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/pointer_size.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 HIDDEN {
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->NumFields());
114 EXPECT_EQ(0U, primitive->NumDirectInterfaces());
115 EXPECT_FALSE(primitive->HasVTable());
116 EXPECT_EQ(0, primitive->GetIfTableCount());
117 EXPECT_TRUE(primitive->GetIfTable() != nullptr);
118 EXPECT_EQ(primitive->GetIfTable()->Count(), 0u);
119 EXPECT_EQ(kAccPublic | kAccFinal | kAccAbstract, primitive->GetAccessFlags());
120 }
121
AssertObjectClass(ObjPtr<mirror::Class> JavaLangObject)122 void AssertObjectClass(ObjPtr<mirror::Class> JavaLangObject)
123 REQUIRES_SHARED(Locks::mutator_lock_) {
124 ASSERT_TRUE(JavaLangObject != nullptr);
125 ASSERT_TRUE(JavaLangObject->GetClass() != nullptr);
126 ASSERT_OBJ_PTR_EQ(JavaLangObject->GetClass(), JavaLangObject->GetClass()->GetClass());
127 EXPECT_OBJ_PTR_EQ(JavaLangObject, JavaLangObject->GetClass()->GetSuperClass());
128 std::string temp;
129 ASSERT_STREQ(JavaLangObject->GetDescriptor(&temp), "Ljava/lang/Object;");
130 EXPECT_TRUE(JavaLangObject->GetSuperClass() == nullptr);
131 EXPECT_FALSE(JavaLangObject->HasSuperClass());
132 EXPECT_TRUE(JavaLangObject->GetClassLoader() == nullptr);
133 {
134 Thread* self = Thread::Current();
135 StackHandleScope<1> hs(self);
136 HandleWrapperObjPtr<mirror::Class> h(hs.NewHandleWrapper(&JavaLangObject));
137 ScopedThreadSuspension sts(self, ThreadState::kNative);
138 class_linker_->MakeInitializedClassesVisiblyInitialized(self, /*wait=*/ true);
139 // HandleWrapperObjPtr restores JavaLangObject here after becoming runnable again.
140 }
141 EXPECT_EQ(ClassStatus::kVisiblyInitialized, JavaLangObject->GetStatus());
142 EXPECT_FALSE(JavaLangObject->IsErroneous());
143 EXPECT_TRUE(JavaLangObject->IsLoaded());
144 EXPECT_TRUE(JavaLangObject->IsResolved());
145 EXPECT_FALSE(JavaLangObject->IsErroneousResolved());
146 EXPECT_TRUE(JavaLangObject->IsVerified());
147 EXPECT_TRUE(JavaLangObject->IsInitialized());
148 EXPECT_FALSE(JavaLangObject->IsArrayInstance());
149 EXPECT_FALSE(JavaLangObject->IsArrayClass());
150 EXPECT_TRUE(JavaLangObject->GetComponentType() == nullptr);
151 EXPECT_FALSE(JavaLangObject->IsInterface());
152 EXPECT_TRUE(JavaLangObject->IsPublic());
153 EXPECT_FALSE(JavaLangObject->IsFinal());
154 EXPECT_FALSE(JavaLangObject->IsPrimitive());
155 EXPECT_FALSE(JavaLangObject->IsSynthetic());
156 EXPECT_EQ(4U, JavaLangObject->NumDirectMethods());
157 EXPECT_EQ(11U, JavaLangObject->NumVirtualMethods());
158 EXPECT_EQ(2U, JavaLangObject->NumFields());
159 EXPECT_STREQ(JavaLangObject->GetField(0)->GetName(), "shadow$_klass_");
160 EXPECT_FALSE(JavaLangObject->GetField(0)->IsStatic());
161 EXPECT_STREQ(JavaLangObject->GetField(1)->GetName(), "shadow$_monitor_");
162 EXPECT_FALSE(JavaLangObject->GetField(1)->IsStatic());
163
164 EXPECT_EQ(0U, JavaLangObject->NumDirectInterfaces());
165
166 PointerSize pointer_size = class_linker_->GetImagePointerSize();
167 ArtMethod* unimplemented = runtime_->GetImtUnimplementedMethod();
168 ImTable* imt = JavaLangObject->GetImt(pointer_size);
169 ASSERT_NE(nullptr, imt);
170 for (size_t i = 0; i < ImTable::kSize; ++i) {
171 ASSERT_EQ(unimplemented, imt->Get(i, pointer_size));
172 }
173 }
174
AssertArrayClass(const std::string & array_descriptor,const std::string & component_type,ObjPtr<mirror::ClassLoader> class_loader)175 void AssertArrayClass(const std::string& array_descriptor,
176 const std::string& component_type,
177 ObjPtr<mirror::ClassLoader> class_loader)
178 REQUIRES_SHARED(Locks::mutator_lock_) {
179 Thread* self = Thread::Current();
180 StackHandleScope<2> hs(self);
181 Handle<mirror::ClassLoader> loader(hs.NewHandle(class_loader));
182 Handle<mirror::Class> array = hs.NewHandle(FindClass(array_descriptor.c_str(), loader));
183 std::string temp;
184 EXPECT_STREQ(component_type.c_str(), array->GetComponentType()->GetDescriptor(&temp));
185 EXPECT_OBJ_PTR_EQ(loader.Get(), array->GetClassLoader());
186 EXPECT_EQ(kAccFinal | kAccAbstract, (array->GetAccessFlags() & (kAccFinal | kAccAbstract)));
187 AssertArrayClass(array_descriptor, array);
188 }
189
AssertArrayClass(const std::string & array_descriptor,Handle<mirror::Class> array)190 void AssertArrayClass(const std::string& array_descriptor, Handle<mirror::Class> array)
191 REQUIRES_SHARED(Locks::mutator_lock_) {
192 ASSERT_TRUE(array != nullptr);
193 ASSERT_TRUE(array->GetClass() != nullptr);
194 ASSERT_OBJ_PTR_EQ(array->GetClass(), array->GetClass()->GetClass());
195 EXPECT_TRUE(array->GetClass()->GetSuperClass() != nullptr);
196 std::string temp;
197 ASSERT_STREQ(array_descriptor.c_str(), array->GetDescriptor(&temp));
198 EXPECT_TRUE(array->GetSuperClass() != nullptr);
199 Thread* self = Thread::Current();
200 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(self, "Ljava/lang/Object;"),
201 array->GetSuperClass());
202 EXPECT_TRUE(array->HasSuperClass());
203 ASSERT_TRUE(array->GetComponentType() != nullptr);
204 ASSERT_GT(strlen(array->GetComponentType()->GetDescriptor(&temp)), 0U);
205 EXPECT_EQ(ClassStatus::kVisiblyInitialized, array->GetStatus());
206 EXPECT_FALSE(array->IsErroneous());
207 EXPECT_TRUE(array->IsLoaded());
208 EXPECT_TRUE(array->IsResolved());
209 EXPECT_FALSE(array->IsErroneousResolved());
210 EXPECT_TRUE(array->IsVerified());
211 EXPECT_TRUE(array->IsInitialized());
212 EXPECT_FALSE(array->IsArrayInstance());
213 EXPECT_TRUE(array->IsArrayClass());
214 EXPECT_FALSE(array->IsInterface());
215 EXPECT_EQ(array->GetComponentType()->IsPublic(), array->IsPublic());
216 EXPECT_TRUE(array->IsFinal());
217 EXPECT_FALSE(array->IsPrimitive());
218 EXPECT_FALSE(array->IsSynthetic());
219 EXPECT_EQ(0U, array->NumDirectMethods());
220 EXPECT_EQ(0U, array->NumVirtualMethods());
221 EXPECT_EQ(0U, array->NumFields());
222 EXPECT_EQ(2U, array->NumDirectInterfaces());
223 EXPECT_TRUE(array->ShouldHaveImt());
224 EXPECT_TRUE(array->ShouldHaveEmbeddedVTable());
225 EXPECT_EQ(2, array->GetIfTableCount());
226 ASSERT_TRUE(array->GetIfTable() != nullptr);
227 ObjPtr<mirror::Class> direct_interface0 = array->GetDirectInterface(0);
228 EXPECT_TRUE(direct_interface0 != nullptr);
229 EXPECT_STREQ(direct_interface0->GetDescriptor(&temp), "Ljava/lang/Cloneable;");
230 ObjPtr<mirror::Class> direct_interface1 = array->GetDirectInterface(1);
231 EXPECT_STREQ(direct_interface1->GetDescriptor(&temp), "Ljava/io/Serializable;");
232 EXPECT_OBJ_PTR_EQ(class_linker_->FindArrayClass(self, array->GetComponentType()), array.Get());
233
234 PointerSize pointer_size = class_linker_->GetImagePointerSize();
235 ObjPtr<mirror::Class> JavaLangObject =
236 class_linker_->FindSystemClass(self, "Ljava/lang/Object;");
237 ImTable* JavaLangObject_imt = JavaLangObject->GetImt(pointer_size);
238 // IMT of a array class should be shared with the IMT of the java.lag.Object
239 ASSERT_EQ(JavaLangObject_imt, array->GetImt(pointer_size));
240 }
241
AssertMethod(ArtMethod * method)242 void AssertMethod(ArtMethod* method) REQUIRES_SHARED(Locks::mutator_lock_) {
243 EXPECT_TRUE(method != nullptr);
244 EXPECT_TRUE(method->GetDeclaringClass() != nullptr);
245 EXPECT_TRUE(method->GetName() != nullptr);
246 EXPECT_TRUE(method->GetSignature() != Signature::NoSignature());
247 }
248
AssertField(ObjPtr<mirror::Class> klass,ArtField * field)249 void AssertField(ObjPtr<mirror::Class> klass, ArtField* field)
250 REQUIRES_SHARED(Locks::mutator_lock_) {
251 EXPECT_TRUE(field != nullptr);
252 EXPECT_OBJ_PTR_EQ(klass, field->GetDeclaringClass());
253 EXPECT_TRUE(field->GetName() != nullptr);
254 EXPECT_TRUE(field->ResolveType() != nullptr);
255 }
256
AssertClass(const std::string & descriptor,Handle<mirror::Class> klass)257 void AssertClass(const std::string& descriptor, Handle<mirror::Class> klass)
258 REQUIRES_SHARED(Locks::mutator_lock_) {
259 std::string temp;
260 EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor(&temp));
261 if (descriptor == "Ljava/lang/Object;") {
262 EXPECT_FALSE(klass->HasSuperClass());
263 } else {
264 EXPECT_TRUE(klass->HasSuperClass());
265 EXPECT_TRUE(klass->GetSuperClass() != nullptr);
266 }
267 EXPECT_TRUE(klass->GetClass() != nullptr);
268 EXPECT_OBJ_PTR_EQ(klass->GetClass(), klass->GetClass()->GetClass());
269 EXPECT_TRUE(klass->GetDexCache() != nullptr);
270 EXPECT_TRUE(klass->IsLoaded());
271 EXPECT_TRUE(klass->IsResolved());
272 EXPECT_FALSE(klass->IsErroneousResolved());
273 EXPECT_FALSE(klass->IsErroneous());
274 EXPECT_FALSE(klass->IsArrayClass());
275 EXPECT_TRUE(klass->GetComponentType() == nullptr);
276 EXPECT_TRUE(klass->IsInSamePackage(klass.Get()));
277 std::string temp2;
278 EXPECT_TRUE(mirror::Class::IsInSamePackage(klass->GetDescriptor(&temp),
279 klass->GetDescriptor(&temp2)));
280 if (klass->IsInterface()) {
281 EXPECT_TRUE(klass->IsAbstract());
282 // Check that all methods are direct and either static (<clinit> or a regular static method),
283 // or private.
