class_linker_test.cc revision 0e7f37de5bcebb413712eddd1831f30bd0818664 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "class_linker.h"
18
19#include <memory>
20#include <string>
21
22#include "class_linker-inl.h"
23#include "common_runtime_test.h"
24#include "dex_file.h"
25#include "entrypoints/entrypoint_utils-inl.h"
26#include "gc/heap.h"
27#include "mirror/art_field-inl.h"
28#include "mirror/art_method.h"
29#include "mirror/art_method-inl.h"
30#include "mirror/class-inl.h"
31#include "mirror/dex_cache.h"
32#include "mirror/object-inl.h"
33#include "mirror/object_array-inl.h"
34#include "mirror/proxy.h"
35#include "mirror/reference.h"
36#include "mirror/stack_trace_element.h"
37#include "mirror/string-inl.h"
38#include "handle_scope-inl.h"
39
40namespace art {
41
42class ClassLinkerTest : public CommonRuntimeTest {
43 protected:
44  void AssertNonExistentClass(const std::string& descriptor)
45      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
46    Thread* self = Thread::Current();
47    EXPECT_TRUE(class_linker_->FindSystemClass(self, descriptor.c_str()) == NULL);
48    EXPECT_TRUE(self->IsExceptionPending());
49    mirror::Object* exception = self->GetException(NULL);
50    self->ClearException();
51    mirror::Class* exception_class =
52        class_linker_->FindSystemClass(self, "Ljava/lang/NoClassDefFoundError;");
53    EXPECT_TRUE(exception->InstanceOf(exception_class));
54  }
55
56  void AssertPrimitiveClass(const std::string& descriptor)
57      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
58    Thread* self = Thread::Current();
59    AssertPrimitiveClass(descriptor, class_linker_->FindSystemClass(self, descriptor.c_str()));
60  }
61
62  void AssertPrimitiveClass(const std::string& descriptor, mirror::Class* primitive)
63      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
64    ASSERT_TRUE(primitive != NULL);
65    ASSERT_TRUE(primitive->GetClass() != NULL);
66    ASSERT_EQ(primitive->GetClass(), primitive->GetClass()->GetClass());
67    EXPECT_TRUE(primitive->GetClass()->GetSuperClass() != NULL);
68    ASSERT_STREQ(descriptor.c_str(), primitive->GetDescriptor().c_str());
69    EXPECT_TRUE(primitive->GetSuperClass() == NULL);
70    EXPECT_FALSE(primitive->HasSuperClass());
71    EXPECT_TRUE(primitive->GetClassLoader() == NULL);
72    EXPECT_EQ(mirror::Class::kStatusInitialized, primitive->GetStatus());
73    EXPECT_FALSE(primitive->IsErroneous());
74    EXPECT_TRUE(primitive->IsLoaded());
75    EXPECT_TRUE(primitive->IsResolved());
76    EXPECT_TRUE(primitive->IsVerified());
77    EXPECT_TRUE(primitive->IsInitialized());
78    EXPECT_FALSE(primitive->IsArrayInstance());
79    EXPECT_FALSE(primitive->IsArrayClass());
80    EXPECT_TRUE(primitive->GetComponentType() == NULL);
81    EXPECT_FALSE(primitive->IsInterface());
82    EXPECT_TRUE(primitive->IsPublic());
83    EXPECT_TRUE(primitive->IsFinal());
84    EXPECT_TRUE(primitive->IsPrimitive());
85    EXPECT_FALSE(primitive->IsSynthetic());
86    EXPECT_EQ(0U, primitive->NumDirectMethods());
87    EXPECT_EQ(0U, primitive->NumVirtualMethods());
88    EXPECT_EQ(0U, primitive->NumInstanceFields());
89    EXPECT_EQ(0U, primitive->NumStaticFields());
90    EXPECT_EQ(0U, primitive->NumDirectInterfaces());
91    EXPECT_FALSE(primitive->HasVTable());
92    EXPECT_EQ(0, primitive->GetIfTableCount());
93    EXPECT_TRUE(primitive->GetIfTable() == NULL);
94    EXPECT_EQ(kAccPublic | kAccFinal | kAccAbstract, primitive->GetAccessFlags());
95  }
96
97  void AssertArrayClass(const std::string& array_descriptor,
98                        const std::string& component_type,
99                        mirror::ClassLoader* class_loader)
100      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
101    Thread* self = Thread::Current();
102    StackHandleScope<2> hs(self);
103    Handle<mirror::ClassLoader> loader(hs.NewHandle(class_loader));
104    Handle<mirror::Class> array(
105        hs.NewHandle(class_linker_->FindClass(self, array_descriptor.c_str(), loader)));
106    EXPECT_STREQ(component_type.c_str(), array->GetComponentType()->GetDescriptor().c_str());
107    EXPECT_EQ(class_loader, array->GetClassLoader());
108    EXPECT_EQ(kAccFinal | kAccAbstract, (array->GetAccessFlags() & (kAccFinal | kAccAbstract)));
109    AssertArrayClass(array_descriptor, array);
110  }
111
112  void AssertArrayClass(const std::string& array_descriptor, Handle<mirror::Class> array)
113      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
114    ASSERT_TRUE(array.Get() != NULL);
115    ASSERT_TRUE(array->GetClass() != NULL);
116    ASSERT_EQ(array->GetClass(), array->GetClass()->GetClass());
117    EXPECT_TRUE(array->GetClass()->GetSuperClass() != NULL);
118    ASSERT_STREQ(array_descriptor.c_str(), array->GetDescriptor().c_str());
119    EXPECT_TRUE(array->GetSuperClass() != NULL);
120    Thread* self = Thread::Current();
121    EXPECT_EQ(class_linker_->FindSystemClass(self, "Ljava/lang/Object;"), array->GetSuperClass());
122    EXPECT_TRUE(array->HasSuperClass());
123    ASSERT_TRUE(array->GetComponentType() != NULL);
124    ASSERT_TRUE(!array->GetComponentType()->GetDescriptor().empty());
125    EXPECT_EQ(mirror::Class::kStatusInitialized, array->GetStatus());
126    EXPECT_FALSE(array->IsErroneous());
127    EXPECT_TRUE(array->IsLoaded());
128    EXPECT_TRUE(array->IsResolved());
129    EXPECT_TRUE(array->IsVerified());
130    EXPECT_TRUE(array->IsInitialized());
131    EXPECT_FALSE(array->IsArrayInstance());
132    EXPECT_TRUE(array->IsArrayClass());
133    EXPECT_FALSE(array->IsInterface());
134    EXPECT_EQ(array->GetComponentType()->IsPublic(), array->IsPublic());
135    EXPECT_TRUE(array->IsFinal());
136    EXPECT_FALSE(array->IsPrimitive());
137    EXPECT_FALSE(array->IsSynthetic());
138    EXPECT_EQ(0U, array->NumDirectMethods());
139    EXPECT_EQ(0U, array->NumVirtualMethods());
140    EXPECT_EQ(0U, array->NumInstanceFields());
141    EXPECT_EQ(0U, array->NumStaticFields());
142    EXPECT_EQ(2U, array->NumDirectInterfaces());
143    EXPECT_TRUE(array->ShouldHaveEmbeddedImtAndVTable());
144    EXPECT_EQ(2, array->GetIfTableCount());
145    ASSERT_TRUE(array->GetIfTable() != NULL);
146    mirror::Class* direct_interface0 = mirror::Class::GetDirectInterface(self, array, 0);
147    EXPECT_TRUE(direct_interface0 != nullptr);
148    EXPECT_STREQ(direct_interface0->GetDescriptor().c_str(), "Ljava/lang/Cloneable;");
