1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "class_linker.h"
18
19 #include <memory>
20 #include <string>
21
22 #include "android-base/strings.h"
23
24 #include "art_field-inl.h"
25 #include "art_method-inl.h"
26 #include "base/enums.h"
27 #include "class_linker-inl.h"
28 #include "common_runtime_test.h"
29 #include "dex_file.h"
30 #include "dex_file_types.h"
31 #include "experimental_flags.h"
32 #include "entrypoints/entrypoint_utils-inl.h"
33 #include "gc/heap.h"
34 #include "mirror/accessible_object.h"
35 #include "mirror/call_site.h"
36 #include "mirror/class-inl.h"
37 #include "mirror/class_ext.h"
38 #include "mirror/dex_cache.h"
39 #include "mirror/emulated_stack_frame.h"
40 #include "mirror/executable.h"
41 #include "mirror/field.h"
42 #include "mirror/method_type.h"
43 #include "mirror/method_handle_impl.h"
44 #include "mirror/method_handles_lookup.h"
45 #include "mirror/object-inl.h"
46 #include "mirror/object_array-inl.h"
47 #include "mirror/proxy.h"
48 #include "mirror/reference.h"
49 #include "mirror/stack_trace_element.h"
50 #include "mirror/string-inl.h"
51 #include "handle_scope-inl.h"
52 #include "scoped_thread_state_change-inl.h"
53 #include "thread-current-inl.h"
54
55 namespace art {
56
57 class ClassLinkerTest : public CommonRuntimeTest {
58 protected:
AssertNonExistentClass(const std::string & descriptor)59 void AssertNonExistentClass(const std::string& descriptor)
60 REQUIRES_SHARED(Locks::mutator_lock_) {
61 Thread* self = Thread::Current();
62 EXPECT_TRUE(class_linker_->FindSystemClass(self, descriptor.c_str()) == nullptr);
63 EXPECT_TRUE(self->IsExceptionPending());
64 mirror::Object* exception = self->GetException();
65 self->ClearException();
66 mirror::Class* exception_class =
67 class_linker_->FindSystemClass(self, "Ljava/lang/NoClassDefFoundError;");
68 EXPECT_TRUE(exception->InstanceOf(exception_class));
69 }
70
AssertPrimitiveClass(const std::string & descriptor)71 void AssertPrimitiveClass(const std::string& descriptor)
72 REQUIRES_SHARED(Locks::mutator_lock_) {
73 Thread* self = Thread::Current();
74 AssertPrimitiveClass(descriptor, class_linker_->FindSystemClass(self, descriptor.c_str()));
75 }
76
AssertPrimitiveClass(const std::string & descriptor,mirror::Class * primitive)77 void AssertPrimitiveClass(const std::string& descriptor, mirror::Class* primitive)
78 REQUIRES_SHARED(Locks::mutator_lock_) {
79 ASSERT_TRUE(primitive != nullptr);
80 ASSERT_TRUE(primitive->GetClass() != nullptr);
81 ASSERT_EQ(primitive->GetClass(), primitive->GetClass()->GetClass());
82 EXPECT_TRUE(primitive->GetClass()->GetSuperClass() != nullptr);
83 std::string temp;
84 ASSERT_STREQ(descriptor.c_str(), primitive->GetDescriptor(&temp));
85 EXPECT_TRUE(primitive->GetSuperClass() == nullptr);
86 EXPECT_FALSE(primitive->HasSuperClass());
87 EXPECT_TRUE(primitive->GetClassLoader() == nullptr);
88 EXPECT_EQ(mirror::Class::kStatusInitialized, primitive->GetStatus());
89 EXPECT_FALSE(primitive->IsErroneous());
90 EXPECT_TRUE(primitive->IsLoaded());
91 EXPECT_TRUE(primitive->IsResolved());
92 EXPECT_FALSE(primitive->IsErroneousResolved());
93 EXPECT_TRUE(primitive->IsVerified());
94 EXPECT_TRUE(primitive->IsInitialized());
95 EXPECT_FALSE(primitive->IsArrayInstance());
96 EXPECT_FALSE(primitive->IsArrayClass());
97 EXPECT_TRUE(primitive->GetComponentType() == nullptr);
98 EXPECT_FALSE(primitive->IsInterface());
99 EXPECT_TRUE(primitive->IsPublic());
100 EXPECT_TRUE(primitive->IsFinal());
101 EXPECT_TRUE(primitive->IsPrimitive());
102 EXPECT_FALSE(primitive->IsSynthetic());
103 EXPECT_EQ(0U, primitive->NumDirectMethods());
104 EXPECT_EQ(0U, primitive->NumVirtualMethods());
105 EXPECT_EQ(0U, primitive->NumInstanceFields());
106 EXPECT_EQ(0U, primitive->NumStaticFields());
107 EXPECT_EQ(0U, primitive->NumDirectInterfaces());
108 EXPECT_FALSE(primitive->HasVTable());
109 EXPECT_EQ(0, primitive->GetIfTableCount());
110 EXPECT_TRUE(primitive->GetIfTable() != nullptr);
111 EXPECT_EQ(primitive->GetIfTable()->Count(), 0u);
112 EXPECT_EQ(kAccPublic | kAccFinal | kAccAbstract, primitive->GetAccessFlags());
113 }
114
AssertObjectClass(mirror::Class * JavaLangObject)115 void AssertObjectClass(mirror::Class* JavaLangObject)
116 REQUIRES_SHARED(Locks::mutator_lock_) {
117 ASSERT_TRUE(JavaLangObject != nullptr);
118 ASSERT_TRUE(JavaLangObject->GetClass() != nullptr);
119 ASSERT_EQ(JavaLangObject->GetClass(),
120 JavaLangObject->GetClass()->GetClass());
121 EXPECT_EQ(JavaLangObject, JavaLangObject->GetClass()->GetSuperClass());
122 std::string temp;
123 ASSERT_STREQ(JavaLangObject->GetDescriptor(&temp), "Ljava/lang/Object;");
124 EXPECT_TRUE(JavaLangObject->GetSuperClass() == nullptr);
125 EXPECT_FALSE(JavaLangObject->HasSuperClass());
126 EXPECT_TRUE(JavaLangObject->GetClassLoader() == nullptr);
127 EXPECT_EQ(mirror::Class::kStatusInitialized, JavaLangObject->GetStatus());
128 EXPECT_FALSE(JavaLangObject->IsErroneous());
129 EXPECT_TRUE(JavaLangObject->IsLoaded());
130 EXPECT_TRUE(JavaLangObject->IsResolved());
131 EXPECT_FALSE(JavaLangObject->IsErroneousResolved());
132 EXPECT_TRUE(JavaLangObject->IsVerified());
133 EXPECT_TRUE(JavaLangObject->IsInitialized());
134 EXPECT_FALSE(JavaLangObject->IsArrayInstance());
135 EXPECT_FALSE(JavaLangObject->IsArrayClass());
136 EXPECT_TRUE(JavaLangObject->GetComponentType() == nullptr);
137 EXPECT_FALSE(JavaLangObject->IsInterface());
138 EXPECT_TRUE(JavaLangObject->IsPublic());
139 EXPECT_FALSE(JavaLangObject->IsFinal());
140 EXPECT_FALSE(JavaLangObject->IsPrimitive());
141 EXPECT_FALSE(JavaLangObject->IsSynthetic());
142 EXPECT_EQ(4U, JavaLangObject->NumDirectMethods());
143 EXPECT_EQ(11U, JavaLangObject->NumVirtualMethods());
144 if (!kUseBrooksReadBarrier) {
145 EXPECT_EQ(2U, JavaLangObject->NumInstanceFields());
146 } else {
147 EXPECT_EQ(4U, JavaLangObject->NumInstanceFields());
148 }
149 EXPECT_STREQ(JavaLangObject->GetInstanceField(0)->GetName(),
150 "shadow$_klass_");
151 EXPECT_STREQ(JavaLangObject->GetInstanceField(1)->GetName(),
152 "shadow$_monitor_");
153 if (kUseBrooksReadBarrier) {
154 EXPECT_STREQ(JavaLangObject->GetInstanceField(2)->GetName(),
155 "shadow$_x_rb_ptr_");
156 EXPECT_STREQ(JavaLangObject->GetInstanceField(3)->GetName(),
157 "shadow$_x_xpadding_");
158 }
159
160 EXPECT_EQ(0U, JavaLangObject->NumStaticFields());
161 EXPECT_EQ(0U, JavaLangObject->NumDirectInterfaces());
162
163 PointerSize pointer_size = class_linker_->GetImagePointerSize();
164 ArtMethod* unimplemented = runtime_->GetImtUnimplementedMethod();
165 ImTable* imt = JavaLangObject->GetImt(pointer_size);
166 ASSERT_NE(nullptr, imt);
167 for (size_t i = 0; i < ImTable::kSize; ++i) {
168 ASSERT_EQ(unimplemented, imt->Get(i, pointer_size));
169 }
170 }
171
AssertArrayClass(const std::string & array_descriptor,const std::string & component_type,mirror::ClassLoader * class_loader)172 void AssertArrayClass(const std::string& array_descriptor,
173 const std::string& component_type,
174 mirror::ClassLoader* class_loader)
175 REQUIRES_SHARED(Locks::mutator_lock_) {
176 Thread* self = Thread::Current();
177 StackHandleScope<2> hs(self);
178 Handle<mirror::ClassLoader> loader(hs.NewHandle(class_loader));
179 Handle<mirror::Class> array(
180 hs.NewHandle(class_linker_->FindClass(self, array_descriptor.c_str(), loader)));
181 std::string temp;
182 EXPECT_STREQ(component_type.c_str(), array->GetComponentType()->GetDescriptor(&temp));
183 EXPECT_EQ(class_loader, array->GetClassLoader());
184 EXPECT_EQ(kAccFinal | kAccAbstract, (array->GetAccessFlags() & (kAccFinal | kAccAbstract)));
185 AssertArrayClass(array_descriptor, array);
186 }
187
AssertArrayClass(const std::string & array_descriptor,Handle<mirror::Class> array)188 void AssertArrayClass(const std::string& array_descriptor, Handle<mirror::Class> array)
189 REQUIRES_SHARED(Locks::mutator_lock_) {
190 ASSERT_TRUE(array != nullptr);
191 ASSERT_TRUE(array->GetClass() != nullptr);
192 ASSERT_EQ(array->GetClass(), array->GetClass()->GetClass());
193 EXPECT_TRUE(array->GetClass()->GetSuperClass() != nullptr);
194 std::string temp;
195 ASSERT_STREQ(array_descriptor.c_str(), array->GetDescriptor(&temp));
196 EXPECT_TRUE(array->GetSuperClass() != nullptr);
197 Thread* self = Thread::Current();
198 EXPECT_EQ(class_linker_->FindSystemClass(self, "Ljava/lang/Object;"), array->GetSuperClass());
199 EXPECT_TRUE(array->HasSuperClass());
200 ASSERT_TRUE(array->GetComponentType() != nullptr);
201 ASSERT_GT(strlen(array->GetComponentType()->GetDescriptor(&temp)), 0U);
202 EXPECT_EQ(mirror::Class::kStatusInitialized, array->GetStatus());
203 EXPECT_FALSE(array->IsErroneous());
204 EXPECT_TRUE(array->IsLoaded());