284 for (ArtMethod& m : klass->GetDirectMethods(kRuntimePointerSize)) {
285 EXPECT_TRUE(m.IsStatic() || m.IsPrivate());
286 EXPECT_TRUE(m.IsDirect());
287 }
288 } else {
289 if (!klass->IsSynthetic()) {
290 EXPECT_NE(0U, klass->NumDirectMethods());
291 }
292 }
293 EXPECT_EQ(klass->IsInterface(), !klass->HasVTable());
294 ObjPtr<mirror::IfTable> iftable = klass->GetIfTable();
295 for (int i = 0; i < klass->GetIfTableCount(); i++) {
296 ObjPtr<mirror::Class> interface = iftable->GetInterface(i);
297 ASSERT_TRUE(interface != nullptr);
298 if (klass->IsInterface()) {
299 EXPECT_EQ(0U, iftable->GetMethodArrayCount(i));
300 } else {
301 EXPECT_EQ(interface->NumDeclaredVirtualMethods(), iftable->GetMethodArrayCount(i));
302 }
303 }
304 if (klass->IsAbstract()) {
305 EXPECT_FALSE(klass->IsFinal());
306 } else {
307 EXPECT_FALSE(klass->IsAnnotation());
308 }
309 if (klass->IsFinal()) {
310 EXPECT_FALSE(klass->IsAbstract());
311 EXPECT_FALSE(klass->IsAnnotation());
312 }
313 if (klass->IsAnnotation()) {
314 EXPECT_FALSE(klass->IsFinal());
315 EXPECT_TRUE(klass->IsAbstract());
316 }
317
318 EXPECT_FALSE(klass->IsPrimitive());
319 EXPECT_TRUE(klass->CanAccess(klass.Get()));
320
321 for (ArtMethod& method : klass->GetDirectMethods(kRuntimePointerSize)) {
322 AssertMethod(&method);
323 EXPECT_TRUE(method.IsDirect());
324 EXPECT_OBJ_PTR_EQ(klass.Get(), method.GetDeclaringClass());
325 }
326
327 for (ArtMethod& method : klass->GetDeclaredVirtualMethods(kRuntimePointerSize)) {
328 AssertMethod(&method);
329 EXPECT_FALSE(method.IsDirect());
330 EXPECT_OBJ_PTR_EQ(klass.Get(), method.GetDeclaringClass());
331 }
332
333 for (ArtMethod& method : klass->GetCopiedMethods(kRuntimePointerSize)) {
334 AssertMethod(&method);
335 EXPECT_FALSE(method.IsDirect());
336 EXPECT_TRUE(method.IsCopied());
337 EXPECT_TRUE(method.GetDeclaringClass()->IsInterface())
338 << "declaring class: " << method.GetDeclaringClass()->PrettyClass();
339 EXPECT_TRUE(method.GetDeclaringClass()->IsAssignableFrom(klass.Get()))
340 << "declaring class: " << method.GetDeclaringClass()->PrettyClass();
341 }
342
343 for (size_t i = 0; i < klass->NumFields(); i++) {
344 ArtField* field = klass->GetField(i);
345 AssertField(klass.Get(), field);
346 }
347
348 // Confirm that all instances field offsets are packed together at the start.
349 EXPECT_GE(klass->ComputeNumInstanceFields(), klass->NumReferenceInstanceFields());
350 MemberOffset start_ref_offset = klass->GetFirstReferenceInstanceFieldOffset();
351 MemberOffset end_ref_offset(start_ref_offset.Uint32Value() +
352 klass->NumReferenceInstanceFields() *
353 sizeof(mirror::HeapReference<mirror::Object>));
354 MemberOffset current_ref_offset = start_ref_offset;
355 for (size_t i = 0; i < klass->NumFields(); i++) {
356 ArtField* field = klass->GetField(i);
357 if (field->IsStatic()) {
358 continue;
359 }
360 ObjPtr<mirror::Class> field_type = field->ResolveType();
361 ASSERT_TRUE(field_type != nullptr);
362 if (!field->IsPrimitiveType()) {
363 ASSERT_TRUE(!field_type->IsPrimitive());
364 ASSERT_EQ(current_ref_offset.Uint32Value(), field->GetOffset().Uint32Value());
365 if (current_ref_offset.Uint32Value() == end_ref_offset.Uint32Value()) {
366 // While Reference.referent is not primitive, the ClassLinker
367 // treats it as such so that the garbage collector won't scan it.
368 EXPECT_EQ(field->PrettyField(), "java.lang.Object java.lang.ref.Reference.referent");
369 } else {
370 current_ref_offset = MemberOffset(current_ref_offset.Uint32Value() +
371 sizeof(mirror::HeapReference<mirror::Object>));
372 }
373 } else {
374 if (field->GetOffset().Uint32Value() < end_ref_offset.Uint32Value()) {
375 // Shuffled before references.
376 ASSERT_LT(field->GetOffset().Uint32Value(), start_ref_offset.Uint32Value());
377 CHECK(!IsAligned<4>(field->GetOffset().Uint32Value()));
378 }
379 }
380 }
381 ASSERT_EQ(end_ref_offset.Uint32Value(), current_ref_offset.Uint32Value());
382
383 uint32_t total_num_reference_instance_fields = 0;
384 ObjPtr<mirror::Class> k = klass.Get();
385 while (k != nullptr) {
386 total_num_reference_instance_fields += k->NumReferenceInstanceFields();
387 k = k->GetSuperClass();
388 }
389 EXPECT_GE(total_num_reference_instance_fields, 1U); // Should always have Object's class.
390 if ((klass->GetReferenceInstanceOffsets() & mirror::Class::kVisitReferencesSlowpathMask) == 0 &&
391 klass->ShouldHaveEmbeddedVTable()) {
392 // The reference instance offsets have a bit set for each reference offset.
393 // +1 for Object's class.
394 EXPECT_EQ(static_cast<uint32_t>(POPCOUNT(klass->GetReferenceInstanceOffsets())) + 1,
395 total_num_reference_instance_fields);
396 }
397 }
398
AssertDexFileClass(ObjPtr<mirror::ClassLoader> class_loader,const std::string & descriptor)399 void AssertDexFileClass(ObjPtr<mirror::ClassLoader> class_loader, const std::string& descriptor)
400 REQUIRES_SHARED(Locks::mutator_lock_) {
401 ASSERT_FALSE(descriptor.empty());
402 Thread* self = Thread::Current();
403 StackHandleScope<1> hs(self);
404 Handle<mirror::Class> klass(
405 hs.NewHandle(class_linker_->FindSystemClass(self, descriptor.c_str())));
406 ASSERT_TRUE(klass != nullptr);
407 std::string temp;
408 EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor(&temp));
409 EXPECT_OBJ_PTR_EQ(class_loader, klass->GetClassLoader());
410 if (klass->IsPrimitive()) {
411 AssertPrimitiveClass(descriptor, klass.Get());
412 } else if (klass->IsArrayClass()) {
413 AssertArrayClass(descriptor, klass);
414 } else {
415 AssertClass(descriptor, klass);
416 }
417 }
418
AssertDexFile(const DexFile & dex,ObjPtr<mirror::ClassLoader> class_loader)419 void AssertDexFile(const DexFile& dex, ObjPtr<mirror::ClassLoader> class_loader)
420 REQUIRES_SHARED(Locks::mutator_lock_) {
421 // Verify all the classes defined in this file
422 for (size_t i = 0; i < dex.NumClassDefs(); i++) {
423 const dex::ClassDef& class_def = dex.GetClassDef(i);
424 const char* descriptor = dex.GetClassDescriptor(class_def);
425 AssertDexFileClass(class_loader, descriptor);
426 }
427 // Verify all the types referenced by this file
428 for (size_t i = 0; i < dex.NumTypeIds(); i++) {
429 const dex::TypeId& type_id = dex.GetTypeId(dex::TypeIndex(i));
430 const char* descriptor = dex.GetTypeDescriptor(type_id);
431 AssertDexFileClass(class_loader, descriptor);
432 }
433 TestRootVisitor visitor;
434 class_linker_->VisitRoots(&visitor, kVisitRootFlagAllRoots);
435 }
436
437 class TestRootVisitor : public SingleRootVisitor {
438 public:
VisitRoot(mirror::Object * root,const RootInfo & info)439 void VisitRoot(mirror::Object* root, [[maybe_unused]] const RootInfo& info) override {
440 EXPECT_TRUE(root != nullptr);
441 }
442 };
443 };
444
445 class ClassLinkerMethodHandlesTest : public ClassLinkerTest {
446 protected:
SetUpRuntimeOptions(RuntimeOptions * options)447 void SetUpRuntimeOptions(RuntimeOptions* options) override {
448 CommonRuntimeTest::SetUpRuntimeOptions(options);
449 }
450 };
451
452 struct CheckOffset {
453 size_t cpp_offset;
454 const char* java_name;
CheckOffsetart::CheckOffset455 CheckOffset(size_t c, const char* j) : cpp_offset(c), java_name(j) {}
456 };
457
458 template <typename T>
459 struct CheckOffsets {
CheckOffsetsart::CheckOffsets460 CheckOffsets(bool is_static_in, const char* class_descriptor_in)
461 : is_static(is_static_in), class_descriptor(class_descriptor_in) {}
462 bool is_static;
463 std::string class_descriptor;
464 std::vector<CheckOffset> offsets;
465
Checkart::CheckOffsets466 bool Check() REQUIRES_SHARED(Locks::mutator_lock_) {
467 Thread* self = Thread::Current();
468 ObjPtr<mirror::Class> klass =
469 Runtime::Current()->GetClassLinker()->FindSystemClass(self, class_descriptor.c_str());
470 CHECK(klass != nullptr) << class_descriptor;
471 CHECK(klass->IsMirrored()) << class_descriptor;
472
473 bool error = false;
474
475 // Classes have a different size due to padding field. Strings are variable length.
476 if (!klass->IsClassClass() && !klass->IsStringClass() && !is_static) {
477 // The RoundUp is required for some mirror classes that have a gap at the end,
478 // such as AccessibleObject, ByteArrayViewVarHandle and ByteBufferViewVarHandle.
479 // For example, the AccessibleObject has size 9 according to the class linker.
480 // However, the C++ sizeof(AccessibleObject) is 12 bytes due to alignment, even
481 // though members in C++ subclasses are actually starting at offset 9.
482 //
483 // TODO: We could define a subclass with a `uint8_t` member and check its offset instead.
484 static constexpr size_t kPackAlignment = 4;
485 size_t expected_size = RoundUp(klass->GetObjectSize(), kPackAlignment);
486 if (sizeof(T) != expected_size) {
487 LOG(ERROR) << "Class size mismatch:"
488 << " class=" << class_descriptor
489 << " Java=" << expected_size
490 << " C++=" << sizeof(T);
491 error = true;
492 }
493 }
494
495 size_t num_fields =
496 is_static ? klass->ComputeNumStaticFields() : klass->ComputeNumInstanceFields();
497 if (offsets.size() != num_fields) {
498 LOG(ERROR) << "Field count mismatch:"
499 << " class=" << class_descriptor
500 << " Java=" << num_fields
501 << " C++=" << offsets.size();
502 error = true;
503 }
504
505 size_t j = 0;
506 for (size_t i = 0; i < offsets.size(); i++) {
507 ArtField* field = nullptr;
508 do {
509 field = klass->GetField(j++);
510 } while (field->IsStatic() != is_static);
511 std::string_view field_name(field->GetName());
512 if (field_name != offsets[i].java_name) {
513 error = true;
514 }
515 }
516 j = 0;
517 if (error) {
518 for (size_t i = 0; i < offsets.size(); i++) {
519 CheckOffset& offset = offsets[i];
520 ArtField* field = nullptr;
521 do {
522 field = klass->GetField(j++);
523 } while (field->IsStatic() != is_static);
524 std::string_view field_name(field->GetName());
525 if (field_name != offsets[i].java_name) {
526 LOG(ERROR) << "JAVA FIELD ORDER MISMATCH NEXT LINE:";
527 }
528 LOG(ERROR) << "Java field order:"
529 << " i=" << i << " class=" << class_descriptor
530 << " Java=" << field_name
531 << " CheckOffsets=" << offset.java_name;
532 }
533 }
534
535 j = 0;
536 for (size_t i = 0; i < offsets.size(); i++) {
537 CheckOffset& offset = offsets[i];
538 ArtField* field = nullptr;
539 do {
540 field = klass->GetField(j++);
541 } while (field->IsStatic() != is_static);
542 if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
543 error = true;
544 }
545 }
546 j = 0;
547 if (error) {
548 for (size_t i = 0; i < offsets.size(); i++) {
549 CheckOffset& offset = offsets[i];
550 ArtField* field = nullptr;
551 do {
552 field = klass->GetField(j++);
553 } while (field->IsStatic() != is_static);
554 if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
555 LOG(ERROR) << "OFFSET MISMATCH NEXT LINE:";
556 }
557 LOG(ERROR) << "Offset: class=" << class_descriptor << " field=" << offset.java_name
558 << " Java=" << field->GetOffset().Uint32Value() << " C++=" << offset.cpp_offset;
559 }
560 }
561
562 return !error;
563 };
564
addOffsetart::CheckOffsets565 void addOffset(size_t offset, const char* name) {
566 offsets.push_back(CheckOffset(offset, name));
567 }
568
569 private:
570 DISALLOW_IMPLICIT_CONSTRUCTORS(CheckOffsets);
571 };
572
573 // Note that ClassLinkerTest.ValidateFieldOrderOfJavaCppUnionClasses
574 // is first since if it is failing, others are unlikely to succeed.