149    mirror::Class* direct_interface1 = mirror::Class::GetDirectInterface(self, array, 1);
150    EXPECT_STREQ(direct_interface1->GetDescriptor().c_str(), "Ljava/io/Serializable;");
151    mirror::Class* array_ptr = array->GetComponentType();
152    EXPECT_EQ(class_linker_->FindArrayClass(self, &array_ptr), array.Get());
153  }
154
155  void AssertMethod(mirror::ArtMethod* method) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
156    EXPECT_TRUE(method != NULL);
157    EXPECT_TRUE(method->GetClass() != NULL);
158    EXPECT_TRUE(method->GetName() != NULL);
159    EXPECT_TRUE(method->GetSignature() != Signature::NoSignature());
160
161    EXPECT_TRUE(method->GetDexCacheStrings() != NULL);
162    EXPECT_TRUE(method->GetDexCacheResolvedMethods() != NULL);
163    EXPECT_TRUE(method->GetDexCacheResolvedTypes() != NULL);
164    EXPECT_EQ(method->GetDeclaringClass()->GetDexCache()->GetStrings(),
165              method->GetDexCacheStrings());
166    EXPECT_EQ(method->GetDeclaringClass()->GetDexCache()->GetResolvedMethods(),
167              method->GetDexCacheResolvedMethods());
168    EXPECT_EQ(method->GetDeclaringClass()->GetDexCache()->GetResolvedTypes(),
169              method->GetDexCacheResolvedTypes());
170  }
171
172  void AssertField(mirror::Class* klass, mirror::ArtField* field)
173      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
174    EXPECT_TRUE(field != NULL);
175    EXPECT_TRUE(field->GetClass() != NULL);
176    EXPECT_EQ(klass, field->GetDeclaringClass());
177    EXPECT_TRUE(field->GetName() != NULL);
178    StackHandleScope<1> hs(Thread::Current());
179    FieldHelper fh(hs.NewHandle(field));
180    EXPECT_TRUE(fh.GetType() != NULL);
181  }
182
183  void AssertClass(const std::string& descriptor, Handle<mirror::Class> klass)
184      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
185    EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor().c_str());
186    if (descriptor == "Ljava/lang/Object;") {
187      EXPECT_FALSE(klass->HasSuperClass());
188    } else {
189      EXPECT_TRUE(klass->HasSuperClass());
190      EXPECT_TRUE(klass->GetSuperClass() != NULL);
191    }
192    EXPECT_TRUE(klass->GetClass() != NULL);
193    EXPECT_EQ(klass->GetClass(), klass->GetClass()->GetClass());
194    EXPECT_TRUE(klass->GetDexCache() != NULL);
195    EXPECT_TRUE(klass->IsLoaded());
196    EXPECT_TRUE(klass->IsResolved());
197    EXPECT_FALSE(klass->IsErroneous());
198    EXPECT_FALSE(klass->IsArrayClass());
199    EXPECT_TRUE(klass->GetComponentType() == NULL);
200    EXPECT_TRUE(klass->IsInSamePackage(klass.Get()));
201    EXPECT_TRUE(mirror::Class::IsInSamePackage(klass->GetDescriptor().c_str(),
202                                               klass->GetDescriptor().c_str()));
203    if (klass->IsInterface()) {
204      EXPECT_TRUE(klass->IsAbstract());
205      if (klass->NumDirectMethods() == 1) {
206        EXPECT_TRUE(klass->GetDirectMethod(0)->IsClassInitializer());
207        EXPECT_TRUE(klass->GetDirectMethod(0)->IsDirect());
208      } else {
209        EXPECT_EQ(0U, klass->NumDirectMethods());
210      }
211    } else {
212      if (!klass->IsSynthetic()) {
213        EXPECT_NE(0U, klass->NumDirectMethods());
214      }
215    }
216    EXPECT_EQ(klass->IsInterface(), !klass->HasVTable());
217    mirror::IfTable* iftable = klass->GetIfTable();
218    for (int i = 0; i < klass->GetIfTableCount(); i++) {
219      mirror::Class* interface = iftable->GetInterface(i);
220      ASSERT_TRUE(interface != NULL);
221      if (klass->IsInterface()) {
222        EXPECT_EQ(0U, iftable->GetMethodArrayCount(i));
223      } else {
224        EXPECT_EQ(interface->NumVirtualMethods(), iftable->GetMethodArrayCount(i));
225      }
226    }
227    if (klass->IsAbstract()) {
228      EXPECT_FALSE(klass->IsFinal());
229    } else {
230      EXPECT_FALSE(klass->IsAnnotation());
231    }
232    if (klass->IsFinal()) {
233      EXPECT_FALSE(klass->IsAbstract());
234      EXPECT_FALSE(klass->IsAnnotation());
235    }
236    if (klass->IsAnnotation()) {
237      EXPECT_FALSE(klass->IsFinal());
238      EXPECT_TRUE(klass->IsAbstract());
239    }
240
241    EXPECT_FALSE(klass->IsPrimitive());
242    EXPECT_TRUE(klass->CanAccess(klass.Get()));
243
244    for (size_t i = 0; i < klass->NumDirectMethods(); i++) {
245      mirror::ArtMethod* method = klass->GetDirectMethod(i);
246      AssertMethod(method);
247      EXPECT_TRUE(method->IsDirect());
248      EXPECT_EQ(klass.Get(), method->GetDeclaringClass());
249    }
250
251    for (size_t i = 0; i < klass->NumVirtualMethods(); i++) {
252      mirror::ArtMethod* method = klass->GetVirtualMethod(i);
253      AssertMethod(method);
254      EXPECT_FALSE(method->IsDirect());
255      EXPECT_TRUE(method->GetDeclaringClass()->IsAssignableFrom(klass.Get()));
256    }
257
258    for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
259      mirror::ArtField* field = klass->GetInstanceField(i);
260      AssertField(klass.Get(), field);
261      EXPECT_FALSE(field->IsStatic());
262    }
263
264    for (size_t i = 0; i < klass->NumStaticFields(); i++) {
265      mirror::ArtField* field = klass->GetStaticField(i);
266      AssertField(klass.Get(), field);
267      EXPECT_TRUE(field->IsStatic());
268    }
269
270    // Confirm that all instances fields are packed together at the start
271    EXPECT_GE(klass->NumInstanceFields(), klass->NumReferenceInstanceFields());
272    StackHandleScope<1> hs(Thread::Current());
273    FieldHelper fh(hs.NewHandle<mirror::ArtField>(nullptr));
274    for (size_t i = 0; i < klass->NumReferenceInstanceFields(); i++) {
275      mirror::ArtField* field = klass->GetInstanceField(i);
276      fh.ChangeField(field);
277      ASSERT_TRUE(!field->IsPrimitiveType());
278      mirror::Class* field_type = fh.GetType();
279      ASSERT_TRUE(field_type != NULL);
280      ASSERT_TRUE(!field_type->IsPrimitive());
281    }
282    for (size_t i = klass->NumReferenceInstanceFields(); i < klass->NumInstanceFields(); i++) {
283      mirror::ArtField* field = klass->GetInstanceField(i);
284      fh.ChangeField(field);
285      mirror::Class* field_type = fh.GetType();
286      ASSERT_TRUE(field_type != NULL);
287      if (!fh.GetField()->IsPrimitiveType() || !field_type->IsPrimitive()) {
288        // While Reference.referent is not primitive, the ClassLinker
289        // treats it as such so that the garbage collector won't scan it.
