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->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 = hs.NewHandle(FindClass(array_descriptor.c_str(), loader));
185 std::string temp;
186 EXPECT_STREQ(component_type.c_str(), array->GetComponentType()->GetDescriptor(&temp));
187 EXPECT_OBJ_PTR_EQ(loader.Get(), array->GetClassLoader());
188 EXPECT_EQ(kAccFinal | kAccAbstract, (array->GetAccessFlags() & (kAccFinal | kAccAbstract)));
189 AssertArrayClass(array_descriptor, array);
190 }
191
AssertArrayClass(const std::string & array_descriptor,Handle<mirror::Class> array)192 void AssertArrayClass(const std::string& array_descriptor, Handle<mirror::Class> array)
193 REQUIRES_SHARED(Locks::mutator_lock_) {
194 ASSERT_TRUE(array != nullptr);
195 ASSERT_TRUE(array->GetClass() != nullptr);
196 ASSERT_OBJ_PTR_EQ(array->GetClass(), array->GetClass()->GetClass());
197 EXPECT_TRUE(array->GetClass()->GetSuperClass() != nullptr);
198 std::string temp;
199 ASSERT_STREQ(array_descriptor.c_str(), array->GetDescriptor(&temp));
200 EXPECT_TRUE(array->GetSuperClass() != nullptr);
201 Thread* self = Thread::Current();
202 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(self, "Ljava/lang/Object;"),
203 array->GetSuperClass());
204 EXPECT_TRUE(array->HasSuperClass());
205 ASSERT_TRUE(array->GetComponentType() != nullptr);
206 ASSERT_GT(strlen(array->GetComponentType()->GetDescriptor(&temp)), 0U);
207 EXPECT_EQ(ClassStatus::kVisiblyInitialized, array->GetStatus());
208 EXPECT_FALSE(array->IsErroneous());
209 EXPECT_TRUE(array->IsLoaded());
210 EXPECT_TRUE(array->IsResolved());
211 EXPECT_FALSE(array->IsErroneousResolved());
212 EXPECT_TRUE(array->IsVerified());
213 EXPECT_TRUE(array->IsInitialized());
214 EXPECT_FALSE(array->IsArrayInstance());
215 EXPECT_TRUE(array->IsArrayClass());
216 EXPECT_FALSE(array->IsInterface());
217 EXPECT_EQ(array->GetComponentType()->IsPublic(), array->IsPublic());
218 EXPECT_TRUE(array->IsFinal());
219 EXPECT_FALSE(array->IsPrimitive());
220 EXPECT_FALSE(array->IsSynthetic());
221 EXPECT_EQ(0U, array->NumDirectMethods());
222 EXPECT_EQ(0U, array->NumVirtualMethods());
223 EXPECT_EQ(0U, array->NumInstanceFields());
224 EXPECT_EQ(0U, array->NumStaticFields());
225 EXPECT_EQ(2U, array->NumDirectInterfaces());
226 EXPECT_TRUE(array->ShouldHaveImt());
227 EXPECT_TRUE(array->ShouldHaveEmbeddedVTable());
228 EXPECT_EQ(2, array->GetIfTableCount());
229 ASSERT_TRUE(array->GetIfTable() != nullptr);
230 ObjPtr<mirror::Class> direct_interface0 = array->GetDirectInterface(0);
231 EXPECT_TRUE(direct_interface0 != nullptr);
232 EXPECT_STREQ(direct_interface0->GetDescriptor(&temp), "Ljava/lang/Cloneable;");
233 ObjPtr<mirror::Class> direct_interface1 = array->GetDirectInterface(1);
234 EXPECT_STREQ(direct_interface1->GetDescriptor(&temp), "Ljava/io/Serializable;");
235 EXPECT_OBJ_PTR_EQ(class_linker_->FindArrayClass(self, array->GetComponentType()), array.Get());
236
237 PointerSize pointer_size = class_linker_->GetImagePointerSize();
238 ObjPtr<mirror::Class> JavaLangObject =
239 class_linker_->FindSystemClass(self, "Ljava/lang/Object;");
240 ImTable* JavaLangObject_imt = JavaLangObject->GetImt(pointer_size);
241 // IMT of a array class should be shared with the IMT of the java.lag.Object
242 ASSERT_EQ(JavaLangObject_imt, array->GetImt(pointer_size));
243 }
244
AssertMethod(ArtMethod * method)245 void AssertMethod(ArtMethod* method) REQUIRES_SHARED(Locks::mutator_lock_) {
246 EXPECT_TRUE(method != nullptr);
247 EXPECT_TRUE(method->GetDeclaringClass() != nullptr);
248 EXPECT_TRUE(method->GetName() != nullptr);
249 EXPECT_TRUE(method->GetSignature() != Signature::NoSignature());
250 }
251
AssertField(ObjPtr<mirror::Class> klass,ArtField * field)252 void AssertField(ObjPtr<mirror::Class> klass, ArtField* field)
253 REQUIRES_SHARED(Locks::mutator_lock_) {
254 EXPECT_TRUE(field != nullptr);
255 EXPECT_OBJ_PTR_EQ(klass, field->GetDeclaringClass());
256 EXPECT_TRUE(field->GetName() != nullptr);
257 EXPECT_TRUE(field->ResolveType() != nullptr);
258 }
259
AssertClass(const std::string & descriptor,Handle<mirror::Class> klass)260 void AssertClass(const std::string& descriptor, Handle<mirror::Class> klass)
261 REQUIRES_SHARED(Locks::mutator_lock_) {
262 std::string temp;
263 EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor(&temp));
264 if (descriptor == "Ljava/lang/Object;") {
265 EXPECT_FALSE(klass->HasSuperClass());
266 } else {
267 EXPECT_TRUE(klass->HasSuperClass());
268 EXPECT_TRUE(klass->GetSuperClass() != nullptr);
269 }
270 EXPECT_TRUE(klass->GetClass() != nullptr);
271 EXPECT_OBJ_PTR_EQ(klass->GetClass(), klass->GetClass()->GetClass());
272 EXPECT_TRUE(klass->GetDexCache() != nullptr);
273 EXPECT_TRUE(klass->IsLoaded());
274 EXPECT_TRUE(klass->IsResolved());
275 EXPECT_FALSE(klass->IsErroneousResolved());
276 EXPECT_FALSE(klass->IsErroneous());
277 EXPECT_FALSE(klass->IsArrayClass());
278 EXPECT_TRUE(klass->GetComponentType() == nullptr);
279 EXPECT_TRUE(klass->IsInSamePackage(klass.Get()));
280 std::string temp2;
281 EXPECT_TRUE(mirror::Class::IsInSamePackage(klass->GetDescriptor(&temp),
282 klass->GetDescriptor(&temp2)));
283 if (klass->IsInterface()) {
284 EXPECT_TRUE(klass->IsAbstract());
285 // Check that all methods are direct and either static (<clinit> or a regular static method),
286 // or private.
287 for (ArtMethod& m : klass->GetDirectMethods(kRuntimePointerSize)) {
288 EXPECT_TRUE(m.IsStatic() || m.IsPrivate());
289 EXPECT_TRUE(m.IsDirect());
290 }
291 } else {
292 if (!klass->IsSynthetic()) {
293 EXPECT_NE(0U, klass->NumDirectMethods());
294 }
295 }
296 EXPECT_EQ(klass->IsInterface(), !klass->HasVTable());
297 ObjPtr<mirror::IfTable> iftable = klass->GetIfTable();
298 for (int i = 0; i < klass->GetIfTableCount(); i++) {
299 ObjPtr<mirror::Class> interface = iftable->GetInterface(i);
300 ASSERT_TRUE(interface != nullptr);
301 if (klass->IsInterface()) {
302 EXPECT_EQ(0U, iftable->GetMethodArrayCount(i));
303 } else {
304 EXPECT_EQ(interface->NumDeclaredVirtualMethods(), iftable->GetMethodArrayCount(i));
305 }
306 }
307 if (klass->IsAbstract()) {
308 EXPECT_FALSE(klass->IsFinal());
309 } else {
310 EXPECT_FALSE(klass->IsAnnotation());
311 }
312 if (klass->IsFinal()) {
313 EXPECT_FALSE(klass->IsAbstract());
314 EXPECT_FALSE(klass->IsAnnotation());
315 }
316 if (klass->IsAnnotation()) {
317 EXPECT_FALSE(klass->IsFinal());
318 EXPECT_TRUE(klass->IsAbstract());
319 }
320
321 EXPECT_FALSE(klass->IsPrimitive());
322 EXPECT_TRUE(klass->CanAccess(klass.Get()));
323
324 for (ArtMethod& method : klass->GetDirectMethods(kRuntimePointerSize)) {
325 AssertMethod(&method);
326 EXPECT_TRUE(method.IsDirect());
327 EXPECT_OBJ_PTR_EQ(klass.Get(), method.GetDeclaringClass());
328 }
329
330 for (ArtMethod& method : klass->GetDeclaredVirtualMethods(kRuntimePointerSize)) {
331 AssertMethod(&method);
332 EXPECT_FALSE(method.IsDirect());
333 EXPECT_OBJ_PTR_EQ(klass.Get(), method.GetDeclaringClass());
334 }
335
336 for (ArtMethod& method : klass->GetCopiedMethods(kRuntimePointerSize)) {
337 AssertMethod(&method);
338 EXPECT_FALSE(method.IsDirect());
339 EXPECT_TRUE(method.IsCopied());
340 EXPECT_TRUE(method.GetDeclaringClass()->IsInterface())
341 << "declaring class: " << method.GetDeclaringClass()->PrettyClass();
342 EXPECT_TRUE(method.GetDeclaringClass()->IsAssignableFrom(klass.Get()))
343 << "declaring class: " << method.GetDeclaringClass()->PrettyClass();
344 }
345
346 for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
347 ArtField* field = klass->GetInstanceField(i);
348 AssertField(klass.Get(), field);
349 EXPECT_FALSE(field->IsStatic());
350 }
351
352 for (size_t i = 0; i < klass->NumStaticFields(); i++) {
353 ArtField* field = klass->GetStaticField(i);
354 AssertField(klass.Get(), field);
355 EXPECT_TRUE(field->IsStatic());
356 }
357
358 // Confirm that all instances field offsets are packed together at the start.