575
576 struct ObjectOffsets : public CheckOffsets<mirror::Object> {
ObjectOffsetsart::ObjectOffsets577 ObjectOffsets() : CheckOffsets<mirror::Object>(false, "Ljava/lang/Object;") {
578 addOffset(OFFSETOF_MEMBER(mirror::Object, klass_), "shadow$_klass_");
579 addOffset(OFFSETOF_MEMBER(mirror::Object, monitor_), "shadow$_monitor_");
580 }
581 };
582
583 struct ClassOffsets : public CheckOffsets<mirror::Class> {
ClassOffsetsart::ClassOffsets584 ClassOffsets() : CheckOffsets<mirror::Class>(false, "Ljava/lang/Class;") {
585 addOffset(OFFSETOF_MEMBER(mirror::Class, access_flags_), "accessFlags");
586 addOffset(OFFSETOF_MEMBER(mirror::Class, class_flags_), "classFlags");
587 addOffset(OFFSETOF_MEMBER(mirror::Class, class_loader_), "classLoader");
588 addOffset(OFFSETOF_MEMBER(mirror::Class, class_size_), "classSize");
589 addOffset(OFFSETOF_MEMBER(mirror::Class, clinit_thread_id_), "clinitThreadId");
590 addOffset(OFFSETOF_MEMBER(mirror::Class, component_type_), "componentType");
591 addOffset(OFFSETOF_MEMBER(mirror::Class, copied_methods_offset_), "copiedMethodsOffset");
592 addOffset(OFFSETOF_MEMBER(mirror::Class, dex_cache_), "dexCache");
593 addOffset(OFFSETOF_MEMBER(mirror::Class, dex_class_def_idx_), "dexClassDefIndex");
594 addOffset(OFFSETOF_MEMBER(mirror::Class, dex_type_idx_), "dexTypeIndex");
595 addOffset(OFFSETOF_MEMBER(mirror::Class, ext_data_), "extData");
596 addOffset(OFFSETOF_MEMBER(mirror::Class, fields_), "fields");
597 addOffset(OFFSETOF_MEMBER(mirror::Class, iftable_), "ifTable");
598 addOffset(OFFSETOF_MEMBER(mirror::Class, methods_), "methods");
599 addOffset(OFFSETOF_MEMBER(mirror::Class, name_), "name");
600 addOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_instance_fields_),
601 "numReferenceInstanceFields");
602 addOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_static_fields_),
603 "numReferenceStaticFields");
604 addOffset(OFFSETOF_MEMBER(mirror::Class, object_size_), "objectSize");
605 addOffset(OFFSETOF_MEMBER(mirror::Class, object_size_alloc_fast_path_),
606 "objectSizeAllocFastPath");
607 addOffset(OFFSETOF_MEMBER(mirror::Class, primitive_type_), "primitiveType");
608 addOffset(OFFSETOF_MEMBER(mirror::Class, reference_instance_offsets_),
609 "referenceInstanceOffsets");
610 addOffset(OFFSETOF_MEMBER(mirror::Class, status_), "status");
611 addOffset(OFFSETOF_MEMBER(mirror::Class, super_class_), "superClass");
612 addOffset(OFFSETOF_MEMBER(mirror::Class, virtual_methods_offset_), "virtualMethodsOffset");
613 addOffset(OFFSETOF_MEMBER(mirror::Class, vtable_), "vtable");
614 }
615 };
616
617 struct ClassExtOffsets : public CheckOffsets<mirror::ClassExt> {
ClassExtOffsetsart::ClassExtOffsets618 ClassExtOffsets() : CheckOffsets<mirror::ClassExt>(false, "Ldalvik/system/ClassExt;") {
619 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, class_value_map_), "classValueMap");
620 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, erroneous_state_error_), "erroneousStateError");
621 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, instance_jfield_ids_), "instanceJfieldIDs");
622 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, jmethod_ids_), "jmethodIDs");
623 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, obsolete_class_), "obsoleteClass");
624 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, obsolete_dex_caches_), "obsoleteDexCaches");
625 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, obsolete_methods_), "obsoleteMethods");
626 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, original_dex_file_), "originalDexFile");
627 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, pre_redefine_class_def_index_),
628 "preRedefineClassDefIndex");
629 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, pre_redefine_dex_file_ptr_),
630 "preRedefineDexFilePtr");
631 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, static_jfield_ids_), "staticJfieldIDs");
632 }
633 };
634
635 struct StringOffsets : public CheckOffsets<mirror::String> {
StringOffsetsart::StringOffsets636 StringOffsets() : CheckOffsets<mirror::String>(false, "Ljava/lang/String;") {
637 addOffset(OFFSETOF_MEMBER(mirror::String, count_), "count");
638 addOffset(OFFSETOF_MEMBER(mirror::String, hash_code_), "hash");
639 }
640 };
641
642 struct ThrowableOffsets : public CheckOffsets<mirror::Throwable> {
ThrowableOffsetsart::ThrowableOffsets643 ThrowableOffsets() : CheckOffsets<mirror::Throwable>(false, "Ljava/lang/Throwable;") {
644 addOffset(OFFSETOF_MEMBER(mirror::Throwable, backtrace_), "backtrace");
645 addOffset(OFFSETOF_MEMBER(mirror::Throwable, cause_), "cause");
646 addOffset(OFFSETOF_MEMBER(mirror::Throwable, detail_message_), "detailMessage");
647 addOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_trace_), "stackTrace");
648 addOffset(OFFSETOF_MEMBER(mirror::Throwable, suppressed_exceptions_), "suppressedExceptions");
649 }
650 };
651
652 struct StackTraceElementOffsets : public CheckOffsets<mirror::StackTraceElement> {
StackTraceElementOffsetsart::StackTraceElementOffsets653 StackTraceElementOffsets() : CheckOffsets<mirror::StackTraceElement>(
654 false, "Ljava/lang/StackTraceElement;") {
655 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, declaring_class_), "declaringClass");
656 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, file_name_), "fileName");
657 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, line_number_), "lineNumber");
658 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, method_name_), "methodName");
659 }
660 };
661
662 struct StackFrameInfoOffsets : public CheckOffsets<mirror::StackFrameInfo> {
StackFrameInfoOffsetsart::StackFrameInfoOffsets663 StackFrameInfoOffsets() : CheckOffsets<mirror::StackFrameInfo>(
664 false, "Ljava/lang/StackFrameInfo;") {
665 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, bci_), "bci");
666 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, declaring_class_), "declaringClass");
667 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, file_name_), "fileName");
668 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, line_number_), "lineNumber");
669 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, method_name_), "methodName");
670 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, method_type_), "methodType");
671 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, retain_class_ref_), "retainClassRef");
672 addOffset(OFFSETOF_MEMBER(mirror::StackFrameInfo, ste_), "ste");
673 }
674 };
675
676 struct ClassLoaderOffsets : public CheckOffsets<mirror::ClassLoader> {
ClassLoaderOffsetsart::ClassLoaderOffsets677 ClassLoaderOffsets() : CheckOffsets<mirror::ClassLoader>(false, "Ljava/lang/ClassLoader;") {
678 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, allocator_), "allocator");
679 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, class_table_), "classTable");
680 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, name_), "name");
681 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, packages_), "packages");
682 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, parent_), "parent");
683 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, proxyCache_), "proxyCache");
684 }
685 };
686
687 struct ProxyOffsets : public CheckOffsets<mirror::Proxy> {
ProxyOffsetsart::ProxyOffsets688 ProxyOffsets() : CheckOffsets<mirror::Proxy>(false, "Ljava/lang/reflect/Proxy;") {
689 addOffset(OFFSETOF_MEMBER(mirror::Proxy, h_), "h");
690 }
691 };
692
693 struct DexCacheOffsets : public CheckOffsets<mirror::DexCache> {
DexCacheOffsetsart::DexCacheOffsets694 DexCacheOffsets() : CheckOffsets<mirror::DexCache>(false, "Ljava/lang/DexCache;") {
695 addOffset(OFFSETOF_MEMBER(mirror::DexCache, class_loader_), "classLoader");
696 addOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_file_), "dexFile");
697 addOffset(OFFSETOF_MEMBER(mirror::DexCache, location_), "location");
698 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_call_sites_), "resolvedCallSites");
699 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_), "resolvedFields");
700 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_array_), "resolvedFieldsArray");
701 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_method_types_), "resolvedMethodTypes");
702 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_method_types_array_),
703 "resolvedMethodTypesArray");
704 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_), "resolvedMethods");
705 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_array_), "resolvedMethodsArray");
706 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_), "resolvedTypes");
707 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_array_), "resolvedTypesArray");
708 addOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_), "strings");
709 addOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_array_), "stringsArray");
710 }
711 };
712
713 struct ReferenceOffsets : public CheckOffsets<mirror::Reference> {
ReferenceOffsetsart::ReferenceOffsets714 ReferenceOffsets() : CheckOffsets<mirror::Reference>(false, "Ljava/lang/ref/Reference;") {
715 addOffset(OFFSETOF_MEMBER(mirror::Reference, pending_next_), "pendingNext");
716 addOffset(OFFSETOF_MEMBER(mirror::Reference, queue_), "queue");
717 addOffset(OFFSETOF_MEMBER(mirror::Reference, queue_next_), "queueNext");
718 addOffset(OFFSETOF_MEMBER(mirror::Reference, referent_), "referent");
719 }
720 };
721
722 struct FinalizerReferenceOffsets : public CheckOffsets<mirror::FinalizerReference> {
FinalizerReferenceOffsetsart::FinalizerReferenceOffsets723 FinalizerReferenceOffsets() : CheckOffsets<mirror::FinalizerReference>(
724 false, "Ljava/lang/ref/FinalizerReference;") {
725 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, next_), "next");
726 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, prev_), "prev");
727 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, zombie_), "zombie");
728 }
729 };
730
731 struct AccessibleObjectOffsets : public CheckOffsets<mirror::AccessibleObject> {
AccessibleObjectOffsetsart::AccessibleObjectOffsets732 AccessibleObjectOffsets() : CheckOffsets<mirror::AccessibleObject>(
733 false, "Ljava/lang/reflect/AccessibleObject;") {
734 addOffset(mirror::AccessibleObject::FlagOffset().Uint32Value(), "override");
735 }
736 };
737
738 struct FieldOffsets : public CheckOffsets<mirror::Field> {
FieldOffsetsart::FieldOffsets739 FieldOffsets() : CheckOffsets<mirror::Field>(false, "Ljava/lang/reflect/Field;") {
740 addOffset(OFFSETOF_MEMBER(mirror::Field, access_flags_), "accessFlags");
741 addOffset(OFFSETOF_MEMBER(mirror::Field, art_field_index_), "artFieldIndex");
742 addOffset(OFFSETOF_MEMBER(mirror::Field, declaring_class_), "declaringClass");
743 addOffset(OFFSETOF_MEMBER(mirror::Field, offset_), "offset");
744 addOffset(OFFSETOF_MEMBER(mirror::Field, type_), "type");
745 }
746 };
747