290        EXPECT_EQ(PrettyField(fh.GetField()), "java.lang.Object java.lang.ref.Reference.referent");
291      }
292    }
293
294    size_t total_num_reference_instance_fields = 0;
295    mirror::Class* k = klass.Get();
296    while (k != NULL) {
297      total_num_reference_instance_fields += k->NumReferenceInstanceFields();
298      k = k->GetSuperClass();
299    }
300    EXPECT_EQ(klass->GetReferenceInstanceOffsets() == 0, total_num_reference_instance_fields == 0);
301  }
302
303  void AssertDexFileClass(mirror::ClassLoader* class_loader, const std::string& descriptor)
304      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
305    ASSERT_TRUE(descriptor != NULL);
306    Thread* self = Thread::Current();
307    StackHandleScope<1> hs(self);
308    Handle<mirror::Class> klass(
309        hs.NewHandle(class_linker_->FindSystemClass(self, descriptor.c_str())));
310    ASSERT_TRUE(klass.Get() != nullptr);
311    EXPECT_STREQ(descriptor.c_str(), klass.Get()->GetDescriptor().c_str());
312    EXPECT_EQ(class_loader, klass->GetClassLoader());
313    if (klass->IsPrimitive()) {
314      AssertPrimitiveClass(descriptor, klass.Get());
315    } else if (klass->IsArrayClass()) {
316      AssertArrayClass(descriptor, klass);
317    } else {
318      AssertClass(descriptor, klass);
319    }
320  }
321
322  void AssertDexFile(const DexFile* dex, mirror::ClassLoader* class_loader)
323      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
324    ASSERT_TRUE(dex != NULL);
325
326    // Verify all the classes defined in this file
327    for (size_t i = 0; i < dex->NumClassDefs(); i++) {
328      const DexFile::ClassDef& class_def = dex->GetClassDef(i);
329      const char* descriptor = dex->GetClassDescriptor(class_def);
330      AssertDexFileClass(class_loader, descriptor);
331    }
332    // Verify all the types referenced by this file
333    for (size_t i = 0; i < dex->NumTypeIds(); i++) {
334      const DexFile::TypeId& type_id = dex->GetTypeId(i);
335      const char* descriptor = dex->GetTypeDescriptor(type_id);
336      AssertDexFileClass(class_loader, descriptor);
337    }
338    class_linker_->VisitRoots(TestRootVisitor, NULL, kVisitRootFlagAllRoots);
339    // Verify the dex cache has resolution methods in all resolved method slots
340    mirror::DexCache* dex_cache = class_linker_->FindDexCache(*dex);
341    mirror::ObjectArray<mirror::ArtMethod>* resolved_methods = dex_cache->GetResolvedMethods();
342    for (size_t i = 0; i < static_cast<size_t>(resolved_methods->GetLength()); i++) {
343      EXPECT_TRUE(resolved_methods->Get(i) != NULL) << dex->GetLocation() << " i=" << i;
344    }
345  }
346
347  static void TestRootVisitor(mirror::Object** root, void*, uint32_t, RootType) {
348    EXPECT_TRUE(*root != NULL);
349  }
350};
351
352struct CheckOffset {
353  size_t cpp_offset;
354  const char* java_name;
355  CheckOffset(size_t c, const char* j) : cpp_offset(c), java_name(j) {}
356};
357
358template <typename T>
359struct CheckOffsets {
360  CheckOffsets(bool is_static, const char* class_descriptor)
361      : is_static(is_static), class_descriptor(class_descriptor) {}
362  bool is_static;
363  std::string class_descriptor;
364  std::vector<CheckOffset> offsets;
365
366  bool Check() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
367    Thread* self = Thread::Current();
368    mirror::Class* klass =
369        Runtime::Current()->GetClassLinker()->FindSystemClass(self, class_descriptor.c_str());
370    CHECK(klass != NULL) << class_descriptor;
371
372    bool error = false;
373
374    if (!klass->IsClassClass() && !is_static) {
375      size_t expected_size = is_static ? klass->GetClassSize(): klass->GetObjectSize();
376      if (sizeof(T) != expected_size) {
377        LOG(ERROR) << "Class size mismatch:"
378           << " class=" << class_descriptor
379           << " Java=" << expected_size
380           << " C++=" << sizeof(T);
381        error = true;
382      }
383    }
384
385    size_t num_fields = is_static ? klass->NumStaticFields() : klass->NumInstanceFields();
386    if (offsets.size() != num_fields) {
387      LOG(ERROR) << "Field count mismatch:"
388         << " class=" << class_descriptor
389         << " Java=" << num_fields
390         << " C++=" << offsets.size();
391      error = true;
392    }
393
394    for (size_t i = 0; i < offsets.size(); i++) {
395      mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
396      StringPiece field_name(field->GetName());
397      if (field_name != offsets[i].java_name) {
398        error = true;
399      }
400    }
401    if (error) {
402      for (size_t i = 0; i < offsets.size(); i++) {
403        CheckOffset& offset = offsets[i];
404        mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
405        StringPiece field_name(field->GetName());
406        if (field_name != offsets[i].java_name) {
407          LOG(ERROR) << "JAVA FIELD ORDER MISMATCH NEXT LINE:";
408        }
409        LOG(ERROR) << "Java field order:"
410           << " i=" << i << " class=" << class_descriptor
411           << " Java=" << field_name
412           << " CheckOffsets=" << offset.java_name;
413      }
414    }
415
416    for (size_t i = 0; i < offsets.size(); i++) {
417      CheckOffset& offset = offsets[i];
418      mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
419      if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
420        error = true;
421      }
422    }
423    if (error) {
424      for (size_t i = 0; i < offsets.size(); i++) {
425        CheckOffset& offset = offsets[i];
426        mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
427        if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
428          LOG(ERROR) << "OFFSET MISMATCH NEXT LINE:";
429        }
430        LOG(ERROR) << "Offset: class=" << class_descriptor << " field=" << offset.java_name
431           << " Java=" << field->GetOffset().Uint32Value() << " C++=" << offset.cpp_offset;
432      }
433    }
434
435    return !error;
436  };
437
438 private:
439  DISALLOW_IMPLICIT_CONSTRUCTORS(CheckOffsets);
440};
441
442// Note that ClassLinkerTest.ValidateFieldOrderOfJavaCppUnionClasses
443// is first since if it is failing, others are unlikely to succeed.