205 EXPECT_TRUE(array->IsResolved());
206 EXPECT_FALSE(array->IsErroneousResolved());
207 EXPECT_TRUE(array->IsVerified());
208 EXPECT_TRUE(array->IsInitialized());
209 EXPECT_FALSE(array->IsArrayInstance());
210 EXPECT_TRUE(array->IsArrayClass());
211 EXPECT_FALSE(array->IsInterface());
212 EXPECT_EQ(array->GetComponentType()->IsPublic(), array->IsPublic());
213 EXPECT_TRUE(array->IsFinal());
214 EXPECT_FALSE(array->IsPrimitive());
215 EXPECT_FALSE(array->IsSynthetic());
216 EXPECT_EQ(0U, array->NumDirectMethods());
217 EXPECT_EQ(0U, array->NumVirtualMethods());
218 EXPECT_EQ(0U, array->NumInstanceFields());
219 EXPECT_EQ(0U, array->NumStaticFields());
220 EXPECT_EQ(2U, array->NumDirectInterfaces());
221 EXPECT_TRUE(array->ShouldHaveImt());
222 EXPECT_TRUE(array->ShouldHaveEmbeddedVTable());
223 EXPECT_EQ(2, array->GetIfTableCount());
224 ASSERT_TRUE(array->GetIfTable() != nullptr);
225 ObjPtr<mirror::Class> direct_interface0 =
226 mirror::Class::GetDirectInterface(self, array.Get(), 0);
227 EXPECT_TRUE(direct_interface0 != nullptr);
228 EXPECT_STREQ(direct_interface0->GetDescriptor(&temp), "Ljava/lang/Cloneable;");
229 ObjPtr<mirror::Class> direct_interface1 =
230 mirror::Class::GetDirectInterface(self, array.Get(), 1);
231 EXPECT_STREQ(direct_interface1->GetDescriptor(&temp), "Ljava/io/Serializable;");
232 ObjPtr<mirror::Class> array_ptr = array->GetComponentType();
233 EXPECT_OBJ_PTR_EQ(class_linker_->FindArrayClass(self, &array_ptr), array.Get());
234
235 PointerSize pointer_size = class_linker_->GetImagePointerSize();
236 mirror::Class* JavaLangObject =
237 class_linker_->FindSystemClass(self, "Ljava/lang/Object;");
238 ImTable* JavaLangObject_imt = JavaLangObject->GetImt(pointer_size);
239 // IMT of a array class should be shared with the IMT of the java.lag.Object
240 ASSERT_EQ(JavaLangObject_imt, array->GetImt(pointer_size));
241 }
242
AssertMethod(ArtMethod * method)243 void AssertMethod(ArtMethod* method) REQUIRES_SHARED(Locks::mutator_lock_) {
244 EXPECT_TRUE(method != nullptr);
245 EXPECT_TRUE(method->GetDeclaringClass() != nullptr);
246 EXPECT_TRUE(method->GetName() != nullptr);
247 EXPECT_TRUE(method->GetSignature() != Signature::NoSignature());
248
249 EXPECT_TRUE(method->HasDexCacheResolvedMethods(kRuntimePointerSize));
250 EXPECT_TRUE(method->HasSameDexCacheResolvedMethods(
251 method->GetDeclaringClass()->GetDexCache()->GetResolvedMethods(),
252 kRuntimePointerSize));
253 }
254
AssertField(ObjPtr<mirror::Class> klass,ArtField * field)255 void AssertField(ObjPtr<mirror::Class> klass, ArtField* field)
256 REQUIRES_SHARED(Locks::mutator_lock_) {
257 EXPECT_TRUE(field != nullptr);
258 EXPECT_OBJ_PTR_EQ(klass, field->GetDeclaringClass());
259 EXPECT_TRUE(field->GetName() != nullptr);
260 EXPECT_TRUE(field->GetType<true>() != nullptr);
261 }
262
AssertClass(const std::string & descriptor,Handle<mirror::Class> klass)263 void AssertClass(const std::string& descriptor, Handle<mirror::Class> klass)
264 REQUIRES_SHARED(Locks::mutator_lock_) {
265 std::string temp;
266 EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor(&temp));
267 if (descriptor == "Ljava/lang/Object;") {
268 EXPECT_FALSE(klass->HasSuperClass());
269 } else {
270 EXPECT_TRUE(klass->HasSuperClass());
271 EXPECT_TRUE(klass->GetSuperClass() != nullptr);
272 }
273 EXPECT_TRUE(klass->GetClass() != nullptr);
274 EXPECT_EQ(klass->GetClass(), klass->GetClass()->GetClass());
275 EXPECT_TRUE(klass->GetDexCache() != nullptr);
276 EXPECT_TRUE(klass->IsLoaded());
277 EXPECT_TRUE(klass->IsResolved());
278 EXPECT_FALSE(klass->IsErroneousResolved());
279 EXPECT_FALSE(klass->IsErroneous());
280 EXPECT_FALSE(klass->IsArrayClass());
281 EXPECT_TRUE(klass->GetComponentType() == nullptr);
282 EXPECT_TRUE(klass->IsInSamePackage(klass.Get()));
283 std::string temp2;
284 EXPECT_TRUE(mirror::Class::IsInSamePackage(klass->GetDescriptor(&temp),
285 klass->GetDescriptor(&temp2)));
286 if (klass->IsInterface()) {
287 EXPECT_TRUE(klass->IsAbstract());
288 // Check that all direct methods are static (either <clinit> or a regular static method).
289 for (ArtMethod& m : klass->GetDirectMethods(kRuntimePointerSize)) {
290 EXPECT_TRUE(m.IsStatic());
291 EXPECT_TRUE(m.IsDirect());
292 }
293 } else {
294 if (!klass->IsSynthetic()) {
295 EXPECT_NE(0U, klass->NumDirectMethods());
296 }
297 }
298 EXPECT_EQ(klass->IsInterface(), !klass->HasVTable());
299 mirror::IfTable* iftable = klass->GetIfTable();
300 for (int i = 0; i < klass->GetIfTableCount(); i++) {
301 mirror::Class* interface = iftable->GetInterface(i);
302 ASSERT_TRUE(interface != nullptr);
303 if (klass->IsInterface()) {
304 EXPECT_EQ(0U, iftable->GetMethodArrayCount(i));
305 } else {
306 EXPECT_EQ(interface->NumDeclaredVirtualMethods(), iftable->GetMethodArrayCount(i));
307 }
308 }
309 if (klass->IsAbstract()) {
310 EXPECT_FALSE(klass->IsFinal());
311 } else {
312 EXPECT_FALSE(klass->IsAnnotation());
313 }
314 if (klass->IsFinal()) {
315 EXPECT_FALSE(klass->IsAbstract());
316 EXPECT_FALSE(klass->IsAnnotation());
317 }
318 if (klass->IsAnnotation()) {
319 EXPECT_FALSE(klass->IsFinal());
320 EXPECT_TRUE(klass->IsAbstract());
321 }
322
323 EXPECT_FALSE(klass->IsPrimitive());
324 EXPECT_TRUE(klass->CanAccess(klass.Get()));
325
326 for (ArtMethod& method : klass->GetDirectMethods(kRuntimePointerSize)) {
327 AssertMethod(&method);
328 EXPECT_TRUE(method.IsDirect());
329 EXPECT_EQ(klass.Get(), method.GetDeclaringClass());
330 }
331
332 for (ArtMethod& method : klass->GetDeclaredVirtualMethods(kRuntimePointerSize)) {
333 AssertMethod(&method);
334 EXPECT_FALSE(method.IsDirect());
335 EXPECT_EQ(klass.Get(), method.GetDeclaringClass());
336 }
337
338 for (ArtMethod& method : klass->GetCopiedMethods(kRuntimePointerSize)) {
339 AssertMethod(&method);
340 EXPECT_FALSE(method.IsDirect());
341 EXPECT_TRUE(method.IsCopied());
342 EXPECT_TRUE(method.GetDeclaringClass()->IsInterface())
343 << "declaring class: " << method.GetDeclaringClass()->PrettyClass();
344 EXPECT_TRUE(method.GetDeclaringClass()->IsAssignableFrom(klass.Get()))
345 << "declaring class: " << method.GetDeclaringClass()->PrettyClass();
346 }
347
348 for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
349 ArtField* field = klass->GetInstanceField(i);
350 AssertField(klass.Get(), field);
351 EXPECT_FALSE(field->IsStatic());
352 }
353
354 for (size_t i = 0; i < klass->NumStaticFields(); i++) {
355 ArtField* field = klass->GetStaticField(i);
356 AssertField(klass.Get(), field);
357 EXPECT_TRUE(field->IsStatic());
358 }
359
360 // Confirm that all instances field offsets are packed together at the start.
361 EXPECT_GE(klass->NumInstanceFields(), klass->NumReferenceInstanceFields());
362 MemberOffset start_ref_offset = klass->GetFirstReferenceInstanceFieldOffset();
363 MemberOffset end_ref_offset(start_ref_offset.Uint32Value() +
364 klass->NumReferenceInstanceFields() *
365 sizeof(mirror::HeapReference<mirror::Object>));
366 MemberOffset current_ref_offset = start_ref_offset;
367 for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
368 ArtField* field = klass->GetInstanceField(i);
369 ObjPtr<mirror::Class> field_type = field->GetType<true>();
370 ASSERT_TRUE(field_type != nullptr);
371 if (!field->IsPrimitiveType()) {
372 ASSERT_TRUE(!field_type->IsPrimitive());
373 ASSERT_EQ(current_ref_offset.Uint32Value(), field->GetOffset().Uint32Value());
374 if (current_ref_offset.Uint32Value() == end_ref_offset.Uint32Value()) {
375 // While Reference.referent is not primitive, the ClassLinker
376 // treats it as such so that the garbage collector won't scan it.
377 EXPECT_EQ(field->PrettyField(), "java.lang.Object java.lang.ref.Reference.referent");
378 } else {
379 current_ref_offset = MemberOffset(current_ref_offset.Uint32Value() +
380 sizeof(mirror::HeapReference<mirror::Object>));
381 }
382 } else {
383 if (field->GetOffset().Uint32Value() < end_ref_offset.Uint32Value()) {
384 // Shuffled before references.
385 ASSERT_LT(field->GetOffset().Uint32Value(), start_ref_offset.Uint32Value());
386 CHECK(!IsAligned<4>(field->GetOffset().Uint32Value()));
387 }
388 }
389 }
390 ASSERT_EQ(end_ref_offset.Uint32Value(), current_ref_offset.Uint32Value());
391
392 uint32_t total_num_reference_instance_fields = 0;
393 mirror::Class* k = klass.Get();
394 while (k != nullptr) {
395 total_num_reference_instance_fields += k->NumReferenceInstanceFields();
396 k = k->GetSuperClass();
397 }
398 EXPECT_GE(total_num_reference_instance_fields, 1U); // Should always have Object's class.
399 if (klass->GetReferenceInstanceOffsets() != mirror::Class::kClassWalkSuper) {
400 // The reference instance offsets have a bit set for each reference offset.
401 // +1 for Object's class.