748 struct ExecutableOffsets : public CheckOffsets<mirror::Executable> {
ExecutableOffsetsart::ExecutableOffsets749 ExecutableOffsets() : CheckOffsets<mirror::Executable>(
750 false, "Ljava/lang/reflect/Executable;") {
751 addOffset(OFFSETOF_MEMBER(mirror::Executable, access_flags_), "accessFlags");
752 addOffset(OFFSETOF_MEMBER(mirror::Executable, art_method_), "artMethod");
753 addOffset(OFFSETOF_MEMBER(mirror::Executable, declaring_class_), "declaringClass");
754 addOffset(OFFSETOF_MEMBER(mirror::Executable, declaring_class_of_overridden_method_),
755 "declaringClassOfOverriddenMethod");
756 addOffset(OFFSETOF_MEMBER(mirror::Executable, dex_method_index_), "dexMethodIndex");
757 addOffset(OFFSETOF_MEMBER(mirror::Executable, has_real_parameter_data_),
758 "hasRealParameterData");
759 addOffset(OFFSETOF_MEMBER(mirror::Executable, parameters_), "parameters");
760 }
761 };
762
763 struct MethodTypeOffsets : public CheckOffsets<mirror::MethodType> {
MethodTypeOffsetsart::MethodTypeOffsets764 MethodTypeOffsets() : CheckOffsets<mirror::MethodType>(
765 false, "Ljava/lang/invoke/MethodType;") {
766 addOffset(OFFSETOF_MEMBER(mirror::MethodType, form_), "form");
767 addOffset(OFFSETOF_MEMBER(mirror::MethodType, method_descriptor_), "methodDescriptor");
768 addOffset(OFFSETOF_MEMBER(mirror::MethodType, p_types_), "ptypes");
769 addOffset(OFFSETOF_MEMBER(mirror::MethodType, r_type_), "rtype");
770 addOffset(OFFSETOF_MEMBER(mirror::MethodType, wrap_alt_), "wrapAlt");
771 }
772 };
773
774 struct MethodHandleOffsets : public CheckOffsets<mirror::MethodHandle> {
MethodHandleOffsetsart::MethodHandleOffsets775 MethodHandleOffsets() : CheckOffsets<mirror::MethodHandle>(
776 false, "Ljava/lang/invoke/MethodHandle;") {
777 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, art_field_or_method_), "artFieldOrMethod");
778 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, as_type_cache_), "asTypeCache");
779 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, cached_spread_invoker_),
780 "cachedSpreadInvoker");
781 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, handle_kind_), "handleKind");
782 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, method_type_), "type");
783 }
784 };
785
786 struct MethodHandleImplOffsets : public CheckOffsets<mirror::MethodHandleImpl> {
MethodHandleImplOffsetsart::MethodHandleImplOffsets787 MethodHandleImplOffsets() : CheckOffsets<mirror::MethodHandleImpl>(
788 false, "Ljava/lang/invoke/MethodHandleImpl;") {
789 addOffset(OFFSETOF_MEMBER(mirror::MethodHandleImpl, field_), "field");
790 addOffset(OFFSETOF_MEMBER(mirror::MethodHandleImpl, target_), "target");
791 addOffset(OFFSETOF_MEMBER(mirror::MethodHandleImpl, target_class_or_info_),
792 "targetClassOrMethodHandleInfo");
793 }
794 };
795
796 struct MethodHandlesLookupOffsets : public CheckOffsets<mirror::MethodHandlesLookup> {
MethodHandlesLookupOffsetsart::MethodHandlesLookupOffsets797 MethodHandlesLookupOffsets() : CheckOffsets<mirror::MethodHandlesLookup>(
798 false, "Ljava/lang/invoke/MethodHandles$Lookup;") {
799 addOffset(OFFSETOF_MEMBER(mirror::MethodHandlesLookup, allowed_modes_), "allowedModes");
800 addOffset(OFFSETOF_MEMBER(mirror::MethodHandlesLookup, lookup_class_), "lookupClass");
801 }
802 };
803
804 struct EmulatedStackFrameOffsets : public CheckOffsets<mirror::EmulatedStackFrame> {
EmulatedStackFrameOffsetsart::EmulatedStackFrameOffsets805 EmulatedStackFrameOffsets() : CheckOffsets<mirror::EmulatedStackFrame>(
806 false, "Ldalvik/system/EmulatedStackFrame;") {
807 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, references_), "references");
808 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, stack_frame_), "stackFrame");
809 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, type_), "type");
810 }
811 };
812
813 struct CallSiteOffsets : public CheckOffsets<mirror::CallSite> {
CallSiteOffsetsart::CallSiteOffsets814 CallSiteOffsets() : CheckOffsets<mirror::CallSite>(
815 false, "Ljava/lang/invoke/CallSite;") {
816 addOffset(OFFSETOF_MEMBER(mirror::CallSite, target_), "target");
817 }
818 };
819
820 struct VarHandleOffsets : public CheckOffsets<mirror::VarHandle> {
VarHandleOffsetsart::VarHandleOffsets821 VarHandleOffsets() : CheckOffsets<mirror::VarHandle>(
822 false, "Ljava/lang/invoke/VarHandle;") {
823 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, access_modes_bit_mask_), "accessModesBitMask");
824 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, coordinate_type0_), "coordinateType0");
825 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, coordinate_type1_), "coordinateType1");
826 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, var_type_), "varType");
827 }
828 };
829
830 struct FieldVarHandleOffsets : public CheckOffsets<mirror::FieldVarHandle> {
FieldVarHandleOffsetsart::FieldVarHandleOffsets831 FieldVarHandleOffsets() : CheckOffsets<mirror::FieldVarHandle>(
832 false, "Ljava/lang/invoke/FieldVarHandle;") {
833 addOffset(OFFSETOF_MEMBER(mirror::FieldVarHandle, art_field_), "artField");
834 }
835 };
836
837 struct StaticFieldVarHandleOffsets : public CheckOffsets<mirror::StaticFieldVarHandle> {
StaticFieldVarHandleOffsetsart::StaticFieldVarHandleOffsets838 StaticFieldVarHandleOffsets() : CheckOffsets<mirror::StaticFieldVarHandle>(
839 false, "Ljava/lang/invoke/StaticFieldVarHandle;") {
840 addOffset(OFFSETOF_MEMBER(mirror::StaticFieldVarHandle, declaring_class_), "declaringClass");
841 }
842 };
843
844 struct ArrayElementVarHandleOffsets : public CheckOffsets<mirror::ArrayElementVarHandle> {
ArrayElementVarHandleOffsetsart::ArrayElementVarHandleOffsets845 ArrayElementVarHandleOffsets() : CheckOffsets<mirror::ArrayElementVarHandle>(
846 false, "Ljava/lang/invoke/ArrayElementVarHandle;") {
847 }
848 };
849
850 struct ByteArrayViewVarHandleOffsets : public CheckOffsets<mirror::ByteArrayViewVarHandle> {
ByteArrayViewVarHandleOffsetsart::ByteArrayViewVarHandleOffsets851 ByteArrayViewVarHandleOffsets() : CheckOffsets<mirror::ByteArrayViewVarHandle>(
852 false, "Ljava/lang/invoke/ByteArrayViewVarHandle;") {
853 addOffset(OFFSETOF_MEMBER(mirror::ByteArrayViewVarHandle, native_byte_order_),
854 "nativeByteOrder");
855 }
856 };
857
858 struct ByteBufferViewVarHandleOffsets : public CheckOffsets<mirror::ByteBufferViewVarHandle> {
ByteBufferViewVarHandleOffsetsart::ByteBufferViewVarHandleOffsets859 ByteBufferViewVarHandleOffsets() : CheckOffsets<mirror::ByteBufferViewVarHandle>(
860 false, "Ljava/lang/invoke/ByteBufferViewVarHandle;") {
861 addOffset(OFFSETOF_MEMBER(mirror::ByteBufferViewVarHandle, native_byte_order_),
862 "nativeByteOrder");
863 }
864 };
865
866 // C++ fields must exactly match the fields in the Java classes. If this fails,
867 // reorder the fields in the C++ class. Managed class fields are ordered by
868 // ClassLinker::LinkFieldsHelper::LinkFields.
TEST_F(ClassLinkerTest,ValidateFieldOrderOfJavaCppUnionClasses)869 TEST_F(ClassLinkerTest, ValidateFieldOrderOfJavaCppUnionClasses) {
870 ScopedObjectAccess soa(Thread::Current());
871 EXPECT_TRUE(ObjectOffsets().Check());
872 EXPECT_TRUE(ClassOffsets().Check());
873 EXPECT_TRUE(ClassExtOffsets().Check());
874 EXPECT_TRUE(StringOffsets().Check());
875 EXPECT_TRUE(ThrowableOffsets().Check());
876 EXPECT_TRUE(StackTraceElementOffsets().Check());
877 EXPECT_TRUE(ClassLoaderOffsets().Check());
878 EXPECT_TRUE(ProxyOffsets().Check());
879 EXPECT_TRUE(DexCacheOffsets().Check());
880 EXPECT_TRUE(ReferenceOffsets().Check());
881 EXPECT_TRUE(FinalizerReferenceOffsets().Check());
882 EXPECT_TRUE(AccessibleObjectOffsets().Check());
883 EXPECT_TRUE(FieldOffsets().Check());
884 EXPECT_TRUE(ExecutableOffsets().Check());
885 EXPECT_TRUE(MethodTypeOffsets().Check());
886 EXPECT_TRUE(MethodHandleOffsets().Check());
887 EXPECT_TRUE(MethodHandleImplOffsets().Check());
888 EXPECT_TRUE(MethodHandlesLookupOffsets().Check());
889 EXPECT_TRUE(EmulatedStackFrameOffsets().Check());
890 EXPECT_TRUE(CallSiteOffsets().Check());
891 EXPECT_TRUE(VarHandleOffsets().Check());
892 EXPECT_TRUE(FieldVarHandleOffsets().Check());
893 EXPECT_TRUE(ArrayElementVarHandleOffsets().Check());
894 EXPECT_TRUE(ByteArrayViewVarHandleOffsets().Check());
895 EXPECT_TRUE(ByteBufferViewVarHandleOffsets().Check());
896 EXPECT_TRUE(StackFrameInfoOffsets().Check());
897 }
898
TEST_F(ClassLinkerTest,FindClassNonexistent)899 TEST_F(ClassLinkerTest, FindClassNonexistent) {
900 ScopedObjectAccess soa(Thread::Current());
901 AssertNonExistentClass("NoSuchClass;");
902 AssertNonExistentClass("LNoSuchClass;");
903 }
904
TEST_F(ClassLinkerTest,GetDexFiles)905 TEST_F(ClassLinkerTest, GetDexFiles) {
906 ScopedObjectAccess soa(Thread::Current());
907
908 jobject jclass_loader = LoadDex("Nested");
909 std::vector<const DexFile*> dex_files(GetDexFiles(jclass_loader));
910 ASSERT_EQ(dex_files.size(), 1U);
911 EXPECT_TRUE(dex_files[0]->GetLocation().ends_with("Nested.jar"));
912
913 jobject jclass_loader2 = LoadDex("MultiDex");
914 std::vector<const DexFile*> dex_files2(GetDexFiles(jclass_loader2));
915 ASSERT_EQ(dex_files2.size(), 2U);
916 EXPECT_TRUE(dex_files2[0]->GetLocation().ends_with("MultiDex.jar"));
917 }
918
TEST_F(ClassLinkerTest,FindClassNested)919 TEST_F(ClassLinkerTest, FindClassNested) {
920 ScopedObjectAccess soa(Thread::Current());
921 StackHandleScope<1> hs(soa.Self());
922 Handle<mirror::ClassLoader> class_loader(
923 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Nested"))));
924
925 ObjPtr<mirror::Class> outer = FindClass("LNested;", class_loader);
926 ASSERT_TRUE(outer != nullptr);
927 EXPECT_EQ(0U, outer->NumVirtualMethods());
928 EXPECT_EQ(1U, outer->NumDirectMethods());
929
930 ObjPtr<mirror::Class> inner = FindClass("LNested$Inner;", class_loader);
931 ASSERT_TRUE(inner != nullptr);
932 EXPECT_EQ(0U, inner->NumVirtualMethods());
933 EXPECT_EQ(1U, inner->NumDirectMethods());
934 }
935
TEST_F(ClassLinkerTest,FindClass_Primitives)936 TEST_F(ClassLinkerTest, FindClass_Primitives) {
937 ScopedObjectAccess soa(Thread::Current());
938 const std::string expected("BCDFIJSZV");
939 for (int ch = 1; ch < 256; ++ch) {
940 std::string descriptor;
941 descriptor.push_back(ch);
942 if (expected.find(ch) == std::string::npos) {
943 AssertNonExistentClass(descriptor);
944 } else {
945 AssertPrimitiveClass(descriptor);
946 }
947 }
948 }
949
TEST_F(ClassLinkerTest,FindClass)950 TEST_F(ClassLinkerTest, FindClass) {
951 ScopedObjectAccess soa(Thread::Current());
952 StackHandleScope<2> hs(soa.Self());
953 Handle<mirror::Class> JavaLangObject = hs.NewHandle(
954 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"));
955 AssertObjectClass(JavaLangObject.Get());
956
957 Handle<mirror::ClassLoader> class_loader(
958 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
959 AssertNonExistentClass("LMyClass;");
960 ObjPtr<mirror::Class> MyClass = FindClass("LMyClass;", class_loader);
961 ASSERT_TRUE(MyClass != nullptr);