444
445struct ObjectOffsets : public CheckOffsets<mirror::Object> {
446  ObjectOffsets() : CheckOffsets<mirror::Object>(false, "Ljava/lang/Object;") {
447    // alphabetical references
448    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, klass_),   "shadow$_klass_"));
449
450    // alphabetical 32-bit
451    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, monitor_), "shadow$_monitor_"));
452#ifdef USE_BAKER_OR_BROOKS_READ_BARRIER
453    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, x_rb_ptr_), "shadow$_x_rb_ptr_"));
454    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, x_xpadding_), "shadow$_x_xpadding_"));
455#endif
456  };
457};
458
459struct ArtFieldOffsets : public CheckOffsets<mirror::ArtField> {
460  ArtFieldOffsets() : CheckOffsets<mirror::ArtField>(false, "Ljava/lang/reflect/ArtField;") {
461    // alphabetical references
462    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, declaring_class_), "declaringClass"));
463
464    // alphabetical 32-bit
465    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, access_flags_),    "accessFlags"));
466    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, field_dex_idx_),   "fieldDexIndex"));
467    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, offset_),          "offset"));
468  };
469};
470
471struct ArtMethodOffsets : public CheckOffsets<mirror::ArtMethod> {
472  ArtMethodOffsets() : CheckOffsets<mirror::ArtMethod>(false, "Ljava/lang/reflect/ArtMethod;") {
473    // alphabetical references
474    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, declaring_class_),                      "declaringClass"));
475    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_resolved_methods_),           "dexCacheResolvedMethods"));
476    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_resolved_types_),             "dexCacheResolvedTypes"));
477    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_strings_),                    "dexCacheStrings"));
478
479    // alphabetical 64-bit
480    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_interpreter_),            "entryPointFromInterpreter"));
481    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_jni_),                    "entryPointFromJni"));
482    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_portable_compiled_code_), "entryPointFromPortableCompiledCode"));
483    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_quick_compiled_code_),    "entryPointFromQuickCompiledCode"));
484    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, gc_map_),                                  "gcMap"));
485
486    // alphabetical 32-bit
487    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, access_flags_),                   "accessFlags"));
488    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_code_item_offset_),           "dexCodeItemOffset"));
489    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_method_index_),               "dexMethodIndex"));
490    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, method_index_),                   "methodIndex"));
491  };
492};
493
494struct ClassOffsets : public CheckOffsets<mirror::Class> {
495  ClassOffsets() : CheckOffsets<mirror::Class>(false, "Ljava/lang/Class;") {
496    // alphabetical references
497    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, class_loader_),                  "classLoader"));
498    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, component_type_),                "componentType"));
499    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_cache_),                     "dexCache"));
500    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, direct_methods_),                "directMethods"));
501    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, ifields_),                       "iFields"));
502    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, iftable_),                       "ifTable"));
503    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, imtable_),                       "imTable"));
504    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, name_),                          "name"));
505    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, sfields_),                       "sFields"));
506    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, super_class_),                   "superClass"));
507    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, verify_error_class_),            "verifyErrorClass"));
508    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, virtual_methods_),               "virtualMethods"));
509    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, vtable_),                        "vtable"));
510
511    // alphabetical 32-bit
512    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, access_flags_),                  "accessFlags"));
513    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, class_size_),                    "classSize"));
514    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, clinit_thread_id_),              "clinitThreadId"));
515    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_class_def_idx_),             "dexClassDefIndex"));
516    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_type_idx_),                  "dexTypeIndex"));
517    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_instance_fields_), "numReferenceInstanceFields"));
518    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_static_fields_),   "numReferenceStaticFields"));
519    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, object_size_),                   "objectSize"));
520    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, primitive_type_),                "primitiveType"));
521    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, reference_instance_offsets_),    "referenceInstanceOffsets"));
522    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, reference_static_offsets_),      "referenceStaticOffsets"));
523    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, status_),                        "status"));
524  };
525};
526
527struct StringOffsets : public CheckOffsets<mirror::String> {
528  StringOffsets() : CheckOffsets<mirror::String>(false, "Ljava/lang/String;") {
529    // alphabetical references
530    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, array_),     "value"));
531
532    // alphabetical 32-bit
533    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, count_),     "count"));
534    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, hash_code_), "hashCode"));
535    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, offset_),    "offset"));
536  };
537};
538
539struct ThrowableOffsets : public CheckOffsets<mirror::Throwable> {
540  ThrowableOffsets() : CheckOffsets<mirror::Throwable>(false, "Ljava/lang/Throwable;") {
541    // alphabetical references
542    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, cause_),                 "cause"));
543    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, detail_message_),        "detailMessage"));
544    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_state_),           "stackState"));
545    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_trace_),           "stackTrace"));
546    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, suppressed_exceptions_), "suppressedExceptions"));
547  };
548};
549
550struct StackTraceElementOffsets : public CheckOffsets<mirror::StackTraceElement> {
551  StackTraceElementOffsets() : CheckOffsets<mirror::StackTraceElement>(false, "Ljava/lang/StackTraceElement;") {
552    // alphabetical references
553    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, declaring_class_), "declaringClass"));
554    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, file_name_),       "fileName"));
555    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, method_name_),     "methodName"));
556    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, line_number_),     "lineNumber"));
557  };
558};
559
560struct ClassLoaderOffsets : public CheckOffsets<mirror::ClassLoader> {
561  ClassLoaderOffsets() : CheckOffsets<mirror::ClassLoader>(false, "Ljava/lang/ClassLoader;") {
562    // alphabetical references
563    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, packages_),   "packages"));
564    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, parent_),     "parent"));
565    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, proxyCache_), "proxyCache"));
566  };
567};
568
569struct ProxyOffsets : public CheckOffsets<mirror::Proxy> {
570  ProxyOffsets() : CheckOffsets<mirror::Proxy>(false, "Ljava/lang/reflect/Proxy;") {
571    // alphabetical references
572    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Proxy, h_), "h"));
573  };
574};
575
576struct DexCacheOffsets : public CheckOffsets<mirror::DexCache> {
577  DexCacheOffsets() : CheckOffsets<mirror::DexCache>(false, "Ljava/lang/DexCache;") {
578    // alphabetical references
579    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_),                        "dex"));
580    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, location_),                   "location"));
581    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_),            "resolvedFields"));
582    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_),           "resolvedMethods"));
583    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_),             "resolvedTypes"));
584    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_),                    "strings"));
585    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_file_),                   "dexFile"));
586  };
587};
588
589struct ReferenceOffsets : public CheckOffsets<mirror::Reference> {
590  ReferenceOffsets() : CheckOffsets<mirror::Reference>(false, "Ljava/lang/ref/Reference;") {
591    // alphabetical references
592    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, pending_next_),  "pendingNext"));
593    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, queue_),         "queue"));
594    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, queue_next_),    "queueNext"));
595    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, referent_),      "referent"));
596  };
597};
598
599struct FinalizerReferenceOffsets : public CheckOffsets<mirror::FinalizerReference> {
600  FinalizerReferenceOffsets() : CheckOffsets<mirror::FinalizerReference>(false, "Ljava/lang/ref/FinalizerReference;") {
601    // alphabetical references
602    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, next_),   "next"));
603    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, prev_),   "prev"));
604    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, zombie_), "zombie"));
605  };
606};
607
608// C++ fields must exactly match the fields in the Java classes. If this fails,
609// reorder the fields in the C++ class. Managed class fields are ordered by
610// ClassLinker::LinkFields.
