class_linker_test.cc revision 2cdbad7c62f126581ec5177104de961c4d71adaa 
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 "field_helper.h"
27#include "gc/heap.h"
28#include "mirror/art_field-inl.h"
29#include "mirror/art_method.h"
30#include "mirror/art_method-inl.h"
31#include "mirror/class-inl.h"
32#include "mirror/dex_cache.h"
33#include "mirror/object-inl.h"
34#include "mirror/object_array-inl.h"
35#include "mirror/proxy.h"
36#include "mirror/reference.h"
37#include "mirror/stack_trace_element.h"
38#include "mirror/string-inl.h"
39#include "handle_scope-inl.h"
40#include "scoped_thread_state_change.h"
41#include "thread-inl.h"
42
43namespace art {
44
45class ClassLinkerTest : public CommonRuntimeTest {
46 protected:
47  void AssertNonExistentClass(const std::string& descriptor)
48      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
49    Thread* self = Thread::Current();
50    EXPECT_TRUE(class_linker_->FindSystemClass(self, descriptor.c_str()) == NULL);
51    EXPECT_TRUE(self->IsExceptionPending());
52    mirror::Object* exception = self->GetException(NULL);
53    self->ClearException();
54    mirror::Class* exception_class =
55        class_linker_->FindSystemClass(self, "Ljava/lang/NoClassDefFoundError;");
56    EXPECT_TRUE(exception->InstanceOf(exception_class));
57  }
58
59  void AssertPrimitiveClass(const std::string& descriptor)
60      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
61    Thread* self = Thread::Current();
62    AssertPrimitiveClass(descriptor, class_linker_->FindSystemClass(self, descriptor.c_str()));
63  }
64
65  void AssertPrimitiveClass(const std::string& descriptor, mirror::Class* primitive)
66      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
67    ASSERT_TRUE(primitive != NULL);
68    ASSERT_TRUE(primitive->GetClass() != NULL);
69    ASSERT_EQ(primitive->GetClass(), primitive->GetClass()->GetClass());
70    EXPECT_TRUE(primitive->GetClass()->GetSuperClass() != NULL);
71    ASSERT_STREQ(descriptor.c_str(), primitive->GetDescriptor().c_str());
72    EXPECT_TRUE(primitive->GetSuperClass() == NULL);
73    EXPECT_FALSE(primitive->HasSuperClass());
74    EXPECT_TRUE(primitive->GetClassLoader() == NULL);
75    EXPECT_EQ(mirror::Class::kStatusInitialized, primitive->GetStatus());
76    EXPECT_FALSE(primitive->IsErroneous());
77    EXPECT_TRUE(primitive->IsLoaded());
78    EXPECT_TRUE(primitive->IsResolved());
79    EXPECT_TRUE(primitive->IsVerified());
80    EXPECT_TRUE(primitive->IsInitialized());
81    EXPECT_FALSE(primitive->IsArrayInstance());
82    EXPECT_FALSE(primitive->IsArrayClass());
83    EXPECT_TRUE(primitive->GetComponentType() == NULL);
84    EXPECT_FALSE(primitive->IsInterface());
85    EXPECT_TRUE(primitive->IsPublic());
86    EXPECT_TRUE(primitive->IsFinal());
87    EXPECT_TRUE(primitive->IsPrimitive());
88    EXPECT_FALSE(primitive->IsSynthetic());
89    EXPECT_EQ(0U, primitive->NumDirectMethods());
90    EXPECT_EQ(0U, primitive->NumVirtualMethods());
91    EXPECT_EQ(0U, primitive->NumInstanceFields());
92    EXPECT_EQ(0U, primitive->NumStaticFields());
93    EXPECT_EQ(0U, primitive->NumDirectInterfaces());
94    EXPECT_FALSE(primitive->HasVTable());
95    EXPECT_EQ(0, primitive->GetIfTableCount());
96    EXPECT_TRUE(primitive->GetIfTable() == NULL);
97    EXPECT_EQ(kAccPublic | kAccFinal | kAccAbstract, primitive->GetAccessFlags());
98  }
99
100  void AssertArrayClass(const std::string& array_descriptor,
101                        const std::string& component_type,
102                        mirror::ClassLoader* class_loader)
103      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
104    Thread* self = Thread::Current();
105    StackHandleScope<2> hs(self);
106    Handle<mirror::ClassLoader> loader(hs.NewHandle(class_loader));
107    Handle<mirror::Class> array(
108        hs.NewHandle(class_linker_->FindClass(self, array_descriptor.c_str(), loader)));
109    EXPECT_STREQ(component_type.c_str(), array->GetComponentType()->GetDescriptor().c_str());
110    EXPECT_EQ(class_loader, array->GetClassLoader());
111    EXPECT_EQ(kAccFinal | kAccAbstract, (array->GetAccessFlags() & (kAccFinal | kAccAbstract)));
112    AssertArrayClass(array_descriptor, array);
113  }
114
115  void AssertArrayClass(const std::string& array_descriptor, Handle<mirror::Class> array)
116      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
117    ASSERT_TRUE(array.Get() != NULL);
118    ASSERT_TRUE(array->GetClass() != NULL);
119    ASSERT_EQ(array->GetClass(), array->GetClass()->GetClass());
120    EXPECT_TRUE(array->GetClass()->GetSuperClass() != NULL);
121    ASSERT_STREQ(array_descriptor.c_str(), array->GetDescriptor().c_str());
122    EXPECT_TRUE(array->GetSuperClass() != NULL);
123    Thread* self = Thread::Current();
124    EXPECT_EQ(class_linker_->FindSystemClass(self, "Ljava/lang/Object;"), array->GetSuperClass());
125    EXPECT_TRUE(array->HasSuperClass());
126    ASSERT_TRUE(array->GetComponentType() != NULL);
127    ASSERT_TRUE(!array->GetComponentType()->GetDescriptor().empty());
128    EXPECT_EQ(mirror::Class::kStatusInitialized, array->GetStatus());
129    EXPECT_FALSE(array->IsErroneous());
130    EXPECT_TRUE(array->IsLoaded());
131    EXPECT_TRUE(array->IsResolved());
132    EXPECT_TRUE(array->IsVerified());
133    EXPECT_TRUE(array->IsInitialized());
134    EXPECT_FALSE(array->IsArrayInstance());
135    EXPECT_TRUE(array->IsArrayClass());
136    EXPECT_FALSE(array->IsInterface());
137    EXPECT_EQ(array->GetComponentType()->IsPublic(), array->IsPublic());
138    EXPECT_TRUE(array->IsFinal());
139    EXPECT_FALSE(array->IsPrimitive());
140    EXPECT_FALSE(array->IsSynthetic());
141    EXPECT_EQ(0U, array->NumDirectMethods());
142    EXPECT_EQ(0U, array->NumVirtualMethods());
143    EXPECT_EQ(0U, array->NumInstanceFields());
144    EXPECT_EQ(0U, array->NumStaticFields());
145    EXPECT_EQ(2U, array->NumDirectInterfaces());
146    EXPECT_TRUE(array->ShouldHaveEmbeddedImtAndVTable());
147    EXPECT_EQ(2, array->GetIfTableCount());
148    ASSERT_TRUE(array->GetIfTable() != NULL);
149    mirror::Class* direct_interface0 = mirror::Class::GetDirectInterface(self, array, 0);
150    EXPECT_TRUE(direct_interface0 != nullptr);
151    EXPECT_STREQ(direct_interface0->GetDescriptor().c_str(), "Ljava/lang/Cloneable;");
152    mirror::Class* direct_interface1 = mirror::Class::GetDirectInterface(self, array, 1);