962 ASSERT_TRUE(MyClass->GetClass() != nullptr);
963 ASSERT_OBJ_PTR_EQ(MyClass->GetClass(), MyClass->GetClass()->GetClass());
964 EXPECT_OBJ_PTR_EQ(JavaLangObject.Get(), MyClass->GetClass()->GetSuperClass());
965 std::string temp;
966 ASSERT_STREQ(MyClass->GetDescriptor(&temp), "LMyClass;");
967 EXPECT_OBJ_PTR_EQ(MyClass->GetSuperClass(), JavaLangObject.Get());
968 EXPECT_TRUE(MyClass->HasSuperClass());
969 EXPECT_OBJ_PTR_EQ(class_loader.Get(), MyClass->GetClassLoader());
970 EXPECT_EQ(ClassStatus::kResolved, MyClass->GetStatus());
971 EXPECT_FALSE(MyClass->IsErroneous());
972 EXPECT_TRUE(MyClass->IsLoaded());
973 EXPECT_TRUE(MyClass->IsResolved());
974 EXPECT_FALSE(MyClass->IsErroneousResolved());
975 EXPECT_FALSE(MyClass->IsVerified());
976 EXPECT_FALSE(MyClass->IsInitialized());
977 EXPECT_FALSE(MyClass->IsArrayInstance());
978 EXPECT_FALSE(MyClass->IsArrayClass());
979 EXPECT_TRUE(MyClass->GetComponentType() == nullptr);
980 EXPECT_FALSE(MyClass->IsInterface());
981 EXPECT_FALSE(MyClass->IsPublic());
982 EXPECT_FALSE(MyClass->IsFinal());
983 EXPECT_FALSE(MyClass->IsPrimitive());
984 EXPECT_FALSE(MyClass->IsSynthetic());
985 EXPECT_EQ(1U, MyClass->NumDirectMethods());
986 EXPECT_EQ(0U, MyClass->NumVirtualMethods());
987 EXPECT_EQ(0U, MyClass->NumFields());
988 EXPECT_EQ(0U, MyClass->NumDirectInterfaces());
989
990 EXPECT_OBJ_PTR_EQ(JavaLangObject->GetClass()->GetClass(), MyClass->GetClass()->GetClass());
991
992 // created by class_linker
993 AssertArrayClass("[C", "C", nullptr);
994 AssertArrayClass("[Ljava/lang/Object;", "Ljava/lang/Object;", nullptr);
995 // synthesized on the fly
996 AssertArrayClass("[[C", "[C", nullptr);
997 AssertArrayClass("[[[LMyClass;", "[[LMyClass;", class_loader.Get());
998 // or not available at all
999 AssertNonExistentClass("[[[[LNonExistentClass;");
1000 }
1001
TEST_F(ClassLinkerTest,LookupResolvedType)1002 TEST_F(ClassLinkerTest, LookupResolvedType) {
1003 ScopedObjectAccess soa(Thread::Current());
1004 StackHandleScope<1> hs(soa.Self());
1005 Handle<mirror::ClassLoader> class_loader(
1006 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
1007 AssertNonExistentClass("LMyClass;");
1008 ObjPtr<mirror::Class> klass = FindClass("LMyClass;", class_loader);
1009 dex::TypeIndex type_idx = klass->GetClassDef()->class_idx_;
1010 ObjPtr<mirror::DexCache> dex_cache = klass->GetDexCache();
1011 EXPECT_OBJ_PTR_EQ(
1012 class_linker_->LookupResolvedType(type_idx, dex_cache, class_loader.Get()),
1013 klass);
1014 // Zero out the resolved type and make sure LookupResolvedType still finds it.
1015 dex_cache->ClearResolvedType(type_idx);
1016 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
1017 EXPECT_OBJ_PTR_EQ(
1018 class_linker_->LookupResolvedType(type_idx, dex_cache, class_loader.Get()),
1019 klass);
1020 }
1021
TEST_F(ClassLinkerTest,LookupResolvedTypeArray)1022 TEST_F(ClassLinkerTest, LookupResolvedTypeArray) {
1023 ScopedObjectAccess soa(Thread::Current());
1024 StackHandleScope<2> hs(soa.Self());
1025 Handle<mirror::ClassLoader> class_loader(
1026 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("AllFields"))));
1027 // Get the AllFields class for the dex cache and dex file.
1028 ObjPtr<mirror::Class> all_fields_klass = FindClass("LAllFields;", class_loader);
1029 ASSERT_TRUE(all_fields_klass != nullptr);
1030 Handle<mirror::DexCache> dex_cache = hs.NewHandle(all_fields_klass->GetDexCache());
1031 const DexFile& dex_file = *dex_cache->GetDexFile();
1032 // Get the index of the array class we want to test.
1033 const dex::TypeId* array_id = dex_file.FindTypeId("[Ljava/lang/Object;");
1034 ASSERT_TRUE(array_id != nullptr);
1035 dex::TypeIndex array_idx = dex_file.GetIndexForTypeId(*array_id);
1036 // Check that the array class wasn't resolved yet.
1037 EXPECT_TRUE(
1038 class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()) == nullptr);
1039 // Resolve the array class we want to test.
1040 ObjPtr<mirror::Class> array_klass = FindClass("[Ljava/lang/Object;", class_loader);
1041 ASSERT_TRUE(array_klass != nullptr);
1042 // Test that LookupResolvedType() finds the array class.
1043 EXPECT_OBJ_PTR_EQ(
1044 class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()),
1045 array_klass);
1046 // Zero out the resolved type and make sure LookupResolvedType() still finds it.
1047 dex_cache->ClearResolvedType(array_idx);
1048 EXPECT_TRUE(dex_cache->GetResolvedType(array_idx) == nullptr);
1049 EXPECT_OBJ_PTR_EQ(
1050 class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()),
1051 array_klass);
1052 }
1053
TEST_F(ClassLinkerTest,LookupResolvedTypeErroneousInit)1054 TEST_F(ClassLinkerTest, LookupResolvedTypeErroneousInit) {
1055 ScopedObjectAccess soa(Thread::Current());
1056 StackHandleScope<3> hs(soa.Self());
1057 Handle<mirror::ClassLoader> class_loader(
1058 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("ErroneousInit"))));
1059 AssertNonExistentClass("LErroneousInit;");
1060 Handle<mirror::Class> klass = hs.NewHandle(FindClass("LErroneousInit;", class_loader));
1061 ASSERT_TRUE(klass != nullptr);
1062 dex::TypeIndex type_idx = klass->GetClassDef()->class_idx_;
1063 Handle<mirror::DexCache> dex_cache = hs.NewHandle(klass->GetDexCache());
1064 EXPECT_OBJ_PTR_EQ(
1065 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1066 klass.Get());
1067 // Zero out the resolved type and make sure LookupResolvedType still finds it.
1068 dex_cache->ClearResolvedType(type_idx);
1069 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
1070 EXPECT_OBJ_PTR_EQ(
1071 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1072 klass.Get());
1073 // Force initialization to turn the class erroneous.
1074 bool initialized = class_linker_->EnsureInitialized(soa.Self(),
1075 klass,
1076 /* can_init_fields= */ true,
1077 /* can_init_parents= */ true);
1078 EXPECT_FALSE(initialized);
1079 EXPECT_TRUE(soa.Self()->IsExceptionPending());
1080 soa.Self()->ClearException();
1081 // Check that the LookupResolvedType() can still find the resolved type.
1082 EXPECT_OBJ_PTR_EQ(
1083 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1084 klass.Get());
1085 // Zero out the resolved type and make sure LookupResolvedType() still finds it.
1086 dex_cache->ClearResolvedType(type_idx);
1087 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
1088 EXPECT_OBJ_PTR_EQ(
1089 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1090 klass.Get());
1091 }
1092
TEST_F(ClassLinkerTest,LibCore)1093 TEST_F(ClassLinkerTest, LibCore) {
1094 ScopedObjectAccess soa(Thread::Current());
1095 ASSERT_TRUE(java_lang_dex_file_ != nullptr);
1096 AssertDexFile(*java_lang_dex_file_, nullptr);
1097 }
1098
1099 // The first reference array element must be a multiple of 4 bytes from the
1100 // start of the object
TEST_F(ClassLinkerTest,ValidateObjectArrayElementsOffset)1101 TEST_F(ClassLinkerTest, ValidateObjectArrayElementsOffset) {
1102 ScopedObjectAccess soa(Thread::Current());
1103 ObjPtr<mirror::Class> array_class =
1104 class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
1105 ObjPtr<mirror::ObjectArray<mirror::String>> array =
1106 mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), array_class, 0);
1107 uintptr_t data_offset =
1108 reinterpret_cast<uintptr_t>(array->GetRawData(sizeof(mirror::HeapReference<mirror::String>),
1109 0));
1110 if (sizeof(mirror::HeapReference<mirror::String>) == sizeof(int32_t)) {
1111 EXPECT_TRUE(IsAligned<4>(data_offset)); // Check 4 byte alignment.
1112 } else {
1113 EXPECT_TRUE(IsAligned<8>(data_offset)); // Check 8 byte alignment.
1114 }
1115 }
1116
TEST_F(ClassLinkerTest,ValidatePrimitiveArrayElementsOffset)1117 TEST_F(ClassLinkerTest, ValidatePrimitiveArrayElementsOffset) {
1118 ScopedObjectAccess soa(Thread::Current());
1119 StackHandleScope<5> hs(soa.Self());
1120 Handle<mirror::LongArray> long_array(hs.NewHandle(mirror::LongArray::Alloc(soa.Self(), 0)));
1121 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[J"), long_array->GetClass());
1122 uintptr_t data_offset = reinterpret_cast<uintptr_t>(long_array->GetData());
1123 EXPECT_TRUE(IsAligned<8>(data_offset)); // Longs require 8 byte alignment
1124
1125 Handle<mirror::DoubleArray> double_array(hs.NewHandle(mirror::DoubleArray::Alloc(soa.Self(), 0)));
1126 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[D"), double_array->GetClass());
1127 data_offset = reinterpret_cast<uintptr_t>(double_array->GetData());
1128 EXPECT_TRUE(IsAligned<8>(data_offset)); // Doubles require 8 byte alignment
1129
1130 Handle<mirror::IntArray> int_array(hs.NewHandle(mirror::IntArray::Alloc(soa.Self(), 0)));
1131 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[I"), int_array->GetClass());
1132 data_offset = reinterpret_cast<uintptr_t>(int_array->GetData());
1133 EXPECT_TRUE(IsAligned<4>(data_offset)); // Ints require 4 byte alignment
1134
1135 Handle<mirror::CharArray> char_array(hs.NewHandle(mirror::CharArray::Alloc(soa.Self(), 0)));
1136 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[C"), char_array->GetClass());
1137 data_offset = reinterpret_cast<uintptr_t>(char_array->GetData());
1138 EXPECT_TRUE(IsAligned<2>(data_offset)); // Chars require 2 byte alignment
1139
1140 Handle<mirror::ShortArray> short_array(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 0)));
1141 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[S"), short_array->GetClass());
1142 data_offset = reinterpret_cast<uintptr_t>(short_array->GetData());
1143 EXPECT_TRUE(IsAligned<2>(data_offset)); // Shorts require 2 byte alignment
1144
1145 // Take it as given that bytes and booleans have byte alignment
1146 }
1147
TEST_F(ClassLinkerTest,TwoClassLoadersOneClass)1148 TEST_F(ClassLinkerTest, TwoClassLoadersOneClass) {
1149 ScopedObjectAccess soa(Thread::Current());
1150 StackHandleScope<3> hs(soa.Self());
1151 Handle<mirror::ClassLoader> class_loader_1(
1152 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
1153 Handle<mirror::ClassLoader> class_loader_2(
1154 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
1155 Handle<mirror::Class> MyClass_1 = hs.NewHandle(FindClass("LMyClass;", class_loader_1));
1156 ObjPtr<mirror::Class> MyClass_2 = FindClass("LMyClass;", class_loader_2);
1157 EXPECT_TRUE(MyClass_1 != nullptr);
1158 EXPECT_TRUE(MyClass_2 != nullptr);
1159 EXPECT_OBJ_PTR_NE(MyClass_1.Get(), MyClass_2);
1160 }
1161
TEST_F(ClassLinkerTest,StaticFields)1162 TEST_F(ClassLinkerTest, StaticFields) {
1163 ScopedObjectAccess soa(Thread::Current());
1164 StackHandleScope<2> hs(soa.Self());
1165 Handle<mirror::ClassLoader> class_loader(
1166 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1167 Handle<mirror::Class> statics = hs.NewHandle(FindClass("LStatics;", class_loader));
1168 class_linker_->EnsureInitialized(soa.Self(), statics, true, true);
1169
1170 // Static final primitives that are initialized by a compile-time constant
1171 // expression resolve to a copy of a constant value from the constant pool.