402 EXPECT_EQ(static_cast<uint32_t>(POPCOUNT(klass->GetReferenceInstanceOffsets())) + 1,
403 total_num_reference_instance_fields);
404 }
405 }
406
AssertDexFileClass(mirror::ClassLoader * class_loader,const std::string & descriptor)407 void AssertDexFileClass(mirror::ClassLoader* class_loader, const std::string& descriptor)
408 REQUIRES_SHARED(Locks::mutator_lock_) {
409 ASSERT_TRUE(descriptor != nullptr);
410 Thread* self = Thread::Current();
411 StackHandleScope<1> hs(self);
412 Handle<mirror::Class> klass(
413 hs.NewHandle(class_linker_->FindSystemClass(self, descriptor.c_str())));
414 ASSERT_TRUE(klass != nullptr);
415 std::string temp;
416 EXPECT_STREQ(descriptor.c_str(), klass.Get()->GetDescriptor(&temp));
417 EXPECT_EQ(class_loader, klass->GetClassLoader());
418 if (klass->IsPrimitive()) {
419 AssertPrimitiveClass(descriptor, klass.Get());
420 } else if (klass->IsArrayClass()) {
421 AssertArrayClass(descriptor, klass);
422 } else {
423 AssertClass(descriptor, klass);
424 }
425 }
426
AssertDexFile(const DexFile & dex,mirror::ClassLoader * class_loader)427 void AssertDexFile(const DexFile& dex, mirror::ClassLoader* class_loader)
428 REQUIRES_SHARED(Locks::mutator_lock_) {
429 // Verify all the classes defined in this file
430 for (size_t i = 0; i < dex.NumClassDefs(); i++) {
431 const DexFile::ClassDef& class_def = dex.GetClassDef(i);
432 const char* descriptor = dex.GetClassDescriptor(class_def);
433 AssertDexFileClass(class_loader, descriptor);
434 }
435 // Verify all the types referenced by this file
436 for (size_t i = 0; i < dex.NumTypeIds(); i++) {
437 const DexFile::TypeId& type_id = dex.GetTypeId(dex::TypeIndex(i));
438 const char* descriptor = dex.GetTypeDescriptor(type_id);
439 AssertDexFileClass(class_loader, descriptor);
440 }
441 TestRootVisitor visitor;
442 class_linker_->VisitRoots(&visitor, kVisitRootFlagAllRoots);
443 }
444
445 class TestRootVisitor : public SingleRootVisitor {
446 public:
VisitRoot(mirror::Object * root,const RootInfo & info ATTRIBUTE_UNUSED)447 void VisitRoot(mirror::Object* root, const RootInfo& info ATTRIBUTE_UNUSED) OVERRIDE {
448 EXPECT_TRUE(root != nullptr);
449 }
450 };
451 };
452
453 class ClassLinkerMethodHandlesTest : public ClassLinkerTest {
454 protected:
SetUpRuntimeOptions(RuntimeOptions * options)455 virtual void SetUpRuntimeOptions(RuntimeOptions* options) OVERRIDE {
456 CommonRuntimeTest::SetUpRuntimeOptions(options);
457 }
458 };
459
460 struct CheckOffset {
461 size_t cpp_offset;
462 const char* java_name;
CheckOffsetart::CheckOffset463 CheckOffset(size_t c, const char* j) : cpp_offset(c), java_name(j) {}
464 };
465
466 template <typename T>
467 struct CheckOffsets {
CheckOffsetsart::CheckOffsets468 CheckOffsets(bool is_static_in, const char* class_descriptor_in)
469 : is_static(is_static_in), class_descriptor(class_descriptor_in) {}
470 bool is_static;
471 std::string class_descriptor;
472 std::vector<CheckOffset> offsets;
473
Checkart::CheckOffsets474 bool Check() REQUIRES_SHARED(Locks::mutator_lock_) {
475 Thread* self = Thread::Current();
476 mirror::Class* klass =
477 Runtime::Current()->GetClassLinker()->FindSystemClass(self, class_descriptor.c_str());
478 CHECK(klass != nullptr) << 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 // Currently only required for AccessibleObject since of the padding fields. The class linker
485 // says AccessibleObject is 9 bytes but sizeof(AccessibleObject) is 12 bytes due to padding.
486 // The RoundUp is to get around this case.
487 static constexpr size_t kPackAlignment = 4;
488 size_t expected_size = RoundUp(is_static ? klass->GetClassSize() : klass->GetObjectSize(),
489 kPackAlignment);
490 if (sizeof(T) != expected_size) {
491 LOG(ERROR) << "Class size mismatch:"
492 << " class=" << class_descriptor
493 << " Java=" << expected_size
494 << " C++=" << sizeof(T);
495 error = true;
496 }
497 }
498
499 size_t num_fields = is_static ? klass->NumStaticFields() : klass->NumInstanceFields();
500 if (offsets.size() != num_fields) {
501 LOG(ERROR) << "Field count mismatch:"
502 << " class=" << class_descriptor
503 << " Java=" << num_fields
504 << " C++=" << offsets.size();
505 error = true;
506 }
507
508 for (size_t i = 0; i < offsets.size(); i++) {
509 ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
510 StringPiece field_name(field->GetName());
511 if (field_name != offsets[i].java_name) {
512 error = true;
513 }
514 }
515 if (error) {
516 for (size_t i = 0; i < offsets.size(); i++) {
517 CheckOffset& offset = offsets[i];
518 ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
519 StringPiece field_name(field->GetName());
520 if (field_name != offsets[i].java_name) {
521 LOG(ERROR) << "JAVA FIELD ORDER MISMATCH NEXT LINE:";
522 }
523 LOG(ERROR) << "Java field order:"
524 << " i=" << i << " class=" << class_descriptor
525 << " Java=" << field_name
526 << " CheckOffsets=" << offset.java_name;
527 }
528 }
529
530 for (size_t i = 0; i < offsets.size(); i++) {
531 CheckOffset& offset = offsets[i];
532 ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
533 if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
534 error = true;
535 }
536 }
537 if (error) {
538 for (size_t i = 0; i < offsets.size(); i++) {
539 CheckOffset& offset = offsets[i];
540 ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
541 if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
542 LOG(ERROR) << "OFFSET MISMATCH NEXT LINE:";
543 }
544 LOG(ERROR) << "Offset: class=" << class_descriptor << " field=" << offset.java_name
545 << " Java=" << field->GetOffset().Uint32Value() << " C++=" << offset.cpp_offset;
546 }
547 }
548
549 return !error;
550 };
551
addOffsetart::CheckOffsets552 void addOffset(size_t offset, const char* name) {
553 offsets.push_back(CheckOffset(offset, name));
554 }
555
556 private:
557 DISALLOW_IMPLICIT_CONSTRUCTORS(CheckOffsets);
558 };
559
560 // Note that ClassLinkerTest.ValidateFieldOrderOfJavaCppUnionClasses
561 // is first since if it is failing, others are unlikely to succeed.
562
563 struct ObjectOffsets : public CheckOffsets<mirror::Object> {
ObjectOffsetsart::ObjectOffsets564 ObjectOffsets() : CheckOffsets<mirror::Object>(false, "Ljava/lang/Object;") {
565 addOffset(OFFSETOF_MEMBER(mirror::Object, klass_), "shadow$_klass_");
566 addOffset(OFFSETOF_MEMBER(mirror::Object, monitor_), "shadow$_monitor_");
567 #ifdef USE_BROOKS_READ_BARRIER
568 addOffset(OFFSETOF_MEMBER(mirror::Object, x_rb_ptr_), "shadow$_x_rb_ptr_");
569 addOffset(OFFSETOF_MEMBER(mirror::Object, x_xpadding_), "shadow$_x_xpadding_");
570 #endif
571 };
572 };
573
574 struct ClassOffsets : public CheckOffsets<mirror::Class> {
ClassOffsetsart::ClassOffsets575 ClassOffsets() : CheckOffsets<mirror::Class>(false, "Ljava/lang/Class;") {
576 addOffset(OFFSETOF_MEMBER(mirror::Class, access_flags_), "accessFlags");
577 addOffset(OFFSETOF_MEMBER(mirror::Class, class_flags_), "classFlags");
578 addOffset(OFFSETOF_MEMBER(mirror::Class, class_loader_), "classLoader");
579 addOffset(OFFSETOF_MEMBER(mirror::Class, class_size_), "classSize");
580 addOffset(OFFSETOF_MEMBER(mirror::Class, clinit_thread_id_), "clinitThreadId");
581 addOffset(OFFSETOF_MEMBER(mirror::Class, component_type_), "componentType");
582 addOffset(OFFSETOF_MEMBER(mirror::Class, copied_methods_offset_), "copiedMethodsOffset");
583 addOffset(OFFSETOF_MEMBER(mirror::Class, dex_cache_), "dexCache");
584 addOffset(OFFSETOF_MEMBER(mirror::Class, dex_class_def_idx_), "dexClassDefIndex");
585 addOffset(OFFSETOF_MEMBER(mirror::Class, dex_type_idx_), "dexTypeIndex");
586 addOffset(OFFSETOF_MEMBER(mirror::Class, ext_data_), "extData");
587 addOffset(OFFSETOF_MEMBER(mirror::Class, ifields_), "iFields");
588 addOffset(OFFSETOF_MEMBER(mirror::Class, iftable_), "ifTable");
589 addOffset(OFFSETOF_MEMBER(mirror::Class, methods_), "methods");
590 addOffset(OFFSETOF_MEMBER(mirror::Class, name_), "name");
591 addOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_instance_fields_),
592 "numReferenceInstanceFields");
593 addOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_static_fields_),
594 "numReferenceStaticFields");
595 addOffset(OFFSETOF_MEMBER(mirror::Class, object_size_), "objectSize");
596 addOffset(OFFSETOF_MEMBER(mirror::Class, object_size_alloc_fast_path_),
597 "objectSizeAllocFastPath");
598 addOffset(OFFSETOF_MEMBER(mirror::Class, primitive_type_), "primitiveType");
599 addOffset(OFFSETOF_MEMBER(mirror::Class, reference_instance_offsets_),
600 "referenceInstanceOffsets");
601 addOffset(OFFSETOF_MEMBER(mirror::Class, sfields_), "sFields");
602 addOffset(OFFSETOF_MEMBER(mirror::Class, status_), "status");
603 addOffset(OFFSETOF_MEMBER(mirror::Class, super_class_), "superClass");
604 addOffset(OFFSETOF_MEMBER(mirror::Class, virtual_methods_offset_), "virtualMethodsOffset");
605 addOffset(OFFSETOF_MEMBER(mirror::Class, vtable_), "vtable");
606 };
607 };
608
609 struct ClassExtOffsets : public CheckOffsets<mirror::ClassExt> {
ClassExtOffsetsart::ClassExtOffsets610 ClassExtOffsets() : CheckOffsets<mirror::ClassExt>(false, "Ldalvik/system/ClassExt;") {
611 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, obsolete_dex_caches_), "obsoleteDexCaches");
612 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, obsolete_methods_), "obsoleteMethods");
613 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, original_dex_file_), "originalDexFile");
614 addOffset(OFFSETOF_MEMBER(mirror::ClassExt, verify_error_), "verifyError");
615 }
616 };
617
618 struct StringOffsets : public CheckOffsets<mirror::String> {
StringOffsetsart::StringOffsets619 StringOffsets() : CheckOffsets<mirror::String>(false, "Ljava/lang/String;") {
620 addOffset(OFFSETOF_MEMBER(mirror::String, count_), "count");
621 addOffset(OFFSETOF_MEMBER(mirror::String, hash_code_), "hash");
622 };
623 };
624