153    EXPECT_STREQ(direct_interface1->GetDescriptor().c_str(), "Ljava/io/Serializable;");
154    mirror::Class* array_ptr = array->GetComponentType();
155    EXPECT_EQ(class_linker_->FindArrayClass(self, &array_ptr), array.Get());
156  }
157
158  void AssertMethod(mirror::ArtMethod* method) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
159    EXPECT_TRUE(method != NULL);
160    EXPECT_TRUE(method->GetClass() != NULL);
161    EXPECT_TRUE(method->GetName() != NULL);
162    EXPECT_TRUE(method->GetSignature() != Signature::NoSignature());
163
164    EXPECT_TRUE(method->GetDexCacheStrings() != NULL);
165    EXPECT_TRUE(method->GetDexCacheResolvedMethods() != NULL);
166    EXPECT_TRUE(method->GetDexCacheResolvedTypes() != NULL);
167    EXPECT_EQ(method->GetDeclaringClass()->GetDexCache()->GetStrings(),
168              method->GetDexCacheStrings());
169    EXPECT_EQ(method->GetDeclaringClass()->GetDexCache()->GetResolvedMethods(),
170              method->GetDexCacheResolvedMethods());
171    EXPECT_EQ(method->GetDeclaringClass()->GetDexCache()->GetResolvedTypes(),
172              method->GetDexCacheResolvedTypes());
173  }
174
175  void AssertField(mirror::Class* klass, mirror::ArtField* field)
176      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
177    EXPECT_TRUE(field != NULL);
178    EXPECT_TRUE(field->GetClass() != NULL);
179    EXPECT_EQ(klass, field->GetDeclaringClass());
180    EXPECT_TRUE(field->GetName() != NULL);
181    StackHandleScope<1> hs(Thread::Current());
182    FieldHelper fh(hs.NewHandle(field));
183    EXPECT_TRUE(fh.GetType() != NULL);
184  }
185
186  void AssertClass(const std::string& descriptor, Handle<mirror::Class> klass)
187      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
188    EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor().c_str());
189    if (descriptor == "Ljava/lang/Object;") {
190      EXPECT_FALSE(klass->HasSuperClass());
191    } else {
192      EXPECT_TRUE(klass->HasSuperClass());
193      EXPECT_TRUE(klass->GetSuperClass() != NULL);
194    }
195    EXPECT_TRUE(klass->GetClass() != NULL);
196    EXPECT_EQ(klass->GetClass(), klass->GetClass()->GetClass());
197    EXPECT_TRUE(klass->GetDexCache() != NULL);
198    EXPECT_TRUE(klass->IsLoaded());
199    EXPECT_TRUE(klass->IsResolved());
200    EXPECT_FALSE(klass->IsErroneous());
201    EXPECT_FALSE(klass->IsArrayClass());
202    EXPECT_TRUE(klass->GetComponentType() == NULL);
203    EXPECT_TRUE(klass->IsInSamePackage(klass.Get()));
204    EXPECT_TRUE(mirror::Class::IsInSamePackage(klass->GetDescriptor().c_str(),
205                                               klass->GetDescriptor().c_str()));
206    if (klass->IsInterface()) {
207      EXPECT_TRUE(klass->IsAbstract());
208      if (klass->NumDirectMethods() == 1) {
209        EXPECT_TRUE(klass->GetDirectMethod(0)->IsClassInitializer());
210        EXPECT_TRUE(klass->GetDirectMethod(0)->IsDirect());
211      } else {
212        EXPECT_EQ(0U, klass->NumDirectMethods());
213      }
214    } else {
215      if (!klass->IsSynthetic()) {
216        EXPECT_NE(0U, klass->NumDirectMethods());
217      }
218    }
219    EXPECT_EQ(klass->IsInterface(), !klass->HasVTable());
220    mirror::IfTable* iftable = klass->GetIfTable();
221    for (int i = 0; i < klass->GetIfTableCount(); i++) {
222      mirror::Class* interface = iftable->GetInterface(i);
223      ASSERT_TRUE(interface != NULL);
224      if (klass->IsInterface()) {
225        EXPECT_EQ(0U, iftable->GetMethodArrayCount(i));
226      } else {
227        EXPECT_EQ(interface->NumVirtualMethods(), iftable->GetMethodArrayCount(i));
228      }
229    }
230    if (klass->IsAbstract()) {
231      EXPECT_FALSE(klass->IsFinal());
232    } else {
233      EXPECT_FALSE(klass->IsAnnotation());
234    }
235    if (klass->IsFinal()) {
236      EXPECT_FALSE(klass->IsAbstract());
237      EXPECT_FALSE(klass->IsAnnotation());
238    }
239    if (klass->IsAnnotation()) {
240      EXPECT_FALSE(klass->IsFinal());
241      EXPECT_TRUE(klass->IsAbstract());
242    }
243
244    EXPECT_FALSE(klass->IsPrimitive());
245    EXPECT_TRUE(klass->CanAccess(klass.Get()));
246
247    for (size_t i = 0; i < klass->NumDirectMethods(); i++) {
248      mirror::ArtMethod* method = klass->GetDirectMethod(i);
249      AssertMethod(method);
250      EXPECT_TRUE(method->IsDirect());
251      EXPECT_EQ(klass.Get(), method->GetDeclaringClass());
252    }
253
254    for (size_t i = 0; i < klass->NumVirtualMethods(); i++) {
255      mirror::ArtMethod* method = klass->GetVirtualMethod(i);
256      AssertMethod(method);
257      EXPECT_FALSE(method->IsDirect());
258      EXPECT_TRUE(method->GetDeclaringClass()->IsAssignableFrom(klass.Get()));
259    }
260
261    for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
262      mirror::ArtField* field = klass->GetInstanceField(i);
263      AssertField(klass.Get(), field);
264      EXPECT_FALSE(field->IsStatic());
265    }
266
267    for (size_t i = 0; i < klass->NumStaticFields(); i++) {
268      mirror::ArtField* field = klass->GetStaticField(i);
269      AssertField(klass.Get(), field);
270      EXPECT_TRUE(field->IsStatic());
271    }
272
273    // Confirm that all instances fields are packed together at the start
274    EXPECT_GE(klass->NumInstanceFields(), klass->NumReferenceInstanceFields());
275    StackHandleScope<1> hs(Thread::Current());
276    FieldHelper fh(hs.NewHandle<mirror::ArtField>(nullptr));
277    for (size_t i = 0; i < klass->NumReferenceInstanceFields(); i++) {
278      mirror::ArtField* field = klass->GetInstanceField(i);
279      fh.ChangeField(field);
280      ASSERT_TRUE(!field->IsPrimitiveType());
281      mirror::Class* field_type = fh.GetType();
282      ASSERT_TRUE(field_type != NULL);
283      ASSERT_TRUE(!field_type->IsPrimitive());
284    }
285    for (size_t i = klass->NumReferenceInstanceFields(); i < klass->NumInstanceFields(); i++) {
286      mirror::ArtField* field = klass->GetInstanceField(i);
287      fh.ChangeField(field);
288      mirror::Class* field_type = fh.GetType();
289      ASSERT_TRUE(field_type != NULL);
290      if (!fh.GetField()->IsPrimitiveType() || !field_type->IsPrimitive()) {
291        // While Reference.referent is not primitive, the ClassLinker
292        // treats it as such so that the garbage collector won't scan it.