1172 // So <clinit> should be null.
1173 ArtMethod* clinit = statics->FindClassMethod("<clinit>", "()V", kRuntimePointerSize);
1174 EXPECT_TRUE(clinit == nullptr);
1175
1176 EXPECT_EQ(9U, statics->NumFields());
1177
1178 ArtField* s0 = statics->FindStaticField("s0", "Z");
1179 EXPECT_EQ(s0->GetTypeAsPrimitiveType(), Primitive::kPrimBoolean);
1180 EXPECT_EQ(true, s0->GetBoolean(statics.Get()));
1181 s0->SetBoolean<false>(statics.Get(), false);
1182
1183 ArtField* s1 = statics->FindStaticField("s1", "B");
1184 EXPECT_EQ(s1->GetTypeAsPrimitiveType(), Primitive::kPrimByte);
1185 EXPECT_EQ(5, s1->GetByte(statics.Get()));
1186 s1->SetByte<false>(statics.Get(), 6);
1187
1188 ArtField* s2 = statics->FindStaticField("s2", "C");
1189 EXPECT_EQ(s2->GetTypeAsPrimitiveType(), Primitive::kPrimChar);
1190 EXPECT_EQ('a', s2->GetChar(statics.Get()));
1191 s2->SetChar<false>(statics.Get(), 'b');
1192
1193 ArtField* s3 = statics->FindStaticField("s3", "S");
1194 EXPECT_EQ(s3->GetTypeAsPrimitiveType(), Primitive::kPrimShort);
1195 EXPECT_EQ(-536, s3->GetShort(statics.Get()));
1196 s3->SetShort<false>(statics.Get(), -535);
1197
1198 ArtField* s4 = statics->FindStaticField("s4", "I");
1199 EXPECT_EQ(s4->GetTypeAsPrimitiveType(), Primitive::kPrimInt);
1200 EXPECT_EQ(2000000000, s4->GetInt(statics.Get()));
1201 s4->SetInt<false>(statics.Get(), 2000000001);
1202
1203 ArtField* s5 = statics->FindStaticField("s5", "J");
1204 EXPECT_EQ(s5->GetTypeAsPrimitiveType(), Primitive::kPrimLong);
1205 EXPECT_EQ(0x1234567890abcdefLL, s5->GetLong(statics.Get()));
1206 s5->SetLong<false>(statics.Get(), INT64_C(0x34567890abcdef12));
1207
1208 ArtField* s6 = statics->FindStaticField("s6", "F");
1209 EXPECT_EQ(s6->GetTypeAsPrimitiveType(), Primitive::kPrimFloat);
1210 EXPECT_DOUBLE_EQ(0.5, s6->GetFloat(statics.Get()));
1211 s6->SetFloat<false>(statics.Get(), 0.75);
1212
1213 ArtField* s7 = statics->FindStaticField("s7", "D");
1214 EXPECT_EQ(s7->GetTypeAsPrimitiveType(), Primitive::kPrimDouble);
1215 EXPECT_DOUBLE_EQ(16777217.0, s7->GetDouble(statics.Get()));
1216 s7->SetDouble<false>(statics.Get(), 16777219);
1217
1218 ArtField* s8 = statics->FindStaticField("s8", "Ljava/lang/String;");
1219 EXPECT_EQ(s8->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
1220 EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("android"));
1221 ObjPtr<mirror::String> str_value = mirror::String::AllocFromModifiedUtf8(soa.Self(), "robot");
1222 s8->SetObject<false>(s8->GetDeclaringClass(), str_value);
1223
1224 // TODO: Remove EXPECT_FALSE when GCC can handle EXPECT_EQ
1225 // http://code.google.com/p/googletest/issues/detail?id=322
1226 EXPECT_FALSE(s0->GetBoolean(statics.Get()));
1227 EXPECT_EQ(6, s1->GetByte(statics.Get()));
1228 EXPECT_EQ('b', s2->GetChar(statics.Get()));
1229 EXPECT_EQ(-535, s3->GetShort(statics.Get()));
1230 EXPECT_EQ(2000000001, s4->GetInt(statics.Get()));
1231 EXPECT_EQ(INT64_C(0x34567890abcdef12), s5->GetLong(statics.Get()));
1232 EXPECT_FLOAT_EQ(0.75, s6->GetFloat(statics.Get()));
1233 EXPECT_DOUBLE_EQ(16777219.0, s7->GetDouble(statics.Get()));
1234 EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("robot"));
1235 }
1236
TEST_F(ClassLinkerTest,Interfaces)1237 TEST_F(ClassLinkerTest, Interfaces) {
1238 ScopedObjectAccess soa(Thread::Current());
1239 StackHandleScope<6> hs(soa.Self());
1240 Handle<mirror::ClassLoader> class_loader(
1241 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Interfaces"))));
1242 Handle<mirror::Class> I = hs.NewHandle(FindClass("LInterfaces$I;", class_loader));
1243 Handle<mirror::Class> J = hs.NewHandle(FindClass("LInterfaces$J;", class_loader));
1244 Handle<mirror::Class> K = hs.NewHandle(FindClass("LInterfaces$K;", class_loader));
1245 Handle<mirror::Class> A = hs.NewHandle(FindClass("LInterfaces$A;", class_loader));
1246 Handle<mirror::Class> B = hs.NewHandle(FindClass("LInterfaces$B;", class_loader));
1247 EXPECT_TRUE(I->IsAssignableFrom(A.Get()));
1248 EXPECT_TRUE(J->IsAssignableFrom(A.Get()));
1249 EXPECT_TRUE(J->IsAssignableFrom(K.Get()));
1250 EXPECT_TRUE(K->IsAssignableFrom(B.Get()));
1251 EXPECT_TRUE(J->IsAssignableFrom(B.Get()));
1252
1253 const std::string_view void_sig("()V");
1254 ArtMethod* Ii = I->FindClassMethod("i", void_sig, kRuntimePointerSize);
1255 ArtMethod* Jj1 = J->FindClassMethod("j1", void_sig, kRuntimePointerSize);
1256 ArtMethod* Jj2 = J->FindClassMethod("j2", void_sig, kRuntimePointerSize);
1257 ArtMethod* Kj1 = K->FindInterfaceMethod("j1", void_sig, kRuntimePointerSize);
1258 ArtMethod* Kj2 = K->FindInterfaceMethod("j2", void_sig, kRuntimePointerSize);
1259 ArtMethod* Kk = K->FindInterfaceMethod("k", void_sig, kRuntimePointerSize);
1260 ArtMethod* Ai = A->FindClassMethod("i", void_sig, kRuntimePointerSize);
1261 ArtMethod* Aj1 = A->FindClassMethod("j1", void_sig, kRuntimePointerSize);
1262 ArtMethod* Aj2 = A->FindClassMethod("j2", void_sig, kRuntimePointerSize);
1263 ASSERT_TRUE(Ii != nullptr);
1264 ASSERT_FALSE(Ii->IsDirect());
1265 ASSERT_TRUE(Jj1 != nullptr);
1266 ASSERT_FALSE(Jj1->IsDirect());
1267 ASSERT_TRUE(Jj2 != nullptr);
1268 ASSERT_FALSE(Jj2->IsDirect());
1269 ASSERT_TRUE(Kj1 != nullptr);
1270 ASSERT_TRUE(Kj2 != nullptr);
1271 ASSERT_TRUE(Kk != nullptr);
1272 ASSERT_TRUE(Ai != nullptr);
1273 ASSERT_FALSE(Ai->IsDirect());
1274 ASSERT_TRUE(Aj1 != nullptr);
1275 ASSERT_FALSE(Aj1->IsDirect());
1276 ASSERT_TRUE(Aj2 != nullptr);
1277 ASSERT_FALSE(Aj2->IsDirect());
1278 EXPECT_NE(Ii, Ai);
1279 EXPECT_NE(Jj1, Aj1);
1280 EXPECT_NE(Jj2, Aj2);
1281 EXPECT_EQ(Kj1, Jj1);
1282 EXPECT_EQ(Kj2, Jj2);
1283 EXPECT_EQ(Ai, A->FindVirtualMethodForInterface(Ii, kRuntimePointerSize));
1284 EXPECT_EQ(Aj1, A->FindVirtualMethodForInterface(Jj1, kRuntimePointerSize));
1285 EXPECT_EQ(Aj2, A->FindVirtualMethodForInterface(Jj2, kRuntimePointerSize));
1286 EXPECT_EQ(Ai, A->FindVirtualMethodForVirtualOrInterface(Ii, kRuntimePointerSize));
1287 EXPECT_EQ(Aj1, A->FindVirtualMethodForVirtualOrInterface(Jj1, kRuntimePointerSize));
1288 EXPECT_EQ(Aj2, A->FindVirtualMethodForVirtualOrInterface(Jj2, kRuntimePointerSize));
1289
1290 ArtField* Afoo = A->FindStaticField("foo", "Ljava/lang/String;");
1291 ArtField* Bfoo = B->FindStaticField("foo", "Ljava/lang/String;");
1292 ArtField* Jfoo = J->FindStaticField("foo", "Ljava/lang/String;");
1293 ArtField* Kfoo = K->FindStaticField("foo", "Ljava/lang/String;");
1294 ASSERT_TRUE(Afoo != nullptr);
1295 EXPECT_EQ(Afoo, Bfoo);
1296 EXPECT_EQ(Afoo, Jfoo);
1297 EXPECT_EQ(Afoo, Kfoo);
1298 }
1299
TEST_F(ClassLinkerTest,ResolveVerifyAndClinit)1300 TEST_F(ClassLinkerTest, ResolveVerifyAndClinit) {
1301 // pretend we are trying to get the static storage for the StaticsFromCode class.
1302
1303 // case 1, get the uninitialized storage from StaticsFromCode.<clinit>
1304 // case 2, get the initialized storage from StaticsFromCode.getS0
1305
1306 ScopedObjectAccess soa(Thread::Current());
1307 jobject jclass_loader = LoadDex("StaticsFromCode");
1308 const DexFile* dex_file = GetFirstDexFile(jclass_loader);
1309 StackHandleScope<1> hs(soa.Self());
1310 Handle<mirror::ClassLoader> class_loader(
1311 hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
1312 ObjPtr<mirror::Class> klass = FindClass("LStaticsFromCode;", class_loader);
1313 ArtMethod* clinit = klass->FindClassInitializer(kRuntimePointerSize);
1314 ArtMethod* getS0 =
1315 klass->FindClassMethod("getS0", "()Ljava/lang/Object;", kRuntimePointerSize);
1316 ASSERT_TRUE(getS0 != nullptr);
1317 ASSERT_TRUE(getS0->IsStatic());
1318 const dex::TypeId* type_id = dex_file->FindTypeId("LStaticsFromCode;");
1319 ASSERT_TRUE(type_id != nullptr);
1320 dex::TypeIndex type_idx = dex_file->GetIndexForTypeId(*type_id);
1321 ObjPtr<mirror::Class> uninit = ResolveVerifyAndClinit(type_idx,
1322 clinit,
1323 soa.Self(),
1324 /* can_run_clinit= */ true,
1325 /* verify_access= */ false);
1326 EXPECT_TRUE(uninit != nullptr);
1327 EXPECT_FALSE(uninit->IsInitialized());
1328 ObjPtr<mirror::Class> init = ResolveVerifyAndClinit(type_idx,
1329 getS0,
1330 soa.Self(),
1331 /* can_run_clinit= */ true,
1332 /* verify_access= */ false);
1333 EXPECT_TRUE(init != nullptr);
1334 EXPECT_TRUE(init->IsInitialized());
1335 }
1336
TEST_F(ClassLinkerTest,ErroneousClass)1337 TEST_F(ClassLinkerTest, ErroneousClass) {
1338 ScopedObjectAccess soa(Thread::Current());
1339 jobject jclass_loader = LoadMultiDex("ErroneousA", "ErroneousB");
1340 StackHandleScope<1> hs(soa.Self());
1341 Handle<mirror::ClassLoader> class_loader(
1342 hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
1343 hs.Self()->AssertNoPendingException();
1344 const char* descriptor = "LErroneous;";
1345 ObjPtr<mirror::Class> klass = FindClass(descriptor, class_loader);
1346 // Erronenous since we are extending final class.