359 EXPECT_GE(klass->NumInstanceFields(), klass->NumReferenceInstanceFields());
360 MemberOffset start_ref_offset = klass->GetFirstReferenceInstanceFieldOffset();
361 MemberOffset end_ref_offset(start_ref_offset.Uint32Value() +
362 klass->NumReferenceInstanceFields() *
363 sizeof(mirror::HeapReference<mirror::Object>));
364 MemberOffset current_ref_offset = start_ref_offset;
365 for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
366 ArtField* field = klass->GetInstanceField(i);
367 ObjPtr<mirror::Class> field_type = field->ResolveType();
368 ASSERT_TRUE(field_type != nullptr);
369 if (!field->IsPrimitiveType()) {
370 ASSERT_TRUE(!field_type->IsPrimitive());
371 ASSERT_EQ(current_ref_offset.Uint32Value(), field->GetOffset().Uint32Value());
372 if (current_ref_offset.Uint32Value() == end_ref_offset.Uint32Value()) {
373 // While Reference.referent is not primitive, the ClassLinker
374 // treats it as such so that the garbage collector won't scan it.
375 EXPECT_EQ(field->PrettyField(), "java.lang.Object java.lang.ref.Reference.referent");
376 } else {
377 current_ref_offset = MemberOffset(current_ref_offset.Uint32Value() +
378 sizeof(mirror::HeapReference<mirror::Object>));
379 }
380 } else {
381 if (field->GetOffset().Uint32Value() < end_ref_offset.Uint32Value()) {
382 // Shuffled before references.
383 ASSERT_LT(field->GetOffset().Uint32Value(), start_ref_offset.Uint32Value());
384 CHECK(!IsAligned<4>(field->GetOffset().Uint32Value()));
385 }
386 }
387 }
388 ASSERT_EQ(end_ref_offset.Uint32Value(), current_ref_offset.Uint32Value());
389
390 uint32_t total_num_reference_instance_fields = 0;
391 ObjPtr<mirror::Class> k = klass.Get();
392 while (k != nullptr) {
393 total_num_reference_instance_fields += k->NumReferenceInstanceFields();
394 k = k->GetSuperClass();
395 }
396 EXPECT_GE(total_num_reference_instance_fields, 1U); // Should always have Object's class.
397 if ((klass->GetReferenceInstanceOffsets() & mirror::Class::kVisitReferencesSlowpathMask) == 0 &&
398 klass->ShouldHaveEmbeddedVTable()) {
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)446 void VisitRoot(mirror::Object* root, [[maybe_unused]] const RootInfo& info) 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, name_), "name");
672 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, packages_), "packages");
673 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, parent_), "parent");
674 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, proxyCache_), "proxyCache");
675 }
676 };
677
678 struct ProxyOffsets : public CheckOffsets<mirror::Proxy> {
ProxyOffsetsart::ProxyOffsets679 ProxyOffsets() : CheckOffsets<mirror::Proxy>(false, "Ljava/lang/reflect/Proxy;") {
680 addOffset(OFFSETOF_MEMBER(mirror::Proxy, h_), "h");
681 }
682 };
683
684 struct DexCacheOffsets : public CheckOffsets<mirror::DexCache> {
DexCacheOffsetsart::DexCacheOffsets685 DexCacheOffsets() : CheckOffsets<mirror::DexCache>(false, "Ljava/lang/DexCache;") {
686 addOffset(OFFSETOF_MEMBER(mirror::DexCache, class_loader_), "classLoader");
687 addOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_file_), "dexFile");
688 addOffset(OFFSETOF_MEMBER(mirror::DexCache, location_), "location");
689 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_call_sites_), "resolvedCallSites");
690 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_), "resolvedFields");
691 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_array_), "resolvedFieldsArray");
692 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_method_types_), "resolvedMethodTypes");
693 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_method_types_array_),
694 "resolvedMethodTypesArray");
695 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_), "resolvedMethods");
696 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_array_), "resolvedMethodsArray");
697 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_), "resolvedTypes");
698 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_array_), "resolvedTypesArray");
699 addOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_), "strings");
700 addOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_array_), "stringsArray");
701 }
702 };
703
704 struct ReferenceOffsets : public CheckOffsets<mirror::Reference> {
ReferenceOffsetsart::ReferenceOffsets705 ReferenceOffsets() : CheckOffsets<mirror::Reference>(false, "Ljava/lang/ref/Reference;") {
706 addOffset(OFFSETOF_MEMBER(mirror::Reference, pending_next_), "pendingNext");
707 addOffset(OFFSETOF_MEMBER(mirror::Reference, queue_), "queue");
708 addOffset(OFFSETOF_MEMBER(mirror::Reference, queue_next_), "queueNext");
709 addOffset(OFFSETOF_MEMBER(mirror::Reference, referent_), "referent");
710 }
711 };
712
713 struct FinalizerReferenceOffsets : public CheckOffsets<mirror::FinalizerReference> {
FinalizerReferenceOffsetsart::FinalizerReferenceOffsets714 FinalizerReferenceOffsets() : CheckOffsets<mirror::FinalizerReference>(
715 false, "Ljava/lang/ref/FinalizerReference;") {
716 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, next_), "next");
717 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, prev_), "prev");
718 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, zombie_), "zombie");
719 }
720 };
721
722 struct AccessibleObjectOffsets : public CheckOffsets<mirror::AccessibleObject> {
AccessibleObjectOffsetsart::AccessibleObjectOffsets723 AccessibleObjectOffsets() : CheckOffsets<mirror::AccessibleObject>(
724 false, "Ljava/lang/reflect/AccessibleObject;") {
725 addOffset(mirror::AccessibleObject::FlagOffset().Uint32Value(), "override");
726 }
727 };
728
729 struct FieldOffsets : public CheckOffsets<mirror::Field> {
FieldOffsetsart::FieldOffsets730 FieldOffsets() : CheckOffsets<mirror::Field>(false, "Ljava/lang/reflect/Field;") {
731 addOffset(OFFSETOF_MEMBER(mirror::Field, access_flags_), "accessFlags");
732 addOffset(OFFSETOF_MEMBER(mirror::Field, art_field_index_), "artFieldIndex");
733 addOffset(OFFSETOF_MEMBER(mirror::Field, declaring_class_), "declaringClass");
734 addOffset(OFFSETOF_MEMBER(mirror::Field, offset_), "offset");
735 addOffset(OFFSETOF_MEMBER(mirror::Field, type_), "type");
736 }
737 };
738
739 struct ExecutableOffsets : public CheckOffsets<mirror::Executable> {
ExecutableOffsetsart::ExecutableOffsets740 ExecutableOffsets() : CheckOffsets<mirror::Executable>(
741 false, "Ljava/lang/reflect/Executable;") {
742 addOffset(OFFSETOF_MEMBER(mirror::Executable, access_flags_), "accessFlags");
743 addOffset(OFFSETOF_MEMBER(mirror::Executable, art_method_), "artMethod");
744 addOffset(OFFSETOF_MEMBER(mirror::Executable, declaring_class_), "declaringClass");
745 addOffset(OFFSETOF_MEMBER(mirror::Executable, declaring_class_of_overridden_method_),
746 "declaringClassOfOverriddenMethod");
747 addOffset(OFFSETOF_MEMBER(mirror::Executable, dex_method_index_), "dexMethodIndex");
748 addOffset(OFFSETOF_MEMBER(mirror::Executable, has_real_parameter_data_),
749 "hasRealParameterData");
750 addOffset(OFFSETOF_MEMBER(mirror::Executable, parameters_), "parameters");
751 }
752 };
753
754 struct MethodTypeOffsets : public CheckOffsets<mirror::MethodType> {
MethodTypeOffsetsart::MethodTypeOffsets755 MethodTypeOffsets() : CheckOffsets<mirror::MethodType>(
756 false, "Ljava/lang/invoke/MethodType;") {
757 addOffset(OFFSETOF_MEMBER(mirror::MethodType, form_), "form");
758 addOffset(OFFSETOF_MEMBER(mirror::MethodType, method_descriptor_), "methodDescriptor");
759 addOffset(OFFSETOF_MEMBER(mirror::MethodType, p_types_), "ptypes");
760 addOffset(OFFSETOF_MEMBER(mirror::MethodType, r_type_), "rtype");
761 addOffset(OFFSETOF_MEMBER(mirror::MethodType, wrap_alt_), "wrapAlt");
762 }
763 };
764
765 struct MethodHandleOffsets : public CheckOffsets<mirror::MethodHandle> {
MethodHandleOffsetsart::MethodHandleOffsets766 MethodHandleOffsets() : CheckOffsets<mirror::MethodHandle>(
767 false, "Ljava/lang/invoke/MethodHandle;") {
768 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, art_field_or_method_), "artFieldOrMethod");
769 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, as_type_cache_), "asTypeCache");
770 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, cached_spread_invoker_),
771 "cachedSpreadInvoker");
772 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, handle_kind_), "handleKind");
773 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, method_type_), "type");
774 }
775 };
776
777 struct MethodHandleImplOffsets : public CheckOffsets<mirror::MethodHandleImpl> {
MethodHandleImplOffsetsart::MethodHandleImplOffsets778 MethodHandleImplOffsets() : CheckOffsets<mirror::MethodHandleImpl>(
779 false, "Ljava/lang/invoke/MethodHandleImpl;") {