611TEST_F(ClassLinkerTest, ValidateFieldOrderOfJavaCppUnionClasses) {
612  ScopedObjectAccess soa(Thread::Current());
613  EXPECT_TRUE(ObjectOffsets().Check());
614  EXPECT_TRUE(ArtFieldOffsets().Check());
615  EXPECT_TRUE(ArtMethodOffsets().Check());
616  EXPECT_TRUE(ClassOffsets().Check());
617  EXPECT_TRUE(StringOffsets().Check());
618  EXPECT_TRUE(ThrowableOffsets().Check());
619  EXPECT_TRUE(StackTraceElementOffsets().Check());
620  EXPECT_TRUE(ClassLoaderOffsets().Check());
621  EXPECT_TRUE(ProxyOffsets().Check());
622  EXPECT_TRUE(DexCacheOffsets().Check());
623  EXPECT_TRUE(ReferenceOffsets().Check());
624  EXPECT_TRUE(FinalizerReferenceOffsets().Check());
625}
626
627TEST_F(ClassLinkerTest, FindClassNonexistent) {
628  ScopedObjectAccess soa(Thread::Current());
629  AssertNonExistentClass("NoSuchClass;");
630  AssertNonExistentClass("LNoSuchClass;");
631}
632
633TEST_F(ClassLinkerTest, FindClassNested) {
634  ScopedObjectAccess soa(Thread::Current());
635  StackHandleScope<1> hs(soa.Self());
636  Handle<mirror::ClassLoader> class_loader(
637      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Nested"))));
638
639  mirror::Class* outer = class_linker_->FindClass(soa.Self(), "LNested;", class_loader);
640  ASSERT_TRUE(outer != NULL);
641  EXPECT_EQ(0U, outer->NumVirtualMethods());
642  EXPECT_EQ(1U, outer->NumDirectMethods());
643
644  mirror::Class* inner = class_linker_->FindClass(soa.Self(), "LNested$Inner;", class_loader);
645  ASSERT_TRUE(inner != NULL);
646  EXPECT_EQ(0U, inner->NumVirtualMethods());
647  EXPECT_EQ(1U, inner->NumDirectMethods());
648}
649
650TEST_F(ClassLinkerTest, FindClass_Primitives) {
651  ScopedObjectAccess soa(Thread::Current());
652  const std::string expected("BCDFIJSZV");
653  for (int ch = 1; ch < 256; ++ch) {
654    std::string descriptor;
655    descriptor.push_back(ch);
656    if (expected.find(ch) == std::string::npos) {
657      AssertNonExistentClass(descriptor);
658    } else {
659      AssertPrimitiveClass(descriptor);
660    }
661  }
662}
663
664TEST_F(ClassLinkerTest, FindClass) {
665  ScopedObjectAccess soa(Thread::Current());
666  mirror::Class* JavaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
667  ASSERT_TRUE(JavaLangObject != NULL);
668  ASSERT_TRUE(JavaLangObject->GetClass() != NULL);
669  ASSERT_EQ(JavaLangObject->GetClass(), JavaLangObject->GetClass()->GetClass());
670  EXPECT_EQ(JavaLangObject, JavaLangObject->GetClass()->GetSuperClass());
671  ASSERT_STREQ(JavaLangObject->GetDescriptor().c_str(), "Ljava/lang/Object;");
672  EXPECT_TRUE(JavaLangObject->GetSuperClass() == NULL);
673  EXPECT_FALSE(JavaLangObject->HasSuperClass());
674  EXPECT_TRUE(JavaLangObject->GetClassLoader() == NULL);
675  EXPECT_EQ(mirror::Class::kStatusInitialized, JavaLangObject->GetStatus());
676  EXPECT_FALSE(JavaLangObject->IsErroneous());
677  EXPECT_TRUE(JavaLangObject->IsLoaded());
678  EXPECT_TRUE(JavaLangObject->IsResolved());
679  EXPECT_TRUE(JavaLangObject->IsVerified());
680  EXPECT_TRUE(JavaLangObject->IsInitialized());
681  EXPECT_FALSE(JavaLangObject->IsArrayInstance());
682  EXPECT_FALSE(JavaLangObject->IsArrayClass());
683  EXPECT_TRUE(JavaLangObject->GetComponentType() == NULL);
684  EXPECT_FALSE(JavaLangObject->IsInterface());
685  EXPECT_TRUE(JavaLangObject->IsPublic());
686  EXPECT_FALSE(JavaLangObject->IsFinal());
687  EXPECT_FALSE(JavaLangObject->IsPrimitive());
688  EXPECT_FALSE(JavaLangObject->IsSynthetic());
689  EXPECT_EQ(2U, JavaLangObject->NumDirectMethods());
690  EXPECT_EQ(11U, JavaLangObject->NumVirtualMethods());
691  if (!kUseBakerOrBrooksReadBarrier) {
692    EXPECT_EQ(2U, JavaLangObject->NumInstanceFields());
693  } else {
694    EXPECT_EQ(4U, JavaLangObject->NumInstanceFields());
695  }
696  EXPECT_STREQ(JavaLangObject->GetInstanceField(0)->GetName(), "shadow$_klass_");
697  EXPECT_STREQ(JavaLangObject->GetInstanceField(1)->GetName(), "shadow$_monitor_");
698  if (kUseBakerOrBrooksReadBarrier) {
699    EXPECT_STREQ(JavaLangObject->GetInstanceField(2)->GetName(), "shadow$_x_rb_ptr_");
700    EXPECT_STREQ(JavaLangObject->GetInstanceField(3)->GetName(), "shadow$_x_xpadding_");
701  }
702
703  EXPECT_EQ(0U, JavaLangObject->NumStaticFields());
704  EXPECT_EQ(0U, JavaLangObject->NumDirectInterfaces());
705
706  StackHandleScope<1> hs(soa.Self());
707  Handle<mirror::ClassLoader> class_loader(
708      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
709  AssertNonExistentClass("LMyClass;");
710  mirror::Class* MyClass = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader);
711  ASSERT_TRUE(MyClass != NULL);
712  ASSERT_TRUE(MyClass->GetClass() != NULL);
713  ASSERT_EQ(MyClass->GetClass(), MyClass->GetClass()->GetClass());
714  EXPECT_EQ(JavaLangObject, MyClass->GetClass()->GetSuperClass());
715  ASSERT_STREQ(MyClass->GetDescriptor().c_str(), "LMyClass;");
716  EXPECT_TRUE(MyClass->GetSuperClass() == JavaLangObject);
717  EXPECT_TRUE(MyClass->HasSuperClass());
718  EXPECT_EQ(class_loader.Get(), MyClass->GetClassLoader());
719  EXPECT_EQ(mirror::Class::kStatusResolved, MyClass->GetStatus());
720  EXPECT_FALSE(MyClass->IsErroneous());
721  EXPECT_TRUE(MyClass->IsLoaded());
722  EXPECT_TRUE(MyClass->IsResolved());
723  EXPECT_FALSE(MyClass->IsVerified());
724  EXPECT_FALSE(MyClass->IsInitialized());
725  EXPECT_FALSE(MyClass->IsArrayInstance());
726  EXPECT_FALSE(MyClass->IsArrayClass());
727  EXPECT_TRUE(MyClass->GetComponentType() == NULL);
728  EXPECT_FALSE(MyClass->IsInterface());
729  EXPECT_FALSE(MyClass->IsPublic());
730  EXPECT_FALSE(MyClass->IsFinal());
731  EXPECT_FALSE(MyClass->IsPrimitive());
732  EXPECT_FALSE(MyClass->IsSynthetic());
733  EXPECT_EQ(1U, MyClass->NumDirectMethods());
734  EXPECT_EQ(0U, MyClass->NumVirtualMethods());
735  EXPECT_EQ(0U, MyClass->NumInstanceFields());
736  EXPECT_EQ(0U, MyClass->NumStaticFields());
737  EXPECT_EQ(0U, MyClass->NumDirectInterfaces());
738
739  EXPECT_EQ(JavaLangObject->GetClass()->GetClass(), MyClass->GetClass()->GetClass());
740
741  // created by class_linker
742  AssertArrayClass("[C", "C", NULL);