625 struct ThrowableOffsets : public CheckOffsets<mirror::Throwable> {
ThrowableOffsetsart::ThrowableOffsets626 ThrowableOffsets() : CheckOffsets<mirror::Throwable>(false, "Ljava/lang/Throwable;") {
627 addOffset(OFFSETOF_MEMBER(mirror::Throwable, backtrace_), "backtrace");
628 addOffset(OFFSETOF_MEMBER(mirror::Throwable, cause_), "cause");
629 addOffset(OFFSETOF_MEMBER(mirror::Throwable, detail_message_), "detailMessage");
630 addOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_trace_), "stackTrace");
631 addOffset(OFFSETOF_MEMBER(mirror::Throwable, suppressed_exceptions_), "suppressedExceptions");
632 };
633 };
634
635 struct StackTraceElementOffsets : public CheckOffsets<mirror::StackTraceElement> {
StackTraceElementOffsetsart::StackTraceElementOffsets636 StackTraceElementOffsets() : CheckOffsets<mirror::StackTraceElement>(
637 false, "Ljava/lang/StackTraceElement;") {
638 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, declaring_class_), "declaringClass");
639 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, file_name_), "fileName");
640 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, line_number_), "lineNumber");
641 addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, method_name_), "methodName");
642 };
643 };
644
645 struct ClassLoaderOffsets : public CheckOffsets<mirror::ClassLoader> {
ClassLoaderOffsetsart::ClassLoaderOffsets646 ClassLoaderOffsets() : CheckOffsets<mirror::ClassLoader>(false, "Ljava/lang/ClassLoader;") {
647 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, allocator_), "allocator");
648 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, class_table_), "classTable");
649 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, packages_), "packages");
650 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, parent_), "parent");
651 addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, proxyCache_), "proxyCache");
652 };
653 };
654
655 struct ProxyOffsets : public CheckOffsets<mirror::Proxy> {
ProxyOffsetsart::ProxyOffsets656 ProxyOffsets() : CheckOffsets<mirror::Proxy>(false, "Ljava/lang/reflect/Proxy;") {
657 addOffset(OFFSETOF_MEMBER(mirror::Proxy, h_), "h");
658 };
659 };
660
661 struct DexCacheOffsets : public CheckOffsets<mirror::DexCache> {
DexCacheOffsetsart::DexCacheOffsets662 DexCacheOffsets() : CheckOffsets<mirror::DexCache>(false, "Ljava/lang/DexCache;") {
663 addOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_file_), "dexFile");
664 addOffset(OFFSETOF_MEMBER(mirror::DexCache, location_), "location");
665 addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_call_sites_), "numResolvedCallSites");
666 addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_fields_), "numResolvedFields");
667 addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_method_types_), "numResolvedMethodTypes");
668 addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_methods_), "numResolvedMethods");
669 addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_types_), "numResolvedTypes");
670 addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_strings_), "numStrings");
671 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_call_sites_), "resolvedCallSites");
672 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_), "resolvedFields");
673 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_method_types_), "resolvedMethodTypes");
674 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_), "resolvedMethods");
675 addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_), "resolvedTypes");
676 addOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_), "strings");
677 };
678 };
679
680 struct ReferenceOffsets : public CheckOffsets<mirror::Reference> {
ReferenceOffsetsart::ReferenceOffsets681 ReferenceOffsets() : CheckOffsets<mirror::Reference>(false, "Ljava/lang/ref/Reference;") {
682 addOffset(OFFSETOF_MEMBER(mirror::Reference, pending_next_), "pendingNext");
683 addOffset(OFFSETOF_MEMBER(mirror::Reference, queue_), "queue");
684 addOffset(OFFSETOF_MEMBER(mirror::Reference, queue_next_), "queueNext");
685 addOffset(OFFSETOF_MEMBER(mirror::Reference, referent_), "referent");
686 };
687 };
688
689 struct FinalizerReferenceOffsets : public CheckOffsets<mirror::FinalizerReference> {
FinalizerReferenceOffsetsart::FinalizerReferenceOffsets690 FinalizerReferenceOffsets() : CheckOffsets<mirror::FinalizerReference>(
691 false, "Ljava/lang/ref/FinalizerReference;") {
692 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, next_), "next");
693 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, prev_), "prev");
694 addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, zombie_), "zombie");
695 };
696 };
697
698 struct AccessibleObjectOffsets : public CheckOffsets<mirror::AccessibleObject> {
AccessibleObjectOffsetsart::AccessibleObjectOffsets699 AccessibleObjectOffsets() : CheckOffsets<mirror::AccessibleObject>(
700 false, "Ljava/lang/reflect/AccessibleObject;") {
701 addOffset(mirror::AccessibleObject::FlagOffset().Uint32Value(), "override");
702 };
703 };
704
705 struct FieldOffsets : public CheckOffsets<mirror::Field> {
FieldOffsetsart::FieldOffsets706 FieldOffsets() : CheckOffsets<mirror::Field>(false, "Ljava/lang/reflect/Field;") {
707 addOffset(OFFSETOF_MEMBER(mirror::Field, access_flags_), "accessFlags");
708 addOffset(OFFSETOF_MEMBER(mirror::Field, declaring_class_), "declaringClass");
709 addOffset(OFFSETOF_MEMBER(mirror::Field, dex_field_index_), "dexFieldIndex");
710 addOffset(OFFSETOF_MEMBER(mirror::Field, offset_), "offset");
711 addOffset(OFFSETOF_MEMBER(mirror::Field, type_), "type");
712 };
713 };
714
715 struct ExecutableOffsets : public CheckOffsets<mirror::Executable> {
ExecutableOffsetsart::ExecutableOffsets716 ExecutableOffsets() : CheckOffsets<mirror::Executable>(
717 false, "Ljava/lang/reflect/Executable;") {
718 addOffset(OFFSETOF_MEMBER(mirror::Executable, access_flags_), "accessFlags");
719 addOffset(OFFSETOF_MEMBER(mirror::Executable, art_method_), "artMethod");
720 addOffset(OFFSETOF_MEMBER(mirror::Executable, declaring_class_), "declaringClass");
721 addOffset(OFFSETOF_MEMBER(mirror::Executable, declaring_class_of_overridden_method_),
722 "declaringClassOfOverriddenMethod");
723 addOffset(OFFSETOF_MEMBER(mirror::Executable, dex_method_index_), "dexMethodIndex");
724 addOffset(OFFSETOF_MEMBER(mirror::Executable, has_real_parameter_data_),
725 "hasRealParameterData");
726 addOffset(OFFSETOF_MEMBER(mirror::Executable, parameters_), "parameters");
727 };
728 };
729
730 struct MethodTypeOffsets : public CheckOffsets<mirror::MethodType> {
MethodTypeOffsetsart::MethodTypeOffsets731 MethodTypeOffsets() : CheckOffsets<mirror::MethodType>(
732 false, "Ljava/lang/invoke/MethodType;") {
733 addOffset(OFFSETOF_MEMBER(mirror::MethodType, form_), "form");
734 addOffset(OFFSETOF_MEMBER(mirror::MethodType, method_descriptor_), "methodDescriptor");
735 addOffset(OFFSETOF_MEMBER(mirror::MethodType, p_types_), "ptypes");
736 addOffset(OFFSETOF_MEMBER(mirror::MethodType, r_type_), "rtype");
737 addOffset(OFFSETOF_MEMBER(mirror::MethodType, wrap_alt_), "wrapAlt");
738 }
739 };
740
741 struct MethodHandleOffsets : public CheckOffsets<mirror::MethodHandle> {
MethodHandleOffsetsart::MethodHandleOffsets742 MethodHandleOffsets() : CheckOffsets<mirror::MethodHandle>(
743 false, "Ljava/lang/invoke/MethodHandle;") {
744 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, art_field_or_method_), "artFieldOrMethod");
745 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, cached_spread_invoker_),
746 "cachedSpreadInvoker");
747 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, handle_kind_), "handleKind");
748 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, nominal_type_), "nominalType");
749 addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, method_type_), "type");
750 }
751 };
752
753 struct MethodHandleImplOffsets : public CheckOffsets<mirror::MethodHandleImpl> {
MethodHandleImplOffsetsart::MethodHandleImplOffsets754 MethodHandleImplOffsets() : CheckOffsets<mirror::MethodHandleImpl>(
755 false, "Ljava/lang/invoke/MethodHandleImpl;") {
756 addOffset(OFFSETOF_MEMBER(mirror::MethodHandleImpl, info_), "info");
757 }
758 };
759
760 struct MethodHandlesLookupOffsets : public CheckOffsets<mirror::MethodHandlesLookup> {
MethodHandlesLookupOffsetsart::MethodHandlesLookupOffsets761 MethodHandlesLookupOffsets() : CheckOffsets<mirror::MethodHandlesLookup>(
762 false, "Ljava/lang/invoke/MethodHandles$Lookup;") {
763 addOffset(OFFSETOF_MEMBER(mirror::MethodHandlesLookup, allowed_modes_), "allowedModes");
764 addOffset(OFFSETOF_MEMBER(mirror::MethodHandlesLookup, lookup_class_), "lookupClass");
765 }
766 };
767
768 struct EmulatedStackFrameOffsets : public CheckOffsets<mirror::EmulatedStackFrame> {
EmulatedStackFrameOffsetsart::EmulatedStackFrameOffsets769 EmulatedStackFrameOffsets() : CheckOffsets<mirror::EmulatedStackFrame>(
770 false, "Ldalvik/system/EmulatedStackFrame;") {
771 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, callsite_type_), "callsiteType");
772 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, references_), "references");
773 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, stack_frame_), "stackFrame");
774 addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, type_), "type");
775 }
776 };
777
778 struct CallSiteOffsets : public CheckOffsets<mirror::CallSite> {
CallSiteOffsetsart::CallSiteOffsets779 CallSiteOffsets() : CheckOffsets<mirror::CallSite>(
780 false, "Ljava/lang/invoke/CallSite;") {
781 addOffset(OFFSETOF_MEMBER(mirror::CallSite, target_), "target");
782 }
783 };
784
785 // C++ fields must exactly match the fields in the Java classes. If this fails,
786 // reorder the fields in the C++ class. Managed class fields are ordered by
787 // ClassLinker::LinkFields.