780 addOffset(OFFSETOF_MEMBER(mirror::MethodHandleImpl, target_class_or_info_),
781 "targetClassOrMethodHandleInfo");
782 }
783 };
784
785 struct MethodHandlesLookupOffsets : public CheckOffsets<mirror::MethodHandlesLookup> {
MethodHandlesLookupOffsetsart::MethodHandlesLookupOffsets786 MethodHandlesLookupOffsets() : CheckOffsets<mirror::MethodHandlesLookup>(
787 false, "Ljava/lang/invoke/MethodHandles$Lookup;") {
788 addOffset(OFFSETOF_MEMBER(mirror::MethodHandlesLookup, allowed_modes_), "allowedModes");
789 addOffset(OFFSETOF_MEMBER(mirror::MethodHandlesLookup, lookup_class_), "lookupClass");
790 }
791 };
792
793 struct EmulatedStackFrameOffsets : public CheckOffsets<mirror::EmulatedStackFrame> {
EmulatedStackFrameOffsetsart::EmulatedStackFrameOffsets794 EmulatedStackFrameOffsets() : CheckOffsets<mirror::EmulatedStackFrame>(
795 false, "Ldalvik/system/EmulatedStackFrame;") {
796 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, references_), "references");
797 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, stack_frame_), "stackFrame");
798 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, type_), "type");
799 }
800 };
801
802 struct CallSiteOffsets : public CheckOffsets<mirror::CallSite> {
CallSiteOffsetsart::CallSiteOffsets803 CallSiteOffsets() : CheckOffsets<mirror::CallSite>(
804 false, "Ljava/lang/invoke/CallSite;") {
805 addOffset(OFFSETOF_MEMBER(mirror::CallSite, target_), "target");
806 }
807 };
808
809 struct VarHandleOffsets : public CheckOffsets<mirror::VarHandle> {
VarHandleOffsetsart::VarHandleOffsets810 VarHandleOffsets() : CheckOffsets<mirror::VarHandle>(
811 false, "Ljava/lang/invoke/VarHandle;") {
812 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, access_modes_bit_mask_), "accessModesBitMask");
813 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, coordinate_type0_), "coordinateType0");
814 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, coordinate_type1_), "coordinateType1");
815 addOffset(OFFSETOF_MEMBER(mirror::VarHandle, var_type_), "varType");
816 }
817 };
818
819 struct FieldVarHandleOffsets : public CheckOffsets<mirror::FieldVarHandle> {
FieldVarHandleOffsetsart::FieldVarHandleOffsets820 FieldVarHandleOffsets() : CheckOffsets<mirror::FieldVarHandle>(
821 false, "Ljava/lang/invoke/FieldVarHandle;") {
822 addOffset(OFFSETOF_MEMBER(mirror::FieldVarHandle, art_field_), "artField");
823 }
824 };
825
826 struct StaticFieldVarHandleOffsets : public CheckOffsets<mirror::StaticFieldVarHandle> {
StaticFieldVarHandleOffsetsart::StaticFieldVarHandleOffsets827 StaticFieldVarHandleOffsets() : CheckOffsets<mirror::StaticFieldVarHandle>(
828 false, "Ljava/lang/invoke/StaticFieldVarHandle;") {
829 addOffset(OFFSETOF_MEMBER(mirror::StaticFieldVarHandle, declaring_class_), "declaringClass");
830 }
831 };
832
833 struct ArrayElementVarHandleOffsets : public CheckOffsets<mirror::ArrayElementVarHandle> {
ArrayElementVarHandleOffsetsart::ArrayElementVarHandleOffsets834 ArrayElementVarHandleOffsets() : CheckOffsets<mirror::ArrayElementVarHandle>(
835 false, "Ljava/lang/invoke/ArrayElementVarHandle;") {
836 }
837 };
838
839 struct ByteArrayViewVarHandleOffsets : public CheckOffsets<mirror::ByteArrayViewVarHandle> {
ByteArrayViewVarHandleOffsetsart::ByteArrayViewVarHandleOffsets840 ByteArrayViewVarHandleOffsets() : CheckOffsets<mirror::ByteArrayViewVarHandle>(
841 false, "Ljava/lang/invoke/ByteArrayViewVarHandle;") {
842 addOffset(OFFSETOF_MEMBER(mirror::ByteArrayViewVarHandle, native_byte_order_),
843 "nativeByteOrder");
844 }
845 };
846
847 struct ByteBufferViewVarHandleOffsets : public CheckOffsets<mirror::ByteBufferViewVarHandle> {
ByteBufferViewVarHandleOffsetsart::ByteBufferViewVarHandleOffsets848 ByteBufferViewVarHandleOffsets() : CheckOffsets<mirror::ByteBufferViewVarHandle>(
849 false, "Ljava/lang/invoke/ByteBufferViewVarHandle;") {
850 addOffset(OFFSETOF_MEMBER(mirror::ByteBufferViewVarHandle, native_byte_order_),
851 "nativeByteOrder");
852 }
853 };
854
855 // C++ fields must exactly match the fields in the Java classes. If this fails,
856 // reorder the fields in the C++ class. Managed class fields are ordered by
857 // ClassLinker::LinkFieldsHelper::LinkFields.
TEST_F(ClassLinkerTest,ValidateFieldOrderOfJavaCppUnionClasses)858 TEST_F(ClassLinkerTest, ValidateFieldOrderOfJavaCppUnionClasses) {
859 ScopedObjectAccess soa(Thread::Current());
860 EXPECT_TRUE(ObjectOffsets().Check());
861 EXPECT_TRUE(ClassOffsets().Check());
862 EXPECT_TRUE(ClassExtOffsets().Check());
863 EXPECT_TRUE(StringOffsets().Check());
864 EXPECT_TRUE(ThrowableOffsets().Check());
865 EXPECT_TRUE(StackTraceElementOffsets().Check());
866 EXPECT_TRUE(ClassLoaderOffsets().Check());
867 EXPECT_TRUE(ProxyOffsets().Check());
868 EXPECT_TRUE(DexCacheOffsets().Check());
869 EXPECT_TRUE(ReferenceOffsets().Check());
870 EXPECT_TRUE(FinalizerReferenceOffsets().Check());
871 EXPECT_TRUE(AccessibleObjectOffsets().Check());
872 EXPECT_TRUE(FieldOffsets().Check());
873 EXPECT_TRUE(ExecutableOffsets().Check());
874 EXPECT_TRUE(MethodTypeOffsets().Check());
875 EXPECT_TRUE(MethodHandleOffsets().Check());
876 EXPECT_TRUE(MethodHandleImplOffsets().Check());
877 EXPECT_TRUE(MethodHandlesLookupOffsets().Check());
878 EXPECT_TRUE(EmulatedStackFrameOffsets().Check());
879 EXPECT_TRUE(CallSiteOffsets().Check());
880 EXPECT_TRUE(VarHandleOffsets().Check());
881 EXPECT_TRUE(FieldVarHandleOffsets().Check());
882 EXPECT_TRUE(ArrayElementVarHandleOffsets().Check());
883 EXPECT_TRUE(ByteArrayViewVarHandleOffsets().Check());
884 EXPECT_TRUE(ByteBufferViewVarHandleOffsets().Check());
885 EXPECT_TRUE(StackFrameInfoOffsets().Check());
886 }
887
TEST_F(ClassLinkerTest,FindClassNonexistent)888 TEST_F(ClassLinkerTest, FindClassNonexistent) {
889 ScopedObjectAccess soa(Thread::Current());
890 AssertNonExistentClass("NoSuchClass;");
891 AssertNonExistentClass("LNoSuchClass;");
892 }
893
TEST_F(ClassLinkerTest,GetDexFiles)894 TEST_F(ClassLinkerTest, GetDexFiles) {
895 ScopedObjectAccess soa(Thread::Current());
896
897 jobject jclass_loader = LoadDex("Nested");
898 std::vector<const DexFile*> dex_files(GetDexFiles(jclass_loader));
899 ASSERT_EQ(dex_files.size(), 1U);
900 EXPECT_TRUE(dex_files[0]->GetLocation().ends_with("Nested.jar"));
901
902 jobject jclass_loader2 = LoadDex("MultiDex");
903 std::vector<const DexFile*> dex_files2(GetDexFiles(jclass_loader2));
904 ASSERT_EQ(dex_files2.size(), 2U);
905 EXPECT_TRUE(dex_files2[0]->GetLocation().ends_with("MultiDex.jar"));
906 }
907
TEST_F(ClassLinkerTest,FindClassNested)908 TEST_F(ClassLinkerTest, FindClassNested) {
909 ScopedObjectAccess soa(Thread::Current());
910 StackHandleScope<1> hs(soa.Self());
911 Handle<mirror::ClassLoader> class_loader(
912 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Nested"))));
913
914 ObjPtr<mirror::Class> outer = FindClass("LNested;", class_loader);
915 ASSERT_TRUE(outer != nullptr);
916 EXPECT_EQ(0U, outer->NumVirtualMethods());
917 EXPECT_EQ(1U, outer->NumDirectMethods());
918
919 ObjPtr<mirror::Class> inner = FindClass("LNested$Inner;", class_loader);
920 ASSERT_TRUE(inner != nullptr);
921 EXPECT_EQ(0U, inner->NumVirtualMethods());
922 EXPECT_EQ(1U, inner->NumDirectMethods());
923 }
924
TEST_F(ClassLinkerTest,FindClass_Primitives)925 TEST_F(ClassLinkerTest, FindClass_Primitives) {
926 ScopedObjectAccess soa(Thread::Current());
927 const std::string expected("BCDFIJSZV");
928 for (int ch = 1; ch < 256; ++ch) {
929 std::string descriptor;
930 descriptor.push_back(ch);
931 if (expected.find(ch) == std::string::npos) {
932 AssertNonExistentClass(descriptor);
933 } else {
934 AssertPrimitiveClass(descriptor);
935 }
936 }
937 }
938
TEST_F(ClassLinkerTest,FindClass)939 TEST_F(ClassLinkerTest, FindClass) {
940 ScopedObjectAccess soa(Thread::Current());
941 StackHandleScope<2> hs(soa.Self());
942 Handle<mirror::Class> JavaLangObject = hs.NewHandle(
943 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"));
944 AssertObjectClass(JavaLangObject.Get());
945
946 Handle<mirror::ClassLoader> class_loader(
947 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
948 AssertNonExistentClass("LMyClass;");
949 ObjPtr<mirror::Class> MyClass = FindClass("LMyClass;", class_loader);
950 ASSERT_TRUE(MyClass != nullptr);
951 ASSERT_TRUE(MyClass->GetClass() != nullptr);
952 ASSERT_OBJ_PTR_EQ(MyClass->GetClass(), MyClass->GetClass()->GetClass());
953 EXPECT_OBJ_PTR_EQ(JavaLangObject.Get(), MyClass->GetClass()->GetSuperClass());
954 std::string temp;
955 ASSERT_STREQ(MyClass->GetDescriptor(&temp), "LMyClass;");
956 EXPECT_OBJ_PTR_EQ(MyClass->GetSuperClass(), JavaLangObject.Get());
957 EXPECT_TRUE(MyClass->HasSuperClass());
958 EXPECT_OBJ_PTR_EQ(class_loader.Get(), MyClass->GetClassLoader());