743  AssertArrayClass("[Ljava/lang/Object;", "Ljava/lang/Object;", NULL);
744  // synthesized on the fly
745  AssertArrayClass("[[C", "[C", NULL);
746  AssertArrayClass("[[[LMyClass;", "[[LMyClass;", class_loader.Get());
747  // or not available at all
748  AssertNonExistentClass("[[[[LNonExistentClass;");
749}
750
751TEST_F(ClassLinkerTest, LibCore) {
752  ScopedObjectAccess soa(Thread::Current());
753  AssertDexFile(java_lang_dex_file_, NULL);
754}
755
756// The first reference array element must be a multiple of 4 bytes from the
757// start of the object
758TEST_F(ClassLinkerTest, ValidateObjectArrayElementsOffset) {
759  ScopedObjectAccess soa(Thread::Current());
760  mirror::Class* array_class = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
761  mirror::ObjectArray<mirror::String>* array =
762      mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), array_class, 0);
763  uintptr_t data_offset =
764      reinterpret_cast<uintptr_t>(array->GetRawData(sizeof(mirror::HeapReference<mirror::String>),
765                                                    0));
766  if (sizeof(mirror::HeapReference<mirror::String>) == sizeof(int32_t)) {
767    EXPECT_TRUE(IsAligned<4>(data_offset));  // Check 4 byte alignment.
768  } else {
769    EXPECT_TRUE(IsAligned<8>(data_offset));  // Check 8 byte alignment.
770  }
771}
772
773TEST_F(ClassLinkerTest, ValidatePrimitiveArrayElementsOffset) {
774  ScopedObjectAccess soa(Thread::Current());
775  StackHandleScope<5> hs(soa.Self());
776  Handle<mirror::LongArray> long_array(hs.NewHandle(mirror::LongArray::Alloc(soa.Self(), 0)));
777  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[J"), long_array->GetClass());
778  uintptr_t data_offset = reinterpret_cast<uintptr_t>(long_array->GetData());
779  EXPECT_TRUE(IsAligned<8>(data_offset));  // Longs require 8 byte alignment
780
781  Handle<mirror::DoubleArray> double_array(hs.NewHandle(mirror::DoubleArray::Alloc(soa.Self(), 0)));
782  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[D"), double_array->GetClass());
783  data_offset = reinterpret_cast<uintptr_t>(double_array->GetData());
784  EXPECT_TRUE(IsAligned<8>(data_offset));  // Doubles require 8 byte alignment
785
786  Handle<mirror::IntArray> int_array(hs.NewHandle(mirror::IntArray::Alloc(soa.Self(), 0)));
787  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[I"), int_array->GetClass());
788  data_offset = reinterpret_cast<uintptr_t>(int_array->GetData());
789  EXPECT_TRUE(IsAligned<4>(data_offset));  // Ints require 4 byte alignment
790
791  Handle<mirror::CharArray> char_array(hs.NewHandle(mirror::CharArray::Alloc(soa.Self(), 0)));
792  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[C"), char_array->GetClass());
793  data_offset = reinterpret_cast<uintptr_t>(char_array->GetData());
794  EXPECT_TRUE(IsAligned<2>(data_offset));  // Chars require 2 byte alignment
795
796  Handle<mirror::ShortArray> short_array(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 0)));
797  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[S"), short_array->GetClass());
798  data_offset = reinterpret_cast<uintptr_t>(short_array->GetData());
799  EXPECT_TRUE(IsAligned<2>(data_offset));  // Shorts require 2 byte alignment
800
801  // Take it as given that bytes and booleans have byte alignment
802}
803
804TEST_F(ClassLinkerTest, ValidateBoxedTypes) {
805  // Validate that the "value" field is always the 0th field in each of java.lang's box classes.
806  // This lets UnboxPrimitive avoid searching for the field by name at runtime.
807  ScopedObjectAccess soa(Thread::Current());
808  NullHandle<mirror::ClassLoader> class_loader;
809  mirror::Class* c;
810  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Boolean;", class_loader);
811  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
812  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Byte;", class_loader);
813  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
814  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Character;", class_loader);
815  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
816  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Double;", class_loader);
817  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
818  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Float;", class_loader);
819  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
820  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Integer;", class_loader);
821  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
822  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Long;", class_loader);
823  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
824  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Short;", class_loader);
825  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
826}
827
828TEST_F(ClassLinkerTest, TwoClassLoadersOneClass) {
829  ScopedObjectAccess soa(Thread::Current());
830  StackHandleScope<2> hs(soa.Self());
831  Handle<mirror::ClassLoader> class_loader_1(
832      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
833  Handle<mirror::ClassLoader> class_loader_2(
834      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
835  mirror::Class* MyClass_1 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_1);
836  mirror::Class* MyClass_2 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_2);
837  EXPECT_TRUE(MyClass_1 != nullptr);
838  EXPECT_TRUE(MyClass_2 != nullptr);
839  EXPECT_NE(MyClass_1, MyClass_2);
840}
841
842TEST_F(ClassLinkerTest, StaticFields) {
843  ScopedObjectAccess soa(Thread::Current());
844  StackHandleScope<2> hs(soa.Self());
845  Handle<mirror::ClassLoader> class_loader(
846      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Statics"))));
847  Handle<mirror::Class> statics(
848      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
849  class_linker_->EnsureInitialized(statics, true, true);
850
851  // Static final primitives that are initialized by a compile-time constant
852  // expression resolve to a copy of a constant value from the constant pool.