TEST_F(ClassLinkerTest,ValidateFieldOrderOfJavaCppUnionClasses)788 TEST_F(ClassLinkerTest, ValidateFieldOrderOfJavaCppUnionClasses) {
789 ScopedObjectAccess soa(Thread::Current());
790 EXPECT_TRUE(ObjectOffsets().Check());
791 EXPECT_TRUE(ClassOffsets().Check());
792 EXPECT_TRUE(ClassExtOffsets().Check());
793 EXPECT_TRUE(StringOffsets().Check());
794 EXPECT_TRUE(ThrowableOffsets().Check());
795 EXPECT_TRUE(StackTraceElementOffsets().Check());
796 EXPECT_TRUE(ClassLoaderOffsets().Check());
797 EXPECT_TRUE(ProxyOffsets().Check());
798 EXPECT_TRUE(DexCacheOffsets().Check());
799 EXPECT_TRUE(ReferenceOffsets().Check());
800 EXPECT_TRUE(FinalizerReferenceOffsets().Check());
801 EXPECT_TRUE(AccessibleObjectOffsets().Check());
802 EXPECT_TRUE(FieldOffsets().Check());
803 EXPECT_TRUE(ExecutableOffsets().Check());
804 EXPECT_TRUE(MethodTypeOffsets().Check());
805 EXPECT_TRUE(MethodHandleOffsets().Check());
806 EXPECT_TRUE(MethodHandleImplOffsets().Check());
807 EXPECT_TRUE(MethodHandlesLookupOffsets().Check());
808 EXPECT_TRUE(EmulatedStackFrameOffsets().Check());
809 EXPECT_TRUE(CallSiteOffsets().Check());
810 }
811
TEST_F(ClassLinkerTest,FindClassNonexistent)812 TEST_F(ClassLinkerTest, FindClassNonexistent) {
813 ScopedObjectAccess soa(Thread::Current());
814 AssertNonExistentClass("NoSuchClass;");
815 AssertNonExistentClass("LNoSuchClass;");
816 }
817
TEST_F(ClassLinkerTest,GetDexFiles)818 TEST_F(ClassLinkerTest, GetDexFiles) {
819 ScopedObjectAccess soa(Thread::Current());
820
821 jobject jclass_loader = LoadDex("Nested");
822 std::vector<const DexFile*> dex_files(GetDexFiles(jclass_loader));
823 ASSERT_EQ(dex_files.size(), 1U);
824 EXPECT_TRUE(android::base::EndsWith(dex_files[0]->GetLocation(), "Nested.jar"));
825
826 jobject jclass_loader2 = LoadDex("MultiDex");
827 std::vector<const DexFile*> dex_files2(GetDexFiles(jclass_loader2));
828 ASSERT_EQ(dex_files2.size(), 2U);
829 EXPECT_TRUE(android::base::EndsWith(dex_files2[0]->GetLocation(), "MultiDex.jar"));
830 }
831
TEST_F(ClassLinkerTest,FindClassNested)832 TEST_F(ClassLinkerTest, FindClassNested) {
833 ScopedObjectAccess soa(Thread::Current());
834 StackHandleScope<1> hs(soa.Self());
835 Handle<mirror::ClassLoader> class_loader(
836 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Nested"))));
837
838 mirror::Class* outer = class_linker_->FindClass(soa.Self(), "LNested;", class_loader);
839 ASSERT_TRUE(outer != nullptr);
840 EXPECT_EQ(0U, outer->NumVirtualMethods());
841 EXPECT_EQ(1U, outer->NumDirectMethods());
842
843 mirror::Class* inner = class_linker_->FindClass(soa.Self(), "LNested$Inner;", class_loader);
844 ASSERT_TRUE(inner != nullptr);
845 EXPECT_EQ(0U, inner->NumVirtualMethods());
846 EXPECT_EQ(1U, inner->NumDirectMethods());
847 }
848
TEST_F(ClassLinkerTest,FindClass_Primitives)849 TEST_F(ClassLinkerTest, FindClass_Primitives) {
850 ScopedObjectAccess soa(Thread::Current());
851 const std::string expected("BCDFIJSZV");
852 for (int ch = 1; ch < 256; ++ch) {
853 std::string descriptor;
854 descriptor.push_back(ch);
855 if (expected.find(ch) == std::string::npos) {
856 AssertNonExistentClass(descriptor);
857 } else {
858 AssertPrimitiveClass(descriptor);
859 }
860 }
861 }
862
TEST_F(ClassLinkerTest,FindClass)863 TEST_F(ClassLinkerTest, FindClass) {
864 ScopedObjectAccess soa(Thread::Current());
865 mirror::Class* JavaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
866 AssertObjectClass(JavaLangObject);
867
868 StackHandleScope<1> hs(soa.Self());
869 Handle<mirror::ClassLoader> class_loader(
870 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
871 AssertNonExistentClass("LMyClass;");
872 mirror::Class* MyClass = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader);
873 ASSERT_TRUE(MyClass != nullptr);
874 ASSERT_TRUE(MyClass->GetClass() != nullptr);
875 ASSERT_EQ(MyClass->GetClass(), MyClass->GetClass()->GetClass());
876 EXPECT_EQ(JavaLangObject, MyClass->GetClass()->GetSuperClass());
877 std::string temp;
878 ASSERT_STREQ(MyClass->GetDescriptor(&temp), "LMyClass;");
879 EXPECT_TRUE(MyClass->GetSuperClass() == JavaLangObject);
880 EXPECT_TRUE(MyClass->HasSuperClass());
881 EXPECT_EQ(class_loader.Get(), MyClass->GetClassLoader());
882 EXPECT_EQ(mirror::Class::kStatusResolved, MyClass->GetStatus());
883 EXPECT_FALSE(MyClass->IsErroneous());
884 EXPECT_TRUE(MyClass->IsLoaded());
885 EXPECT_TRUE(MyClass->IsResolved());
886 EXPECT_FALSE(MyClass->IsErroneousResolved());
887 EXPECT_FALSE(MyClass->IsVerified());
888 EXPECT_FALSE(MyClass->IsInitialized());
889 EXPECT_FALSE(MyClass->IsArrayInstance());
890 EXPECT_FALSE(MyClass->IsArrayClass());
891 EXPECT_TRUE(MyClass->GetComponentType() == nullptr);
892 EXPECT_FALSE(MyClass->IsInterface());
893 EXPECT_FALSE(MyClass->IsPublic());
894 EXPECT_FALSE(MyClass->IsFinal());
895 EXPECT_FALSE(MyClass->IsPrimitive());
896 EXPECT_FALSE(MyClass->IsSynthetic());
897 EXPECT_EQ(1U, MyClass->NumDirectMethods());
898 EXPECT_EQ(0U, MyClass->NumVirtualMethods());
899 EXPECT_EQ(0U, MyClass->NumInstanceFields());
900 EXPECT_EQ(0U, MyClass->NumStaticFields());
901 EXPECT_EQ(0U, MyClass->NumDirectInterfaces());
902
903 EXPECT_EQ(JavaLangObject->GetClass()->GetClass(), MyClass->GetClass()->GetClass());
904
905 // created by class_linker
906 AssertArrayClass("[C", "C", nullptr);
907 AssertArrayClass("[Ljava/lang/Object;", "Ljava/lang/Object;", nullptr);
908 // synthesized on the fly
909 AssertArrayClass("[[C", "[C", nullptr);
910 AssertArrayClass("[[[LMyClass;", "[[LMyClass;", class_loader.Get());
911 // or not available at all
912 AssertNonExistentClass("[[[[LNonExistentClass;");
913 }
914
TEST_F(ClassLinkerTest,LookupResolvedType)915 TEST_F(ClassLinkerTest, LookupResolvedType) {
916 ScopedObjectAccess soa(Thread::Current());
917 StackHandleScope<1> hs(soa.Self());
918 Handle<mirror::ClassLoader> class_loader(
919 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
920 AssertNonExistentClass("LMyClass;");
921 ObjPtr<mirror::Class> klass = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader);
922 dex::TypeIndex type_idx = klass->GetClassDef()->class_idx_;
923 ObjPtr<mirror::DexCache> dex_cache = klass->GetDexCache();
924 const DexFile& dex_file = klass->GetDexFile();
925 EXPECT_OBJ_PTR_EQ(
926 class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache, class_loader.Get()),
927 klass);
928 // Zero out the resolved type and make sure LookupResolvedType still finds it.
929 dex_cache->ClearResolvedType(type_idx);
930 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
931 EXPECT_OBJ_PTR_EQ(
932 class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache, class_loader.Get()),
933 klass);
934 }
935
TEST_F(ClassLinkerTest,LookupResolvedTypeArray)936 TEST_F(ClassLinkerTest, LookupResolvedTypeArray) {
937 ScopedObjectAccess soa(Thread::Current());
938 StackHandleScope<2> hs(soa.Self());
939 Handle<mirror::ClassLoader> class_loader(
940 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("AllFields"))));
941 // Get the AllFields class for the dex cache and dex file.
942 ObjPtr<mirror::Class> all_fields_klass
943 = class_linker_->FindClass(soa.Self(), "LAllFields;", class_loader);
944 ASSERT_OBJ_PTR_NE(all_fields_klass, ObjPtr<mirror::Class>(nullptr));
945 Handle<mirror::DexCache> dex_cache = hs.NewHandle(all_fields_klass->GetDexCache());
946 const DexFile& dex_file = *dex_cache->GetDexFile();
947 // Get the index of the array class we want to test.
948 const DexFile::TypeId* array_id = dex_file.FindTypeId("[Ljava/lang/Object;");
949 ASSERT_TRUE(array_id != nullptr);
950 dex::TypeIndex array_idx = dex_file.GetIndexForTypeId(*array_id);
951 // Check that the array class wasn't resolved yet.
952 EXPECT_OBJ_PTR_EQ(
953 class_linker_->LookupResolvedType(dex_file, array_idx, dex_cache.Get(), class_loader.Get()),
954 ObjPtr<mirror::Class>(nullptr));
955 // Resolve the array class we want to test.
956 ObjPtr<mirror::Class> array_klass
957 = class_linker_->FindClass(soa.Self(), "[Ljava/lang/Object;", class_loader);
958 ASSERT_OBJ_PTR_NE(array_klass, ObjPtr<mirror::Class>(nullptr));
959 // Test that LookupResolvedType() finds the array class.
960 EXPECT_OBJ_PTR_EQ(
961 class_linker_->LookupResolvedType(dex_file, array_idx, dex_cache.Get(), class_loader.Get()),
962 array_klass);
963 // Zero out the resolved type and make sure LookupResolvedType() still finds it.
964 dex_cache->ClearResolvedType(array_idx);
965 EXPECT_TRUE(dex_cache->GetResolvedType(array_idx) == nullptr);
966 EXPECT_OBJ_PTR_EQ(
967 class_linker_->LookupResolvedType(dex_file, array_idx, dex_cache.Get(), class_loader.Get()),
968 array_klass);
969 }
970
TEST_F(ClassLinkerTest,LookupResolvedTypeErroneousInit)971 TEST_F(ClassLinkerTest, LookupResolvedTypeErroneousInit) {
972 ScopedObjectAccess soa(Thread::Current());
973 StackHandleScope<3> hs(soa.Self());
974 Handle<mirror::ClassLoader> class_loader(
975 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("ErroneousInit"))));
976 AssertNonExistentClass("LErroneousInit;");
977 Handle<mirror::Class> klass =
978 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LErroneousInit;", class_loader));
979 ASSERT_OBJ_PTR_NE(klass.Get(), ObjPtr<mirror::Class>(nullptr));
980 dex::TypeIndex type_idx = klass->GetClassDef()->class_idx_;
981 Handle<mirror::DexCache> dex_cache = hs.NewHandle(klass->GetDexCache());
982 const DexFile& dex_file = klass->GetDexFile();
983 EXPECT_OBJ_PTR_EQ(
984 class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache.Get(), class_loader.Get()),
985 klass.Get());
986 // Zero out the resolved type and make sure LookupResolvedType still finds it.
987 dex_cache->ClearResolvedType(type_idx);
988 EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
989 EXPECT_OBJ_PTR_EQ(
990 class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache.Get(), class_loader.Get()),
991 klass.Get());
992 // Force initialization to turn the class erroneous.
993 bool initialized = class_linker_->EnsureInitialized(soa.Self(),
994 klass,
995 /* can_init_fields */ true,
996 /* can_init_parents */ true);
997 EXPECT_FALSE(initialized);
998 EXPECT_TRUE(soa.Self()->IsExceptionPending());
999 soa.Self()->ClearException();
1000 // Check that the LookupResolvedType() can still find the resolved type.
1001 EXPECT_OBJ_PTR_EQ(
1002 class_linker_->LookupResolvedType(dex_file, type_idx, dex_cache.Get(), class_loader.Get()),
1003 klass.Get());
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(dex_file, type_idx, dex_cache.Get(), class_loader.Get()),
1009 klass.Get());
1010 }
1011
TEST_F(ClassLinkerTest,LibCore)1012 TEST_F(ClassLinkerTest, LibCore) {
1013 ScopedObjectAccess soa(Thread::Current());
1014 ASSERT_TRUE(java_lang_dex_file_ != nullptr);
1015 AssertDexFile(*java_lang_dex_file_, nullptr);
1016 }
1017
1018 // The first reference array element must be a multiple of 4 bytes from the
1019 // start of the object
TEST_F(ClassLinkerTest,ValidateObjectArrayElementsOffset)1020 TEST_F(ClassLinkerTest, ValidateObjectArrayElementsOffset) {
1021 ScopedObjectAccess soa(Thread::Current());
1022 mirror::Class* array_class = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
1023 mirror::ObjectArray<mirror::String>* array =
1024 mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), array_class, 0);
1025 uintptr_t data_offset =
1026 reinterpret_cast<uintptr_t>(array->GetRawData(sizeof(mirror::HeapReference<mirror::String>),
1027 0));
1028 if (sizeof(mirror::HeapReference<mirror::String>) == sizeof(int32_t)) {
1029 EXPECT_TRUE(IsAligned<4>(data_offset)); // Check 4 byte alignment.
1030 } else {
1031 EXPECT_TRUE(IsAligned<8>(data_offset)); // Check 8 byte alignment.
1032 }
1033 }
1034
TEST_F(ClassLinkerTest,ValidatePrimitiveArrayElementsOffset)1035 TEST_F(ClassLinkerTest, ValidatePrimitiveArrayElementsOffset) {
1036 ScopedObjectAccess soa(Thread::Current());
1037 StackHandleScope<5> hs(soa.Self());
1038 Handle<mirror::LongArray> long_array(hs.NewHandle(mirror::LongArray::Alloc(soa.Self(), 0)));
1039 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[J"), long_array->GetClass());
1040 uintptr_t data_offset = reinterpret_cast<uintptr_t>(long_array->GetData());
1041 EXPECT_TRUE(IsAligned<8>(data_offset)); // Longs require 8 byte alignment
1042
1043 Handle<mirror::DoubleArray> double_array(hs.NewHandle(mirror::DoubleArray::Alloc(soa.Self(), 0)));
1044 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[D"), double_array->GetClass());
1045 data_offset = reinterpret_cast<uintptr_t>(double_array->GetData());
1046 EXPECT_TRUE(IsAligned<8>(data_offset)); // Doubles require 8 byte alignment
1047
1048 Handle<mirror::IntArray> int_array(hs.NewHandle(mirror::IntArray::Alloc(soa.Self(), 0)));
1049 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[I"), int_array->GetClass());
1050 data_offset = reinterpret_cast<uintptr_t>(int_array->GetData());
1051 EXPECT_TRUE(IsAligned<4>(data_offset)); // Ints require 4 byte alignment
1052
1053 Handle<mirror::CharArray> char_array(hs.NewHandle(mirror::CharArray::Alloc(soa.Self(), 0)));
1054 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[C"), char_array->GetClass());
1055 data_offset = reinterpret_cast<uintptr_t>(char_array->GetData());
1056 EXPECT_TRUE(IsAligned<2>(data_offset)); // Chars require 2 byte alignment
1057
1058 Handle<mirror::ShortArray> short_array(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 0)));
1059 EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[S"), short_array->GetClass());
1060 data_offset = reinterpret_cast<uintptr_t>(short_array->GetData());
1061 EXPECT_TRUE(IsAligned<2>(data_offset)); // Shorts require 2 byte alignment
1062
1063 // Take it as given that bytes and booleans have byte alignment
1064 }
1065
TEST_F(ClassLinkerTest,ValidateBoxedTypes)1066 TEST_F(ClassLinkerTest, ValidateBoxedTypes) {
1067 // Validate that the "value" field is always the 0th field in each of java.lang's box classes.