959 EXPECT_EQ(ClassStatus::kResolved, MyClass->GetStatus());
960 EXPECT_FALSE(MyClass->IsErroneous());
961 EXPECT_TRUE(MyClass->IsLoaded());
962 EXPECT_TRUE(MyClass->IsResolved());
963 EXPECT_FALSE(MyClass->IsErroneousResolved());
964 EXPECT_FALSE(MyClass->IsVerified());
965 EXPECT_FALSE(MyClass->IsInitialized());
966 EXPECT_FALSE(MyClass->IsArrayInstance());
967 EXPECT_FALSE(MyClass->IsArrayClass());
968 EXPECT_TRUE(MyClass->GetComponentType() == nullptr);
969 EXPECT_FALSE(MyClass->IsInterface());
970 EXPECT_FALSE(MyClass->IsPublic());
971 EXPECT_FALSE(MyClass->IsFinal());
972 EXPECT_FALSE(MyClass->IsPrimitive());
973 EXPECT_FALSE(MyClass->IsSynthetic());
974 EXPECT_EQ(1U, MyClass->NumDirectMethods());
975 EXPECT_EQ(0U, MyClass->NumVirtualMethods());
976 EXPECT_EQ(0U, MyClass->NumInstanceFields());
977 EXPECT_EQ(0U, MyClass->NumStaticFields());
978 EXPECT_EQ(0U, MyClass->NumDirectInterfaces());
979
980 EXPECT_OBJ_PTR_EQ(JavaLangObject->GetClass()->GetClass(), MyClass->GetClass()->GetClass());
981
982 // created by class_linker
983 AssertArrayClass("[C", "C", nullptr);
984 AssertArrayClass("[Ljava/lang/Object;", "Ljava/lang/Object;", nullptr);
985 // synthesized on the fly
986 AssertArrayClass("[[C", "[C", nullptr);
987 AssertArrayClass("[[[LMyClass;", "[[LMyClass;", class_loader.Get());
988 // or not available at all
989 AssertNonExistentClass("[[[[LNonExistentClass;");
990 }
991
TEST_F(ClassLinkerTest,LookupResolvedType)992 TEST_F(ClassLinkerTest, LookupResolvedType) {
993 ScopedObjectAccess soa(Thread::Current());
994 StackHandleScope<1> hs(soa.Self());
995 Handle<mirror::ClassLoader> class_loader(
996 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
997 AssertNonExistentClass("LMyClass;");
998 ObjPtr<mirror::Class> klass = FindClass("LMyClass;", class_loader);
999 dex::TypeIndex type_idx = klass->GetClassDef()->class_idx_;
1000 ObjPtr<mirror::DexCache> dex_cache = klass->GetDexCache();
1001 EXPECT_OBJ_PTR_EQ(
1002 class_linker_->LookupResolvedType(type_idx, dex_cache, class_loader.Get()),
1003 klass);
1004 // Zero out the resolved type and make sure LookupResolvedType still finds it.
1005 dex_cache->ClearResolvedType(type_idx);
1006 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
1007 EXPECT_OBJ_PTR_EQ(
1008 class_linker_->LookupResolvedType(type_idx, dex_cache, class_loader.Get()),
1009 klass);
1010 }
1011
TEST_F(ClassLinkerTest,LookupResolvedTypeArray)1012 TEST_F(ClassLinkerTest, LookupResolvedTypeArray) {
1013 ScopedObjectAccess soa(Thread::Current());
1014 StackHandleScope<2> hs(soa.Self());
1015 Handle<mirror::ClassLoader> class_loader(
1016 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("AllFields"))));
1017 // Get the AllFields class for the dex cache and dex file.
1018 ObjPtr<mirror::Class> all_fields_klass = FindClass("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 = FindClass("[Ljava/lang/Object;", class_loader);
1031 ASSERT_TRUE(array_klass != nullptr);
1032 // Test that LookupResolvedType() finds the array class.
1033 EXPECT_OBJ_PTR_EQ(
1034 class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()),
1035 array_klass);
1036 // Zero out the resolved type and make sure LookupResolvedType() still finds it.
1037 dex_cache->ClearResolvedType(array_idx);
1038 EXPECT_TRUE(dex_cache->GetResolvedType(array_idx) == nullptr);
1039 EXPECT_OBJ_PTR_EQ(
1040 class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()),
1041 array_klass);
1042 }
1043
TEST_F(ClassLinkerTest,LookupResolvedTypeErroneousInit)1044 TEST_F(ClassLinkerTest, LookupResolvedTypeErroneousInit) {
1045 ScopedObjectAccess soa(Thread::Current());
1046 StackHandleScope<3> hs(soa.Self());
1047 Handle<mirror::ClassLoader> class_loader(
1048 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("ErroneousInit"))));
1049 AssertNonExistentClass("LErroneousInit;");
1050 Handle<mirror::Class> klass = hs.NewHandle(FindClass("LErroneousInit;", class_loader));
1051 ASSERT_TRUE(klass != nullptr);
1052 dex::TypeIndex type_idx = klass->GetClassDef()->class_idx_;
1053 Handle<mirror::DexCache> dex_cache = hs.NewHandle(klass->GetDexCache());
1054 EXPECT_OBJ_PTR_EQ(
1055 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1056 klass.Get());
1057 // Zero out the resolved type and make sure LookupResolvedType still finds it.
1058 dex_cache->ClearResolvedType(type_idx);
1059 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
1060 EXPECT_OBJ_PTR_EQ(
1061 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1062 klass.Get());
1063 // Force initialization to turn the class erroneous.
1064 bool initialized = class_linker_->EnsureInitialized(soa.Self(),
1065 klass,
1066 /* can_init_fields= */ true,
1067 /* can_init_parents= */ true);
1068 EXPECT_FALSE(initialized);
1069 EXPECT_TRUE(soa.Self()->IsExceptionPending());
1070 soa.Self()->ClearException();
1071 // Check that the LookupResolvedType() can still find the resolved type.
1072 EXPECT_OBJ_PTR_EQ(
1073 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1074 klass.Get());
1075 // Zero out the resolved type and make sure LookupResolvedType() still finds it.
1076 dex_cache->ClearResolvedType(type_idx);
1077 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
1078 EXPECT_OBJ_PTR_EQ(
1079 class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
1080 klass.Get());
1081 }
1082
TEST_F(ClassLinkerTest,LibCore)1083 TEST_F(ClassLinkerTest, LibCore) {
1084 ScopedObjectAccess soa(Thread::Current());
1085 ASSERT_TRUE(java_lang_dex_file_ != nullptr);
1086 AssertDexFile(*java_lang_dex_file_, nullptr);
1087 }
1088
1089 // The first reference array element must be a multiple of 4 bytes from the
1090 // start of the object
TEST_F(ClassLinkerTest,ValidateObjectArrayElementsOffset)1091 TEST_F(ClassLinkerTest, ValidateObjectArrayElementsOffset) {
1092 ScopedObjectAccess soa(Thread::Current());
1093 ObjPtr<mirror::Class> array_class =
1094 class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
1095 ObjPtr<mirror::ObjectArray<mirror::String>> array =
1096 mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), array_class, 0);
1097 uintptr_t data_offset =
1098 reinterpret_cast<uintptr_t>(array->GetRawData(sizeof(mirror::HeapReference<mirror::String>),
1099 0));
1100 if (sizeof(mirror::HeapReference<mirror::String>) == sizeof(int32_t)) {
1101 EXPECT_TRUE(IsAligned<4>(data_offset)); // Check 4 byte alignment.
1102 } else {
1103 EXPECT_TRUE(IsAligned<8>(data_offset)); // Check 8 byte alignment.
1104 }
1105 }
1106
TEST_F(ClassLinkerTest,ValidatePrimitiveArrayElementsOffset)1107 TEST_F(ClassLinkerTest, ValidatePrimitiveArrayElementsOffset) {
1108 ScopedObjectAccess soa(Thread::Current());
1109 StackHandleScope<5> hs(soa.Self());
1110 Handle<mirror::LongArray> long_array(hs.NewHandle(mirror::LongArray::Alloc(soa.Self(), 0)));
1111 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[J"), long_array->GetClass());
1112 uintptr_t data_offset = reinterpret_cast<uintptr_t>(long_array->GetData());
1113 EXPECT_TRUE(IsAligned<8>(data_offset)); // Longs require 8 byte alignment
1114
1115 Handle<mirror::DoubleArray> double_array(hs.NewHandle(mirror::DoubleArray::Alloc(soa.Self(), 0)));
1116 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[D"), double_array->GetClass());
1117 data_offset = reinterpret_cast<uintptr_t>(double_array->GetData());
1118 EXPECT_TRUE(IsAligned<8>(data_offset)); // Doubles require 8 byte alignment
1119
1120 Handle<mirror::IntArray> int_array(hs.NewHandle(mirror::IntArray::Alloc(soa.Self(), 0)));
1121 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[I"), int_array->GetClass());
1122 data_offset = reinterpret_cast<uintptr_t>(int_array->GetData());
1123 EXPECT_TRUE(IsAligned<4>(data_offset)); // Ints require 4 byte alignment
1124
1125 Handle<mirror::CharArray> char_array(hs.NewHandle(mirror::CharArray::Alloc(soa.Self(), 0)));
1126 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[C"), char_array->GetClass());
1127 data_offset = reinterpret_cast<uintptr_t>(char_array->GetData());
1128 EXPECT_TRUE(IsAligned<2>(data_offset)); // Chars require 2 byte alignment
1129
1130 Handle<mirror::ShortArray> short_array(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 0)));
1131 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "[S"), short_array->GetClass());
1132 data_offset = reinterpret_cast<uintptr_t>(short_array->GetData());
1133 EXPECT_TRUE(IsAligned<2>(data_offset)); // Shorts require 2 byte alignment
1134
1135 // Take it as given that bytes and booleans have byte alignment
1136 }
1137
TEST_F(ClassLinkerTest,ValidateBoxedTypes)1138 TEST_F(ClassLinkerTest, ValidateBoxedTypes) {
1139 // Validate that the "value" field is always the 0th field in each of java.lang's box classes.
