsMirrored()) << class_descriptor;
479
480 bool error = false;
481
482 // Classes have a different size due to padding field. Strings are variable length.
483 if (!klass->IsClassClass() && !klass->IsStringClass() && !is_static) {
484 // The RoundUp is required for some mirror classes that have a gap at the end,
485 // such as AccessibleObject, ByteArrayViewVarHandle and ByteBufferViewVarHandle.
486 // For example, the AccessibleObject has size 9 according to the class linker.
487 // However, the C++ sizeof(AccessibleObject) is 12 bytes due to alignment, even
488 // though members in C++ subclasses are actually starting at offset 9.
489 //
490 // TODO: We could define a subclass with a `uint8_t` member and check its offset instead.
491 static constexpr size_t kPackAlignment = 4;
492 size_t expected_size = RoundUp(klass->GetObjectSize(), kPackAlignment);
493 if (sizeof(T) != expected_size) {
494 LOG(ERROR) << "Class size mismatch:"
495 << " class=" << class_descriptor
496 << " Java=" << expected_size
497 << " C++=" << sizeof(T);
498 error = true;
499 }
500 }
501
502 size_t num_fields = is_static ? klass->NumStaticFields() : klass->NumInstanceFields();
503 if (offsets.size() != num_fields) {
504 LOG(ERROR) << "Field count mismatch:"
505 << " class=" << class_descriptor
506 << " Java=" << num_fields
507 << " C++=" << offsets.size();
508 error = true;
509 }
510
511 for (size_t i = 0; i < offsets.size(); i++) {
512 ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
513 std::string_view field_name(field->GetName());
514 if (field_name != offsets[i].java_name) {
515 error = true;
516 }
517 }
518 if (error) {
519 for (size_t i = 0; i < offsets.size(); i++) {
520 CheckOffset& offset = offsets[i];
521 ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
522 std::string_view field_name(field->GetName());
523 if (field_name != offsets[i].java_name) {
524 LOG(ERROR) << "JAVA FIELD ORDER MISMATCH NEXT LINE:";
525 }
526 LOG(ERROR) << "Java field order:"
527 << " i=" << i << " class=" << class_descriptor
528 << " Java=" << field_name
529 << " CheckOffsets=" << offset.java_name;
530 }
531 }
532
533 for (size_t i = 0; i < offsets.size(); i++) {
534 CheckOffset& offset = offsets[i];
535 ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
536 if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
537 error = true;
538 }
539 }
540 if (error) {
541 for (size_t i = 0; i < offsets.size(); i++) {
542 CheckOffset& offset = offsets[i];
543 ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
544 if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
545 LOG(ERROR) << "OFFSET MISMATCH NEXT LINE:";
546 }
547 LOG(ERROR) << "Offset: class=" << class_descriptor << " field=" << offset.java_name
548 << " Java=" << field->GetOffset().Uint32Value() << " C++=" << offset.cpp_offset;
549 }
550 }
551
552 return !error;
553 };
554
addOffsetart::CheckOffsets555 void addOffset(size_t offset, const char* name) {
556 offsets.push_back(CheckOffset(offset, name));
557 }
558
559 private:
560 DISALLOW_IMPLICIT_CONSTRUCTORS(CheckOffsets);
561 };
562
563 // Note that ClassLinkerTest.ValidateFieldOrderOfJavaCppUnionClasses
564 // is first since if it is failing, others are unlikely to succeed.
565
566 struct ObjectOffsets : public CheckOffsets<mirror::Object> {
ObjectOffsetsart::ObjectOffsets567 ObjectOffsets() : CheckOffsets<mirror::Object>(false, "Ljava/lang/Object;") {
568 addOffset(OFFSETOF_MEMBER(mirror::Object, klass_), "shadow$_klass_");
569 addOffset(OFFSETOF_MEMBER(mirror::Object, monitor_), "shadow$_monitor_");
570 }
571 };
572
573 struct ClassOffsets : public CheckOffsets<mirror::Class> {
ClassOffsetsart::ClassOffsets574 ClassOffsets() : CheckOffsets<mirror::Class>(false, "Ljava/lang/Class;") {
575 addOffset(OFFSETOF_MEMBER(mirror::Class, access_flags_), "accessFlags");
576 addOffset(OFFSETOF_MEMBER(mirror::Class, class_flags_), "classFlags");
577 addOffset(OFFSETOF_MEMBER(mirror::Class, class_loader_), "classLoader");
578 addOffset(OFFSETOF_MEMBER(mirror::Class, class_size_), "classSize");
579 addOffset(OFFSETOF_MEMBER(mirror::Class, clinit_thread_id_), "clinitThreadId");
580 addOffset(OFFSETOF_MEMBER(mirror::Class, component_type_), "componentType");
581 addOffset(OFFSETOF_MEMBER(mirror::Class, copied_methods_offset_), "copiedMethodsOffset");
582 addOffset(OFFSETOF_MEMBER(mirror::Class, dex_cache_), "dexCache");
583 addOffset(OFFSETOF_MEMBER(mirror::Class, dex_class_def_idx_), "dexClassDefIndex");
584 addOffset(OFFSETOF_MEMBER(mirror::Class, dex_type_idx_), "dexTypeIndex");
585 addOffset(OFFSETOF_MEMBER(mirror::Class, ext_data_), "extData");
586 addOffset(OFFSETOF_MEMBER(mirror::Class, ifields_), "iFields");
587 addOffset(OFFSETOF_MEMBER(mirror::Class, iftable_), "ifTable");
588 addOffset(OFFSETOF_MEMBER(mirror::Class, methods_), "methods");
589 addOffset(OFFSETOF_MEMBER(mirror::Class, name_), "name");
590 addOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_instance_fields_),
591 "numReferenceInstanceFields");
592 addOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_static_fields_),
593 "numReferenceStaticFields");
594 addOffset(OFFSETOF_MEMBER(mirror::Class, object_size_), "objectSize");
595 addOffset(OFFSETOF_MEMBER(mirror::Class, object_size_alloc_fast_path_),
596 "objectSizeAllocFastPath");
597 addOffset(OFFSETOF_MEMBER(mirror::Class, primitive_type_), "primitiveType");
598 addOffset(OFFSETOF_MEMBER(mirror::Class, reference_instance_offsets_),
599 "referenceInstanceOffsets");
600 addOffset(OFFSETOF_MEMBER(mirror::Class, sfields_), "sFields");
601 addOffset(OFFSETOF_MEMBER(mirror::Class, status_), "status");
602 addOffset(OFFSETOF_MEMBER(mirror::Class, super_class_), "superClass");
603 addOffset(OFFSETOF_MEMBER(mirror::Class, virtual_methods_offset_), "virtualMethodsOffset");
604 addOffset(OFFSETOF_MEMBER(mirror::Class, vtable_), "vtable");
605 }
606 };
607
608 struct ClassExtOffsets : public CheckOffsets<mirror::ClassExt> {
ClassExtOffsetsart::ClassExtOffsets609 ClassExtOffsets() : CheckOffsets<mirror::ClassExt>(false, "Ldalvik/system/ClassExt;") {
610 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, class_value_map_), "classValueMap");
611 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, erroneous_state_error_), "erroneousStateError");
612 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, instance_jfield_ids_), "instanceJfieldIDs");
613 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, jmethod_ids_), "jmethodIDs");
614 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, obsolete_class_), "obsoleteClass");
615 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, obsolete_dex_caches_), "obsoleteDexCaches");
616 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, obsolete_methods_), "obsoleteMethods");
617 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, original_dex_file_), "originalDexFile");
618 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, pre_redefine_class_def_index_),
619 "preRedefineClassDefIndex");
620 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, pre_redefine_dex_file_ptr_),
621 "preRedefineDexFilePtr");
622 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, static_jfield_ids_), "staticJfieldIDs");
623 }
624 };
625
626 struct StringOffsets : public CheckOffsets<mirror::String> {
StringOffsetsart::StringOffsets627 StringOffsets() : CheckOffsets<mirror::String>(false, "Ljava/lang/String;") {
628 addOffset(OFFSETOF_MEMBER(mirror::String, count_), "count");
629 addOffset(OFFSETOF_MEMBER(mirror::String, hash_code_), "hash");
630 }
631 };
632
633 struct ThrowableOffsets : public CheckOffsets<mirror::Throwable> {
ThrowableOffsetsart::ThrowableOffsets634 ThrowableOffsets() : CheckOffsets<mirror::Throwable>(false, "Ljava/lang/Throwable;") {
635 addOffset(OFFSETOF_MEMBER(mirror::Throwable, backtrace_), "backtrace");
636 addOffset(OFFSETOF_MEMBER(mirror::Throwable, cause_), "cause");
637 addOffset(OFFSETOF_MEMBER(mirror::Throwable, detail_message_), "detailMessage");
638 addOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_trace_), "stackTrace");
639 addOffset(OFFSETOF_MEMBER(mirror::Throwable, suppressed_exceptions_), "suppressedExceptions");
640 }
641 };
642
643 struct StackTraceElementOffsets : public CheckOffsets<mirror::StackTraceElement> {
StackTraceElementOffsetsart::StackTraceElementOffsets644 StackTraceElementOffsets() : CheckOffsets<mirror::StackTraceElement>(
645 false, "Ljava/lang/StackTraceElement;") {
646 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, declaring_class_), "declaringClass");
647 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, file_name_), "fileName");
648 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, line_number_), "lineNumber");
649 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, method_name_), "methodName");
650 }
651 };
652
653 struct StackFrameInfoOffsets : public CheckOffsets<mirror::StackFrameInfo> {
StackFrameInfoOffsetsart::StackFrameInfoOffsets654 StackFrameInfoOffsets() : CheckOffsets<mirror::StackFrameInfo>(
655 false, "Ljava/lang/StackFrameInfo;") {
656 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, bci_), "bci");