293        EXPECT_EQ(PrettyField(fh.GetField()), "java.lang.Object java.lang.ref.Reference.referent");
294      }
295    }
296
297    size_t total_num_reference_instance_fields = 0;
298    mirror::Class* k = klass.Get();
299    while (k != NULL) {
300      total_num_reference_instance_fields += k->NumReferenceInstanceFields();
301      k = k->GetSuperClass();
302    }
303    EXPECT_EQ(klass->GetReferenceInstanceOffsets() == 0, total_num_reference_instance_fields == 0);
304  }
305
306  void AssertDexFileClass(mirror::ClassLoader* class_loader, const std::string& descriptor)
307      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
308    ASSERT_TRUE(descriptor != NULL);
309    Thread* self = Thread::Current();
310    StackHandleScope<1> hs(self);
311    Handle<mirror::Class> klass(
312        hs.NewHandle(class_linker_->FindSystemClass(self, descriptor.c_str())));
313    ASSERT_TRUE(klass.Get() != nullptr);
314    EXPECT_STREQ(descriptor.c_str(), klass.Get()->GetDescriptor().c_str());
315    EXPECT_EQ(class_loader, klass->GetClassLoader());
316    if (klass->IsPrimitive()) {
317      AssertPrimitiveClass(descriptor, klass.Get());
318    } else if (klass->IsArrayClass()) {
319      AssertArrayClass(descriptor, klass);
320    } else {
321      AssertClass(descriptor, klass);
322    }
323  }
324
325  void AssertDexFile(const DexFile* dex, mirror::ClassLoader* class_loader)
326      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
327    ASSERT_TRUE(dex != NULL);
328
329    // Verify all the classes defined in this file
330    for (size_t i = 0; i < dex->NumClassDefs(); i++) {
331      const DexFile::ClassDef& class_def = dex->GetClassDef(i);
332      const char* descriptor = dex->GetClassDescriptor(class_def);
333      AssertDexFileClass(class_loader, descriptor);
334    }
335    // Verify all the types referenced by this file
336    for (size_t i = 0; i < dex->NumTypeIds(); i++) {
337      const DexFile::TypeId& type_id = dex->GetTypeId(i);
338      const char* descriptor = dex->GetTypeDescriptor(type_id);
339      AssertDexFileClass(class_loader, descriptor);
340    }
341    class_linker_->VisitRoots(TestRootVisitor, NULL, kVisitRootFlagAllRoots);
342    // Verify the dex cache has resolution methods in all resolved method slots
343    mirror::DexCache* dex_cache = class_linker_->FindDexCache(*dex);
344    mirror::ObjectArray<mirror::ArtMethod>* resolved_methods = dex_cache->GetResolvedMethods();
345    for (size_t i = 0; i < static_cast<size_t>(resolved_methods->GetLength()); i++) {
346      EXPECT_TRUE(resolved_methods->Get(i) != NULL) << dex->GetLocation() << " i=" << i;
347    }
348  }
349
350  static void TestRootVisitor(mirror::Object** root, void*, uint32_t, RootType) {
351    EXPECT_TRUE(*root != NULL);
352  }
353};
354
355struct CheckOffset {
356  size_t cpp_offset;
357  const char* java_name;
358  CheckOffset(size_t c, const char* j) : cpp_offset(c), java_name(j) {}
359};
360
361template <typename T>
362struct CheckOffsets {
363  CheckOffsets(bool is_static, const char* class_descriptor)
364      : is_static(is_static), class_descriptor(class_descriptor) {}
365  bool is_static;
366  std::string class_descriptor;
367  std::vector<CheckOffset> offsets;
368
369  bool Check() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
370    Thread* self = Thread::Current();
371    mirror::Class* klass =
372        Runtime::Current()->GetClassLinker()->FindSystemClass(self, class_descriptor.c_str());
373    CHECK(klass != NULL) << class_descriptor;
374
375    bool error = false;
376
377    if (!klass->IsClassClass() && !is_static) {
378      size_t expected_size = is_static ? klass->GetClassSize(): klass->GetObjectSize();
379      if (sizeof(T) != expected_size) {
380        LOG(ERROR) << "Class size mismatch:"
381           << " class=" << class_descriptor
382           << " Java=" << expected_size
383           << " C++=" << sizeof(T);
384        error = true;
385      }
386    }
387
388    size_t num_fields = is_static ? klass->NumStaticFields() : klass->NumInstanceFields();
389    if (offsets.size() != num_fields) {
390      LOG(ERROR) << "Field count mismatch:"
391         << " class=" << class_descriptor
392         << " Java=" << num_fields
393         << " C++=" << offsets.size();
394      error = true;
395    }
396
397    for (size_t i = 0; i < offsets.size(); i++) {
398      mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
399      StringPiece field_name(field->GetName());
400      if (field_name != offsets[i].java_name) {
401        error = true;
402      }
403    }
404    if (error) {
405      for (size_t i = 0; i < offsets.size(); i++) {
406        CheckOffset& offset = offsets[i];
407        mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
408        StringPiece field_name(field->GetName());
409        if (field_name != offsets[i].java_name) {
410          LOG(ERROR) << "JAVA FIELD ORDER MISMATCH NEXT LINE:";
411        }
412        LOG(ERROR) << "Java field order:"
413           << " i=" << i << " class=" << class_descriptor
414           << " Java=" << field_name
415           << " CheckOffsets=" << offset.java_name;
416      }
417    }
418
419    for (size_t i = 0; i < offsets.size(); i++) {
420      CheckOffset& offset = offsets[i];
421      mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
422      if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
423        error = true;
424      }
425    }
426    if (error) {
427      for (size_t i = 0; i < offsets.size(); i++) {
428        CheckOffset& offset = offsets[i];
429        mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
430        if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
431          LOG(ERROR) << "OFFSET MISMATCH NEXT LINE:";
432        }
433        LOG(ERROR) << "Offset: class=" << class_descriptor << " field=" << offset.java_name
434           << " Java=" << field->GetOffset().Uint32Value() << " C++=" << offset.cpp_offset;
435      }
436    }
437
438    return !error;
439  };
440
441 private:
442  DISALLOW_IMPLICIT_CONSTRUCTORS(CheckOffsets);
443};
444
445// Note that ClassLinkerTest.ValidateFieldOrderOfJavaCppUnionClasses
446// is first since if it is failing, others are unlikely to succeed.