1068 // This lets UnboxPrimitive avoid searching for the field by name at runtime.
1069 ScopedObjectAccess soa(Thread::Current());
1070 ScopedNullHandle<mirror::ClassLoader> class_loader;
1071 mirror::Class* c;
1072 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Boolean;", class_loader);
1073 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1074 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Byte;", class_loader);
1075 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1076 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Character;", class_loader);
1077 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1078 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Double;", class_loader);
1079 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1080 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Float;", class_loader);
1081 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1082 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Integer;", class_loader);
1083 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1084 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Long;", class_loader);
1085 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1086 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Short;", class_loader);
1087 EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
1088 }
1089
TEST_F(ClassLinkerTest,TwoClassLoadersOneClass)1090 TEST_F(ClassLinkerTest, TwoClassLoadersOneClass) {
1091 ScopedObjectAccess soa(Thread::Current());
1092 StackHandleScope<2> hs(soa.Self());
1093 Handle<mirror::ClassLoader> class_loader_1(
1094 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
1095 Handle<mirror::ClassLoader> class_loader_2(
1096 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
1097 mirror::Class* MyClass_1 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_1);
1098 mirror::Class* MyClass_2 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_2);
1099 EXPECT_TRUE(MyClass_1 != nullptr);
1100 EXPECT_TRUE(MyClass_2 != nullptr);
1101 EXPECT_NE(MyClass_1, MyClass_2);
1102 }
1103
TEST_F(ClassLinkerTest,StaticFields)1104 TEST_F(ClassLinkerTest, StaticFields) {
1105 ScopedObjectAccess soa(Thread::Current());
1106 StackHandleScope<2> hs(soa.Self());
1107 Handle<mirror::ClassLoader> class_loader(
1108 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1109 Handle<mirror::Class> statics(
1110 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
1111 class_linker_->EnsureInitialized(soa.Self(), statics, true, true);
1112
1113 // Static final primitives that are initialized by a compile-time constant
1114 // expression resolve to a copy of a constant value from the constant pool.
1115 // So <clinit> should be null.
1116 ArtMethod* clinit = statics->FindClassMethod("<clinit>", "()V", kRuntimePointerSize);
1117 EXPECT_TRUE(clinit == nullptr);
1118
1119 EXPECT_EQ(9U, statics->NumStaticFields());
1120
1121 ArtField* s0 = mirror::Class::FindStaticField(soa.Self(), statics.Get(), "s0", "Z");
1122 EXPECT_EQ(s0->GetTypeAsPrimitiveType(), Primitive::kPrimBoolean);
1123 EXPECT_EQ(true, s0->GetBoolean(statics.Get()));
1124 s0->SetBoolean<false>(statics.Get(), false);
1125
1126 ArtField* s1 = mirror::Class::FindStaticField(soa.Self(), statics.Get(), "s1", "B");
1127 EXPECT_EQ(s1->GetTypeAsPrimitiveType(), Primitive::kPrimByte);
1128 EXPECT_EQ(5, s1->GetByte(statics.Get()));
1129 s1->SetByte<false>(statics.Get(), 6);
1130
1131 ArtField* s2 = mirror::Class::FindStaticField(soa.Self(), statics.Get(), "s2", "C");
1132 EXPECT_EQ(s2->GetTypeAsPrimitiveType(), Primitive::kPrimChar);
1133 EXPECT_EQ('a', s2->GetChar(statics.Get()));
1134 s2->SetChar<false>(statics.Get(), 'b');
1135
1136 ArtField* s3 = mirror::Class::FindStaticField(soa.Self(), statics.Get(), "s3", "S");
1137 EXPECT_EQ(s3->GetTypeAsPrimitiveType(), Primitive::kPrimShort);
1138 EXPECT_EQ(-536, s3->GetShort(statics.Get()));
1139 s3->SetShort<false>(statics.Get(), -535);
1140
1141 ArtField* s4 = mirror::Class::FindStaticField(soa.Self(), statics.Get(), "s4", "I");
1142 EXPECT_EQ(s4->GetTypeAsPrimitiveType(), Primitive::kPrimInt);
1143 EXPECT_EQ(2000000000, s4->GetInt(statics.Get()));
1144 s4->SetInt<false>(statics.Get(), 2000000001);
1145
1146 ArtField* s5 = mirror::Class::FindStaticField(soa.Self(), statics.Get(), "s5", "J");
1147 EXPECT_EQ(s5->GetTypeAsPrimitiveType(), Primitive::kPrimLong);
1148 EXPECT_EQ(0x1234567890abcdefLL, s5->GetLong(statics.Get()));
1149 s5->SetLong<false>(statics.Get(), INT64_C(0x34567890abcdef12));
1150
1151 ArtField* s6 = mirror::Class::FindStaticField(soa.Self(), statics.Get(), "s6", "F");
1152 EXPECT_EQ(s6->GetTypeAsPrimitiveType(), Primitive::kPrimFloat);
1153 EXPECT_DOUBLE_EQ(0.5, s6->GetFloat(statics.Get()));
1154 s6->SetFloat<false>(statics.Get(), 0.75);
1155
1156 ArtField* s7 = mirror::Class::FindStaticField(soa.Self(), statics.Get(), "s7", "D");
1157 EXPECT_EQ(s7->GetTypeAsPrimitiveType(), Primitive::kPrimDouble);
1158 EXPECT_DOUBLE_EQ(16777217.0, s7->GetDouble(statics.Get()));
1159 s7->SetDouble<false>(statics.Get(), 16777219);
1160
1161 ArtField* s8 = mirror::Class::FindStaticField(
1162 soa.Self(), statics.Get(), "s8", "Ljava/lang/String;");
1163 EXPECT_EQ(s8->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
1164 EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("android"));
1165 mirror::String* str_value = mirror::String::AllocFromModifiedUtf8(soa.Self(), "robot");
1166 s8->SetObject<false>(s8->GetDeclaringClass(), str_value);
1167
1168 // TODO: Remove EXPECT_FALSE when GCC can handle EXPECT_EQ
1169 // http://code.google.com/p/googletest/issues/detail?id=322
1170 EXPECT_FALSE(s0->GetBoolean(statics.Get()));
1171 EXPECT_EQ(6, s1->GetByte(statics.Get()));
1172 EXPECT_EQ('b', s2->GetChar(statics.Get()));
1173 EXPECT_EQ(-535, s3->GetShort(statics.Get()));
1174 EXPECT_EQ(2000000001, s4->GetInt(statics.Get()));
1175 EXPECT_EQ(INT64_C(0x34567890abcdef12), s5->GetLong(statics.Get()));
1176 EXPECT_FLOAT_EQ(0.75, s6->GetFloat(statics.Get()));
1177 EXPECT_DOUBLE_EQ(16777219.0, s7->GetDouble(statics.Get()));
1178 EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("robot"));
1179 }
1180
TEST_F(ClassLinkerTest,Interfaces)1181 TEST_F(ClassLinkerTest, Interfaces) {
1182 ScopedObjectAccess soa(Thread::Current());
1183 StackHandleScope<6> hs(soa.Self());
1184 Handle<mirror::ClassLoader> class_loader(
1185 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Interfaces"))));
1186 Handle<mirror::Class> I(
1187 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
1188 Handle<mirror::Class> J(
1189 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
1190 Handle<mirror::Class> K(
1191 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$K;", class_loader)));
1192 Handle<mirror::Class> A(
1193 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$A;", class_loader)));
1194 Handle<mirror::Class> B(
1195 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$B;", class_loader)));
1196 EXPECT_TRUE(I->IsAssignableFrom(A.Get()));
1197 EXPECT_TRUE(J->IsAssignableFrom(A.Get()));
1198 EXPECT_TRUE(J->IsAssignableFrom(K.Get()));
1199 EXPECT_TRUE(K->IsAssignableFrom(B.Get()));
1200 EXPECT_TRUE(J->IsAssignableFrom(B.Get()));
1201
1202 const Signature void_sig = I->GetDexCache()->GetDexFile()->CreateSignature("()V");
1203 ArtMethod* Ii = I->FindClassMethod("i", void_sig, kRuntimePointerSize);
1204 ArtMethod* Jj1 = J->FindClassMethod("j1", void_sig, kRuntimePointerSize);
1205 ArtMethod* Jj2 = J->FindClassMethod("j2", void_sig, kRuntimePointerSize);
1206 ArtMethod* Kj1 = K->FindInterfaceMethod("j1", void_sig, kRuntimePointerSize);
1207 ArtMethod* Kj2 = K->FindInterfaceMethod("j2", void_sig, kRuntimePointerSize);
1208 ArtMethod* Kk = K->FindInterfaceMethod("k", void_sig, kRuntimePointerSize);
1209 ArtMethod* Ai = A->FindClassMethod("i", void_sig, kRuntimePointerSize);
1210 ArtMethod* Aj1 = A->FindClassMethod("j1", void_sig, kRuntimePointerSize);
1211 ArtMethod* Aj2 = A->FindClassMethod("j2", void_sig, kRuntimePointerSize);
1212 ASSERT_TRUE(Ii != nullptr);
1213 ASSERT_FALSE(Ii->IsDirect());
1214 ASSERT_TRUE(Jj1 != nullptr);
1215 ASSERT_FALSE(Jj1->IsDirect());
1216 ASSERT_TRUE(Jj2 != nullptr);
1217 ASSERT_FALSE(Jj2->IsDirect());
1218 ASSERT_TRUE(Kj1 != nullptr);
1219 ASSERT_TRUE(Kj2 != nullptr);
1220 ASSERT_TRUE(Kk != nullptr);
1221 ASSERT_TRUE(Ai != nullptr);
1222 ASSERT_FALSE(Ai->IsDirect());
1223 ASSERT_TRUE(Aj1 != nullptr);
1224 ASSERT_FALSE(Aj1->IsDirect());
1225 ASSERT_TRUE(Aj2 != nullptr);
1226 ASSERT_FALSE(Aj2->IsDirect());
1227 EXPECT_NE(Ii, Ai);
1228 EXPECT_NE(Jj1, Aj1);
1229 EXPECT_NE(Jj2, Aj2);
1230 EXPECT_EQ(Kj1, Jj1);
1231 EXPECT_EQ(Kj2, Jj2);
1232 EXPECT_EQ(Ai, A->FindVirtualMethodForInterface(Ii, kRuntimePointerSize));
1233 EXPECT_EQ(Aj1, A->FindVirtualMethodForInterface(Jj1, kRuntimePointerSize));
1234 EXPECT_EQ(Aj2, A->FindVirtualMethodForInterface(Jj2, kRuntimePointerSize));
1235 EXPECT_EQ(Ai, A->FindVirtualMethodForVirtualOrInterface(Ii, kRuntimePointerSize));
1236 EXPECT_EQ(Aj1, A->FindVirtualMethodForVirtualOrInterface(Jj1, kRuntimePointerSize));
1237 EXPECT_EQ(Aj2, A->FindVirtualMethodForVirtualOrInterface(Jj2, kRuntimePointerSize));
1238
1239 ArtField* Afoo =
1240 mirror::Class::FindStaticField(soa.Self(), A.Get(), "foo", "Ljava/lang/String;");
1241 ArtField* Bfoo =
1242 mirror::Class::FindStaticField(soa.Self(), B.Get(), "foo", "Ljava/lang/String;");
1243 ArtField* Jfoo =
1244 mirror::Class::FindStaticField(soa.Self(), J.Get(), "foo", "Ljava/lang/String;");
1245 ArtField* Kfoo =
1246 mirror::Class::FindStaticField(soa.Self(), K.Get(), "foo", "Ljava/lang/String;");
1247 ASSERT_TRUE(Afoo != nullptr);
1248 EXPECT_EQ(Afoo, Bfoo);
1249 EXPECT_EQ(Afoo, Jfoo);
1250 EXPECT_EQ(Afoo, Kfoo);
1251 }
1252
TEST_F(ClassLinkerTest,ResolveVerifyAndClinit)1253 TEST_F(ClassLinkerTest, ResolveVerifyAndClinit) {
1254 // pretend we are trying to get the static storage for the StaticsFromCode class.