1140 // This lets UnboxPrimitive avoid searching for the field by name at runtime.
1141 ScopedObjectAccess soa(Thread::Current());
1142 ScopedNullHandle<mirror::ClassLoader> class_loader;
1143 ObjPtr<mirror::Class> c;
1144 c = FindClass("Ljava/lang/Boolean;", class_loader);
1145 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1146 c = FindClass("Ljava/lang/Byte;", class_loader);
1147 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1148 c = FindClass("Ljava/lang/Character;", class_loader);
1149 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1150 c = FindClass("Ljava/lang/Double;", class_loader);
1151 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1152 c = FindClass("Ljava/lang/Float;", class_loader);
1153 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1154 c = FindClass("Ljava/lang/Integer;", class_loader);
1155 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1156 c = FindClass("Ljava/lang/Long;", class_loader);
1157 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1158 c = FindClass("Ljava/lang/Short;", class_loader);
1159 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1160 }
1161
TEST_F(ClassLinkerTest,TwoClassLoadersOneClass)1162 TEST_F(ClassLinkerTest, TwoClassLoadersOneClass) {
1163 ScopedObjectAccess soa(Thread::Current());
1164 StackHandleScope<3> hs(soa.Self());
1165 Handle<mirror::ClassLoader> class_loader_1(
1166 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
1167 Handle<mirror::ClassLoader> class_loader_2(
1168 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
1169 Handle<mirror::Class> MyClass_1 = hs.NewHandle(FindClass("LMyClass;", class_loader_1));
1170 ObjPtr<mirror::Class> MyClass_2 = FindClass("LMyClass;", class_loader_2);
1171 EXPECT_TRUE(MyClass_1 != nullptr);
1172 EXPECT_TRUE(MyClass_2 != nullptr);
1173 EXPECT_OBJ_PTR_NE(MyClass_1.Get(), MyClass_2);
1174 }
1175
TEST_F(ClassLinkerTest,StaticFields)1176 TEST_F(ClassLinkerTest, StaticFields) {
1177 ScopedObjectAccess soa(Thread::Current());
1178 StackHandleScope<2> hs(soa.Self());
1179 Handle<mirror::ClassLoader> class_loader(
1180 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1181 Handle<mirror::Class> statics = hs.NewHandle(FindClass("LStatics;", class_loader));
1182 class_linker_->EnsureInitialized(soa.Self(), statics, true, true);
1183
1184 // Static final primitives that are initialized by a compile-time constant
1185 // expression resolve to a copy of a constant value from the constant pool.
1186 // So <clinit> should be null.
1187 ArtMethod* clinit = statics->FindClassMethod("<clinit>", "()V", kRuntimePointerSize);
1188 EXPECT_TRUE(clinit == nullptr);
1189
1190 EXPECT_EQ(9U, statics->NumStaticFields());
1191
1192 ArtField* s0 = statics->FindStaticField("s0", "Z");
1193 EXPECT_EQ(s0->GetTypeAsPrimitiveType(), Primitive::kPrimBoolean);
1194 EXPECT_EQ(true, s0->GetBoolean(statics.Get()));
1195 s0->SetBoolean<false>(statics.Get(), false);
1196
1197 ArtField* s1 = statics->FindStaticField("s1", "B");
1198 EXPECT_EQ(s1->GetTypeAsPrimitiveType(), Primitive::kPrimByte);
1199 EXPECT_EQ(5, s1->GetByte(statics.Get()));
1200 s1->SetByte<false>(statics.Get(), 6);
1201
1202 ArtField* s2 = statics->FindStaticField("s2", "C");
1203 EXPECT_EQ(s2->GetTypeAsPrimitiveType(), Primitive::kPrimChar);
1204 EXPECT_EQ('a', s2->GetChar(statics.Get()));
1205 s2->SetChar<false>(statics.Get(), 'b');
1206
1207 ArtField* s3 = statics->FindStaticField("s3", "S");
1208 EXPECT_EQ(s3->GetTypeAsPrimitiveType(), Primitive::kPrimShort);
1209 EXPECT_EQ(-536, s3->GetShort(statics.Get()));
1210 s3->SetShort<false>(statics.Get(), -535);
1211
1212 ArtField* s4 = statics->FindStaticField("s4", "I");
1213 EXPECT_EQ(s4->GetTypeAsPrimitiveType(), Primitive::kPrimInt);
1214 EXPECT_EQ(2000000000, s4->GetInt(statics.Get()));
1215 s4->SetInt<false>(statics.Get(), 2000000001);
1216
1217 ArtField* s5 = statics->FindStaticField("s5", "J");
1218 EXPECT_EQ(s5->GetTypeAsPrimitiveType(), Primitive::kPrimLong);
1219 EXPECT_EQ(0x1234567890abcdefLL, s5->GetLong(statics.Get()));
1220 s5->SetLong<false>(statics.Get(), INT64_C(0x34567890abcdef12));
1221
1222 ArtField* s6 = statics->FindStaticField("s6", "F");
1223 EXPECT_EQ(s6->GetTypeAsPrimitiveType(), Primitive::kPrimFloat);
1224 EXPECT_DOUBLE_EQ(0.5, s6->GetFloat(statics.Get()));
1225 s6->SetFloat<false>(statics.Get(), 0.75);
1226
1227 ArtField* s7 = statics->FindStaticField("s7", "D");
1228 EXPECT_EQ(s7->GetTypeAsPrimitiveType(), Primitive::kPrimDouble);
1229 EXPECT_DOUBLE_EQ(16777217.0, s7->GetDouble(statics.Get()));
1230 s7->SetDouble<false>(statics.Get(), 16777219);
1231
1232 ArtField* s8 = statics->FindStaticField("s8", "Ljava/lang/String;");
1233 EXPECT_EQ(s8->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
1234 EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("android"));
1235 ObjPtr<mirror::String> str_value = mirror::String::AllocFromModifiedUtf8(soa.Self(), "robot");
1236 s8->SetObject<false>(s8->GetDeclaringClass(), str_value);
1237
1238 // TODO: Remove EXPECT_FALSE when GCC can handle EXPECT_EQ
1239 // http://code.google.com/p/googletest/issues/detail?id=322
1240 EXPECT_FALSE(s0->GetBoolean(statics.Get()));
1241 EXPECT_EQ(6, s1->GetByte(statics.Get()));
1242 EXPECT_EQ('b', s2->GetChar(statics.Get()));
1243 EXPECT_EQ(-535, s3->GetShort(statics.Get()));
1244 EXPECT_EQ(2000000001, s4->GetInt(statics.Get()));
1245 EXPECT_EQ(INT64_C(0x34567890abcdef12), s5->GetLong(statics.Get()));
1246 EXPECT_FLOAT_EQ(0.75, s6->GetFloat(statics.Get()));
1247 EXPECT_DOUBLE_EQ(16777219.0, s7->GetDouble(statics.Get()));
1248 EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("robot"));
1249 }
1250
TEST_F(ClassLinkerTest,Interfaces)1251 TEST_F(ClassLinkerTest, Interfaces) {
1252 ScopedObjectAccess soa(Thread::Current());
1253 StackHandleScope<6> hs(soa.Self());
1254 Handle<mirror::ClassLoader> class_loader(
1255 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Interfaces"))));
1256 Handle<mirror::Class> I = hs.NewHandle(FindClass("LInterfaces$I;", class_loader));
1257 Handle<mirror::Class> J = hs.NewHandle(FindClass("LInterfaces$J;", class_loader));
1258 Handle<mirror::Class> K = hs.NewHandle(FindClass("LInterfaces$K;", class_loader));
1259 Handle<mirror::Class> A = hs.NewHandle(FindClass("LInterfaces$A;", class_loader));
1260 Handle<mirror::Class> B = hs.NewHandle(FindClass("LInterfaces$B;", class_loader));
1261 EXPECT_TRUE(I->IsAssignableFrom(A.Get()));