447
448struct ObjectOffsets : public CheckOffsets<mirror::Object> {
449  ObjectOffsets() : CheckOffsets<mirror::Object>(false, "Ljava/lang/Object;") {
450    // alphabetical references
451    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, klass_),   "shadow$_klass_"));
452
453    // alphabetical 32-bit
454    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, monitor_), "shadow$_monitor_"));
455#ifdef USE_BAKER_OR_BROOKS_READ_BARRIER
456    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, x_rb_ptr_), "shadow$_x_rb_ptr_"));
457    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, x_xpadding_), "shadow$_x_xpadding_"));
458#endif
459  };
460};
461
462struct ArtFieldOffsets : public CheckOffsets<mirror::ArtField> {
463  ArtFieldOffsets() : CheckOffsets<mirror::ArtField>(false, "Ljava/lang/reflect/ArtField;") {
464    // alphabetical references
465    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, declaring_class_), "declaringClass"));
466
467    // alphabetical 32-bit
468    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, access_flags_),    "accessFlags"));
469    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, field_dex_idx_),   "fieldDexIndex"));
470    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, offset_),          "offset"));
471  };
472};
473
474struct ArtMethodOffsets : public CheckOffsets<mirror::ArtMethod> {
475  ArtMethodOffsets() : CheckOffsets<mirror::ArtMethod>(false, "Ljava/lang/reflect/ArtMethod;") {
476    // alphabetical references
477    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, declaring_class_),                      "declaringClass"));
478    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_resolved_methods_),           "dexCacheResolvedMethods"));
479    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_resolved_types_),             "dexCacheResolvedTypes"));
480    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_strings_),                    "dexCacheStrings"));
481
482    // alphabetical 64-bit
483    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_interpreter_),            "entryPointFromInterpreter"));
484    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_jni_),                    "entryPointFromJni"));
485    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_portable_compiled_code_), "entryPointFromPortableCompiledCode"));
486    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_quick_compiled_code_),    "entryPointFromQuickCompiledCode"));
487    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, gc_map_),                                  "gcMap"));
488
489    // alphabetical 32-bit
490    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, access_flags_),                   "accessFlags"));
491    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_code_item_offset_),           "dexCodeItemOffset"));
492    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_method_index_),               "dexMethodIndex"));
493    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, method_index_),                   "methodIndex"));
494  };
495};
496
497struct ClassOffsets : public CheckOffsets<mirror::Class> {
498  ClassOffsets() : CheckOffsets<mirror::Class>(false, "Ljava/lang/Class;") {
499    // alphabetical references
500    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, class_loader_),                  "classLoader"));
501    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, component_type_),                "componentType"));
502    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_cache_),                     "dexCache"));
503    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, direct_methods_),                "directMethods"));
504    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, ifields_),                       "iFields"));
505    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, iftable_),                       "ifTable"));
506    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, imtable_),                       "imTable"));
507    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, name_),                          "name"));
508    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, sfields_),                       "sFields"));
509    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, super_class_),                   "superClass"));
510    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, verify_error_class_),            "verifyErrorClass"));
511    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, virtual_methods_),               "virtualMethods"));
512    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, vtable_),                        "vtable"));
513
514    // alphabetical 32-bit
515    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, access_flags_),                  "accessFlags"));
516    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, class_size_),                    "classSize"));
517    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, clinit_thread_id_),              "clinitThreadId"));
518    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_class_def_idx_),             "dexClassDefIndex"));
519    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_type_idx_),                  "dexTypeIndex"));
520    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_instance_fields_), "numReferenceInstanceFields"));
521    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_static_fields_),   "numReferenceStaticFields"));
522    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, object_size_),                   "objectSize"));
523    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, primitive_type_),                "primitiveType"));
524    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, reference_instance_offsets_),    "referenceInstanceOffsets"));
525    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, reference_static_offsets_),      "referenceStaticOffsets"));
526    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, status_),                        "status"));
527  };
528};
529
530struct StringOffsets : public CheckOffsets<mirror::String> {
531  StringOffsets() : CheckOffsets<mirror::String>(false, "Ljava/lang/String;") {
532    // alphabetical references
533    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, array_),     "value"));
534
535    // alphabetical 32-bit
536    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, count_),     "count"));
537    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, hash_code_), "hashCode"));
538    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, offset_),    "offset"));
539  };
540};
541
542struct ThrowableOffsets : public CheckOffsets<mirror::Throwable> {
543  ThrowableOffsets() : CheckOffsets<mirror::Throwable>(false, "Ljava/lang/Throwable;") {
544    // alphabetical references
545    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, cause_),                 "cause"));
546    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, detail_message_),        "detailMessage"));
547    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_state_),           "stackState"));
548    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_trace_),           "stackTrace"));
549    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, suppressed_exceptions_), "suppressedExceptions"));
550  };
551};
552
553struct StackTraceElementOffsets : public CheckOffsets<mirror::StackTraceElement> {
554  StackTraceElementOffsets() : CheckOffsets<mirror::StackTraceElement>(false, "Ljava/lang/StackTraceElement;") {
555    // alphabetical references
556    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, declaring_class_), "declaringClass"));
557    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, file_name_),       "fileName"));
558    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, method_name_),     "methodName"));
559    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, line_number_),     "lineNumber"));
560  };
561};
562
563struct ClassLoaderOffsets : public CheckOffsets<mirror::ClassLoader> {
564  ClassLoaderOffsets() : CheckOffsets<mirror::ClassLoader>(false, "Ljava/lang/ClassLoader;") {
565    // alphabetical references
566    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, packages_),   "packages"));
567    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, parent_),     "parent"));
568    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, proxyCache_), "proxyCache"));
569  };
570};
571
572struct ProxyOffsets : public CheckOffsets<mirror::Proxy> {
573  ProxyOffsets() : CheckOffsets<mirror::Proxy>(false, "Ljava/lang/reflect/Proxy;") {
574    // alphabetical references
575    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Proxy, h_), "h"));
576  };
577};
578
579struct DexCacheOffsets : public CheckOffsets<mirror::DexCache> {
580  DexCacheOffsets() : CheckOffsets<mirror::DexCache>(false, "Ljava/lang/DexCache;") {
581    // alphabetical references
582    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_),                        "dex"));
583    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, location_),                   "location"));
584    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_),            "resolvedFields"));
585    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_),           "resolvedMethods"));
586    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_),             "resolvedTypes"));
587    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_),                    "strings"));
588    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_file_),                   "dexFile"));
589  };
590};
591
592struct ReferenceOffsets : public CheckOffsets<mirror::Reference> {
593  ReferenceOffsets() : CheckOffsets<mirror::Reference>(false, "Ljava/lang/ref/Reference;") {
594    // alphabetical references
595    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, pending_next_),  "pendingNext"));
596    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, queue_),         "queue"));
597    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, queue_next_),    "queueNext"));
598    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, referent_),      "referent"));
599  };
600};
601
602struct FinalizerReferenceOffsets : public CheckOffsets<mirror::FinalizerReference> {
603  FinalizerReferenceOffsets() : CheckOffsets<mirror::FinalizerReference>(false, "Ljava/lang/ref/FinalizerReference;") {
604    // alphabetical references
605    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, next_),   "next"));
606    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, prev_),   "prev"));
607    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, zombie_), "zombie"));
608  };
609};
610
611// C++ fields must exactly match the fields in the Java classes. If this fails,
612// reorder the fields in the C++ class. Managed class fields are ordered by
613// ClassLinker::LinkFields.