657 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, declaring_class_), "declaringClass");
658 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, file_name_), "fileName");
659 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, line_number_), "lineNumber");
660 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, method_name_), "methodName");
661 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, method_type_), "methodType");
662 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, retain_class_ref_), "retainClassRef");
663 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, ste_), "ste");
664 }
665 };
666
667 struct ClassLoaderOffsets : public CheckOffsets<mirror::ClassLoader> {
ClassLoaderOffsetsart::ClassLoaderOffsets668 ClassLoaderOffsets() : CheckOffsets<mirror::ClassLoader>(false, "Ljava/lang/ClassLoader;") {
669 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, allocator_), "allocator");
670 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, class_table_), "classTable");
671 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, packages_), "packages");
672 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, parent_), "parent");
673 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, proxyCache_), "proxyCache");
674 }
675 };
676
677 struct ProxyOffsets : public CheckOffsets<mirror::Proxy> {
ProxyOffsetsart::ProxyOffsets678 ProxyOffsets() : CheckOffsets<mirror::Proxy>(false, "Ljava/lang/reflect/Proxy;") {
679 addOffset(OFFSETOF_MEMBER(mirror::Proxy, h_), "h");
680 }
681 };
682
683 struct DexCacheOffsets : public CheckOffsets<mirror::DexCache> {
DexCacheOffsetsart::DexCacheOffsets684 DexCacheOffsets() : CheckOffsets<mirror::DexCache>(false, "Ljava/lang/DexCache;") {
685 addOffset(OFFSETOF_MEMBER(mirror::DexCache, class_loader_), "classLoader");
686 addOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_file_), "dexFile");
687 addOffset(OFFSETOF_MEMBER(mirror::DexCache, location_), "location");
688 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_call_sites_), "resolvedCallSites");
689 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_), "resolvedFields");
690 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_array_), "resolvedFieldsArray");
691 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_method_types_), "resolvedMethodTypes");
692 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_method_types_array_),
693 "resolvedMethodTypesArray");
694 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_), "resolvedMethods");
695 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_array_), "resolvedMethodsArray");
696 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_), "resolvedTypes");
697 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_array_), "resolvedTypesArray");
698 addOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_), "strings");
699 addOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_array_), "stringsArray");
700 }
701 };
702
703 struct ReferenceOffsets : public CheckOffsets<mirror::Reference> {
ReferenceOffsetsart::ReferenceOffsets704 ReferenceOffsets() : CheckOffsets<mirror::Reference>(false, "Ljava/lang/ref/Reference;") {
705 addOffset(OFFSETOF_MEMBER(mirror::Reference, pending_next_), "pendingNext");
706 addOffset(OFFSETOF_MEMBER(mirror::Reference, queue_), "queue");
707 addOffset(OFFSETOF_MEMBER(mirror::Reference, queue_next_), "queueNext");
708 addOffset(OFFSETOF_MEMBER(mirror::Reference, referent_), "referent");
709 }
710 };
711
712 struct FinalizerReferenceOffsets : public CheckOffsets<mirror::FinalizerReference> {
FinalizerReferenceOffsetsart::FinalizerReferenceOffsets713 FinalizerReferenceOffsets() : CheckOffsets<mirror::FinalizerReference>(
714 false, "Ljava/lang/ref/FinalizerReference;") {
715 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, next_), "next");
716 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, prev_), "prev");
717 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, zombie_), "zombie");
718 }
719 };
720
721 struct AccessibleObjectOffsets : public CheckOffsets<mirror::AccessibleObject> {
AccessibleObjectOffsetsart::AccessibleObjectOffsets722 AccessibleObjectOffsets() : CheckOffsets<mirror::AccessibleObject>(
723 false, "Ljava/lang/reflect/AccessibleObject;") {
724 addOffset(mirror::AccessibleObject::FlagOffset().Uint32Value(), "override");
725 }
726 };
727
728 struct FieldOffsets : public CheckOffsets<mirror::Field> {
FieldOffsetsart::FieldOffsets729 FieldOffsets() : CheckOffsets<mirror::Field>(false, "Ljava/lang/reflect/Field;") {
730 addOffset(OFFSETOF_MEMBER(mirror::Field, access_flags_), "accessFlags");
731 addOffset(OFFSETOF_MEMBER(mirror::Field, art_field_index_), "artFieldIndex");
732 addOffset(OFFSETOF_MEMBER(mirror::Field, declaring_class_), "declaringClass");
733 addOffset(OFFSETOF_MEMBER(mirror::Field, offset_), "offset");
734 addOffset(OFFSETOF_MEMBER(mirror::Field, type_), "type");
735 }
736 };
737
738 struct ExecutableOffsets : public CheckOffsets<mirror::Executable> {
ExecutableOffsetsart::ExecutableOffsets739 ExecutableOffsets() : CheckOffsets<mirror::Executable>(
740 false, "Ljava/lang/reflect/Executable;") {
741 addOffset(OFFSETOF_MEMBER(mirror::Executable, access_flags_), "accessFlags");
742 addOffset(OFFSETOF_MEMBER(mirror::Executable, art_method_), "artMethod");
743 addOffset(OFFSETOF_MEMBER(mirror::Executable, declaring_class_), "declaringClass");
744 addOffset(OFFSETOF_MEMBER(mirror::Executable, declaring_class_of_overridden_method_),
745 "declaringClassOfOverriddenMethod");
746 addOffset(OFFSETOF_MEMBER(mirror::Executable, dex_method_index_), "dexMethodIndex");
747 addOffset(OFFSETOF_MEMBER(mirror::Executable, has_real_parameter_data_),
748 "hasRealParameterData");
749 addOffset(OFFSETOF_MEMBER(mirror::Executable, parameters_), "parameters");
750 }
751 };
752
753 struct MethodTypeOffsets : public CheckOffsets<mirror::MethodType> {
MethodTypeOffsetsart::MethodTypeOffsets754 MethodTypeOffsets() : CheckOffsets<mirror::MethodType>(
755 false, "Ljava/lang/invoke/MethodType;") {
756 addOffset(OFFSETOF_MEMBER(mirror::MethodType, form_), "form");
757 addOffset(OFFSETOF_MEMBER(mirror::MethodType, method_descriptor_), "methodDescriptor");
758 addOffset(OFFSETOF_MEMBER(mirror::MethodType, p_types_), "ptypes");
759 addOffset(OFFSETOF_MEMBER(mirror::MethodType, r_type_), "rtype");
760 addOffset(OFFSETOF_MEMBER(mirror::MethodType, wrap_alt_), "wrapAlt");
761 }
762 };
763
764 struct MethodHandleOffsets : public CheckOffsets<mirror::MethodHandle> {
MethodHandleOffsetsart::MethodHandleOffsets765 MethodHandleOffsets() : CheckOffsets<mirror::MethodHandle>(
766 false, "Ljava/lang/invoke/MethodHandle;") {
767 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, art_field_or_method_), "artFieldOrMethod");
768 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, as_type_cache_), "asTypeCache");
769 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, cached_spread_invoker_),
770 "cachedSpreadInvoker");
771 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, handle_kind_), "handleKind");
772 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, method_type_), "type");
773 }
774 };
775
776 struct MethodHandleImplOffsets : public CheckOffsets<mirror::MethodHandleImpl> {
MethodHandleImplOffsetsart::MethodHandleImplOffsets777 MethodHandleImplOffsets() : CheckOffsets<mirror::MethodHandleImpl>(
778 false, "Ljava/lang/invoke/MethodHandleImpl;") {
779 addOffset(OFFSETOF_MEMBER(mirror::MethodHandleImpl, info_), "info");
780 }
781 };
782
783 struct MethodHandlesLookupOffsets : public CheckOffsets<mirror::MethodHandlesLookup> {
MethodHandlesLookupOffsetsart::MethodHandlesLookupOffsets784 MethodHandlesLookupOffsets() : CheckOffsets<mirror::MethodHandlesLookup>(
785 false, "Ljava/lang/invoke/MethodHandles$Lookup;") {
786 addOffset(OFFSETOF_MEMBER(mirror::MethodHandlesLookup, allowed_modes_), "allowedModes");
787 addOffset(OFFSETOF_MEMBER(mirror::MethodHandlesLookup, lookup_class_), "lookupClass");
788 }
789 };
790
791 struct EmulatedStackFrameOffsets : public CheckOffsets<mirror::EmulatedStackFrame> {
EmulatedStackFrameOffsetsart::EmulatedStackFrameOffsets792 EmulatedStackFrameOffsets() : CheckOffsets<mirror::EmulatedStackFrame>(
793 false, "Ldalvik/system/EmulatedStackFrame;") {
794 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, references_), "references");
795 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, stack_frame_), "stackFrame");
796 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, type_), "type");
797 }
798 };
799
800 struct CallSiteOffsets : public CheckOffsets<mirror::CallSite> {
CallSiteOffsetsart::CallSiteOffsets801 CallSiteOffsets() : CheckOffsets<mirror::CallSite>(
802 false, "Ljava/lang/invoke/CallSite;") {
803 addOffset(OFFSETOF_MEMBER(mirror::CallSite, target_), "target");
804 }
805 };
806
807 struct VarHandleOffsets : public CheckOffsets<mirror::VarHandle> {
VarHandleOffsetsart::VarHandleOffsets808 VarHandleOffsets() : CheckOffsets<mirror::VarHandle>(
809 false, "Ljava/lang/invoke/VarHandle;") {
810 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, access_modes_bit_mask_), "accessModesBitMask");