1262 EXPECT_TRUE(J->IsAssignableFrom(A.Get()));
1263 EXPECT_TRUE(J->IsAssignableFrom(K.Get()));
1264 EXPECT_TRUE(K->IsAssignableFrom(B.Get()));
1265 EXPECT_TRUE(J->IsAssignableFrom(B.Get()));
1266
1267 const std::string_view void_sig("()V");
1268 ArtMethod* Ii = I->FindClassMethod("i", void_sig, kRuntimePointerSize);
1269 ArtMethod* Jj1 = J->FindClassMethod("j1", void_sig, kRuntimePointerSize);
1270 ArtMethod* Jj2 = J->FindClassMethod("j2", void_sig, kRuntimePointerSize);
1271 ArtMethod* Kj1 = K->FindInterfaceMethod("j1", void_sig, kRuntimePointerSize);
1272 ArtMethod* Kj2 = K->FindInterfaceMethod("j2", void_sig, kRuntimePointerSize);
1273 ArtMethod* Kk = K->FindInterfaceMethod("k", void_sig, kRuntimePointerSize);
1274 ArtMethod* Ai = A->FindClassMethod("i", void_sig, kRuntimePointerSize);
1275 ArtMethod* Aj1 = A->FindClassMethod("j1", void_sig, kRuntimePointerSize);
1276 ArtMethod* Aj2 = A->FindClassMethod("j2", void_sig, kRuntimePointerSize);
1277 ASSERT_TRUE(Ii != nullptr);
1278 ASSERT_FALSE(Ii->IsDirect());
1279 ASSERT_TRUE(Jj1 != nullptr);
1280 ASSERT_FALSE(Jj1->IsDirect());
1281 ASSERT_TRUE(Jj2 != nullptr);
1282 ASSERT_FALSE(Jj2->IsDirect());
1283 ASSERT_TRUE(Kj1 != nullptr);
1284 ASSERT_TRUE(Kj2 != nullptr);
1285 ASSERT_TRUE(Kk != nullptr);
1286 ASSERT_TRUE(Ai != nullptr);
1287 ASSERT_FALSE(Ai->IsDirect());
1288 ASSERT_TRUE(Aj1 != nullptr);
1289 ASSERT_FALSE(Aj1->IsDirect());
1290 ASSERT_TRUE(Aj2 != nullptr);
1291 ASSERT_FALSE(Aj2->IsDirect());
1292 EXPECT_NE(Ii, Ai);
1293 EXPECT_NE(Jj1, Aj1);
1294 EXPECT_NE(Jj2, Aj2);
1295 EXPECT_EQ(Kj1, Jj1);
1296 EXPECT_EQ(Kj2, Jj2);
1297 EXPECT_EQ(Ai, A->FindVirtualMethodForInterface(Ii, kRuntimePointerSize));
1298 EXPECT_EQ(Aj1, A->FindVirtualMethodForInterface(Jj1, kRuntimePointerSize));
1299 EXPECT_EQ(Aj2, A->FindVirtualMethodForInterface(Jj2, kRuntimePointerSize));
1300 EXPECT_EQ(Ai, A->FindVirtualMethodForVirtualOrInterface(Ii, kRuntimePointerSize));
1301 EXPECT_EQ(Aj1, A->FindVirtualMethodForVirtualOrInterface(Jj1, kRuntimePointerSize));
1302 EXPECT_EQ(Aj2, A->FindVirtualMethodForVirtualOrInterface(Jj2, kRuntimePointerSize));
1303
1304 ArtField* Afoo = A->FindStaticField("foo", "Ljava/lang/String;");
1305 ArtField* Bfoo = B->FindStaticField("foo", "Ljava/lang/String;");
1306 ArtField* Jfoo = J->FindStaticField("foo", "Ljava/lang/String;");
1307 ArtField* Kfoo = K->FindStaticField("foo", "Ljava/lang/String;");
1308 ASSERT_TRUE(Afoo != nullptr);
1309 EXPECT_EQ(Afoo, Bfoo);
1310 EXPECT_EQ(Afoo, Jfoo);
1311 EXPECT_EQ(Afoo, Kfoo);
1312 }
1313
TEST_F(ClassLinkerTest,ResolveVerifyAndClinit)1314 TEST_F(ClassLinkerTest, ResolveVerifyAndClinit) {
1315 // pretend we are trying to get the static storage for the StaticsFromCode class.
1316
1317 // case 1, get the uninitialized storage from StaticsFromCode.<clinit>
1318 // case 2, get the initialized storage from StaticsFromCode.getS0
1319
1320 ScopedObjectAccess soa(Thread::Current());
1321 jobject jclass_loader = LoadDex("StaticsFromCode");
1322 const DexFile* dex_file = GetFirstDexFile(jclass_loader);
1323 StackHandleScope<1> hs(soa.Self());
1324 Handle<mirror::ClassLoader> class_loader(
1325 hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
1326 ObjPtr<mirror::Class> klass = FindClass("LStaticsFromCode;", class_loader);
1327 ArtMethod* clinit = klass->FindClassInitializer(kRuntimePointerSize);
1328 ArtMethod* getS0 =
1329 klass->FindClassMethod("getS0", "()Ljava/lang/Object;", kRuntimePointerSize);
1330 ASSERT_TRUE(getS0 != nullptr);
1331 ASSERT_TRUE(getS0->IsStatic());
1332 const dex::TypeId* type_id = dex_file->FindTypeId("LStaticsFromCode;");
1333 ASSERT_TRUE(type_id != nullptr);
1334 dex::TypeIndex type_idx = dex_file->GetIndexForTypeId(*type_id);
1335 ObjPtr<mirror::Class> uninit = ResolveVerifyAndClinit(type_idx,
1336 clinit,
1337 soa.Self(),
1338 /* can_run_clinit= */ true,
1339 /* verify_access= */ false);
1340 EXPECT_TRUE(uninit != nullptr);
1341 EXPECT_FALSE(uninit->IsInitialized());
1342 ObjPtr<mirror::Class> init = ResolveVerifyAndClinit(type_idx,
1343 getS0,
1344 soa.Self(),
1345 /* can_run_clinit= */ true,
1346 /* verify_access= */ false);
1347 EXPECT_TRUE(init != nullptr);
1348 EXPECT_TRUE(init->IsInitialized());
1349 }
1350
TEST_F(ClassLinkerTest,ErroneousClass)1351 TEST_F(ClassLinkerTest, ErroneousClass) {
1352 ScopedObjectAccess soa(Thread::Current());
1353 jobject jclass_loader = LoadMultiDex("ErroneousA", "ErroneousB");
1354 StackHandleScope<1> hs(soa.Self());
1355 Handle<mirror::ClassLoader> class_loader(
1356 hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
1357 hs.Self()->AssertNoPendingException();
1358 const char* descriptor = "LErroneous;";
1359 ObjPtr<mirror::Class> klass = FindClass(descriptor, class_loader);
1360 // Erronenous since we are extending final class.
1361 hs.Self()->AssertPendingException();
1362 EXPECT_TRUE(klass == nullptr);
1363 klass = class_linker_->LookupClass(soa.Self(), descriptor, class_loader.Get());
1364 EXPECT_FALSE(klass == nullptr);
1365 EXPECT_TRUE(klass->IsErroneous());
1366 EXPECT_TRUE(klass->GetIfTable() != nullptr);
1367 }
1368
TEST_F(ClassLinkerTest,FinalizableBit)1369 TEST_F(ClassLinkerTest, FinalizableBit) {
1370 ScopedObjectAccess soa(Thread::Current());
1371 ObjPtr<mirror::Class> c;
1372
1373 // Object has a finalize method, but we know it's empty.
1374 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1375 EXPECT_FALSE(c->IsFinalizable());
1376
1377 // Enum has a finalize method to prevent its subclasses from implementing one.
1378 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Enum;");
1379 EXPECT_FALSE(c->IsFinalizable());
1380
1381 // RoundingMode is an enum.
1382 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/math/RoundingMode;");
1383 EXPECT_FALSE(c->IsFinalizable());
1384
1385 // RandomAccessFile extends Object and overrides finalize.
1386 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/RandomAccessFile;");
1387 EXPECT_TRUE(c->IsFinalizable());
1388
1389 // FileInputStream is finalizable and extends InputStream which isn't.
1390 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/InputStream;");
1391 EXPECT_FALSE(c->IsFinalizable());
1392 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/FileInputStream;");
1393 EXPECT_TRUE(c->IsFinalizable());
1394
1395 // ScheduledThreadPoolExecutor doesn't have a finalize method but
1396 // extends ThreadPoolExecutor which does.