1347 hs.Self()->AssertPendingException();
1348 EXPECT_TRUE(klass == nullptr);
1349 klass = class_linker_->LookupClass(soa.Self(), descriptor, class_loader.Get());
1350 EXPECT_FALSE(klass == nullptr);
1351 EXPECT_TRUE(klass->IsErroneous());
1352 EXPECT_TRUE(klass->GetIfTable() != nullptr);
1353 }
1354
TEST_F(ClassLinkerTest,FinalizableBit)1355 TEST_F(ClassLinkerTest, FinalizableBit) {
1356 ScopedObjectAccess soa(Thread::Current());
1357 ObjPtr<mirror::Class> c;
1358
1359 // Object has a finalize method, but we know it's empty.
1360 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1361 EXPECT_FALSE(c->IsFinalizable());
1362
1363 // Enum has a finalize method to prevent its subclasses from implementing one.
1364 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Enum;");
1365 EXPECT_FALSE(c->IsFinalizable());
1366
1367 // RoundingMode is an enum.
1368 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/math/RoundingMode;");
1369 EXPECT_FALSE(c->IsFinalizable());
1370
1371 // RandomAccessFile extends Object and overrides finalize.
1372 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/RandomAccessFile;");
1373 EXPECT_TRUE(c->IsFinalizable());
1374
1375 // FileInputStream is finalizable and extends InputStream which isn't.
1376 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/InputStream;");
1377 EXPECT_FALSE(c->IsFinalizable());
1378 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/FileInputStream;");
1379 EXPECT_TRUE(c->IsFinalizable());
1380
1381 // ScheduledThreadPoolExecutor doesn't have a finalize method but
1382 // extends ThreadPoolExecutor which does.
1383 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ThreadPoolExecutor;");
1384 EXPECT_TRUE(c->IsFinalizable());
1385 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ScheduledThreadPoolExecutor;");
1386 EXPECT_TRUE(c->IsFinalizable());
1387 }
1388
TEST_F(ClassLinkerTest,ClassRootDescriptors)1389 TEST_F(ClassLinkerTest, ClassRootDescriptors) {
1390 ScopedObjectAccess soa(Thread::Current());
1391 std::string temp;
1392 for (size_t i = 0; i < static_cast<size_t>(ClassRoot::kMax); i++) {
1393 ObjPtr<mirror::Class> klass = GetClassRoot(ClassRoot(i), class_linker_);
1394 EXPECT_GT(strlen(klass->GetDescriptor(&temp)), 0U);
1395 EXPECT_STREQ(klass->GetDescriptor(&temp), GetClassRootDescriptor(ClassRoot(i))) << " i = " << i;
1396 }
1397 }
1398
TEST_F(ClassLinkerTest,ValidatePredefinedClassSizes)1399 TEST_F(ClassLinkerTest, ValidatePredefinedClassSizes) {
1400 ScopedObjectAccess soa(Thread::Current());
1401 ScopedNullHandle<mirror::ClassLoader> class_loader;
1402 ObjPtr<mirror::Class> c;
1403
1404 c = FindClass("Ljava/lang/Class;", class_loader);
1405 ASSERT_TRUE(c != nullptr);
1406 EXPECT_EQ(c->GetClassSize(), mirror::Class::ClassClassSize(kRuntimePointerSize));
1407
1408 c = FindClass("Ljava/lang/Object;", class_loader);
1409 ASSERT_TRUE(c != nullptr);
1410 EXPECT_EQ(c->GetClassSize(), mirror::Object::ClassSize(kRuntimePointerSize));
1411
1412 c = FindClass("Ljava/lang/String;", class_loader);
1413 ASSERT_TRUE(c != nullptr);
1414 EXPECT_EQ(c->GetClassSize(), mirror::String::ClassSize(kRuntimePointerSize));
1415
1416 c = FindClass("Ljava/lang/DexCache;", class_loader);
1417 ASSERT_TRUE(c != nullptr);
1418 EXPECT_EQ(c->GetClassSize(), mirror::DexCache::ClassSize(kRuntimePointerSize));
1419 }
1420
CheckMethod(ArtMethod * method,bool verified)1421 static void CheckMethod(ArtMethod* method, bool verified)
1422 REQUIRES_SHARED(Locks::mutator_lock_) {
1423 if (!method->IsNative() && !method->IsAbstract()) {
1424 EXPECT_EQ((method->GetAccessFlags() & kAccSkipAccessChecks) != 0U, verified)
1425 << method->PrettyMethod(true);
1426 }
1427 }
1428
CheckVerificationAttempted(ObjPtr<mirror::Class> c,bool preverified)1429 static void CheckVerificationAttempted(ObjPtr<mirror::Class> c, bool preverified)
1430 REQUIRES_SHARED(Locks::mutator_lock_) {
1431 for (auto& m : c->GetMethods(kRuntimePointerSize)) {
1432 CheckMethod(&m, preverified);
1433 }
1434 }
1435
TEST_F(ClassLinkerTest,Preverified_InitializedBoot)1436 TEST_F(ClassLinkerTest, Preverified_InitializedBoot) {
1437 ScopedObjectAccess soa(Thread::Current());
1438
1439 ObjPtr<mirror::Class> JavaLangObject =
1440 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1441 ASSERT_TRUE(JavaLangObject != nullptr);
1442 EXPECT_TRUE(JavaLangObject->IsInitialized()) << "Not testing already initialized class from the "
1443 "core";
1444 CheckVerificationAttempted(JavaLangObject, true);
1445 }
1446
TEST_F(ClassLinkerTest,Preverified_UninitializedBoot)1447 TEST_F(ClassLinkerTest, Preverified_UninitializedBoot) {
1448 ScopedObjectAccess soa(Thread::Current());
1449
1450 StackHandleScope<1> hs(soa.Self());
1451
1452 Handle<mirror::Class> security_manager(hs.NewHandle(class_linker_->FindSystemClass(
1453 soa.Self(), "Ljava/lang/SecurityManager;")));
1454 EXPECT_FALSE(security_manager->IsInitialized()) << "Not testing uninitialized class from the "
1455 "core";
1456
1457 CheckVerificationAttempted(security_manager.Get(), false);
1458
1459 class_linker_->EnsureInitialized(soa.Self(), security_manager, true, true);
1460 CheckVerificationAttempted(security_manager.Get(), true);
1461 }
1462
TEST_F(ClassLinkerTest,Preverified_App)1463 TEST_F(ClassLinkerTest, Preverified_App) {
1464 ScopedObjectAccess soa(Thread::Current());
1465
1466 StackHandleScope<2> hs(soa.Self());
1467 Handle<mirror::ClassLoader> class_loader(
1468 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1469 Handle<mirror::Class> statics = hs.NewHandle(FindClass("LStatics;", class_loader));
1470
1471 CheckVerificationAttempted(statics.Get(), false);
1472
1473 class_linker_->EnsureInitialized(soa.Self(), statics, true, true);
1474 CheckVerificationAttempted(statics.Get(), true);
1475 }
1476
TEST_F(ClassLinkerTest,IsBootStrapClassLoaded)1477 TEST_F(ClassLinkerTest, IsBootStrapClassLoaded) {
1478 ScopedObjectAccess soa(Thread::Current());
1479
1480 StackHandleScope<3> hs(soa.Self());
1481 Handle<mirror::ClassLoader> class_loader(
1482 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1483
1484 // java.lang.Object is a bootstrap class.
1485 Handle<mirror::Class> jlo_class(
1486 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;")));
1487 ASSERT_TRUE(jlo_class != nullptr);
1488 EXPECT_TRUE(jlo_class->IsBootStrapClassLoaded());
1489
1490 // Statics is not a bootstrap class.
1491 Handle<mirror::Class> statics = hs.NewHandle(FindClass("LStatics;", class_loader));
1492 ASSERT_TRUE(statics != nullptr);
1493 EXPECT_FALSE(statics->IsBootStrapClassLoaded());
1494 }
1495
1496 // Regression test for b/26799552.
TEST_F(ClassLinkerTest,RegisterDexFileName)1497 TEST_F(ClassLinkerTest, RegisterDexFileName) {
1498 ScopedObjectAccess soa(Thread::Current());
1499 StackHandleScope<2> hs(soa.Self());
1500 ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
1501 MutableHandle<mirror::DexCache> dex_cache(hs.NewHandle<mirror::DexCache>(nullptr));
1502 {
1503 ReaderMutexLock mu(soa.Self(), *Locks::dex_lock_);
1504 for (const auto& entry : class_linker->GetDexCachesData()) {
1505 const ClassLinker::DexCacheData& data = entry.second;
1506 dex_cache.Assign(soa.Self()->DecodeJObject(data.weak_root)->AsDexCache());
1507 if (dex_cache != nullptr) {
1508 break;
1509 }
1510 }
1511 ASSERT_TRUE(dex_cache != nullptr);
1512 }
1513 const uint16_t data[] = { 0x20AC, 0x20A1 };
1514 Handle<mirror::String> location(hs.NewHandle(mirror::String::AllocFromUtf16(soa.Self(),
1515 arraysize(data),
1516 data)));
1517 const DexFile* old_dex_file = dex_cache->GetDexFile();
1518
1519 auto container =
1520 std::make_shared<MemoryDexFileContainer>(old_dex_file->Begin(), old_dex_file->Size());
1521 std::unique_ptr<DexFile> dex_file(new StandardDexFile(
1522 old_dex_file->Begin(), location->ToModifiedUtf8(), 0u, nullptr, std::move(container)));
1523 // Make a copy of the dex cache with changed name.
1524 dex_cache.Assign(class_linker->AllocAndInitializeDexCache(Thread::Current(),
1525 *dex_file,
1526 /* class_loader= */ nullptr));
1527 DCHECK_EQ(dex_cache->GetLocation()->CompareTo(location.Get()), 0);
1528 {
1529 WriterMutexLock mu(soa.Self(), *Locks::dex_lock_);
1530 // Check that inserting with a UTF16 name works.
1531 class_linker->RegisterDexFileLocked(*dex_file, dex_cache.Get(), /* class_loader= */ nullptr);
1532 }
1533 }
1534
TEST_F(ClassLinkerMethodHandlesTest,TestResolveMethodTypes)1535 TEST_F(ClassLinkerMethodHandlesTest, TestResolveMethodTypes) {
1536 ScopedObjectAccess soa(Thread::Current());
1537 StackHandleScope<7> hs(soa.Self());
1538
1539 Handle<mirror::ClassLoader> class_loader(
1540 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MethodTypes"))));
1541 Handle<mirror::Class> method_types = hs.NewHandle(FindClass("LMethodTypes;", class_loader));
1542 class_linker_->EnsureInitialized(soa.Self(), method_types, true, true);
1543
1544 ArtMethod* method1 = method_types->FindClassMethod(
1545 "method1",
1546 "(Ljava/lang/String;)Ljava/lang/String;",
1547 kRuntimePointerSize);
1548 ASSERT_TRUE(method1 != nullptr);
1549 ASSERT_FALSE(method1->IsDirect());
1550
1551 const DexFile& dex_file = *(method1->GetDexFile());
1552 Handle<mirror::DexCache> dex_cache = hs.NewHandle(
1553 class_linker_->FindDexCache(soa.Self(), dex_file));
1554
1555 const dex::MethodId& method1_id = dex_file.GetMethodId(method1->GetDexMethodIndex());
1556
1557 // This is the MethodType corresponding to the prototype of
1558 // String MethodTypes# method1(String).