811 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, coordinate_type0_), "coordinateType0");
812 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, coordinate_type1_), "coordinateType1");
813 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, var_type_), "varType");
814 }
815 };
816
817 struct FieldVarHandleOffsets : public CheckOffsets<mirror::FieldVarHandle> {
FieldVarHandleOffsetsart::FieldVarHandleOffsets818 FieldVarHandleOffsets() : CheckOffsets<mirror::FieldVarHandle>(
819 false, "Ljava/lang/invoke/FieldVarHandle;") {
820 addOffset(OFFSETOF_MEMBER(mirror::FieldVarHandle, art_field_), "artField");
821 }
822 };
823
824 struct StaticFieldVarHandleOffsets : public CheckOffsets<mirror::StaticFieldVarHandle> {
StaticFieldVarHandleOffsetsart::StaticFieldVarHandleOffsets825 StaticFieldVarHandleOffsets() : CheckOffsets<mirror::StaticFieldVarHandle>(
826 false, "Ljava/lang/invoke/StaticFieldVarHandle;") {
827 addOffset(OFFSETOF_MEMBER(mirror::StaticFieldVarHandle, declaring_class_), "declaringClass");
828 }
829 };
830
831 struct ArrayElementVarHandleOffsets : public CheckOffsets<mirror::ArrayElementVarHandle> {
ArrayElementVarHandleOffsetsart::ArrayElementVarHandleOffsets832 ArrayElementVarHandleOffsets() : CheckOffsets<mirror::ArrayElementVarHandle>(
833 false, "Ljava/lang/invoke/ArrayElementVarHandle;") {
834 }
835 };
836
837 struct ByteArrayViewVarHandleOffsets : public CheckOffsets<mirror::ByteArrayViewVarHandle> {
ByteArrayViewVarHandleOffsetsart::ByteArrayViewVarHandleOffsets838 ByteArrayViewVarHandleOffsets() : CheckOffsets<mirror::ByteArrayViewVarHandle>(
839 false, "Ljava/lang/invoke/ByteArrayViewVarHandle;") {
840 addOffset(OFFSETOF_MEMBER(mirror::ByteArrayViewVarHandle, native_byte_order_),
841 "nativeByteOrder");
842 }
843 };
844
845 struct ByteBufferViewVarHandleOffsets : public CheckOffsets<mirror::ByteBufferViewVarHandle> {
ByteBufferViewVarHandleOffsetsart::ByteBufferViewVarHandleOffsets846 ByteBufferViewVarHandleOffsets() : CheckOffsets<mirror::ByteBufferViewVarHandle>(
847 false, "Ljava/lang/invoke/ByteBufferViewVarHandle;") {
848 addOffset(OFFSETOF_MEMBER(mirror::ByteBufferViewVarHandle, native_byte_order_),
849 "nativeByteOrder");
850 }
851 };
852
853 // C++ fields must exactly match the fields in the Java classes. If this fails,
854 // reorder the fields in the C++ class. Managed class fields are ordered by
855 // ClassLinker::LinkFieldsHelper::LinkFields.
TEST_F(ClassLinkerTest,ValidateFieldOrderOfJavaCppUnionClasses)856 TEST_F(ClassLinkerTest, ValidateFieldOrderOfJavaCppUnionClasses) {
857 ScopedObjectAccess soa(Thread::Current());
858 EXPECT_TRUE(ObjectOffsets().Check());
859 EXPECT_TRUE(ClassOffsets().Check());
860 EXPECT_TRUE(ClassExtOffsets().Check());
861 EXPECT_TRUE(StringOffsets().Check());
862 EXPECT_TRUE(ThrowableOffsets().Check());
863 EXPECT_TRUE(StackTraceElementOffsets().Check());
864 EXPECT_TRUE(ClassLoaderOffsets().Check());
865 EXPECT_TRUE(ProxyOffsets().Check());
866 EXPECT_TRUE(DexCacheOffsets().Check());
867 EXPECT_TRUE(ReferenceOffsets().Check());
868 EXPECT_TRUE(FinalizerReferenceOffsets().Check());
869 EXPECT_TRUE(AccessibleObjectOffsets().Check());
870 EXPECT_TRUE(FieldOffsets().Check());
871 EXPECT_TRUE(ExecutableOffsets().Check());
872 EXPECT_TRUE(MethodTypeOffsets().Check());
873 EXPECT_TRUE(MethodHandleOffsets().Check());
874 EXPECT_TRUE(MethodHandleImplOffsets().Check());
875 EXPECT_TRUE(MethodHandlesLookupOffsets().Check());
876 EXPECT_TRUE(EmulatedStackFrameOffsets().Check());
877 EXPECT_TRUE(CallSiteOffsets().Check());
878 EXPECT_TRUE(VarHandleOffsets().Check());
879 EXPECT_TRUE(FieldVarHandleOffsets().Check());
880 EXPECT_TRUE(ArrayElementVarHandleOffsets().Check());
881 EXPECT_TRUE(ByteArrayViewVarHandleOffsets().Check());
882 EXPECT_TRUE(ByteBufferViewVarHandleOffsets().Check());
883 EXPECT_TRUE(StackFrameInfoOffsets().Check());
884 }
885
TEST_F(ClassLinkerTest,FindClassNonexistent)886 TEST_F(ClassLinkerTest, FindClassNonexistent) {
887 ScopedObjectAccess soa(Thread::Current());
888 AssertNonExistentClass("NoSuchClass;");
889 AssertNonExistentClass("LNoSuchClass;");
890 }
891
TEST_F(ClassLinkerTest,GetDexFiles)892 TEST_F(ClassLinkerTest, GetDexFiles) {
893 ScopedObjectAccess soa(Thread::Current());
894
895 jobject jclass_loader = LoadDex("Nested");
896 std::vector<const DexFile*> dex_files(GetDexFiles(jclass_loader));
897 ASSERT_EQ(dex_files.size(), 1U);
898 EXPECT_TRUE(android::base::EndsWith(dex_files[0]->GetLocation(), "Nested.jar"));
899
900 jobject jclass_loader2 = LoadDex("MultiDex");
901 std::vector<const DexFile*> dex_files2(GetDexFiles(jclass_loader2));
902 ASSERT_EQ(dex_files2.size(), 2U);
903 EXPECT_TRUE(android::base::EndsWith(dex_files2[0]->GetLocation(), "MultiDex.jar"));
904 }
905
TEST_F(ClassLinkerTest,FindClassNested)906 TEST_F(ClassLinkerTest, FindClassNested) {
907 ScopedObjectAccess soa(Thread::Current());
908 StackHandleScope<1> hs(soa.Self());
909 Handle<mirror::ClassLoader> class_loader(
910 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Nested"))));
911
912 ObjPtr<mirror::Class> outer = class_linker_->FindClass(soa.Self(), "LNested;", class_loader);
913 ASSERT_TRUE(outer != nullptr);
914 EXPECT_EQ(0U, outer->NumVirtualMethods());
915 EXPECT_EQ(1U, outer->NumDirectMethods());
916
917 ObjPtr<mirror::Class> inner =
918 class_linker_->FindClass(soa.Self(), "LNested$Inner;", class_loader);
919 ASSERT_TRUE(inner != nullptr);
920 EXPECT_EQ(0U, inner->NumVirtualMethods());
921 EXPECT_EQ(1U, inner->NumDirectMethods());
922 }
923
TEST_F(ClassLinkerTest,FindClass_Primitives)924 TEST_F(ClassLinkerTest, FindClass_Primitives) {
925 ScopedObjectAccess soa(Thread::Current());
926 const std::string expected("BCDFIJSZV");
927 for (int ch = 1; ch < 256; ++ch) {
928 std::string descriptor;
929 descriptor.push_back(ch);
930 if (expected.find(ch) == std::string::npos) {
931 AssertNonExistentClass(descriptor);
932 } else {
933 AssertPrimitiveClass(descriptor);
934 }
935 }
936 }
937
TEST_F(ClassLinkerTest,FindClass)938 TEST_F(ClassLinkerTest, FindClass) {
939 ScopedObjectAccess soa(Thread::Current());
940 StackHandleScope<2> hs(soa.Self());
941 Handle<mirror::Class> JavaLangObject = hs.NewHandle(
942 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"));
943 AssertObjectClass(JavaLangObject.Get());
944
945 Handle<mirror::ClassLoader> class_loader(
946 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
947 AssertNonExistentClass("LMyClass;");
948 ObjPtr<mirror::Class> MyClass = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader);
949 ASSERT_TRUE(MyClass != nullptr);
950 ASSERT_TRUE(MyClass->GetClass() != nullptr);
951 ASSERT_OBJ_PTR_EQ(MyClass->GetClass(), MyClass->GetClass()->GetClass());
952 EXPECT_OBJ_PTR_EQ(JavaLangObject.Get(), MyClass->GetClass()->GetSuperClass());
953 std::string temp;
954 ASSERT_STREQ(MyClass->GetDescriptor(&temp), "LMyClass;");
955 EXPECT_OBJ_PTR_EQ(MyClass->GetSuperClass(), JavaLangObject.Get());
956 EXPECT_TRUE(MyClass->HasSuperClass());
957 EXPECT_OBJ_PTR_EQ(class_loader.Get(), MyClass->GetClassLoader());
958 EXPECT_EQ(ClassStatus::kResolved, MyClass->GetStatus());
959 EXPECT_FALSE(MyClass->IsErroneous());
960 EXPECT_TRUE(MyClass->IsLoaded());
961 EXPECT_TRUE(MyClass->IsResolved());
962 EXPECT_FALSE(MyClass->IsErroneousResolved());
963 EXPECT_FALSE(MyClass->IsVerified());
964 EXPECT_FALSE(MyClass->IsInitialized());
965 EXPECT_FALSE(MyClass->IsArrayInstance());
966 EXPECT_FALSE(MyClass->IsArrayClass());
967 EXPECT_TRUE(MyClass->GetComponentType() == nullptr);
968 EXPECT_FALSE(MyClass->IsInterface());
969 EXPECT_FALSE(MyClass->IsPublic());
970 EXPECT_FALSE(MyClass->IsFinal());
971 EXPECT_FALSE(MyClass->IsPrimitive());
972 EXPECT_FALSE(MyClass->IsSynthetic());
973 EXPECT_EQ(1U, MyClass->NumDirectMethods());
974 EXPECT_EQ(0U, MyClass->NumVirtualMethods());
975 EXPECT_EQ(0U, MyClass->NumInstanceFields());
976 EXPECT_EQ(0U, MyClass->NumStaticFields());
977 EXPECT_EQ(0U, MyClass->NumDirectInterfaces());
978
979 EXPECT_OBJ_PTR_EQ(JavaLangObject->GetClass()->GetClass(), MyClass->GetClass()->GetClass());
980
981 // created by class_linker
982 AssertArrayClass("[C", "C", nullptr);
983 AssertArrayClass("[Ljava/lang/Object;", "Ljava/lang/Object;", nullptr);
984 // synthesized on the fly
985 AssertArrayClass("[[C", "[C", nullptr);
986 AssertArrayClass("[[[LMyClass;", "[[LMyClass;", class_loader.Get());
987 // or not available at all
988 AssertNonExistentClass("[[[[LNonExistentClass;");
989 }
990
TEST_F(ClassLinkerTest,LookupResolvedType)991 TEST_F(ClassLinkerTest, LookupResolvedType) {
992 ScopedObjectAccess soa(Thread::Current());
993 StackHandleScope<1> hs(soa.Self());
994 Handle<mirror::ClassLoader> class_loader(
995 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
996 AssertNonExistentClass("LMyClass;");
997 ObjPtr<mirror::Class> klass = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader);
998 dex::TypeIndex type_idx = klass->GetClassDef()->class_idx_;
999 ObjPtr<mirror::DexCache> dex_cache = klass->GetDexCache();
1000 EXPECT_OBJ_PTR_EQ(
1001 class_linker_->LookupResolvedType(type_idx, dex_cache, class_loader.Get()),
1002 klass);
1003 // Zero out the resolved type and make sure LookupResolvedType still finds it.