1397 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ThreadPoolExecutor;");
1398 EXPECT_TRUE(c->IsFinalizable());
1399 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ScheduledThreadPoolExecutor;");
1400 EXPECT_TRUE(c->IsFinalizable());
1401 }
1402
TEST_F(ClassLinkerTest,ClassRootDescriptors)1403 TEST_F(ClassLinkerTest, ClassRootDescriptors) {
1404 ScopedObjectAccess soa(Thread::Current());
1405 std::string temp;
1406 for (size_t i = 0; i < static_cast<size_t>(ClassRoot::kMax); i++) {
1407 ObjPtr<mirror::Class> klass = GetClassRoot(ClassRoot(i), class_linker_);
1408 EXPECT_GT(strlen(klass->GetDescriptor(&temp)), 0U);
1409 EXPECT_STREQ(klass->GetDescriptor(&temp), GetClassRootDescriptor(ClassRoot(i))) << " i = " << i;
1410 }
1411 }
1412
TEST_F(ClassLinkerTest,ValidatePredefinedClassSizes)1413 TEST_F(ClassLinkerTest, ValidatePredefinedClassSizes) {
1414 ScopedObjectAccess soa(Thread::Current());
1415 ScopedNullHandle<mirror::ClassLoader> class_loader;
1416 ObjPtr<mirror::Class> c;
1417
1418 c = FindClass("Ljava/lang/Class;", class_loader);
1419 ASSERT_TRUE(c != nullptr);
1420 EXPECT_EQ(c->GetClassSize(), mirror::Class::ClassClassSize(kRuntimePointerSize));
1421
1422 c = FindClass("Ljava/lang/Object;", class_loader);
1423 ASSERT_TRUE(c != nullptr);
1424 EXPECT_EQ(c->GetClassSize(), mirror::Object::ClassSize(kRuntimePointerSize));
1425
1426 c = FindClass("Ljava/lang/String;", class_loader);
1427 ASSERT_TRUE(c != nullptr);
1428 EXPECT_EQ(c->GetClassSize(), mirror::String::ClassSize(kRuntimePointerSize));
1429
1430 c = FindClass("Ljava/lang/DexCache;", class_loader);
1431 ASSERT_TRUE(c != nullptr);
1432 EXPECT_EQ(c->GetClassSize(), mirror::DexCache::ClassSize(kRuntimePointerSize));
1433 }
1434
CheckMethod(ArtMethod * method,bool verified)1435 static void CheckMethod(ArtMethod* method, bool verified)
1436 REQUIRES_SHARED(Locks::mutator_lock_) {
1437 if (!method->IsNative() && !method->IsAbstract()) {
1438 EXPECT_EQ((method->GetAccessFlags() & kAccSkipAccessChecks) != 0U, verified)
1439 << method->PrettyMethod(true);
1440 }
1441 }
1442
CheckVerificationAttempted(ObjPtr<mirror::Class> c,bool preverified)1443 static void CheckVerificationAttempted(ObjPtr<mirror::Class> c, bool preverified)
1444 REQUIRES_SHARED(Locks::mutator_lock_) {
1445 for (auto& m : c->GetMethods(kRuntimePointerSize)) {
1446 CheckMethod(&m, preverified);
1447 }
1448 }
1449
TEST_F(ClassLinkerTest,Preverified_InitializedBoot)1450 TEST_F(ClassLinkerTest, Preverified_InitializedBoot) {
1451 ScopedObjectAccess soa(Thread::Current());
1452
1453 ObjPtr<mirror::Class> JavaLangObject =
1454 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1455 ASSERT_TRUE(JavaLangObject != nullptr);
1456 EXPECT_TRUE(JavaLangObject->IsInitialized()) << "Not testing already initialized class from the "
1457 "core";
1458 CheckVerificationAttempted(JavaLangObject, true);
1459 }
1460
TEST_F(ClassLinkerTest,Preverified_UninitializedBoot)1461 TEST_F(ClassLinkerTest, Preverified_UninitializedBoot) {
1462 ScopedObjectAccess soa(Thread::Current());
1463
1464 StackHandleScope<1> hs(soa.Self());
1465
1466 Handle<mirror::Class> security_manager(hs.NewHandle(class_linker_->FindSystemClass(
1467 soa.Self(), "Ljava/lang/SecurityManager;")));
1468 EXPECT_FALSE(security_manager->IsInitialized()) << "Not testing uninitialized class from the "
1469 "core";
1470
1471 CheckVerificationAttempted(security_manager.Get(), false);
1472
1473 class_linker_->EnsureInitialized(soa.Self(), security_manager, true, true);
1474 CheckVerificationAttempted(security_manager.Get(), true);
1475 }
1476
TEST_F(ClassLinkerTest,Preverified_App)1477 TEST_F(ClassLinkerTest, Preverified_App) {
1478 ScopedObjectAccess soa(Thread::Current());
1479
1480 StackHandleScope<2> hs(soa.Self());
1481 Handle<mirror::ClassLoader> class_loader(
1482 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1483 Handle<mirror::Class> statics = hs.NewHandle(FindClass("LStatics;", class_loader));
1484
1485 CheckVerificationAttempted(statics.Get(), false);
1486
1487 class_linker_->EnsureInitialized(soa.Self(), statics, true, true);
1488 CheckVerificationAttempted(statics.Get(), true);
1489 }
1490
TEST_F(ClassLinkerTest,IsBootStrapClassLoaded)1491 TEST_F(ClassLinkerTest, IsBootStrapClassLoaded) {
1492 ScopedObjectAccess soa(Thread::Current());
1493
1494 StackHandleScope<3> hs(soa.Self());
1495 Handle<mirror::ClassLoader> class_loader(
1496 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1497
1498 // java.lang.Object is a bootstrap class.
1499 Handle<mirror::Class> jlo_class(
1500 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;")));
1501 ASSERT_TRUE(jlo_class != nullptr);
1502 EXPECT_TRUE(jlo_class->IsBootStrapClassLoaded());
1503
1504 // Statics is not a bootstrap class.
1505 Handle<mirror::Class> statics = hs.NewHandle(FindClass("LStatics;", class_loader));
1506 ASSERT_TRUE(statics != nullptr);
1507 EXPECT_FALSE(statics->IsBootStrapClassLoaded());
1508 }
1509
1510 // Regression test for b/26799552.
TEST_F(ClassLinkerTest,RegisterDexFileName)1511 TEST_F(ClassLinkerTest, RegisterDexFileName) {
1512 ScopedObjectAccess soa(Thread::Current());
1513 StackHandleScope<2> hs(soa.Self());
1514 ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
1515 MutableHandle<mirror::DexCache> dex_cache(hs.NewHandle<mirror::DexCache>(nullptr));
1516 {
1517 ReaderMutexLock mu(soa.Self(), *Locks::dex_lock_);
1518 for (const auto& entry : class_linker->GetDexCachesData()) {
1519 const ClassLinker::DexCacheData& data = entry.second;
1520 dex_cache.Assign(soa.Self()->DecodeJObject(data.weak_root)->AsDexCache());
1521 if (dex_cache != nullptr) {
1522 break;
1523 }
1524 }
1525 ASSERT_TRUE(dex_cache != nullptr);
1526 }
1527 const uint16_t data[] = { 0x20AC, 0x20A1 };
1528 Handle<mirror::String> location(hs.NewHandle(mirror::String::AllocFromUtf16(soa.Self(),
1529 arraysize(data),
1530 data)));
1531 const DexFile* old_dex_file = dex_cache->GetDexFile();
1532
1533 auto container =
1534 std::make_shared<MemoryDexFileContainer>(old_dex_file->Begin(), old_dex_file->Size());
1535 std::unique_ptr<DexFile> dex_file(new StandardDexFile(
1536 old_dex_file->Begin(), location->ToModifiedUtf8(), 0u, nullptr, std::move(container)));
1537 // Make a copy of the dex cache with changed name.
1538 dex_cache.Assign(class_linker->AllocAndInitializeDexCache(Thread::Current(),
1539 *dex_file,
1540 /* class_loader= */ nullptr));
1541 DCHECK_EQ(dex_cache->GetLocation()->CompareTo(location.Get()), 0);
1542 {
1543 WriterMutexLock mu(soa.Self(), *Locks::dex_lock_);
1544 // Check that inserting with a UTF16 name works.
1545 class_linker->RegisterDexFileLocked(*dex_file, dex_cache.Get(), /* class_loader= */ nullptr);
1546 }
1547 }
1548
TEST_F(ClassLinkerMethodHandlesTest,TestResolveMethodTypes)1549 TEST_F(ClassLinkerMethodHandlesTest, TestResolveMethodTypes) {
1550 ScopedObjectAccess soa(Thread::Current());
1551 StackHandleScope<7> hs(soa.Self());
1552
1553 Handle<mirror::ClassLoader> class_loader(
1554 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MethodTypes"))));
1555 Handle<mirror::Class> method_types = hs.NewHandle(FindClass("LMethodTypes;", class_loader));
1556 class_linker_->EnsureInitialized(soa.Self(), method_types, true, true);
1557
1558 ArtMethod* method1 = method_types->FindClassMethod(
1559 "method1",
1560 "(Ljava/lang/String;)Ljava/lang/String;",
1561 kRuntimePointerSize);
1562 ASSERT_TRUE(method1 != nullptr);
1563 ASSERT_FALSE(method1->IsDirect());
1564
1565 const DexFile& dex_file = *(method1->GetDexFile());
1566 Handle<mirror::DexCache> dex_cache = hs.NewHandle(
1567 class_linker_->FindDexCache(soa.Self(), dex_file));
1568
1569 const dex::MethodId& method1_id = dex_file.GetMethodId(method1->GetDexMethodIndex());
1570
1571 // This is the MethodType corresponding to the prototype of
1572 // String MethodTypes# method1(String).
1573 // Its RType = Ljava/lang/String;
1574 // Its PTypes = { Ljava/lang/String; }
1575 Handle<mirror::MethodType> method1_type = hs.NewHandle(
1576 class_linker_->ResolveMethodType(soa.Self(), method1_id.proto_idx_, dex_cache, class_loader));
1577
1578 // Assert that the method type was resolved successfully.
1579 ASSERT_TRUE(method1_type != nullptr);
1580
1581 // Assert that the return type and the method arguments are as we expect.
1582 Handle<mirror::Class> string_class = hs.NewHandle(FindClass("Ljava/lang/String;", class_loader));
1583 ASSERT_OBJ_PTR_EQ(string_class.Get(), method1_type->GetRType());
1584 ASSERT_OBJ_PTR_EQ(string_class.Get(), method1_type->GetPTypes()->Get(0));
1585
1586 // Resolve the method type again and assert that we get back the same value.
1587 Handle<mirror::MethodType> method1_type2 = hs.NewHandle(
1588 class_linker_->ResolveMethodType(soa.Self(), method1_id.proto_idx_, dex_cache, class_loader));
1589 ASSERT_OBJ_PTR_EQ(method1_type.Get(), method1_type2.Get());
1590
1591 // Resolve the MethodType associated with a different method signature
1592 // and assert it's different.
1593 ArtMethod* method2 = method_types->FindClassMethod(
1594 "method2",
1595 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
1596 kRuntimePointerSize);
1597 ASSERT_TRUE(method2 != nullptr);
1598 ASSERT_FALSE(method2->IsDirect());
1599 const dex::MethodId& method2_id = dex_file.GetMethodId(method2->GetDexMethodIndex());
1600 Handle<mirror::MethodType> method2_type = hs.NewHandle(
1601 class_linker_->ResolveMethodType(soa.Self(), method2_id.proto_idx_, dex_cache, class_loader));
1602 ASSERT_OBJ_PTR_NE(method1_type.Get(), method2_type.Get());
1603 }
1604
1605 // Verify that ClassLinker's CreateWellknownClassLoader works as expected
1606 // by creating a chain of class loaders with various dex files.