853  // So <clinit> should be null.
854  mirror::ArtMethod* clinit = statics->FindDirectMethod("<clinit>", "()V");
855  EXPECT_TRUE(clinit == NULL);
856
857  EXPECT_EQ(9U, statics->NumStaticFields());
858
859  mirror::ArtField* s0 = mirror::Class::FindStaticField(soa.Self(), statics, "s0", "Z");
860  EXPECT_STREQ(s0->GetClass()->GetDescriptor().c_str(), "Ljava/lang/reflect/ArtField;");
861  EXPECT_EQ(s0->GetTypeAsPrimitiveType(), Primitive::kPrimBoolean);
862  EXPECT_EQ(true, s0->GetBoolean(statics.Get()));
863  s0->SetBoolean<false>(statics.Get(), false);
864
865  mirror::ArtField* s1 = mirror::Class::FindStaticField(soa.Self(), statics, "s1", "B");
866  EXPECT_EQ(s1->GetTypeAsPrimitiveType(), Primitive::kPrimByte);
867  EXPECT_EQ(5, s1->GetByte(statics.Get()));
868  s1->SetByte<false>(statics.Get(), 6);
869
870  mirror::ArtField* s2 = mirror::Class::FindStaticField(soa.Self(), statics, "s2", "C");
871  EXPECT_EQ(s2->GetTypeAsPrimitiveType(), Primitive::kPrimChar);
872  EXPECT_EQ('a', s2->GetChar(statics.Get()));
873  s2->SetChar<false>(statics.Get(), 'b');
874
875  mirror::ArtField* s3 = mirror::Class::FindStaticField(soa.Self(), statics, "s3", "S");
876  EXPECT_EQ(s3->GetTypeAsPrimitiveType(), Primitive::kPrimShort);
877  EXPECT_EQ(-536, s3->GetShort(statics.Get()));
878  s3->SetShort<false>(statics.Get(), -535);
879
880  mirror::ArtField* s4 = mirror::Class::FindStaticField(soa.Self(), statics, "s4", "I");
881  EXPECT_EQ(s4->GetTypeAsPrimitiveType(), Primitive::kPrimInt);
882  EXPECT_EQ(2000000000, s4->GetInt(statics.Get()));
883  s4->SetInt<false>(statics.Get(), 2000000001);
884
885  mirror::ArtField* s5 = mirror::Class::FindStaticField(soa.Self(), statics, "s5", "J");
886  EXPECT_EQ(s5->GetTypeAsPrimitiveType(), Primitive::kPrimLong);
887  EXPECT_EQ(0x1234567890abcdefLL, s5->GetLong(statics.Get()));
888  s5->SetLong<false>(statics.Get(), INT64_C(0x34567890abcdef12));
889
890  mirror::ArtField* s6 = mirror::Class::FindStaticField(soa.Self(), statics, "s6", "F");
891  EXPECT_EQ(s6->GetTypeAsPrimitiveType(), Primitive::kPrimFloat);
892  EXPECT_EQ(0.5, s6->GetFloat(statics.Get()));
893  s6->SetFloat<false>(statics.Get(), 0.75);
894
895  mirror::ArtField* s7 = mirror::Class::FindStaticField(soa.Self(), statics, "s7", "D");
896  EXPECT_EQ(s7->GetTypeAsPrimitiveType(), Primitive::kPrimDouble);
897  EXPECT_EQ(16777217, s7->GetDouble(statics.Get()));
898  s7->SetDouble<false>(statics.Get(), 16777219);
899
900  mirror::ArtField* s8 = mirror::Class::FindStaticField(soa.Self(), statics, "s8",
901                                                        "Ljava/lang/String;");
902  EXPECT_EQ(s8->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
903  EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("android"));
904  s8->SetObject<false>(s8->GetDeclaringClass(),
905                       mirror::String::AllocFromModifiedUtf8(soa.Self(), "robot"));
906
907  // TODO: Remove EXPECT_FALSE when GCC can handle EXPECT_EQ
908  // http://code.google.com/p/googletest/issues/detail?id=322
909  EXPECT_FALSE(s0->GetBoolean(statics.Get()));
910  EXPECT_EQ(6, s1->GetByte(statics.Get()));
911  EXPECT_EQ('b', s2->GetChar(statics.Get()));
912  EXPECT_EQ(-535, s3->GetShort(statics.Get()));
913  EXPECT_EQ(2000000001, s4->GetInt(statics.Get()));
914  EXPECT_EQ(INT64_C(0x34567890abcdef12), s5->GetLong(statics.Get()));
915  EXPECT_EQ(0.75, s6->GetFloat(statics.Get()));
916  EXPECT_EQ(16777219, s7->GetDouble(statics.Get()));
917  EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("robot"));
918}
919
920TEST_F(ClassLinkerTest, Interfaces) {
921  ScopedObjectAccess soa(Thread::Current());
922  StackHandleScope<6> hs(soa.Self());
923  Handle<mirror::ClassLoader> class_loader(
924      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Interfaces"))));
925  Handle<mirror::Class> I(
926      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
927  Handle<mirror::Class> J(
928      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
929  Handle<mirror::Class> K(
930      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$K;", class_loader)));
931  Handle<mirror::Class> A(
932      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$A;", class_loader)));
933  Handle<mirror::Class> B(
934      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$B;", class_loader)));
935  EXPECT_TRUE(I->IsAssignableFrom(A.Get()));
936  EXPECT_TRUE(J->IsAssignableFrom(A.Get()));
937  EXPECT_TRUE(J->IsAssignableFrom(K.Get()));
938  EXPECT_TRUE(K->IsAssignableFrom(B.Get()));
939  EXPECT_TRUE(J->IsAssignableFrom(B.Get()));
940
941  const Signature void_sig = I->GetDexCache()->GetDexFile()->CreateSignature("()V");
942  mirror::ArtMethod* Ii = I->FindVirtualMethod("i", void_sig);
943  mirror::ArtMethod* Jj1 = J->FindVirtualMethod("j1", void_sig);
944  mirror::ArtMethod* Jj2 = J->FindVirtualMethod("j2", void_sig);
945  mirror::ArtMethod* Kj1 = K->FindInterfaceMethod("j1", void_sig);
946  mirror::ArtMethod* Kj2 = K->FindInterfaceMethod("j2", void_sig);
947  mirror::ArtMethod* Kk = K->FindInterfaceMethod("k", void_sig);
948  mirror::ArtMethod* Ai = A->FindVirtualMethod("i", void_sig);
949  mirror::ArtMethod* Aj1 = A->FindVirtualMethod("j1", void_sig);
950  mirror::ArtMethod* Aj2 = A->FindVirtualMethod("j2", void_sig);
951  ASSERT_TRUE(Ii != NULL);
952  ASSERT_TRUE(Jj1 != NULL);
953  ASSERT_TRUE(Jj2 != NULL);
954  ASSERT_TRUE(Kj1 != NULL);
955  ASSERT_TRUE(Kj2 != NULL);
956  ASSERT_TRUE(Kk != NULL);
957  ASSERT_TRUE(Ai != NULL);
958  ASSERT_TRUE(Aj1 != NULL);
959  ASSERT_TRUE(Aj2 != NULL);
960  EXPECT_NE(Ii, Ai);
961  EXPECT_NE(Jj1, Aj1);
962  EXPECT_NE(Jj2, Aj2);
963  EXPECT_EQ(Kj1, Jj1);
964  EXPECT_EQ(Kj2, Jj2);
965  EXPECT_EQ(Ai, A->FindVirtualMethodForInterface(Ii));
966  EXPECT_EQ(Aj1, A->FindVirtualMethodForInterface(Jj1));
967  EXPECT_EQ(Aj2, A->FindVirtualMethodForInterface(Jj2));
968  EXPECT_EQ(Ai, A->FindVirtualMethodForVirtualOrInterface(Ii));
969  EXPECT_EQ(Aj1, A->FindVirtualMethodForVirtualOrInterface(Jj1));
970  EXPECT_EQ(Aj2, A->FindVirtualMethodForVirtualOrInterface(Jj2));
971
972  mirror::ArtField* Afoo = mirror::Class::FindStaticField(soa.Self(), A, "foo",
973                                                          "Ljava/lang/String;");
974  mirror::ArtField* Bfoo = mirror::Class::FindStaticField(soa.Self(), B, "foo",
975                                                          "Ljava/lang/String;");
976  mirror::ArtField* Jfoo = mirror::Class::FindStaticField(soa.Self(), J, "foo",
977                                                          "Ljava/lang/String;");
978  mirror::ArtField* Kfoo = mirror::Class::FindStaticField(soa.Self(), K, "foo",
979                                                          "Ljava/lang/String;");
980  ASSERT_TRUE(Afoo != NULL);
981  EXPECT_EQ(Afoo, Bfoo);
982  EXPECT_EQ(Afoo, Jfoo);
983  EXPECT_EQ(Afoo, Kfoo);
984}
985
986TEST_F(ClassLinkerTest, ResolveVerifyAndClinit) {
987  // pretend we are trying to get the static storage for the StaticsFromCode class.