1004 dex_cache->ClearResolvedType(type_idx);
1005 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
1006 EXPECT_OBJ_PTR_EQ(
1007 class_linker_->LookupResolvedType(type_idx, dex_cache, class_loader.Get()),
1008 klass);
1009 }
1010
TEST_F(ClassLinkerTest,LookupResolvedTypeArray)1011 TEST_F(ClassLinkerTest, LookupResolvedTypeArray) {
1012 ScopedObjectAccess soa(Thread::Current());
1013 StackHandleScope<2> hs(soa.Self());
1014 Handle<mirror::ClassLoader> class_loader(
1015 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("AllFields"))));
1016 // Get the AllFields class for the dex cache and dex file.
1017 ObjPtr<mirror::Class> all_fields_klass
1018 = class_linker_->FindClass(soa.Self(), "LAllFields;", class_loader);
1019 ASSERT_TRUE(all_fields_klass != nullptr);
1020 Handle<mirror::DexCache> dex_cache = hs.NewHandle(all_fields_klass->GetDexCache());
1021 const DexFile& dex_file = *dex_cache->GetDexFile();
1022 // Get the index of the array class we want to test.
1023 const dex::TypeId* array_id = dex_file.FindTypeId("[Ljava/lang/Object;");
1024 ASSERT_TRUE(array_id != nullptr);
1025 dex::TypeIndex array_idx = dex_file.GetIndexForTypeId(*array_id);
1026 // Check that the array class wasn't resolved yet.
1027 EXPECT_TRUE(
1028 class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()) == nullptr);
1029 // Resolve the array class we want to test.
1030 ObjPtr<mirror::Class> array_klass
1031 = class_linker_->FindClass(soa.Self(), "[Ljava/lang/Object;", class_loader);
1032 ASSERT_TRUE(array_klass != nullptr);
1033 // Test that LookupResolvedType() finds the array class.
1034 EXPECT_OBJ_PTR_EQ(
1035 class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()),
1036 array_klass);
1037 // Zero out the resolved type and make sure LookupResolvedType() still finds it.
1038 dex_cache->ClearResolvedType(array_idx);
1039 EXPECT_TRUE(dex_cache->GetResolvedType(array_idx) == nullptr);
1040 EXPECT_OBJ_PTR_EQ(
1041 class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()),
1042 array_klass);
1043 }
1044
TEST_F(ClassLinkerTest,LookupResolvedTypeErroneousInit)1045 TEST_F(ClassLinkerTest, LookupResolvedTypeErroneousInit) {
1046 ScopedObjectAccess soa(Thread::Current());
1047 StackHandleScope<3> hs(soa.Self());
1048 Handle<mirror::ClassLoader> class_loader(
1049 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("ErroneousInit"))));
1050 AssertNonExistentClass("LErroneousInit;");
1051 Handle<mirror::Class> klass =
1052 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LErroneousInit;", class_loader));
1053 ASSERT_TRUE(klass != nullptr);
1054 dex::TypeIndex type_idx = klass->GetClassDef()->class_idx_;
1055 Handle<mirror::DexCache> dex_cache = hs.NewHandle(klass->GetDexCache());
1056 EXPECT_OBJ_PTR_EQ(
1057 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1058 klass.Get());
1059 // Zero out the resolved type and make sure LookupResolvedType still finds it.
1060 dex_cache->ClearResolvedType(type_idx);
1061 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
1062 EXPECT_OBJ_PTR_EQ(
1063 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1064 klass.Get());
1065 // Force initialization to turn the class erroneous.
1066 bool initialized = class_linker_->EnsureInitialized(soa.Self(),
1067 klass,
1068 /* can_init_fields= */ true,
1069 /* can_init_parents= */ true);
1070 EXPECT_FALSE(initialized);
1071 EXPECT_TRUE(soa.Self()->IsExceptionPending());
1072 soa.Self()->ClearException();
1073 // Check that the LookupResolvedType() can still find the resolved type.
1074 EXPECT_OBJ_PTR_EQ(
1075 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1076 klass.Get());
1077 // Zero out the resolved type and make sure LookupResolvedType() still finds it.
1078 dex_cache->ClearResolvedType(type_idx);
1079 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
1080 EXPECT_OBJ_PTR_EQ(
1081 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1082 klass.Get());
1083 }
1084
TEST_F(ClassLinkerTest,LibCore)1085 TEST_F(ClassLinkerTest, LibCore) {
1086 ScopedObjectAccess soa(Thread::Current());
1087 ASSERT_TRUE(java_lang_dex_file_ != nullptr);
1088 AssertDexFile(*java_lang_dex_file_, nullptr);
1089 }
1090
1091 // The first reference array element must be a multiple of 4 bytes from the
1092 // start of the object
TEST_F(ClassLinkerTest,ValidateObjectArrayElementsOffset)1093 TEST_F(ClassLinkerTest, ValidateObjectArrayElementsOffset) {
1094 ScopedObjectAccess soa(Thread::Current());
1095 ObjPtr<mirror::Class> array_class =
1096 class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
1097 ObjPtr<mirror::ObjectArray<mirror::String>> array =
1098 mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), array_class, 0);
1099 uintptr_t data_offset =
1100 reinterpret_cast<uintptr_t>(array->GetRawData(sizeof(mirror::HeapReference<mirror::String>),
1101 0));
1102 if (sizeof(mirror::HeapReference<mirror::String>) == sizeof(int32_t)) {
1103 EXPECT_TRUE(IsAligned<4>(data_offset)); // Check 4 byte alignment.
1104 } else {
1105 EXPECT_TRUE(IsAligned<8>(data_offset)); // Check 8 byte alignment.
1106 }
1107 }
1108
TEST_F(ClassLinkerTest,ValidatePrimitiveArrayElementsOffset)1109 TEST_F(ClassLinkerTest, ValidatePrimitiveArrayElementsOffset) {
1110 ScopedObjectAccess soa(Thread::Current());
1111 StackHandleScope<5> hs(soa.Self());
1112 Handle<mirror::LongArray> long_array(hs.NewHandle(mirror::LongArray::Alloc(soa.Self(), 0)));
1113 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[J"), long_array->GetClass());
1114 uintptr_t data_offset = reinterpret_cast<uintptr_t>(long_array->GetData());
1115 EXPECT_TRUE(IsAligned<8>(data_offset)); // Longs require 8 byte alignment
1116
1117 Handle<mirror::DoubleArray> double_array(hs.NewHandle(mirror::DoubleArray::Alloc(soa.Self(), 0)));
1118 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[D"), double_array->GetClass());
1119 data_offset = reinterpret_cast<uintptr_t>(double_array->GetData());
1120 EXPECT_TRUE(IsAligned<8>(data_offset)); // Doubles require 8 byte alignment
1121
1122 Handle<mirror::IntArray> int_array(hs.NewHandle(mirror::IntArray::Alloc(soa.Self(), 0)));
1123 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[I"), int_array->GetClass());
1124 data_offset = reinterpret_cast<uintptr_t>(int_array->GetData());
1125 EXPECT_TRUE(IsAligned<4>(data_offset)); // Ints require 4 byte alignment
1126
1127 Handle<mirror::CharArray> char_array(hs.NewHandle(mirror::CharArray::Alloc(soa.Self(), 0)));
1128 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[C"), char_array->GetClass());
1129 data_offset = reinterpret_cast<uintptr_t>(char_array->GetData());
1130 EXPECT_TRUE(IsAligned<2>(data_offset)); // Chars require 2 byte alignment
1131
1132 Handle<mirror::ShortArray> short_array(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 0)));
1133 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[S"), short_array->GetClass());
1134 data_offset = reinterpret_cast<uintptr_t>(short_array->GetData());
1135 EXPECT_TRUE(IsAligned<2>(data_offset)); // Shorts require 2 byte alignment
1136
1137 // Take it as given that bytes and booleans have byte alignment
1138 }
1139
TEST_F(ClassLinkerTest,ValidateBoxedTypes)1140 TEST_F(ClassLinkerTest, ValidateBoxedTypes) {
1141 // Validate that the "value" field is always the 0th field in each of java.lang's box classes.