TEST_F(ClassLinkerTest,CreateWellKnownClassLoader)1607 TEST_F(ClassLinkerTest, CreateWellKnownClassLoader) {
1608 // LoadDexIn*ClassLoader methods already assert that the parent loader is the expected one.
1609 // No need to check again.
1610 jobject class_loader_a = LoadDexInPathClassLoader("MyClass", nullptr);
1611 jobject class_loader_b = LoadDexInDelegateLastClassLoader("Nested", class_loader_a);
1612 jobject class_loader_c = LoadDexInPathClassLoader("MultiDex", class_loader_b);
1613 LoadDexInDelegateLastClassLoader("Interfaces", class_loader_c);
1614 }
1615
TEST_F(ClassLinkerTest,PrettyClass)1616 TEST_F(ClassLinkerTest, PrettyClass) {
1617 ScopedObjectAccess soa(Thread::Current());
1618 EXPECT_EQ("null", mirror::Class::PrettyClass(nullptr));
1619 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
1620 ASSERT_TRUE(c != nullptr);
1621 ObjPtr<mirror::Object> o = mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), c, 0);
1622 EXPECT_EQ("java.lang.Class<java.lang.String[]>", mirror::Class::PrettyClass(o->GetClass()));
1623 }
1624
TEST_F(ClassLinkerTest,PrettyClassAndClassLoader)1625 TEST_F(ClassLinkerTest, PrettyClassAndClassLoader) {
1626 ScopedObjectAccess soa(Thread::Current());
1627 EXPECT_EQ("null", mirror::Class::PrettyClassAndClassLoader(nullptr));
1628 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
1629 ASSERT_TRUE(c != nullptr);
1630 ObjPtr<mirror::Object> o = mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), c, 0);
1631 EXPECT_EQ("java.lang.Class<java.lang.String[],null>",
1632 mirror::Class::PrettyClassAndClassLoader(o->GetClass()));
1633 }
1634
TEST_F(ClassLinkerTest,PrettyField)1635 TEST_F(ClassLinkerTest, PrettyField) {
1636 ScopedObjectAccess soa(Thread::Current());
1637 EXPECT_EQ("null", ArtField::PrettyField(nullptr));
1638
1639 ObjPtr<mirror::Class> java_lang_String = class_linker_->FindSystemClass(soa.Self(),
1640 "Ljava/lang/String;");
1641
1642 ArtField* f;
1643 f = java_lang_String->FindDeclaredInstanceField("count", "I");
1644 EXPECT_EQ("int java.lang.String.count", f->PrettyField());
1645 EXPECT_EQ("java.lang.String.count", f->PrettyField(false));
1646 }
1647
TEST_F(ClassLinkerTest,JniShortName_JniLongName)1648 TEST_F(ClassLinkerTest, JniShortName_JniLongName) {
1649 ScopedObjectAccess soa(Thread::Current());
1650 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/String;");
1651 ASSERT_TRUE(c != nullptr);
1652 ArtMethod* m;
1653
1654 m = c->FindClassMethod("charAt", "(I)C", kRuntimePointerSize);
1655 ASSERT_TRUE(m != nullptr);
1656 ASSERT_FALSE(m->IsDirect());
1657 EXPECT_EQ("Java_java_lang_String_charAt", m->JniShortName());
1658 EXPECT_EQ("Java_java_lang_String_charAt__I", m->JniLongName());
1659
1660 m = c->FindClassMethod("indexOf", "(Ljava/lang/String;I)I", kRuntimePointerSize);
1661 ASSERT_TRUE(m != nullptr);
1662 ASSERT_FALSE(m->IsDirect());
1663 EXPECT_EQ("Java_java_lang_String_indexOf", m->JniShortName());
1664 EXPECT_EQ("Java_java_lang_String_indexOf__Ljava_lang_String_2I", m->JniLongName());
1665
1666 m = c->FindClassMethod("copyValueOf", "([CII)Ljava/lang/String;", kRuntimePointerSize);
1667 ASSERT_TRUE(m != nullptr);
1668 ASSERT_TRUE(m->IsStatic());
1669 EXPECT_EQ("Java_java_lang_String_copyValueOf", m->JniShortName());
1670 EXPECT_EQ("Java_java_lang_String_copyValueOf___3CII", m->JniLongName());
1671 }
1672
1673 class ClassLinkerClassLoaderTest : public ClassLinkerTest {
1674 protected:
1675 // Verifies that the class identified by the given descriptor is loaded with
1676 // the expected_class_loader_obj when search from class_loader_to_search_obj.
1677 // 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)1678 void VerifyClassResolution(const std::string& descriptor,
1679 jobject class_loader_to_search_obj,
1680 jobject expected_class_loader_obj,
1681 bool should_find = true) {
1682 Thread* self = Thread::Current();
1683 ScopedObjectAccess soa(self);
1684 StackHandleScope<3> hs(self);
1685 Handle<mirror::ClassLoader> class_loader_to_search(
1686 hs.NewHandle(soa.Decode<mirror::ClassLoader>(class_loader_to_search_obj)));
1687
1688 Handle<mirror::Class> klass =
1689 hs.NewHandle(FindClass(descriptor.c_str(), class_loader_to_search));
1690
1691 if (!should_find) {
1692 if (self->IsExceptionPending()) {
1693 self->ClearException();
1694 }
1695 ASSERT_TRUE(klass == nullptr);
1696 } else if (expected_class_loader_obj == nullptr) {
1697 ASSERT_TRUE(ClassLinker::IsBootClassLoader(klass->GetClassLoader()));
1698 } else {
1699 ASSERT_TRUE(klass != nullptr) << descriptor;
1700 Handle<mirror::ClassLoader> expected_class_loader(
1701 hs.NewHandle(soa.Decode<mirror::ClassLoader>(expected_class_loader_obj)));
1702 ASSERT_OBJ_PTR_EQ(klass->GetClassLoader(), expected_class_loader.Get());
1703 }
1704 }
1705 };
1706
TEST_F(ClassLinkerClassLoaderTest,CreatePathClassLoader)1707 TEST_F(ClassLinkerClassLoaderTest, CreatePathClassLoader) {
1708 jobject class_loader_a = LoadDexInPathClassLoader("ForClassLoaderA", nullptr);
1709 VerifyClassResolution("LDefinedInA;", class_loader_a, class_loader_a);
1710 VerifyClassResolution("Ljava/lang/String;", class_loader_a, nullptr);
1711 VerifyClassResolution("LDefinedInB;", class_loader_a, nullptr, /*should_find=*/ false);
1712 }
1713
TEST_F(ClassLinkerClassLoaderTest,CreateDelegateLastClassLoader)1714 TEST_F(ClassLinkerClassLoaderTest, CreateDelegateLastClassLoader) {
1715 jobject class_loader_a = LoadDexInDelegateLastClassLoader("ForClassLoaderA", nullptr);
1716 VerifyClassResolution("LDefinedInA;", class_loader_a, class_loader_a);
1717 VerifyClassResolution("Ljava/lang/String;", class_loader_a, nullptr);
1718 VerifyClassResolution("LDefinedInB;", class_loader_a, nullptr, /*should_find=*/ false);
1719 }
1720
TEST_F(ClassLinkerClassLoaderTest,CreateClassLoaderChain)1721 TEST_F(ClassLinkerClassLoaderTest, CreateClassLoaderChain) {
1722 // The chain is
1723 // ClassLoaderA (PathClassLoader, defines: A, AB, AC, AD)
1724 // ^
1725 // |
1726 // ClassLoaderB (DelegateLastClassLoader, defines: B, AB, BC, BD)
1727 // ^
1728 // |
1729 // ClassLoaderC (PathClassLoader, defines: C, AC, BC, CD)
1730 // ^
1731 // |
1732 // ClassLoaderD (DelegateLastClassLoader, defines: D, AD, BD, CD)
1733
1734 jobject class_loader_a = LoadDexInPathClassLoader("ForClassLoaderA", nullptr);
1735 jobject class_loader_b = LoadDexInDelegateLastClassLoader("ForClassLoaderB", class_loader_a);
1736 jobject class_loader_c = LoadDexInPathClassLoader("ForClassLoaderC", class_loader_b);
1737 jobject class_loader_d = LoadDexInDelegateLastClassLoader("ForClassLoaderD", class_loader_c);
1738
1739 // Verify exclusive classes (present in only one class loader).
1740 VerifyClassResolution("LDefinedInD;", class_loader_d, class_loader_d);
1741 VerifyClassResolution("LDefinedInC;", class_loader_d, class_loader_c);
1742 VerifyClassResolution("LDefinedInB;", class_loader_d, class_loader_b);
1743 VerifyClassResolution("LDefinedInA;", class_loader_d, class_loader_a);
1744
1745 // Verify classes that are defined in multiple classloader.
1746
1747 // Classes defined in B should be found in B even if they are defined in A or C because
1748 // B is a DelegateLastClassLoader.
1749 VerifyClassResolution("LDefinedInAB;", class_loader_d, class_loader_b);
1750 VerifyClassResolution("LDefinedInABC;", class_loader_d, class_loader_b);
1751 VerifyClassResolution("LDefinedInBC;", class_loader_d, class_loader_b);
1752
1753 // Classes defined in D should be found in D even if they are defined in parent class loaders
1754 // as well because D is a DelegateLastClassLoader.
1755 VerifyClassResolution("LDefinedInAD;", class_loader_d, class_loader_d);
1756 VerifyClassResolution("LDefinedInBD;", class_loader_d, class_loader_d);
1757 VerifyClassResolution("LDefinedInCD;", class_loader_d, class_loader_d);
1758
1759
1760 // Classes not defined in the DelegateLastClassLoaders (i.e. D or B) should be found
1761 // in the top parent.
1762 VerifyClassResolution("LDefinedInAC;", class_loader_d, class_loader_a);
1763
1764 // Check that we don't find an undefined class.
1765 VerifyClassResolution("LNotDefined;", class_loader_d, nullptr, /*should_find=*/ false);
1766 }
1767
1768 } // namespace art
1769