988
989  // case 1, get the uninitialized storage from StaticsFromCode.<clinit>
990  // case 2, get the initialized storage from StaticsFromCode.getS0
991
992  ScopedObjectAccess soa(Thread::Current());
993  jobject jclass_loader = LoadDex("StaticsFromCode");
994  StackHandleScope<1> hs(soa.Self());
995  Handle<mirror::ClassLoader> class_loader(
996      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
997  const DexFile* dex_file = Runtime::Current()->GetCompileTimeClassPath(jclass_loader)[0];
998  CHECK(dex_file != NULL);
999  mirror::Class* klass = class_linker_->FindClass(soa.Self(), "LStaticsFromCode;", class_loader);
1000  mirror::ArtMethod* clinit = klass->FindClassInitializer();
1001  mirror::ArtMethod* getS0 = klass->FindDirectMethod("getS0", "()Ljava/lang/Object;");
1002  const DexFile::StringId* string_id = dex_file->FindStringId("LStaticsFromCode;");
1003  ASSERT_TRUE(string_id != NULL);
1004  const DexFile::TypeId* type_id = dex_file->FindTypeId(dex_file->GetIndexForStringId(*string_id));
1005  ASSERT_TRUE(type_id != NULL);
1006  uint32_t type_idx = dex_file->GetIndexForTypeId(*type_id);
1007  mirror::Class* uninit = ResolveVerifyAndClinit(type_idx, clinit, Thread::Current(), true, false);
1008  EXPECT_TRUE(uninit != NULL);
1009  EXPECT_FALSE(uninit->IsInitialized());
1010  mirror::Class* init = ResolveVerifyAndClinit(type_idx, getS0, Thread::Current(), true, false);
1011  EXPECT_TRUE(init != NULL);
1012  EXPECT_TRUE(init->IsInitialized());
1013}
1014
1015TEST_F(ClassLinkerTest, FinalizableBit) {
1016  ScopedObjectAccess soa(Thread::Current());
1017  mirror::Class* c;
1018
1019  // Object has a finalize method, but we know it's empty.
1020  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1021  EXPECT_FALSE(c->IsFinalizable());
1022
1023  // Enum has a finalize method to prevent its subclasses from implementing one.
1024  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Enum;");
1025  EXPECT_FALSE(c->IsFinalizable());
1026
1027  // RoundingMode is an enum.
1028  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/math/RoundingMode;");
1029  EXPECT_FALSE(c->IsFinalizable());
1030
1031  // RandomAccessFile extends Object and overrides finalize.
1032  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/RandomAccessFile;");
1033  EXPECT_TRUE(c->IsFinalizable());
1034
1035  // FileInputStream is finalizable and extends InputStream which isn't.
1036  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/InputStream;");
1037  EXPECT_FALSE(c->IsFinalizable());
1038  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/FileInputStream;");
1039  EXPECT_TRUE(c->IsFinalizable());
1040
1041  // ScheduledThreadPoolExecutor doesn't have a finalize method but
1042  // extends ThreadPoolExecutor which does.
1043  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ThreadPoolExecutor;");
1044  EXPECT_TRUE(c->IsFinalizable());
1045  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ScheduledThreadPoolExecutor;");
1046  EXPECT_TRUE(c->IsFinalizable());
1047}
1048
1049TEST_F(ClassLinkerTest, ClassRootDescriptors) {
1050  ScopedObjectAccess soa(Thread::Current());
1051  for (int i = 0; i < ClassLinker::kClassRootsMax; i++) {
1052    mirror::Class* klass = class_linker_->GetClassRoot(ClassLinker::ClassRoot(i));
1053    EXPECT_TRUE(!klass->GetDescriptor().empty());
1054    EXPECT_STREQ(klass->GetDescriptor().c_str(),
1055                 class_linker_->GetClassRootDescriptor(ClassLinker::ClassRoot(i))) << " i = " << i;
1056  }
1057}
1058
1059TEST_F(ClassLinkerTest, ValidatePredefinedClassSizes) {
1060  ScopedObjectAccess soa(Thread::Current());
1061  NullHandle<mirror::ClassLoader> class_loader;
1062  mirror::Class* c;
1063
1064  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Class;", class_loader);
1065  EXPECT_EQ(c->GetClassSize(), mirror::Class::ClassClassSize());
1066
1067  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Object;", class_loader);
1068  EXPECT_EQ(c->GetClassSize(), mirror::Object::ClassSize());
1069
1070  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/String;", class_loader);
1071  EXPECT_EQ(c->GetClassSize(), mirror::String::ClassSize());
1072
1073  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/DexCache;", class_loader);
1074  EXPECT_EQ(c->GetClassSize(), mirror::DexCache::ClassSize());
1075
1076  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/reflect/ArtField;", class_loader);
1077  EXPECT_EQ(c->GetClassSize(), mirror::ArtField::ClassSize());
1078
1079  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/reflect/ArtMethod;", class_loader);
1080  EXPECT_EQ(c->GetClassSize(), mirror::ArtMethod::ClassSize());
1081}
1082
1083}  // namespace art
1084