1142 // This lets UnboxPrimitive avoid searching for the field by name at runtime.
1143 ScopedObjectAccess soa(Thread::Current());
1144 ScopedNullHandle<mirror::ClassLoader> class_loader;
1145 ObjPtr<mirror::Class> c;
1146 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Boolean;", class_loader);
1147 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1148 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Byte;", class_loader);
1149 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1150 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Character;", class_loader);
1151 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1152 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Double;", class_loader);
1153 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1154 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Float;", class_loader);
1155 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1156 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Integer;", class_loader);
1157 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1158 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Long;", class_loader);
1159 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1160 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Short;", class_loader);
1161 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1162 }
1163
TEST_F(ClassLinkerTest,TwoClassLoadersOneClass)1164 TEST_F(ClassLinkerTest, TwoClassLoadersOneClass) {
1165 ScopedObjectAccess soa(Thread::Current());
1166 StackHandleScope<3> hs(soa.Self());
1167 Handle<mirror::ClassLoader> class_loader_1(
1168 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
1169 Handle<mirror::ClassLoader> class_loader_2(
1170 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
1171 Handle<mirror::Class> MyClass_1 = hs.NewHandle(
1172 class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_1));
1173 ObjPtr<mirror::Class> MyClass_2 =
1174 class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_2);
1175 EXPECT_TRUE(MyClass_1 != nullptr);
1176 EXPECT_TRUE(MyClass_2 != nullptr);
1177 EXPECT_OBJ_PTR_NE(MyClass_1.Get(), MyClass_2);
1178 }
1179
TEST_F(ClassLinkerTest,StaticFields)1180 TEST_F(ClassLinkerTest, StaticFields) {
1181 ScopedObjectAccess soa(Thread::Current());
1182 StackHandleScope<2> hs(soa.Self());
1183 Handle<mirror::ClassLoader> class_loader(
1184 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1185 Handle<mirror::Class> statics(
1186 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
1187 class_linker_->EnsureInitialized(soa.Self(), statics, true, true);
1188
1189 // Static final primitives that are initialized by a compile-time constant
1190 // expression resolve to a copy of a constant value from the constant pool.
1191 // So <clinit> should be null.
1192 ArtMethod* clinit = statics->FindClassMethod("<clinit>", "()V", kRuntimePointerSize);
1193 EXPECT_TRUE(clinit == nullptr);
1194
1195 EXPECT_EQ(9U, statics->NumStaticFields());
1196
1197 ArtField* s0 = statics->FindStaticField("s0", "Z");
1198 EXPECT_EQ(s0->GetTypeAsPrimitiveType(), Primitive::kPrimBoolean);
1199 EXPECT_EQ(true, s0->GetBoolean(statics.Get()));
1200 s0->SetBoolean<false>(statics.Get(), false);
1201
1202 ArtField* s1 = statics->FindStaticField("s1", "B");
1203 EXPECT_EQ(s1->GetTypeAsPrimitiveType(), Primitive::kPrimByte);
1204 EXPECT_EQ(5, s1->GetByte(statics.Get()));
1205 s1->SetByte<false>(statics.Get(), 6);
1206
1207 ArtField* s2 = statics->FindStaticField("s2", "C");
1208 EXPECT_EQ(s2->GetTypeAsPrimitiveType(), Primitive::kPrimChar);
1209 EXPECT_EQ('a', s2->GetChar(statics.Get()));
1210 s2->SetChar<false>(statics.Get(), 'b');
1211
1212 ArtField* s3 = statics->FindStaticField("s3", "S");
1213 EXPECT_EQ(s3->GetTypeAsPrimitiveType(), Primitive::kPrimShort);
1214 EXPECT_EQ(-536, s3->GetShort(statics.Get()));
1215 s3->SetShort<false>(statics.Get(), -535);
1216
1217 ArtField* s4 = statics->FindStaticField("s4", "I");
1218 EXPECT_EQ(s4->GetTypeAsPrimitiveType(), Primitive::kPrimInt);
1219 EXPECT_EQ(2000000000, s4->GetInt(statics.Get()));
1220 s4->SetInt<false>(statics.Get(), 2000000001);
1221
1222 ArtField* s5 = statics->FindStaticField("s5", "J");
1223 EXPECT_EQ(s5->GetTypeAsPrimitiveType(), Primitive::kPrimLong);
1224 EXPECT_EQ(0x1234567890abcdefLL, s5->GetLong(statics.Get()));
1225 s5->SetLong<false>(statics.Get(), INT64_C(0x34567890abcdef12));
1226
1227 ArtField* s6 = statics->FindStaticField("s6", "F");
1228 EXPECT_EQ(s6->GetTypeAsPrimitiveType(), Primitive::kPrimFloat);
1229 EXPECT_DOUBLE_EQ(0.5, s6->GetFloat(statics.Get()));
1230 s6->SetFloat<false>(statics.Get(), 0.75);
1231
1232 ArtField* s7 = statics->FindStaticField("s7", "D");
1233 EXPECT_EQ(s7->GetTypeAsPrimitiveType(), Primitive::kPrimDouble);
1234 EXPECT_DOUBLE_EQ(16777217.0, s7->GetDouble(statics.Get()));
1235 s7->SetDouble<false>(statics.Get(), 16777219);
1236
1237 ArtField* s8 = statics->FindStaticField("s8", "Ljava/lang/String;");
1238 EXPECT_EQ(s8->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
1239 EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("android"));
1240 ObjPtr<mirror::String> str_value = mirror::String::AllocFromModifiedUtf8(soa.Self(), "robot");
1241 s8->SetObject<false>(s8->GetDeclaringClass(), str_value);
1242
1243 // TODO: Remove EXPECT_FALSE when GCC can handle EXPECT_EQ
1244 // http://code.google.com/p/googletest/issues/detail?id=322
1245 EXPECT_FALSE(s0->GetBoolean(statics.Get()));
1246 EXPECT_EQ(6, s1->GetByte(statics.Get()));
1247 EXPECT_EQ('b', s2->GetChar(statics.Get()));
1248 EXPECT_EQ(-535, s3->GetShort(statics.Get()));
1249 EXPECT_EQ(2000000001, s4->GetInt(statics.Get()));
1250 EXPECT_EQ(INT64_C(0x34567890abcdef12), s5->GetLong(statics.Get()));
1251 EXPECT_FLOAT_EQ(0.75, s6->GetFloat(statics.Get()));
1252 EXPECT_DOUBLE_EQ(16777219.0, s7->GetDouble(statics.Get()));
1253 EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("robot"));
1254 }
1255
TEST_F(ClassLinkerTest,Interfaces)1256 TEST_F(ClassLinkerTest, Interfaces) {
1257 ScopedObjectAccess soa(Thread::Current());
1258 StackHandleScope<6> hs(soa.Self());
1259 Handle<mirror::ClassLoader> class_loader(
1260 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Interfaces"))));
1261 Handle<mirror::Class> I(
1262 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
1263 Handle<mirror::Class> J(
1264 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
1265 Handle<mirror::Class> K(
1266 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$K;", class_loader)));
1267 Handle<mirror::Class> A(
1268 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$A;", class_loader)));
1269 Handle<mirror::Class> B(
1270 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$B;", class_loader)));
1271 EXPECT_TRUE(I->IsAssignableFrom(A.Get()));
1272 EXPECT_TRUE(J->IsAssignableFrom(A.Get()));
1273 EXPECT_TRUE(J->IsAssignableFrom(K.Get()));
1274 EXPECT_TRUE(K->IsAssignableFrom(B.Get()));
1275 EXPECT_TRUE(J->IsAssignableFrom(B.Get()));
1276
1277 const std::string_view void_sig("()V");
1278 ArtMethod* Ii = I->FindClassMethod("i", void_sig, kRuntimePointerSize);
1279 ArtMethod* Jj1 = J->FindClassMethod("j1", void_sig, kRuntimePointerSize);
1280 ArtMethod* Jj2 = J->FindClassMethod("j2", void_sig, kRuntimePointerSize);
1281 ArtMethod* Kj1 = K->FindInterfaceMethod("j1", void_sig, kRuntimePointerSize);
1282 ArtMethod* Kj2 = K->FindInterfaceMethod("j2", void_sig, kRuntimePointerSize);
1283 ArtMethod* Kk = K->FindInterfaceMethod("k", void_sig, kRuntimePointerSize);
1284 ArtMethod* Ai = A->FindClassMethod("i", void_sig, kRuntimePointerSize);
1285 ArtMethod* Aj1 = A->FindClassMethod("j1", void_sig, kRuntimePointerSize);
1286 ArtMethod* Aj2 = A->FindClassMethod("j2", void_sig, kRuntimePointerSize);
1287 ASSERT_TRUE(Ii != nullptr);
1288 ASSERT_FALSE(Ii->IsDirect());
1289 ASSERT_TRUE(Jj1 != nullptr);
1290 ASSERT_FALSE(Jj1->IsDirect());
1291 ASSERT_TRUE(Jj2 != nullptr);
1292 ASSERT_FALSE(Jj2->IsDirect());
1293 ASSERT_TRUE(Kj1 != nullptr);
1294 ASSERT_TRUE(Kj2 != nullptr);
1295 ASSERT_TRUE(Kk != nullptr);
1296 ASSERT_TRUE(Ai != nullptr);
1297 ASSERT_FALSE(Ai->IsDirect());
1298 ASSERT_TRUE(Aj1 != nullptr);
1299 ASSERT_FALSE(Aj1->IsDirect());
1300 ASSERT_TRUE(Aj2 != nullptr);
1301 ASSERT_FALSE(Aj2->IsDirect());
1302 EXPECT_NE(Ii, Ai);
1303 EXPECT_NE(Jj1, Aj1);
1304 EXPECT_NE(Jj2, Aj2);
1305 EXPECT_EQ(Kj1, Jj1);
1306 EXPECT_EQ(Kj2, Jj2);
1307 EXPECT_EQ(Ai, A->FindVirtualMethodForInterface(Ii, kRuntimePointerSize));
1308 EXPECT_EQ(Aj1, A->FindVirtualMethodForInterface(Jj1, kRuntimePointerSize));
1309 EXPECT_EQ(Aj2, A->FindVirtualMethodForInterface(Jj2, kRuntimePointerSize));
1310 EXPECT_EQ(Ai, A->FindVirtualMethodForVirtualOrInterface(Ii, kRuntimePointerSize));
1311 EXPECT_EQ(Aj1, A->FindVirtualMethodForVirtualOrInterface(Jj1, kRuntimePointerSize));
1312 EXPECT_EQ(Aj2, A->FindVirtualMethodForVirtualOrInterface(Jj2, kRuntimePointerSize));
1313
1314 ArtField* Afoo = A->FindStaticField("foo", "Ljava/lang/String;");
1315 ArtField* Bfoo = B->FindStaticField("foo", "Ljava/lang/String;");
1316 ArtField* Jfoo = J->FindStaticField("foo", "Ljava/lang/String;");
1317 ArtField* Kfoo = K->FindStaticField("foo", "Ljava/lang/String;");
1318 ASSERT_TRUE(Afoo != nullptr);
1319 EXPECT_EQ(Afoo, Bfoo);
1320 EXPECT_EQ(Afoo, Jfoo);
1321 EXPECT_EQ(Afoo, Kfoo);
1322 }
1323
TEST_F(ClassLinkerTest,ResolveVerifyAndClinit)1324 TEST_F(ClassLinkerTest, ResolveVerifyAndClinit) {
1325 // pretend we are trying to get the static storage for the StaticsFromCode class.