614TEST_F(ClassLinkerTest, ValidateFieldOrderOfJavaCppUnionClasses) {
615  ScopedObjectAccess soa(Thread::Current());
616  EXPECT_TRUE(ObjectOffsets().Check());
617  EXPECT_TRUE(ArtFieldOffsets().Check());
618  EXPECT_TRUE(ArtMethodOffsets().Check());
619  EXPECT_TRUE(ClassOffsets().Check());
620  EXPECT_TRUE(StringOffsets().Check());
621  EXPECT_TRUE(ThrowableOffsets().Check());
622  EXPECT_TRUE(StackTraceElementOffsets().Check());
623  EXPECT_TRUE(ClassLoaderOffsets().Check());
624  EXPECT_TRUE(ProxyOffsets().Check());
625  EXPECT_TRUE(DexCacheOffsets().Check());
626  EXPECT_TRUE(ReferenceOffsets().Check());
627  EXPECT_TRUE(FinalizerReferenceOffsets().Check());
628}
629
630TEST_F(ClassLinkerTest, FindClassNonexistent) {
631  ScopedObjectAccess soa(Thread::Current());
632  AssertNonExistentClass("NoSuchClass;");
633  AssertNonExistentClass("LNoSuchClass;");
634}
635
636TEST_F(ClassLinkerTest, FindClassNested) {
637  ScopedObjectAccess soa(Thread::Current());
638  StackHandleScope<1> hs(soa.Self());
639  Handle<mirror::ClassLoader> class_loader(
640      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Nested"))));
641
642  mirror::Class* outer = class_linker_->FindClass(soa.Self(), "LNested;", class_loader);
643  ASSERT_TRUE(outer != NULL);
644  EXPECT_EQ(0U, outer->NumVirtualMethods());
645  EXPECT_EQ(1U, outer->NumDirectMethods());
646
647  mirror::Class* inner = class_linker_->FindClass(soa.Self(), "LNested$Inner;", class_loader);
648  ASSERT_TRUE(inner != NULL);
649  EXPECT_EQ(0U, inner->NumVirtualMethods());
650  EXPECT_EQ(1U, inner->NumDirectMethods());
651}
652
653TEST_F(ClassLinkerTest, FindClass_Primitives) {
654  ScopedObjectAccess soa(Thread::Current());
655  const std::string expected("BCDFIJSZV");
656  for (int ch = 1; ch < 256; ++ch) {
657    std::string descriptor;
658    descriptor.push_back(ch);
659    if (expected.find(ch) == std::string::npos) {
660      AssertNonExistentClass(descriptor);
661    } else {
662      AssertPrimitiveClass(descriptor);
663    }
664  }
665}
666
667TEST_F(ClassLinkerTest, FindClass) {
668  ScopedObjectAccess soa(Thread::Current());
669  mirror::Class* JavaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
670  ASSERT_TRUE(JavaLangObject != NULL);
671  ASSERT_TRUE(JavaLangObject->GetClass() != NULL);
672  ASSERT_EQ(JavaLangObject->GetClass(), JavaLangObject->GetClass()->GetClass());
673  EXPECT_EQ(JavaLangObject, JavaLangObject->GetClass()->GetSuperClass());
674  ASSERT_STREQ(JavaLangObject->GetDescriptor().c_str(), "Ljava/lang/Object;");
675  EXPECT_TRUE(JavaLangObject->GetSuperClass() == NULL);
676  EXPECT_FALSE(JavaLangObject->HasSuperClass());
677  EXPECT_TRUE(JavaLangObject->GetClassLoader() == NULL);
678  EXPECT_EQ(mirror::Class::kStatusInitialized, JavaLangObject->GetStatus());
679  EXPECT_FALSE(JavaLangObject->IsErroneous());
680  EXPECT_TRUE(JavaLangObject->IsLoaded());
681  EXPECT_TRUE(JavaLangObject->IsResolved());
682  EXPECT_TRUE(JavaLangObject->IsVerified());
683  EXPECT_TRUE(JavaLangObject->IsInitialized());
684  EXPECT_FALSE(JavaLangObject->IsArrayInstance());
685  EXPECT_FALSE(JavaLangObject->IsArrayClass());
686  EXPECT_TRUE(JavaLangObject->GetComponentType() == NULL);
687  EXPECT_FALSE(JavaLangObject->IsInterface());
688  EXPECT_TRUE(JavaLangObject->IsPublic());
689  EXPECT_FALSE(JavaLangObject->IsFinal());
690  EXPECT_FALSE(JavaLangObject->IsPrimitive());
691  EXPECT_FALSE(JavaLangObject->IsSynthetic());
692  EXPECT_EQ(2U, JavaLangObject->NumDirectMethods());
693  EXPECT_EQ(11U, JavaLangObject->NumVirtualMethods());
694  if (!kUseBakerOrBrooksReadBarrier) {
695    EXPECT_EQ(2U, JavaLangObject->NumInstanceFields());
696  } else {
697    EXPECT_EQ(4U, JavaLangObject->NumInstanceFields());
698  }
699  EXPECT_STREQ(JavaLangObject->GetInstanceField(0)->GetName(), "shadow$_klass_");
700  EXPECT_STREQ(JavaLangObject->GetInstanceField(1)->GetName(), "shadow$_monitor_");
701  if (kUseBakerOrBrooksReadBarrier) {
702    EXPECT_STREQ(JavaLangObject->GetInstanceField(2)->GetName(), "shadow$_x_rb_ptr_");
703    EXPECT_STREQ(JavaLangObject->GetInstanceField(3)->GetName(), "shadow$_x_xpadding_");
704  }
705
706  EXPECT_EQ(0U, JavaLangObject->NumStaticFields());
707  EXPECT_EQ(0U, JavaLangObject->NumDirectInterfaces());
708
709  StackHandleScope<1> hs(soa.Self());
710  Handle<mirror::ClassLoader> class_loader(
711      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
712  AssertNonExistentClass("LMyClass;");
713  mirror::Class* MyClass = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader);
714  ASSERT_TRUE(MyClass != NULL);
715  ASSERT_TRUE(MyClass->GetClass() != NULL);
716  ASSERT_EQ(MyClass->GetClass(), MyClass->GetClass()->GetClass());
717  EXPECT_EQ(JavaLangObject, MyClass->GetClass()->GetSuperClass());
718  ASSERT_STREQ(MyClass->GetDescriptor().c_str(), "LMyClass;");
719  EXPECT_TRUE(MyClass->GetSuperClass() == JavaLangObject);
720  EXPECT_TRUE(MyClass->HasSuperClass());
721  EXPECT_EQ(class_loader.Get(), MyClass->GetClassLoader());
722  EXPECT_EQ(mirror::Class::kStatusResolved, MyClass->GetStatus());
723  EXPECT_FALSE(MyClass->IsErroneous());
724  EXPECT_TRUE(MyClass->IsLoaded());
725  EXPECT_TRUE(MyClass->IsResolved());
726  EXPECT_FALSE(MyClass->IsVerified());
727  EXPECT_FALSE(MyClass->IsInitialized());
728  EXPECT_FALSE(MyClass->IsArrayInstance());
729  EXPECT_FALSE(MyClass->IsArrayClass());
730  EXPECT_TRUE(MyClass->GetComponentType() == NULL);
731  EXPECT_FALSE(MyClass->IsInterface());
732  EXPECT_FALSE(MyClass->IsPublic());
733  EXPECT_FALSE(MyClass->IsFinal());
734  EXPECT_FALSE(MyClass->IsPrimitive());
735  EXPECT_FALSE(MyClass->IsSynthetic());
736  EXPECT_EQ(1U, MyClass->NumDirectMethods());
737  EXPECT_EQ(0U, MyClass->NumVirtualMethods());
738  EXPECT_EQ(0U, MyClass->NumInstanceFields());
739  EXPECT_EQ(0U, MyClass->NumStaticFields());
740  EXPECT_EQ(0U, MyClass->NumDirectInterfaces());
741
742  EXPECT_EQ(JavaLangObject->GetClass()->GetClass(), MyClass->GetClass()->GetClass());
743
744  // created by class_linker
745  AssertArrayClass("[C", "C", NULL);