1559 // Its RType = Ljava/lang/String;
1560 // Its PTypes = { Ljava/lang/String; }
1561 Handle<mirror::MethodType> method1_type = hs.NewHandle(
1562 class_linker_->ResolveMethodType(soa.Self(), method1_id.proto_idx_, dex_cache, class_loader));
1563
1564 // Assert that the method type was resolved successfully.
1565 ASSERT_TRUE(method1_type != nullptr);
1566
1567 // Assert that the return type and the method arguments are as we expect.
1568 Handle<mirror::Class> string_class = hs.NewHandle(FindClass("Ljava/lang/String;", class_loader));
1569 ASSERT_OBJ_PTR_EQ(string_class.Get(), method1_type->GetRType());
1570 ASSERT_OBJ_PTR_EQ(string_class.Get(), method1_type->GetPTypes()->Get(0));
1571
1572 // Resolve the method type again and assert that we get back the same value.
1573 Handle<mirror::MethodType> method1_type2 = hs.NewHandle(
1574 class_linker_->ResolveMethodType(soa.Self(), method1_id.proto_idx_, dex_cache, class_loader));
1575 ASSERT_OBJ_PTR_EQ(method1_type.Get(), method1_type2.Get());
1576
1577 // Resolve the MethodType associated with a different method signature
1578 // and assert it's different.
1579 ArtMethod* method2 = method_types->FindClassMethod(
1580 "method2",
1581 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
1582 kRuntimePointerSize);
1583 ASSERT_TRUE(method2 != nullptr);
1584 ASSERT_FALSE(method2->IsDirect());
1585 const dex::MethodId& method2_id = dex_file.GetMethodId(method2->GetDexMethodIndex());
1586 Handle<mirror::MethodType> method2_type = hs.NewHandle(
1587 class_linker_->ResolveMethodType(soa.Self(), method2_id.proto_idx_, dex_cache, class_loader));
1588 ASSERT_OBJ_PTR_NE(method1_type.Get(), method2_type.Get());
1589 }
1590
1591 // Verify that ClassLinker's CreateWellknownClassLoader works as expected
1592 // by creating a chain of class loaders with various dex files.
TEST_F(ClassLinkerTest,CreateWellKnownClassLoader)1593 TEST_F(ClassLinkerTest, CreateWellKnownClassLoader) {
1594 // LoadDexIn*ClassLoader methods already assert that the parent loader is the expected one.
1595 // No need to check again.
1596 jobject class_loader_a = LoadDexInPathClassLoader("MyClass", nullptr);
1597 jobject class_loader_b = LoadDexInDelegateLastClassLoader("Nested", class_loader_a);
1598 jobject class_loader_c = LoadDexInPathClassLoader("MultiDex", class_loader_b);
1599 LoadDexInDelegateLastClassLoader("Interfaces", class_loader_c);
1600 }
1601
TEST_F(ClassLinkerTest,PrettyClass)1602 TEST_F(ClassLinkerTest, PrettyClass) {
1603 ScopedObjectAccess soa(Thread::Current());
1604 EXPECT_EQ("null", mirror::Class::PrettyClass(nullptr));
1605 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
1606 ASSERT_TRUE(c != nullptr);
1607 ObjPtr<mirror::Object> o = mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), c, 0);
1608 EXPECT_EQ("java.lang.Class<java.lang.String[]>", mirror::Class::PrettyClass(o->GetClass()));
1609 }
1610
TEST_F(ClassLinkerTest,PrettyClassAndClassLoader)1611 TEST_F(ClassLinkerTest, PrettyClassAndClassLoader) {
1612 ScopedObjectAccess soa(Thread::Current());
1613 EXPECT_EQ("null", mirror::Class::PrettyClassAndClassLoader(nullptr));
1614 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
1615 ASSERT_TRUE(c != nullptr);
1616 ObjPtr<mirror::Object> o = mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), c, 0);
1617 EXPECT_EQ("java.lang.Class<java.lang.String[],null>",
1618 mirror::Class::PrettyClassAndClassLoader(o->GetClass()));
1619 }
1620
TEST_F(ClassLinkerTest,PrettyField)1621 TEST_F(ClassLinkerTest, PrettyField) {
1622 ScopedObjectAccess soa(Thread::Current());
1623 EXPECT_EQ("null", ArtField::PrettyField(nullptr));
1624
1625 ObjPtr<mirror::Class> java_lang_String = class_linker_->FindSystemClass(soa.Self(),
1626 "Ljava/lang/String;");
1627
1628 ArtField* f;
1629 f = java_lang_String->FindDeclaredInstanceField("count", "I");
1630 EXPECT_EQ("int java.lang.String.count", f->PrettyField());
1631 EXPECT_EQ("java.lang.String.count", f->PrettyField(false));
1632 }
1633
TEST_F(ClassLinkerTest,JniShortName_JniLongName)1634 TEST_F(ClassLinkerTest, JniShortName_JniLongName) {
1635 ScopedObjectAccess soa(Thread::Current());
1636 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/String;");
1637 ASSERT_TRUE(c != nullptr);
1638 ArtMethod* m;
1639
1640 m = c->FindClassMethod("charAt", "(I)C", kRuntimePointerSize);
1641 ASSERT_TRUE(m != nullptr);
1642 ASSERT_FALSE(m->IsDirect());
1643 EXPECT_EQ("Java_java_lang_String_charAt", m->JniShortName());
1644 EXPECT_EQ("Java_java_lang_String_charAt__I", m->JniLongName());
1645
1646 m = c->FindClassMethod("indexOf", "(Ljava/lang/String;I)I", kRuntimePointerSize);
1647 ASSERT_TRUE(m != nullptr);
1648 ASSERT_FALSE(m->IsDirect());
1649 EXPECT_EQ("Java_java_lang_String_indexOf", m->JniShortName());
1650 EXPECT_EQ("Java_java_lang_String_indexOf__Ljava_lang_String_2I", m->JniLongName());
1651
1652 m = c->FindClassMethod("copyValueOf", "([CII)Ljava/lang/String;", kRuntimePointerSize);
1653 ASSERT_TRUE(m != nullptr);
1654 ASSERT_TRUE(m->IsStatic());
1655 EXPECT_EQ("Java_java_lang_String_copyValueOf", m->JniShortName());
1656 EXPECT_EQ("Java_java_lang_String_copyValueOf___3CII", m->JniLongName());
1657 }
1658
1659 class ClassLinkerClassLoaderTest : public ClassLinkerTest {
1660 protected:
1661 // Verifies that the class identified by the given descriptor is loaded with
1662 // the expected_class_loader_obj when search from class_loader_to_search_obj.
1663 // 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)1664 void VerifyClassResolution(const std::string& descriptor,
1665 jobject class_loader_to_search_obj,
1666 jobject expected_class_loader_obj,
1667 bool should_find = true) {
1668 Thread* self = Thread::Current();
1669 ScopedObjectAccess soa(self);
1670 StackHandleScope<3> hs(self);
1671 Handle<mirror::ClassLoader> class_loader_to_search(
1672 hs.NewHandle(soa.Decode<mirror::ClassLoader>(class_loader_to_search_obj)));
1673
1674 Handle<mirror::Class> klass =
1675 hs.NewHandle(FindClass(descriptor.c_str(), class_loader_to_search));
1676
1677 if (!should_find) {
1678 if (self->IsExceptionPending()) {
1679 self->ClearException();
1680 }
1681 ASSERT_TRUE(klass == nullptr);
1682 } else if (expected_class_loader_obj == nullptr) {
1683 ASSERT_TRUE(ClassLinker::IsBootClassLoader(klass->GetClassLoader()));
1684 } else {
1685 ASSERT_TRUE(klass != nullptr) << descriptor;
1686 Handle<mirror::ClassLoader> expected_class_loader(
1687 hs.NewHandle(soa.Decode<mirror::ClassLoader>(expected_class_loader_obj)));
1688 ASSERT_OBJ_PTR_EQ(klass->GetClassLoader(), expected_class_loader.Get());
1689 }
1690 }
1691 };
1692
TEST_F(ClassLinkerClassLoaderTest,CreatePathClassLoader)1693 TEST_F(ClassLinkerClassLoaderTest, CreatePathClassLoader) {
1694 jobject class_loader_a = LoadDexInPathClassLoader("ForClassLoaderA", nullptr);
1695 VerifyClassResolution("LDefinedInA;", class_loader_a, class_loader_a);
1696 VerifyClassResolution("Ljava/lang/String;", class_loader_a, nullptr);
1697 VerifyClassResolution("LDefinedInB;", class_loader_a, nullptr, /*should_find=*/ false);
1698 }
1699
TEST_F(ClassLinkerClassLoaderTest,CreateDelegateLastClassLoader)1700 TEST_F(ClassLinkerClassLoaderTest, CreateDelegateLastClassLoader) {
1701 jobject class_loader_a = LoadDexInDelegateLastClassLoader("ForClassLoaderA", nullptr);
1702 VerifyClassResolution("LDefinedInA;", class_loader_a, class_loader_a);
1703 VerifyClassResolution("Ljava/lang/String;", class_loader_a, nullptr);
1704 VerifyClassResolution("LDefinedInB;", class_loader_a, nullptr, /*should_find=*/ false);
1705 }
1706
TEST_F(ClassLinkerClassLoaderTest,CreateClassLoaderChain)1707 TEST_F(ClassLinkerClassLoaderTest, CreateClassLoaderChain) {
1708 // The chain is
1709 // ClassLoaderA (PathClassLoader, defines: A, AB, AC, AD)
1710 // ^
1711 // |
1712 // ClassLoaderB (DelegateLastClassLoader, defines: B, AB, BC, BD)
1713 // ^
1714 // |
1715 // ClassLoaderC (PathClassLoader, defines: C, AC, BC, CD)
1716 // ^
1717 // |
1718 // ClassLoaderD (DelegateLastClassLoader, defines: D, AD, BD, CD)
1719
1720 jobject class_loader_a = LoadDexInPathClassLoader("ForClassLoaderA", nullptr);
1721 jobject class_loader_b = LoadDexInDelegateLastClassLoader("ForClassLoaderB", class_loader_a);
1722 jobject class_loader_c = LoadDexInPathClassLoader("ForClassLoaderC", class_loader_b);
1723 jobject class_loader_d = LoadDexInDelegateLastClassLoader("ForClassLoaderD", class_loader_c);
1724
1725 // Verify exclusive classes (present in only one class loader).
1726 VerifyClassResolution("LDefinedInD;", class_loader_d, class_loader_d);
1727 VerifyClassResolution("LDefinedInC;", class_loader_d, class_loader_c);
1728 VerifyClassResolution("LDefinedInB;", class_loader_d, class_loader_b);
1729 VerifyClassResolution("LDefinedInA;", class_loader_d, class_loader_a);
1730
1731 // Verify classes that are defined in multiple classloader.
1732
1733 // Classes defined in B should be found in B even if they are defined in A or C because
1734 // B is a DelegateLastClassLoader.
1735 VerifyClassResolution("LDefinedInAB;", class_loader_d, class_loader_b);
1736 VerifyClassResolution("LDefinedInABC;", class_loader_d, class_loader_b);
1737 VerifyClassResolution("LDefinedInBC;", class_loader_d, class_loader_b);
1738
1739 // Classes defined in D should be found in D even if they are defined in parent class loaders
1740 // as well because D is a DelegateLastClassLoader.
1741 VerifyClassResolution("LDefinedInAD;", class_loader_d, class_loader_d);
1742 VerifyClassResolution("LDefinedInBD;", class_loader_d, class_loader_d);
1743 VerifyClassResolution("LDefinedInCD;", class_loader_d, class_loader_d);
1744
1745
1746 // Classes not defined in the DelegateLastClassLoaders (i.e. D or B) should be found
1747 // in the top parent.
1748 VerifyClassResolution("LDefinedInAC;", class_loader_d, class_loader_a);
1749
1750 // Check that we don't find an undefined class.
1751 VerifyClassResolution("LNotDefined;", class_loader_d, nullptr, /*should_find=*/ false);
1752 }
1753
1754 } // namespace art
1755