1326
1327 // case 1, get the uninitialized storage from StaticsFromCode.<clinit>
1328 // case 2, get the initialized storage from StaticsFromCode.getS0
1329
1330 ScopedObjectAccess soa(Thread::Current());
1331 jobject jclass_loader = LoadDex("StaticsFromCode");
1332 const DexFile* dex_file = GetFirstDexFile(jclass_loader);
1333 StackHandleScope<1> hs(soa.Self());
1334 Handle<mirror::ClassLoader> class_loader(
1335 hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
1336 ObjPtr<mirror::Class> klass =
1337 class_linker_->FindClass(soa.Self(), "LStaticsFromCode;", class_loader);
1338 ArtMethod* clinit = klass->FindClassInitializer(kRuntimePointerSize);
1339 ArtMethod* getS0 =
1340 klass->FindClassMethod("getS0", "()Ljava/lang/Object;", kRuntimePointerSize);
1341 ASSERT_TRUE(getS0 != nullptr);
1342 ASSERT_TRUE(getS0->IsStatic());
1343 const dex::TypeId* type_id = dex_file->FindTypeId("LStaticsFromCode;");
1344 ASSERT_TRUE(type_id != nullptr);
1345 dex::TypeIndex type_idx = dex_file->GetIndexForTypeId(*type_id);
1346 ObjPtr<mirror::Class> uninit = ResolveVerifyAndClinit(type_idx,
1347 clinit,
1348 soa.Self(),
1349 /* can_run_clinit= */ true,
1350 /* verify_access= */ false);
1351 EXPECT_TRUE(uninit != nullptr);
1352 EXPECT_FALSE(uninit->IsInitialized());
1353 ObjPtr<mirror::Class> init = ResolveVerifyAndClinit(type_idx,
1354 getS0,
1355 soa.Self(),
1356 /* can_run_clinit= */ true,
1357 /* verify_access= */ false);
1358 EXPECT_TRUE(init != nullptr);
1359 EXPECT_TRUE(init->IsInitialized());
1360 }
1361
TEST_F(ClassLinkerTest,ErroneousClass)1362 TEST_F(ClassLinkerTest, ErroneousClass) {
1363 ScopedObjectAccess soa(Thread::Current());
1364 jobject jclass_loader = LoadMultiDex("ErroneousA", "ErroneousB");
1365 StackHandleScope<1> hs(soa.Self());
1366 Handle<mirror::ClassLoader> class_loader(
1367 hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
1368 hs.Self()->AssertNoPendingException();
1369 const char* descriptor = "LErroneous;";
1370 ObjPtr<mirror::Class> klass = class_linker_->FindClass(soa.Self(), descriptor, class_loader);
1371 // Erronenous since we are extending final class.
1372 hs.Self()->AssertPendingException();
1373 EXPECT_TRUE(klass == nullptr);
1374 klass = class_linker_->LookupClass(soa.Self(), descriptor, class_loader.Get());
1375 EXPECT_FALSE(klass == nullptr);
1376 EXPECT_TRUE(klass->IsErroneous());
1377 EXPECT_TRUE(klass->GetIfTable() != nullptr);
1378 }
1379
TEST_F(ClassLinkerTest,FinalizableBit)1380 TEST_F(ClassLinkerTest, FinalizableBit) {
1381 ScopedObjectAccess soa(Thread::Current());
1382 ObjPtr<mirror::Class> c;
1383
1384 // Object has a finalize method, but we know it's empty.
1385 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1386 EXPECT_FALSE(c->IsFinalizable());
1387
1388 // Enum has a finalize method to prevent its subclasses from implementing one.
1389 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Enum;");
1390 EXPECT_FALSE(c->IsFinalizable());
1391
1392 // RoundingMode is an enum.
1393 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/math/RoundingMode;");
1394 EXPECT_FALSE(c->IsFinalizable());
1395
1396 // RandomAccessFile extends Object and overrides finalize.
1397 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/RandomAccessFile;");
1398 EXPECT_TRUE(c->IsFinalizable());
1399
1400 // FileInputStream is finalizable and extends InputStream which isn't.
1401 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/InputStream;");
1402 EXPECT_FALSE(c->IsFinalizable());
1403 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/FileInputStream;");
1404 EXPECT_TRUE(c->IsFinalizable());
1405
1406 // ScheduledThreadPoolExecutor doesn't have a finalize method but
1407 // extends ThreadPoolExecutor which does.