746  AssertArrayClass("[Ljava/lang/Object;", "Ljava/lang/Object;", NULL);
747  // synthesized on the fly
748  AssertArrayClass("[[C", "[C", NULL);
749  AssertArrayClass("[[[LMyClass;", "[[LMyClass;", class_loader.Get());
750  // or not available at all
751  AssertNonExistentClass("[[[[LNonExistentClass;");
752}
753
754TEST_F(ClassLinkerTest, LibCore) {
755  ScopedObjectAccess soa(Thread::Current());
756  AssertDexFile(java_lang_dex_file_, NULL);
757}
758
759// The first reference array element must be a multiple of 4 bytes from the
760// start of the object
761TEST_F(ClassLinkerTest, ValidateObjectArrayElementsOffset) {
762  ScopedObjectAccess soa(Thread::Current());
763  mirror::Class* array_class = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
764  mirror::ObjectArray<mirror::String>* array =
765      mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), array_class, 0);
766  uintptr_t data_offset =
767      reinterpret_cast<uintptr_t>(array->GetRawData(sizeof(mirror::HeapReference<mirror::String>),
768                                                    0));
769  if (sizeof(mirror::HeapReference<mirror::String>) == sizeof(int32_t)) {
770    EXPECT_TRUE(IsAligned<4>(data_offset));  // Check 4 byte alignment.
771  } else {
772    EXPECT_TRUE(IsAligned<8>(data_offset));  // Check 8 byte alignment.
773  }
774}
775
776TEST_F(ClassLinkerTest, ValidatePrimitiveArrayElementsOffset) {
777  ScopedObjectAccess soa(Thread::Current());
778  StackHandleScope<5> hs(soa.Self());
779  Handle<mirror::LongArray> long_array(hs.NewHandle(mirror::LongArray::Alloc(soa.Self(), 0)));
780  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[J"), long_array->GetClass());
781  uintptr_t data_offset = reinterpret_cast<uintptr_t>(long_array->GetData());
782  EXPECT_TRUE(IsAligned<8>(data_offset));  // Longs require 8 byte alignment
783
784  Handle<mirror::DoubleArray> double_array(hs.NewHandle(mirror::DoubleArray::Alloc(soa.Self(), 0)));
785  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[D"), double_array->GetClass());
786  data_offset = reinterpret_cast<uintptr_t>(double_array->GetData());
787  EXPECT_TRUE(IsAligned<8>(data_offset));  // Doubles require 8 byte alignment
788
789  Handle<mirror::IntArray> int_array(hs.NewHandle(mirror::IntArray::Alloc(soa.Self(), 0)));
790  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[I"), int_array->GetClass());
791  data_offset = reinterpret_cast<uintptr_t>(int_array->GetData());
792  EXPECT_TRUE(IsAligned<4>(data_offset));  // Ints require 4 byte alignment
793
794  Handle<mirror::CharArray> char_array(hs.NewHandle(mirror::CharArray::Alloc(soa.Self(), 0)));
795  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[C"), char_array->GetClass());
796  data_offset = reinterpret_cast<uintptr_t>(char_array->GetData());
797  EXPECT_TRUE(IsAligned<2>(data_offset));  // Chars require 2 byte alignment
798
799  Handle<mirror::ShortArray> short_array(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 0)));
800  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[S"), short_array->GetClass());
801  data_offset = reinterpret_cast<uintptr_t>(short_array->GetData());
802  EXPECT_TRUE(IsAligned<2>(data_offset));  // Shorts require 2 byte alignment
803
804  // Take it as given that bytes and booleans have byte alignment
805}
806
807TEST_F(ClassLinkerTest, ValidateBoxedTypes) {
808  // Validate that the "value" field is always the 0th field in each of java.lang's box classes.
809  // This lets UnboxPrimitive avoid searching for the field by name at runtime.
810  ScopedObjectAccess soa(Thread::Current());
811  NullHandle<mirror::ClassLoader> class_loader;
812  mirror::Class* c;
813  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Boolean;", class_loader);
814  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
815  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Byte;", class_loader);
816  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
817  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Character;", class_loader);
818  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
819  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Double;", class_loader);
820  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
821  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Float;", class_loader);
822  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
823  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Integer;", class_loader);
824  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
825  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Long;", class_loader);
826  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
827  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Short;", class_loader);
828  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
829}
830
831TEST_F(ClassLinkerTest, TwoClassLoadersOneClass) {
832  ScopedObjectAccess soa(Thread::Current());
833  StackHandleScope<2> hs(soa.Self());
834  Handle<mirror::ClassLoader> class_loader_1(
835      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
836  Handle<mirror::ClassLoader> class_loader_2(
837      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
838  mirror::Class* MyClass_1 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_1);
839  mirror::Class* MyClass_2 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_2);
840  EXPECT_TRUE(MyClass_1 != nullptr);
841  EXPECT_TRUE(MyClass_2 != nullptr);
842  EXPECT_NE(MyClass_1, MyClass_2);
843}
844
845TEST_F(ClassLinkerTest, StaticFields) {
846  ScopedObjectAccess soa(Thread::Current());
847  StackHandleScope<2> hs(soa.Self());
848  Handle<mirror::ClassLoader> class_loader(
849      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Statics"))));
850  Handle<mirror::Class> statics(
851      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
852  class_linker_->EnsureInitialized(statics, true, true);
853
854  // Static final primitives that are initialized by a compile-time constant
855  // expression resolve to a copy of a constant value from the constant pool.