1255
1256 // case 1, get the uninitialized storage from StaticsFromCode.<clinit>
1257 // case 2, get the initialized storage from StaticsFromCode.getS0
1258
1259 ScopedObjectAccess soa(Thread::Current());
1260 jobject jclass_loader = LoadDex("StaticsFromCode");
1261 const DexFile* dex_file = GetFirstDexFile(jclass_loader);
1262 StackHandleScope<1> hs(soa.Self());
1263 Handle<mirror::ClassLoader> class_loader(
1264 hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
1265 mirror::Class* klass = class_linker_->FindClass(soa.Self(), "LStaticsFromCode;", class_loader);
1266 ArtMethod* clinit = klass->FindClassInitializer(kRuntimePointerSize);
1267 ArtMethod* getS0 =
1268 klass->FindClassMethod("getS0", "()Ljava/lang/Object;", kRuntimePointerSize);
1269 ASSERT_TRUE(getS0 != nullptr);
1270 ASSERT_TRUE(getS0->IsStatic());
1271 const DexFile::TypeId* type_id = dex_file->FindTypeId("LStaticsFromCode;");
1272 ASSERT_TRUE(type_id != nullptr);
1273 dex::TypeIndex type_idx = dex_file->GetIndexForTypeId(*type_id);
1274 mirror::Class* uninit = ResolveVerifyAndClinit(type_idx, clinit, soa.Self(), true, false);
1275 EXPECT_TRUE(uninit != nullptr);
1276 EXPECT_FALSE(uninit->IsInitialized());
1277 mirror::Class* init = ResolveVerifyAndClinit(type_idx, getS0, soa.Self(), true, false);
1278 EXPECT_TRUE(init != nullptr);
1279 EXPECT_TRUE(init->IsInitialized());
1280 }
1281
TEST_F(ClassLinkerTest,ErroneousClass)1282 TEST_F(ClassLinkerTest, ErroneousClass) {
1283 ScopedObjectAccess soa(Thread::Current());
1284 jobject jclass_loader = LoadMultiDex("ErroneousA", "ErroneousB");
1285 StackHandleScope<1> hs(soa.Self());
1286 Handle<mirror::ClassLoader> class_loader(
1287 hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
1288 hs.Self()->AssertNoPendingException();
1289 const char* descriptor = "LErroneous;";
1290 ObjPtr<mirror::Class> klass = class_linker_->FindClass(soa.Self(), descriptor, class_loader);
1291 // Erronenous since we are extending final class.
1292 hs.Self()->AssertPendingException();
1293 EXPECT_TRUE(klass == nullptr);
1294 klass = class_linker_->LookupClass(soa.Self(), descriptor, class_loader.Get());
1295 EXPECT_FALSE(klass == nullptr);
1296 EXPECT_TRUE(klass->IsErroneous());
1297 EXPECT_TRUE(klass->GetIfTable() != nullptr);
1298 }
1299
TEST_F(ClassLinkerTest,FinalizableBit)1300 TEST_F(ClassLinkerTest, FinalizableBit) {
1301 ScopedObjectAccess soa(Thread::Current());
1302 mirror::Class* c;
1303
1304 // Object has a finalize method, but we know it's empty.
1305 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1306 EXPECT_FALSE(c->IsFinalizable());
1307
1308 // Enum has a finalize method to prevent its subclasses from implementing one.
1309 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Enum;");
1310 EXPECT_FALSE(c->IsFinalizable());
1311
1312 // RoundingMode is an enum.
1313 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/math/RoundingMode;");
1314 EXPECT_FALSE(c->IsFinalizable());
1315
1316 // RandomAccessFile extends Object and overrides finalize.
1317 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/RandomAccessFile;");
1318 EXPECT_TRUE(c->IsFinalizable());
1319
1320 // FileInputStream is finalizable and extends InputStream which isn't.
1321 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/InputStream;");
1322 EXPECT_FALSE(c->IsFinalizable());
1323 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/FileInputStream;");
1324 EXPECT_TRUE(c->IsFinalizable());
1325
1326 // ScheduledThreadPoolExecutor doesn't have a finalize method but
1327 // extends ThreadPoolExecutor which does.
1328 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ThreadPoolExecutor;");
1329 EXPECT_TRUE(c->IsFinalizable());
1330 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ScheduledThreadPoolExecutor;");
1331 EXPECT_TRUE(c->IsFinalizable());
1332 }
1333
TEST_F(ClassLinkerTest,ClassRootDescriptors)1334 TEST_F(ClassLinkerTest, ClassRootDescriptors) {
1335 ScopedObjectAccess soa(Thread::Current());
1336 std::string temp;
1337 for (int i = 0; i < ClassLinker::kClassRootsMax; i++) {
1338 mirror::Class* klass = class_linker_->GetClassRoot(ClassLinker::ClassRoot(i));
1339 EXPECT_GT(strlen(klass->GetDescriptor(&temp)), 0U);
1340 EXPECT_STREQ(klass->GetDescriptor(&temp),
1341 class_linker_->GetClassRootDescriptor(ClassLinker::ClassRoot(i))) << " i = " << i;
1342 }
1343 }
1344
TEST_F(ClassLinkerTest,ValidatePredefinedClassSizes)1345 TEST_F(ClassLinkerTest, ValidatePredefinedClassSizes) {
1346 ScopedObjectAccess soa(Thread::Current());
1347 ScopedNullHandle<mirror::ClassLoader> class_loader;
1348 mirror::Class* c;
1349
1350 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Class;", class_loader);
1351 ASSERT_TRUE(c != nullptr);
1352 EXPECT_EQ(c->GetClassSize(), mirror::Class::ClassClassSize(kRuntimePointerSize));
1353
1354 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Object;", class_loader);
1355 ASSERT_TRUE(c != nullptr);
1356 EXPECT_EQ(c->GetClassSize(), mirror::Object::ClassSize(kRuntimePointerSize));
1357
1358 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/String;", class_loader);
1359 ASSERT_TRUE(c != nullptr);
1360 EXPECT_EQ(c->GetClassSize(), mirror::String::ClassSize(kRuntimePointerSize));
1361
1362 c = class_linker_->FindClass(soa.Self(), "Ljava/lang/DexCache;", class_loader);
1363 ASSERT_TRUE(c != nullptr);
1364 EXPECT_EQ(c->GetClassSize(), mirror::DexCache::ClassSize(kRuntimePointerSize));
1365 }
1366
CheckMethod(ArtMethod * method,bool verified)1367 static void CheckMethod(ArtMethod* method, bool verified)
1368 REQUIRES_SHARED(Locks::mutator_lock_) {
1369 if (!method->IsNative() && !method->IsAbstract()) {
1370 EXPECT_EQ((method->GetAccessFlags() & kAccSkipAccessChecks) != 0U, verified)
1371 << method->PrettyMethod(true);
1372 }
1373 }
1374
CheckVerificationAttempted(mirror::Class * c,bool preverified)1375 static void CheckVerificationAttempted(mirror::Class* c, bool preverified)
1376 REQUIRES_SHARED(Locks::mutator_lock_) {
1377 EXPECT_EQ((c->GetAccessFlags() & kAccVerificationAttempted) != 0U, preverified)
1378 << "Class " << mirror::Class::PrettyClass(c) << " not as expected";
1379 for (auto& m : c->GetMethods(kRuntimePointerSize)) {
1380 CheckMethod(&m, preverified);
1381 }
1382 }
1383
TEST_F(ClassLinkerTest,Preverified_InitializedBoot)1384 TEST_F(ClassLinkerTest, Preverified_InitializedBoot) {
1385 ScopedObjectAccess soa(Thread::Current());
1386
1387 mirror::Class* JavaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1388 ASSERT_TRUE(JavaLangObject != nullptr);
1389 EXPECT_TRUE(JavaLangObject->IsInitialized()) << "Not testing already initialized class from the "
1390 "core";
1391 CheckVerificationAttempted(JavaLangObject, true);
1392 }
1393
TEST_F(ClassLinkerTest,Preverified_UninitializedBoot)1394 TEST_F(ClassLinkerTest, Preverified_UninitializedBoot) {
1395 ScopedObjectAccess soa(Thread::Current());
1396
1397 StackHandleScope<1> hs(soa.Self());
1398
1399 Handle<mirror::Class> security_manager(hs.NewHandle(class_linker_->FindSystemClass(
1400 soa.Self(), "Ljava/lang/SecurityManager;")));
1401 EXPECT_FALSE(security_manager->IsInitialized()) << "Not testing uninitialized class from the "
1402 "core";
1403
1404 CheckVerificationAttempted(security_manager.Get(), false);
1405
1406 class_linker_->EnsureInitialized(soa.Self(), security_manager, true, true);
1407 CheckVerificationAttempted(security_manager.Get(), true);
1408 }
1409
TEST_F(ClassLinkerTest,Preverified_App)1410 TEST_F(ClassLinkerTest, Preverified_App) {
1411 ScopedObjectAccess soa(Thread::Current());
1412
1413 StackHandleScope<2> hs(soa.Self());
1414 Handle<mirror::ClassLoader> class_loader(
1415 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1416 Handle<mirror::Class> statics(
1417 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
1418
1419 CheckVerificationAttempted(statics.Get(), false);
1420
1421 class_linker_->EnsureInitialized(soa.Self(), statics, true, true);
1422 CheckVerificationAttempted(statics.Get(), true);
1423 }
1424
TEST_F(ClassLinkerTest,IsBootStrapClassLoaded)1425 TEST_F(ClassLinkerTest, IsBootStrapClassLoaded) {
1426 ScopedObjectAccess soa(Thread::Current());
1427
1428 StackHandleScope<3> hs(soa.Self());
1429 Handle<mirror::ClassLoader> class_loader(
1430 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("Statics"))));
1431
1432 // java.lang.Object is a bootstrap class.
1433 Handle<mirror::Class> jlo_class(
1434 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;")));
1435 ASSERT_TRUE(jlo_class != nullptr);
1436 EXPECT_TRUE(jlo_class.Get()->IsBootStrapClassLoaded());
1437
1438 // Statics is not a bootstrap class.
1439 Handle<mirror::Class> statics(
1440 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
1441 ASSERT_TRUE(statics != nullptr);
1442 EXPECT_FALSE(statics.Get()->IsBootStrapClassLoaded());
1443 }
1444
1445 // Regression test for b/26799552.