1408 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ThreadPoolExecutor;");
1409 EXPECT_TRUE(c->IsFinalizable());
1410 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ScheduledThreadPoolExecutor;");
1411 EXPECT_TRUE(c->IsFinalizable());
1412 }
1413
TEST_F(ClassLinkerTest,ClassRootDescriptors)1414 TEST_F(ClassLinkerTest, ClassRootDescriptors) {
1415 ScopedObjectAccess soa(Thread::Current());
1416 std::string temp;
1417 for (size_t i = 0; i < static_cast<size_t>(ClassRoot::kMax); i++) {
1418 ObjPtr<mirror::Class> klass = GetClassRoot(ClassRoot(i), class_linker_);
1419 EXPECT_GT(strlen(klass->GetDescriptor(&temp)), 0U);
1420 EXPECT_STREQ(klass->GetDescriptor(&temp), GetClassRootDescriptor(ClassRoot(i))) << " i = " << i;
1421 }
1422 }
1423
TEST_F(ClassLinkerTest,ValidatePredefinedClassSizes)1424 TEST_F(ClassLinkerTest, ValidatePredefinedClassSizes) {
1425 ScopedObjectAccess soa(Thread::Current());
1426 ScopedNullHandle<mirror::ClassLoader> class_loader;
1427 ObjPtr<mirror::Class> c;
1428
1429 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Class;", class_loader);
1430 ASSERT_TRUE(c != nullptr);
1431 EXPECT_EQ(c->GetClassSize(), mirror::Class::ClassClassSize(kRuntimePointerSize));
1432
1433 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Object;", class_loader);
1434 ASSERT_TRUE(c != nullptr);
1435 EXPECT_EQ(c->GetClassSize(), mirror::Object::ClassSize(kRuntimePointerSize));
1436
1437 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/String;", class_loader);
1438 ASSERT_TRUE(c != nullptr);
1439 EXPECT_EQ(c->GetClassSize(), mirror::String::ClassSize(kRuntimePointerSize));
1440
1441 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/DexCache;", class_loader);
1442 ASSERT_TRUE(c != nullptr);
1443 EXPECT_EQ(c->GetClassSize(), mirror::DexCache::ClassSize(kRuntimePointerSize));
1444 }
1445
CheckMethod(ArtMethod * method,bool verified)1446 static void CheckMethod(ArtMethod* method, bool verified)
1447 REQUIRES_SHARED(Locks::mutator_lock_) {
1448 if (!method->IsNative() && !method->IsAbstract()) {
1449 EXPECT_EQ((method->GetAccessFlags() & kAccSkipAccessChecks) != 0U, verified)
1450 << method->PrettyMethod(true);
1451 }
1452 }
1453
CheckVerificationAttempted(ObjPtr<mirror::Class> c,bool preverified)1454 static void CheckVerificationAttempted(ObjPtr<mirror::Class> c, bool preverified)
1455 REQUIRES_SHARED(Locks::mutator_lock_) {
1456 for (auto& m : c->GetMethods(kRuntimePointerSize)) {
1457 CheckMethod(&m, preverified);
1458 }
1459 }
1460
TEST_F(ClassLinkerTest,Preverified_InitializedBoot)1461 TEST_F(ClassLinkerTest, Preverified_InitializedBoot) {
1462 ScopedObjectAccess soa(Thread::Current());
1463
1464 ObjPtr<mirror::Class> JavaLangObject =
1465 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1466 ASSERT_TRUE(JavaLangObject != nullptr);
1467 EXPECT_TRUE(JavaLangObject->IsInitialized()) << "Not testing already initialized class from the "
1468 "core";
1469 CheckVerificationAttempted(JavaLangObject, true);
1470 }
1471
TEST_F(ClassLinkerTest,Preverified_UninitializedBoot)1472 TEST_F(ClassLinkerTest, Preverified_UninitializedBoot) {
1473 ScopedObjectAccess soa(Thread::Current());
1474
1475 StackHandleScope<1> hs(soa.Self());
1476
1477 Handle<mirror::Class> security_manager(hs.NewHandle(class_linker_->FindSystemClass(
1478 soa.Self(), "Ljava/lang/SecurityManager;")));
1479 EXPECT_FALSE(security_manager->IsInitialized()) << "Not testing uninitialized class from the "
1480 "core";
1481
1482 CheckVerificationAttempted(security_manager.Get(), false);
1483
1484 class_linker_->EnsureInitialized(soa.Self(), security_manager, true, true);
1485 CheckVerificationAttempted(security_manager.Get(), true);
1486 }
1487
TEST_F(ClassLinkerTest,Preverified_App)1488 TEST_F(ClassLinkerTest, Preverified_App) {
1489 ScopedObjectAccess soa(Thread::Current());
1490
1491 StackHandleScope<2> hs(soa.Self());
1492 Handle<mirror::ClassLoader> class_loader(
1493 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1494 Handle<mirror::Class> statics(
1495 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
1496
1497 CheckVerificationAttempted(statics.Get(), false);
1498
1499 class_linker_->EnsureInitialized(soa.Self(), statics, true, true);
1500 CheckVerificationAttempted(statics.Get(), true);
1501 }
1502
TEST_F(ClassLinkerTest,IsBootStrapClassLoaded)1503 TEST_F(ClassLinkerTest, IsBootStrapClassLoaded) {
1504 ScopedObjectAccess soa(Thread::Current());
1505
1506 StackHandleScope<3> hs(soa.Self());
1507 Handle<mirror::ClassLoader> class_loader(
1508 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1509
1510 // java.lang.Object is a bootstrap class.
1511 Handle<mirror::Class> jlo_class(
1512 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;")));
1513 ASSERT_TRUE(jlo_class != nullptr);
1514 EXPECT_TRUE(jlo_class->IsBootStrapClassLoaded());
1515
1516 // Statics is not a bootstrap class.
1517 Handle<mirror::Class> statics(
1518 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
1519 ASSERT_TRUE(statics != nullptr);
1520 EXPECT_FALSE(statics->IsBootStrapClassLoaded());
1521 }
1522
1523 // Regression test for b/26799552.
TEST_F(ClassLinkerTest,RegisterDexFileName)1524 TEST_F(ClassLinkerTest, RegisterDexFileName) {
1525 ScopedObjectAccess soa(Thread::Current());
1526 StackHandleScope<2> hs(soa.Self());
1527 ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
1528 MutableHandle<mirror::DexCache> dex_cache(hs.NewHandle<mirror::DexCache>(nullptr));
1529 {
1530 ReaderMutexLock mu(soa.Self(), *Locks::dex_lock_);
1531 for (const auto& entry : class_linker->GetDexCachesData()) {
1532 const ClassLinker::DexCacheData& data = entry.second;
1533 dex_cache.Assign(soa.Self()->DecodeJObject(data.weak_root)->AsDexCache());
1534 if (dex_cache != nullptr) {
1535 break;
1536 }
1537 }
1538 ASSERT_TRUE(dex_cache != nullptr);
1539 }
1540 const uint16_t data[] = { 0x20AC, 0x20A1 };
1541 Handle<mirror::String> location(hs.NewHandle(mirror::String::AllocFromUtf16(soa.Self(),
1542 arraysize(data),
1543 data)));
1544 const DexFile* old_dex_file = dex_cache->GetDexFile();
1545
1546 auto container =
1547 std::make_shared<MemoryDexFileContainer>(old_dex_file->Begin(), old_dex_file->Size());
1548 std::unique_ptr<DexFile> dex_file(new StandardDexFile(old_dex_file->Begin(),
1549 old_dex_file->Size(),
1550 location->ToModifiedUtf8(),
1551 0u,
1552 nullptr,
1553 std::move(container)));
1554 // Make a copy of the dex cache with changed name.
1555 dex_cache.Assign(class_linker->AllocAndInitializeDexCache(Thread::Current(),
1556 *dex_file,
1557 /* class_loader= */ nullptr));
1558 DCHECK_EQ(dex_cache->GetLocation()->CompareTo(location.Get()), 0);
1559 {
1560 WriterMutexLock mu(soa.Self(), *Locks::dex_lock_);
1561 // Check that inserting with a UTF16 name works.
1562 class_linker->RegisterDexFileLocked(*dex_file, dex_cache.Get(), /* class_loader= */ nullptr);
1563 }
1564 }
1565
TEST_F(ClassLinkerMethodHandlesTest,TestResolveMethodTypes)1566 TEST_F(ClassLinkerMethodHandlesTest, TestResolveMethodTypes) {
1567 ScopedObjectAccess soa(Thread::Current());
1568 StackHandleScope<7> hs(soa.Self());
1569
1570 Handle<mirror::ClassLoader> class_loader(
1571 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MethodTypes"))));
1572 Handle<mirror::Class> method_types(
1573 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LMethodTypes;", class_loader)));
1574 class_linker_->EnsureInitialized(soa.Self(), method_types, true, true);
1575
1576 ArtMethod* method1 = method_types->FindClassMethod(
1577 "method1",
1578 "(Ljava/lang/String;)Ljava/lang/String;",
1579 kRuntimePointerSize);
1580 ASSERT_TRUE(method1 != nullptr);
1581 ASSERT_FALSE(method1->IsDirect());
1582
1583 const DexFile& dex_file = *(method1->GetDexFile());
1584 Handle<mirror::DexCache> dex_cache = hs.NewHandle(
1585 class_linker_->FindDexCache(soa.Self(), dex_file));
1586
1587 const dex::MethodId& method1_id = dex_file.GetMethodId(method1->GetDexMethodIndex());
1588
1589 // This is the MethodType corresponding to the prototype of
1590 // String MethodTypes# method1(String).
1591 // Its RType = Ljava/lang/String;
1592 // Its PTypes = { Ljava/lang/String; }
1593 Handle<mirror::MethodType> method1_type = hs.NewHandle(
1594 class_linker_->ResolveMethodType(soa.Self(), method1_id.proto_idx_, dex_cache, class_loader));
1595
1596 // Assert that the method type was resolved successfully.
1597 ASSERT_TRUE(method1_type != nullptr);
1598
1599 // Assert that the return type and the method arguments are as we expect.
1600 Handle<mirror::Class> string_class(hs.NewHandle(class_linker_->FindClass(soa.Self(),
1601 "Ljava/lang/String;",
1602 class_loader)));
1603 ASSERT_OBJ_PTR_EQ(string_class.Get(), method1_type->GetRType());
1604 ASSERT_OBJ_PTR_EQ(string_class.Get(), method1_type->GetPTypes()->Get(0));
1605
1606 // Resolve the method type again and assert that we get back the same value.
1607 Handle<mirror::MethodType> method1_type2 = hs.NewHandle(
1608 class_linker_->ResolveMethodType(soa.Self(), method1_id.proto_idx_, dex_cache, class_loader));
1609 ASSERT_OBJ_PTR_EQ(method1_type.Get(), method1_type2.Get());
1610
1611 // Resolve the MethodType associated with a different method signature
1612 // and assert it's different.
1613 ArtMethod* method2 = method_types->FindClassMethod(
1614 "method2",
1615 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
1616 kRuntimePointerSize);
1617 ASSERT_TRUE(method2 != nullptr);
1618 ASSERT_FALSE(method2->IsDirect());
1619 const dex::MethodId& method2_id = dex_file.GetMethodId(method2->GetDexMethodIndex());
1620 Handle<mirror::MethodType> method2_type = hs.NewHandle(
1621 class_linker_->ResolveMethodType(soa.Self(), method2_id.proto_idx_, dex_cache, class_loader));
1622 ASSERT_OBJ_PTR_NE(method1_type.Get(), method2_type.Get());
1623 }
1624
1625 // Verify that ClassLinker's CreateWellknownClassLoader works as expected
1626 // by creating a chain of class loaders with various dex files.
TEST_F(ClassLinkerTest,CreateWellKnownClassLoader)1627 TEST_F(ClassLinkerTest, CreateWellKnownClassLoader) {
1628 // LoadDexIn*ClassLoader methods already assert that the parent loader is the expected one.
1629 // No need to check again.