856  // So <clinit> should be null.
857  mirror::ArtMethod* clinit = statics->FindDirectMethod("<clinit>", "()V");
858  EXPECT_TRUE(clinit == NULL);
859
860  EXPECT_EQ(9U, statics->NumStaticFields());
861
862  mirror::ArtField* s0 = mirror::Class::FindStaticField(soa.Self(), statics, "s0", "Z");
863  EXPECT_STREQ(s0->GetClass()->GetDescriptor().c_str(), "Ljava/lang/reflect/ArtField;");
864  EXPECT_EQ(s0->GetTypeAsPrimitiveType(), Primitive::kPrimBoolean);
865  EXPECT_EQ(true, s0->GetBoolean(statics.Get()));
866  s0->SetBoolean<false>(statics.Get(), false);
867
868  mirror::ArtField* s1 = mirror::Class::FindStaticField(soa.Self(), statics, "s1", "B");
869  EXPECT_EQ(s1->GetTypeAsPrimitiveType(), Primitive::kPrimByte);
870  EXPECT_EQ(5, s1->GetByte(statics.Get()));
871  s1->SetByte<false>(statics.Get(), 6);
872
873  mirror::ArtField* s2 = mirror::Class::FindStaticField(soa.Self(), statics, "s2", "C");
874  EXPECT_EQ(s2->GetTypeAsPrimitiveType(), Primitive::kPrimChar);
875  EXPECT_EQ('a', s2->GetChar(statics.Get()));
876  s2->SetChar<false>(statics.Get(), 'b');
877
878  mirror::ArtField* s3 = mirror::Class::FindStaticField(soa.Self(), statics, "s3", "S");
879  EXPECT_EQ(s3->GetTypeAsPrimitiveType(), Primitive::kPrimShort);
880  EXPECT_EQ(-536, s3->GetShort(statics.Get()));
881  s3->SetShort<false>(statics.Get(), -535);
882
883  mirror::ArtField* s4 = mirror::Class::FindStaticField(soa.Self(), statics, "s4", "I");
884  EXPECT_EQ(s4->GetTypeAsPrimitiveType(), Primitive::kPrimInt);
885  EXPECT_EQ(2000000000, s4->GetInt(statics.Get()));
886  s4->SetInt<false>(statics.Get(), 2000000001);
887
888  mirror::ArtField* s5 = mirror::Class::FindStaticField(soa.Self(), statics, "s5", "J");
889  EXPECT_EQ(s5->GetTypeAsPrimitiveType(), Primitive::kPrimLong);
890  EXPECT_EQ(0x1234567890abcdefLL, s5->GetLong(statics.Get()));
891  s5->SetLong<false>(statics.Get(), INT64_C(0x34567890abcdef12));
892
893  mirror::ArtField* s6 = mirror::Class::FindStaticField(soa.Self(), statics, "s6", "F");
894  EXPECT_EQ(s6->GetTypeAsPrimitiveType(), Primitive::kPrimFloat);
895  EXPECT_EQ(0.5, s6->GetFloat(statics.Get()));
896  s6->SetFloat<false>(statics.Get(), 0.75);
897
898  mirror::ArtField* s7 = mirror::Class::FindStaticField(soa.Self(), statics, "s7", "D");
899  EXPECT_EQ(s7->GetTypeAsPrimitiveType(), Primitive::kPrimDouble);
900  EXPECT_EQ(16777217, s7->GetDouble(statics.Get()));
901  s7->SetDouble<false>(statics.Get(), 16777219);
902
903  mirror::ArtField* s8 = mirror::Class::FindStaticField(soa.Self(), statics, "s8",
904                                                        "Ljava/lang/String;");
905  EXPECT_EQ(s8->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
906  EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("android"));
907  s8->SetObject<false>(s8->GetDeclaringClass(),
908                       mirror::String::AllocFromModifiedUtf8(soa.Self(), "robot"));
909
910  // TODO: Remove EXPECT_FALSE when GCC can handle EXPECT_EQ
911  // http://code.google.com/p/googletest/issues/detail?id=322
912  EXPECT_FALSE(s0->GetBoolean(statics.Get()));
913  EXPECT_EQ(6, s1->GetByte(statics.Get()));
914  EXPECT_EQ('b', s2->GetChar(statics.Get()));
915  EXPECT_EQ(-535, s3->GetShort(statics.Get()));
916  EXPECT_EQ(2000000001, s4->GetInt(statics.Get()));
917  EXPECT_EQ(INT64_C(0x34567890abcdef12), s5->GetLong(statics.Get()));
918  EXPECT_EQ(0.75, s6->GetFloat(statics.Get()));
919  EXPECT_EQ(16777219, s7->GetDouble(statics.Get()));
920  EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("robot"));
921}
922
923TEST_F(ClassLinkerTest, Interfaces) {
924  ScopedObjectAccess soa(Thread::Current());
925  StackHandleScope<6> hs(soa.Self());
926  Handle<mirror::ClassLoader> class_loader(
927      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Interfaces"))));
928  Handle<mirror::Class> I(
929      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
930  Handle<mirror::Class> J(
931      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
932  Handle<mirror::Class> K(
933      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$K;", class_loader)));
934  Handle<mirror::Class> A(
935      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$A;", class_loader)));
936  Handle<mirror::Class> B(
937      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$B;", class_loader)));
938  EXPECT_TRUE(I->IsAssignableFrom(A.Get()));
939  EXPECT_TRUE(J->IsAssignableFrom(A.Get()));
940  EXPECT_TRUE(J->IsAssignableFrom(K.Get()));
941  EXPECT_TRUE(K->IsAssignableFrom(B.Get()));
942  EXPECT_TRUE(J->IsAssignableFrom(B.Get()));
943
944  const Signature void_sig = I->GetDexCache()->GetDexFile()->CreateSignature("()V");
945  mirror::ArtMethod* Ii = I->FindVirtualMethod("i", void_sig);
946  mirror::ArtMethod* Jj1 = J->FindVirtualMethod("j1", void_sig);
947  mirror::ArtMethod* Jj2 = J->FindVirtualMethod("j2", void_sig);
948  mirror::ArtMethod* Kj1 = K->FindInterfaceMethod("j1", void_sig);
949  mirror::ArtMethod* Kj2 = K->FindInterfaceMethod("j2", void_sig);
950  mirror::ArtMethod* Kk = K->FindInterfaceMethod("k", void_sig);
951  mirror::ArtMethod* Ai = A->FindVirtualMethod("i", void_sig);
952  mirror::ArtMethod* Aj1 = A->FindVirtualMethod("j1", void_sig);
953  mirror::ArtMethod* Aj2 = A->FindVirtualMethod("j2", void_sig);
954  ASSERT_TRUE(Ii != NULL);
955  ASSERT_TRUE(Jj1 != NULL);
956  ASSERT_TRUE(Jj2 != NULL);
957  ASSERT_TRUE(Kj1 != NULL);
958  ASSERT_TRUE(Kj2 != NULL);
959  ASSERT_TRUE(Kk != NULL);
960  ASSERT_TRUE(Ai != NULL);
961  ASSERT_TRUE(Aj1 != NULL);
962  ASSERT_TRUE(Aj2 != NULL);
963  EXPECT_NE(Ii, Ai);
964  EXPECT_NE(Jj1, Aj1);
965  EXPECT_NE(Jj2, Aj2);
966  EXPECT_EQ(Kj1, Jj1);
967  EXPECT_EQ(Kj2, Jj2);
968  EXPECT_EQ(Ai, A->FindVirtualMethodForInterface(Ii));
969  EXPECT_EQ(Aj1, A->FindVirtualMethodForInterface(Jj1));
970  EXPECT_EQ(Aj2, A->FindVirtualMethodForInterface(Jj2));
971  EXPECT_EQ(Ai, A->FindVirtualMethodForVirtualOrInterface(Ii));
972  EXPECT_EQ(Aj1, A->FindVirtualMethodForVirtualOrInterface(Jj1));
973  EXPECT_EQ(Aj2, A->FindVirtualMethodForVirtualOrInterface(Jj2));
974
975  mirror::ArtField* Afoo = mirror::Class::FindStaticField(soa.Self(), A, "foo",
976                                                          "Ljava/lang/String;");
977  mirror::ArtField* Bfoo = mirror::Class::FindStaticField(soa.Self(), B, "foo",
978                                                          "Ljava/lang/String;");
979  mirror::ArtField* Jfoo = mirror::Class::FindStaticField(soa.Self(), J, "foo",
980                                                          "Ljava/lang/String;");
981  mirror::ArtField* Kfoo = mirror::Class::FindStaticField(soa.Self(), K, "foo",
982                                                          "Ljava/lang/String;");
983  ASSERT_TRUE(Afoo != NULL);
984  EXPECT_EQ(Afoo, Bfoo);
985  EXPECT_EQ(Afoo, Jfoo);
986  EXPECT_EQ(Afoo, Kfoo);
987}
988
989TEST_F(ClassLinkerTest, ResolveVerifyAndClinit) {
990  // pretend we are trying to get the static storage for the StaticsFromCode class.