TEST_F(ClassLinkerTest,RegisterDexFileName)1446 TEST_F(ClassLinkerTest, RegisterDexFileName) {
1447 ScopedObjectAccess soa(Thread::Current());
1448 StackHandleScope<2> hs(soa.Self());
1449 ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
1450 MutableHandle<mirror::DexCache> dex_cache(hs.NewHandle<mirror::DexCache>(nullptr));
1451 {
1452 ReaderMutexLock mu(soa.Self(), *Locks::dex_lock_);
1453 for (const ClassLinker::DexCacheData& data : class_linker->GetDexCachesData()) {
1454 dex_cache.Assign(soa.Self()->DecodeJObject(data.weak_root)->AsDexCache());
1455 if (dex_cache != nullptr) {
1456 break;
1457 }
1458 }
1459 ASSERT_TRUE(dex_cache != nullptr);
1460 }
1461 // Make a copy of the dex cache and change the name.
1462 dex_cache.Assign(dex_cache->Clone(soa.Self())->AsDexCache());
1463 const uint16_t data[] = { 0x20AC, 0x20A1 };
1464 Handle<mirror::String> location(hs.NewHandle(mirror::String::AllocFromUtf16(soa.Self(),
1465 arraysize(data),
1466 data)));
1467 dex_cache->SetLocation(location.Get());
1468 const DexFile* old_dex_file = dex_cache->GetDexFile();
1469
1470 std::unique_ptr<DexFile> dex_file(new DexFile(old_dex_file->Begin(),
1471 old_dex_file->Size(),
1472 location->ToModifiedUtf8(),
1473 0u,
1474 nullptr));
1475 {
1476 WriterMutexLock mu(soa.Self(), *Locks::dex_lock_);
1477 // Check that inserting with a UTF16 name works.
1478 class_linker->RegisterDexFileLocked(*dex_file, dex_cache.Get(), /* class_loader */ nullptr);
1479 }
1480 }
1481
TEST_F(ClassLinkerMethodHandlesTest,TestResolveMethodTypes)1482 TEST_F(ClassLinkerMethodHandlesTest, TestResolveMethodTypes) {
1483 ScopedObjectAccess soa(Thread::Current());
1484
1485 StackHandleScope<7> hs(soa.Self());
1486
1487 Handle<mirror::ClassLoader> class_loader(
1488 hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MethodTypes"))));
1489 Handle<mirror::Class> method_types(
1490 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LMethodTypes;", class_loader)));
1491 class_linker_->EnsureInitialized(soa.Self(), method_types, true, true);
1492
1493 ArtMethod* method1 = method_types->FindClassMethod(
1494 "method1",
1495 "(Ljava/lang/String;)Ljava/lang/String;",
1496 kRuntimePointerSize);
1497 ASSERT_TRUE(method1 != nullptr);
1498 ASSERT_FALSE(method1->IsDirect());
1499
1500 const DexFile& dex_file = *(method1->GetDexFile());
1501 Handle<mirror::DexCache> dex_cache = hs.NewHandle(
1502 class_linker_->FindDexCache(Thread::Current(), dex_file));
1503
1504 const DexFile::MethodId& method1_id = dex_file.GetMethodId(method1->GetDexMethodIndex());
1505
1506 // This is the MethodType corresponding to the prototype of
1507 // String MethodTypes# method1(String).
1508 // Its RType = Ljava/lang/String;
1509 // Its PTypes = { Ljava/lang/String; }
1510 Handle<mirror::MethodType> method1_type = hs.NewHandle(
1511 class_linker_->ResolveMethodType(dex_file, method1_id.proto_idx_, dex_cache, class_loader));
1512
1513 // Assert that the method type was resolved successfully.
1514 ASSERT_TRUE(method1_type != nullptr);
1515
1516 // Assert that the return type and the method arguments are as we expect.
1517 Handle<mirror::Class> string_class(
1518 hs.NewHandle(class_linker_->FindClass(soa.Self(), "Ljava/lang/String;", class_loader)));
1519 ASSERT_EQ(string_class.Get(), method1_type->GetRType());
1520 ASSERT_EQ(string_class.Get(), method1_type->GetPTypes()->Get(0));
1521
1522 // Resolve the method type again and assert that we get back the same value.
1523 Handle<mirror::MethodType> method1_type2 = hs.NewHandle(
1524 class_linker_->ResolveMethodType(dex_file, method1_id.proto_idx_, dex_cache, class_loader));
1525 ASSERT_EQ(method1_type.Get(), method1_type2.Get());
1526
1527 // Resolve the MethodType associated with a different method signature
1528 // and assert it's different.
1529 ArtMethod* method2 = method_types->FindClassMethod(
1530 "method2",
1531 "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
1532 kRuntimePointerSize);
1533 ASSERT_TRUE(method2 != nullptr);
1534 ASSERT_FALSE(method2->IsDirect());
1535 const DexFile::MethodId& method2_id = dex_file.GetMethodId(method2->GetDexMethodIndex());
1536 Handle<mirror::MethodType> method2_type = hs.NewHandle(
1537 class_linker_->ResolveMethodType(dex_file, method2_id.proto_idx_, dex_cache, class_loader));
1538
1539 ASSERT_TRUE(method1_type.Get() != method2_type.Get());
1540 }
1541
1542 // Verify that ClassLinker's CreateWellknownClassLoader works as expected
1543 // by creating a chain of class loaders with various dex files.
TEST_F(ClassLinkerTest,CreateWellKnownClassLoader)1544 TEST_F(ClassLinkerTest, CreateWellKnownClassLoader) {
1545 // LoadDexIn*ClassLoader methods already assert that the parent loader is the expected one.
1546 // No need to check again.
1547 jobject class_loader_a = LoadDexInPathClassLoader("MyClass", nullptr);
1548 jobject class_loader_b = LoadDexInDelegateLastClassLoader("Nested", class_loader_a);
1549 jobject class_loader_c = LoadDexInPathClassLoader("MultiDex", class_loader_b);
1550 LoadDexInDelegateLastClassLoader("Interfaces", class_loader_c);
1551 }
1552
1553 class ClassLinkerClassLoaderTest : public ClassLinkerTest {
1554 protected:
1555 // Verifies that the class identified by the given descriptor is loaded with
1556 // the expected_class_loader_obj when search from class_loader_to_search_obj.
1557 // 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)1558 void VerifyClassResolution(const std::string& descriptor,
1559 jobject class_loader_to_search_obj,
1560 jobject expected_class_loader_obj,
1561 bool should_find = true) {
1562 Thread* self = Thread::Current();
1563 ScopedObjectAccess soa(self);
1564 StackHandleScope<3> hs(self);
1565 Handle<mirror::ClassLoader> class_loader_to_search(
1566 hs.NewHandle(soa.Decode<mirror::ClassLoader>(class_loader_to_search_obj)));
1567
1568 Handle<mirror::Class> klass = hs.NewHandle(
1569 class_linker_->FindClass(soa.Self(), descriptor.c_str(), class_loader_to_search));
1570
1571 if (!should_find) {
1572 if (self->IsExceptionPending()) {
1573 self->ClearException();
1574 }
1575 ASSERT_TRUE(klass == nullptr);
1576 } else if (expected_class_loader_obj == nullptr) {
1577 ASSERT_TRUE(ClassLinker::IsBootClassLoader(soa, klass->GetClassLoader()));
1578 } else {
1579 ASSERT_TRUE(klass != nullptr) << descriptor;
1580 Handle<mirror::ClassLoader> expected_class_loader(
1581 hs.NewHandle(soa.Decode<mirror::ClassLoader>(expected_class_loader_obj)));
1582 ASSERT_EQ(klass->GetClassLoader(), expected_class_loader.Get());
1583 }
1584 }
1585 };
1586
TEST_F(ClassLinkerClassLoaderTest,CreatePathClassLoader)1587 TEST_F(ClassLinkerClassLoaderTest, CreatePathClassLoader) {
1588 jobject class_loader_a = LoadDexInPathClassLoader("ForClassLoaderA", nullptr);
1589 VerifyClassResolution("LDefinedInA;", class_loader_a, class_loader_a);
1590 VerifyClassResolution("Ljava/lang/String;", class_loader_a, nullptr);
1591 VerifyClassResolution("LDefinedInB;", class_loader_a, nullptr, /*should_find*/ false);
1592 }
1593
TEST_F(ClassLinkerClassLoaderTest,CreateDelegateLastClassLoader)1594 TEST_F(ClassLinkerClassLoaderTest, CreateDelegateLastClassLoader) {
1595 jobject class_loader_a = LoadDexInDelegateLastClassLoader("ForClassLoaderA", nullptr);
1596 VerifyClassResolution("LDefinedInA;", class_loader_a, class_loader_a);
1597 VerifyClassResolution("Ljava/lang/String;", class_loader_a, nullptr);
1598 VerifyClassResolution("LDefinedInB;", class_loader_a, nullptr, /*should_find*/ false);
1599 }
1600
TEST_F(ClassLinkerClassLoaderTest,CreateClassLoaderChain)1601 TEST_F(ClassLinkerClassLoaderTest, CreateClassLoaderChain) {
1602 // The chain is
1603 // ClassLoaderA (PathClassLoader, defines: A, AB, AC, AD)
1604 // ^
1605 // |
1606 // ClassLoaderB (DelegateLastClassLoader, defines: B, AB, BC, BD)
1607 // ^
1608 // |
1609 // ClassLoaderC (PathClassLoader, defines: C, AC, BC, CD)
1610 // ^
1611 // |
1612 // ClassLoaderD (DelegateLastClassLoader, defines: D, AD, BD, CD)
1613
1614 jobject class_loader_a = LoadDexInPathClassLoader("ForClassLoaderA", nullptr);
1615 jobject class_loader_b = LoadDexInDelegateLastClassLoader("ForClassLoaderB", class_loader_a);
1616 jobject class_loader_c = LoadDexInPathClassLoader("ForClassLoaderC", class_loader_b);
1617 jobject class_loader_d = LoadDexInDelegateLastClassLoader("ForClassLoaderD", class_loader_c);
1618
1619 // Verify exclusive classes (present in only one class loader).
1620 VerifyClassResolution("LDefinedInD;", class_loader_d, class_loader_d);
1621 VerifyClassResolution("LDefinedInC;", class_loader_d, class_loader_c);
1622 VerifyClassResolution("LDefinedInB;", class_loader_d, class_loader_b);
1623 VerifyClassResolution("LDefinedInA;", class_loader_d, class_loader_a);
1624
1625 // Verify classes that are defined in multiple classloader.
1626
1627 // Classes defined in B should be found in B even if they are defined in A or C because
1628 // B is a DelegateLastClassLoader.
1629 VerifyClassResolution("LDefinedInAB;", class_loader_d, class_loader_b);
1630 VerifyClassResolution("LDefinedInABC;", class_loader_d, class_loader_b);
1631 VerifyClassResolution("LDefinedInBC;", class_loader_d, class_loader_b);
1632
1633 // Classes defined in D should be found in D even if they are defined in parent class loaders
1634 // as well because D is a DelegateLastClassLoader.
1635 VerifyClassResolution("LDefinedInAD;", class_loader_d, class_loader_d);
1636 VerifyClassResolution("LDefinedInBD;", class_loader_d, class_loader_d);
1637 VerifyClassResolution("LDefinedInCD;", class_loader_d, class_loader_d);
1638
1639
1640 // Classes not defined in the DelegateLastClassLoaders (i.e. D or B) should be found
1641 // in the top parent.
1642 VerifyClassResolution("LDefinedInAC;", class_loader_d, class_loader_a);
1643
1644 // Sanity check that we don't find an undefined class.
1645 VerifyClassResolution("LNotDefined;", class_loader_d, nullptr, /*should_find*/ false);
1646 }
1647
1648 } // namespace art
1649