1630 jobject class_loader_a = LoadDexInPathClassLoader("MyClass", nullptr);
1631 jobject class_loader_b = LoadDexInDelegateLastClassLoader("Nested", class_loader_a);
1632 jobject class_loader_c = LoadDexInPathClassLoader("MultiDex", class_loader_b);
1633 LoadDexInDelegateLastClassLoader("Interfaces", class_loader_c);
1634 }
1635
TEST_F(ClassLinkerTest,PrettyClass)1636 TEST_F(ClassLinkerTest, PrettyClass) {
1637 ScopedObjectAccess soa(Thread::Current());
1638 EXPECT_EQ("null", mirror::Class::PrettyClass(nullptr));
1639 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
1640 ASSERT_TRUE(c != nullptr);
1641 ObjPtr<mirror::Object> o = mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), c, 0);
1642 EXPECT_EQ("java.lang.Class<java.lang.String[]>", mirror::Class::PrettyClass(o->GetClass()));
1643 }
1644
TEST_F(ClassLinkerTest,PrettyClassAndClassLoader)1645 TEST_F(ClassLinkerTest, PrettyClassAndClassLoader) {
1646 ScopedObjectAccess soa(Thread::Current());
1647 EXPECT_EQ("null", mirror::Class::PrettyClassAndClassLoader(nullptr));
1648 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
1649 ASSERT_TRUE(c != nullptr);
1650 ObjPtr<mirror::Object> o = mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), c, 0);
1651 EXPECT_EQ("java.lang.Class<java.lang.String[],null>",
1652 mirror::Class::PrettyClassAndClassLoader(o->GetClass()));
1653 }
1654
TEST_F(ClassLinkerTest,PrettyField)1655 TEST_F(ClassLinkerTest, PrettyField) {
1656 ScopedObjectAccess soa(Thread::Current());
1657 EXPECT_EQ("null", ArtField::PrettyField(nullptr));
1658
1659 ObjPtr<mirror::Class> java_lang_String = class_linker_->FindSystemClass(soa.Self(),
1660 "Ljava/lang/String;");
1661
1662 ArtField* f;
1663 f = java_lang_String->FindDeclaredInstanceField("count", "I");
1664 EXPECT_EQ("int java.lang.String.count", f->PrettyField());
1665 EXPECT_EQ("java.lang.String.count", f->PrettyField(false));
1666 }
1667
TEST_F(ClassLinkerTest,JniShortName_JniLongName)1668 TEST_F(ClassLinkerTest, JniShortName_JniLongName) {
1669 ScopedObjectAccess soa(Thread::Current());
1670 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/String;");
1671 ASSERT_TRUE(c != nullptr);
1672 ArtMethod* m;
1673
1674 m = c->FindClassMethod("charAt", "(I)C", kRuntimePointerSize);
1675 ASSERT_TRUE(m != nullptr);
1676 ASSERT_FALSE(m->IsDirect());
1677 EXPECT_EQ("Java_java_lang_String_charAt", m->JniShortName());
1678 EXPECT_EQ("Java_java_lang_String_charAt__I", m->JniLongName());
1679
1680 m = c->FindClassMethod("indexOf", "(Ljava/lang/String;I)I", kRuntimePointerSize);
1681 ASSERT_TRUE(m != nullptr);
1682 ASSERT_FALSE(m->IsDirect());
1683 EXPECT_EQ("Java_java_lang_String_indexOf", m->JniShortName());
1684 EXPECT_EQ("Java_java_lang_String_indexOf__Ljava_lang_String_2I", m->JniLongName());
1685
1686 m = c->FindClassMethod("copyValueOf", "([CII)Ljava/lang/String;", kRuntimePointerSize);
1687 ASSERT_TRUE(m != nullptr);
1688 ASSERT_TRUE(m->IsStatic());
1689 EXPECT_EQ("Java_java_lang_String_copyValueOf", m->JniShortName());
1690 EXPECT_EQ("Java_java_lang_String_copyValueOf___3CII", m->JniLongName());
1691 }
1692
1693 class ClassLinkerClassLoaderTest : public ClassLinkerTest {
1694 protected:
1695 // Verifies that the class identified by the given descriptor is loaded with
1696 // the expected_class_loader_obj when search from class_loader_to_search_obj.
1697 // When expected_class_loader_obj is null the check will be done against BootClassLoader.
VerifyClassResolution(const std::string & descriptor,jobject class_loader_to_search_obj,jobject expected_class_loader_obj,bool should_find=true)1698 void VerifyClassResolution(const std::string& descriptor,
1699 jobject class_loader_to_search_obj,
1700 jobject expected_class_loader_obj,
1701 bool should_find = true) {
1702 Thread* self = Thread::Current();
1703 ScopedObjectAccess soa(self);
1704 StackHandleScope<3> hs(self);
1705 Handle<mirror::ClassLoader> class_loader_to_search(
1706 hs.NewHandle(soa.Decode<mirror::ClassLoader>(class_loader_to_search_obj)));
1707
1708 Handle<mirror::Class> klass = hs.NewHandle(
1709 class_linker_->FindClass(soa.Self(), descriptor.c_str(), class_loader_to_search));
1710
1711 if (!should_find) {
1712 if (self->IsExceptionPending()) {
1713 self->ClearException();
1714 }
1715 ASSERT_TRUE(klass == nullptr);
1716 } else if (expected_class_loader_obj == nullptr) {
1717 ASSERT_TRUE(ClassLinker::IsBootClassLoader(klass->GetClassLoader()));
1718 } else {
1719 ASSERT_TRUE(klass != nullptr) << descriptor;
1720 Handle<mirror::ClassLoader> expected_class_loader(
1721 hs.NewHandle(soa.Decode<mirror::ClassLoader>(expected_class_loader_obj)));
1722 ASSERT_OBJ_PTR_EQ(klass->GetClassLoader(), expected_class_loader.Get());
1723 }
1724 }
1725 };
1726
TEST_F(ClassLinkerClassLoaderTest,CreatePathClassLoader)1727 TEST_F(ClassLinkerClassLoaderTest, CreatePathClassLoader) {
1728 jobject class_loader_a = LoadDexInPathClassLoader("ForClassLoaderA", nullptr);
1729 VerifyClassResolution("LDefinedInA;", class_loader_a, class_loader_a);
1730 VerifyClassResolution("Ljava/lang/String;", class_loader_a, nullptr);
1731 VerifyClassResolution("LDefinedInB;", class_loader_a, nullptr, /*should_find=*/ false);
1732 }
1733
TEST_F(ClassLinkerClassLoaderTest,CreateDelegateLastClassLoader)1734 TEST_F(ClassLinkerClassLoaderTest, CreateDelegateLastClassLoader) {
1735 jobject class_loader_a = LoadDexInDelegateLastClassLoader("ForClassLoaderA", nullptr);
1736 VerifyClassResolution("LDefinedInA;", class_loader_a, class_loader_a);
1737 VerifyClassResolution("Ljava/lang/String;", class_loader_a, nullptr);
1738 VerifyClassResolution("LDefinedInB;", class_loader_a, nullptr, /*should_find=*/ false);
1739 }
1740
TEST_F(ClassLinkerClassLoaderTest,CreateClassLoaderChain)1741 TEST_F(ClassLinkerClassLoaderTest, CreateClassLoaderChain) {
1742 // The chain is
1743 // ClassLoaderA (PathClassLoader, defines: A, AB, AC, AD)
1744 // ^
1745 // |
1746 // ClassLoaderB (DelegateLastClassLoader, defines: B, AB, BC, BD)
1747 // ^
1748 // |
1749 // ClassLoaderC (PathClassLoader, defines: C, AC, BC, CD)
1750 // ^
1751 // |
1752 // ClassLoaderD (DelegateLastClassLoader, defines: D, AD, BD, CD)
1753
1754 jobject class_loader_a = LoadDexInPathClassLoader("ForClassLoaderA", nullptr);
1755 jobject class_loader_b = LoadDexInDelegateLastClassLoader("ForClassLoaderB", class_loader_a);
1756 jobject class_loader_c = LoadDexInPathClassLoader("ForClassLoaderC", class_loader_b);
1757 jobject class_loader_d = LoadDexInDelegateLastClassLoader("ForClassLoaderD", class_loader_c);
1758
1759 // Verify exclusive classes (present in only one class loader).
1760 VerifyClassResolution("LDefinedInD;", class_loader_d, class_loader_d);
1761 VerifyClassResolution("LDefinedInC;", class_loader_d, class_loader_c);
1762 VerifyClassResolution("LDefinedInB;", class_loader_d, class_loader_b);
1763 VerifyClassResolution("LDefinedInA;", class_loader_d, class_loader_a);
1764
1765 // Verify classes that are defined in multiple classloader.
1766
1767 // Classes defined in B should be found in B even if they are defined in A or C because
1768 // B is a DelegateLastClassLoader.
1769 VerifyClassResolution("LDefinedInAB;", class_loader_d, class_loader_b);
1770 VerifyClassResolution("LDefinedInABC;", class_loader_d, class_loader_b);
1771 VerifyClassResolution("LDefinedInBC;", class_loader_d, class_loader_b);
1772
1773 // Classes defined in D should be found in D even if they are defined in parent class loaders
1774 // as well because D is a DelegateLastClassLoader.
1775 VerifyClassResolution("LDefinedInAD;", class_loader_d, class_loader_d);
1776 VerifyClassResolution("LDefinedInBD;", class_loader_d, class_loader_d);
1777 VerifyClassResolution("LDefinedInCD;", class_loader_d, class_loader_d);
1778
1779
1780 // Classes not defined in the DelegateLastClassLoaders (i.e. D or B) should be found
1781 // in the top parent.
1782 VerifyClassResolution("LDefinedInAC;", class_loader_d, class_loader_a);
1783
1784 // Check that we don't find an undefined class.
1785 VerifyClassResolution("LNotDefined;", class_loader_d, nullptr, /*should_find=*/ false);
1786 }
1787
1788 } // namespace art
1789