991
992  // case 1, get the uninitialized storage from StaticsFromCode.<clinit>
993  // case 2, get the initialized storage from StaticsFromCode.getS0
994
995  ScopedObjectAccess soa(Thread::Current());
996  jobject jclass_loader = LoadDex("StaticsFromCode");
997  StackHandleScope<1> hs(soa.Self());
998  Handle<mirror::ClassLoader> class_loader(
999      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
1000  const DexFile* dex_file = Runtime::Current()->GetCompileTimeClassPath(jclass_loader)[0];
1001  CHECK(dex_file != NULL);
1002  mirror::Class* klass = class_linker_->FindClass(soa.Self(), "LStaticsFromCode;", class_loader);
1003  mirror::ArtMethod* clinit = klass->FindClassInitializer();
1004  mirror::ArtMethod* getS0 = klass->FindDirectMethod("getS0", "()Ljava/lang/Object;");
1005  const DexFile::StringId* string_id = dex_file->FindStringId("LStaticsFromCode;");
1006  ASSERT_TRUE(string_id != NULL);
1007  const DexFile::TypeId* type_id = dex_file->FindTypeId(dex_file->GetIndexForStringId(*string_id));
1008  ASSERT_TRUE(type_id != NULL);
1009  uint32_t type_idx = dex_file->GetIndexForTypeId(*type_id);
1010  mirror::Class* uninit = ResolveVerifyAndClinit(type_idx, clinit, Thread::Current(), true, false);
1011  EXPECT_TRUE(uninit != NULL);
1012  EXPECT_FALSE(uninit->IsInitialized());
1013  mirror::Class* init = ResolveVerifyAndClinit(type_idx, getS0, Thread::Current(), true, false);
1014  EXPECT_TRUE(init != NULL);
1015  EXPECT_TRUE(init->IsInitialized());
1016}
1017
1018TEST_F(ClassLinkerTest, FinalizableBit) {
1019  ScopedObjectAccess soa(Thread::Current());
1020  mirror::Class* c;
1021
1022  // Object has a finalize method, but we know it's empty.
1023  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1024  EXPECT_FALSE(c->IsFinalizable());
1025
1026  // Enum has a finalize method to prevent its subclasses from implementing one.
1027  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Enum;");
1028  EXPECT_FALSE(c->IsFinalizable());
1029
1030  // RoundingMode is an enum.
1031  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/math/RoundingMode;");
1032  EXPECT_FALSE(c->IsFinalizable());
1033
1034  // RandomAccessFile extends Object and overrides finalize.
1035  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/RandomAccessFile;");
1036  EXPECT_TRUE(c->IsFinalizable());
1037
1038  // FileInputStream is finalizable and extends InputStream which isn't.
1039  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/InputStream;");
1040  EXPECT_FALSE(c->IsFinalizable());
1041  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/FileInputStream;");
1042  EXPECT_TRUE(c->IsFinalizable());
1043
1044  // ScheduledThreadPoolExecutor doesn't have a finalize method but
1045  // extends ThreadPoolExecutor which does.
1046  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ThreadPoolExecutor;");
1047  EXPECT_TRUE(c->IsFinalizable());
1048  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ScheduledThreadPoolExecutor;");
1049  EXPECT_TRUE(c->IsFinalizable());
1050}
1051
1052TEST_F(ClassLinkerTest, ClassRootDescriptors) {
1053  ScopedObjectAccess soa(Thread::Current());
1054  for (int i = 0; i < ClassLinker::kClassRootsMax; i++) {
1055    mirror::Class* klass = class_linker_->GetClassRoot(ClassLinker::ClassRoot(i));
1056    EXPECT_TRUE(!klass->GetDescriptor().empty());
1057    EXPECT_STREQ(klass->GetDescriptor().c_str(),
1058                 class_linker_->GetClassRootDescriptor(ClassLinker::ClassRoot(i))) << " i = " << i;
1059  }
1060}
1061
1062TEST_F(ClassLinkerTest, ValidatePredefinedClassSizes) {
1063  ScopedObjectAccess soa(Thread::Current());
1064  NullHandle<mirror::ClassLoader> class_loader;
1065  mirror::Class* c;
1066
1067  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Class;", class_loader);
1068  EXPECT_EQ(c->GetClassSize(), mirror::Class::ClassClassSize());
1069
1070  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Object;", class_loader);
1071  EXPECT_EQ(c->GetClassSize(), mirror::Object::ClassSize());
1072
1073  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/String;", class_loader);
1074  EXPECT_EQ(c->GetClassSize(), mirror::String::ClassSize());
1075
1076  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/DexCache;", class_loader);
1077  EXPECT_EQ(c->GetClassSize(), mirror::DexCache::ClassSize());
1078
1079  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/reflect/ArtField;", class_loader);
1080  EXPECT_EQ(c->GetClassSize(), mirror::ArtField::ClassSize());
1081
1082  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/reflect/ArtMethod;", class_loader);
1083  EXPECT_EQ(c->GetClassSize(), mirror::ArtMethod::ClassSize());
1084}
1085
1086}  // namespace art
1087