class_linker_test.cc revision df1532b9ba0cda2d00b78fbdef461f8a6cf8a737 
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    std::string temp;
72    ASSERT_STREQ(descriptor.c_str(), primitive->GetDescriptor(&temp));
73    EXPECT_TRUE(primitive->GetSuperClass() == NULL);
74    EXPECT_FALSE(primitive->HasSuperClass());
75    EXPECT_TRUE(primitive->GetClassLoader() == NULL);
76    EXPECT_EQ(mirror::Class::kStatusInitialized, primitive->GetStatus());
77    EXPECT_FALSE(primitive->IsErroneous());
78    EXPECT_TRUE(primitive->IsLoaded());
79    EXPECT_TRUE(primitive->IsResolved());
80    EXPECT_TRUE(primitive->IsVerified());
81    EXPECT_TRUE(primitive->IsInitialized());
82    EXPECT_FALSE(primitive->IsArrayInstance());
83    EXPECT_FALSE(primitive->IsArrayClass());
84    EXPECT_TRUE(primitive->GetComponentType() == NULL);
85    EXPECT_FALSE(primitive->IsInterface());
86    EXPECT_TRUE(primitive->IsPublic());
87    EXPECT_TRUE(primitive->IsFinal());
88    EXPECT_TRUE(primitive->IsPrimitive());
89    EXPECT_FALSE(primitive->IsSynthetic());
90    EXPECT_EQ(0U, primitive->NumDirectMethods());
91    EXPECT_EQ(0U, primitive->NumVirtualMethods());
92    EXPECT_EQ(0U, primitive->NumInstanceFields());
93    EXPECT_EQ(0U, primitive->NumStaticFields());
94    EXPECT_EQ(0U, primitive->NumDirectInterfaces());
95    EXPECT_FALSE(primitive->HasVTable());
96    EXPECT_EQ(0, primitive->GetIfTableCount());
97    EXPECT_TRUE(primitive->GetIfTable() == NULL);
98    EXPECT_EQ(kAccPublic | kAccFinal | kAccAbstract, primitive->GetAccessFlags());
99  }
100
101  void AssertArrayClass(const std::string& array_descriptor,
102                        const std::string& component_type,
103                        mirror::ClassLoader* class_loader)
104      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
105    Thread* self = Thread::Current();
106    StackHandleScope<2> hs(self);
107    Handle<mirror::ClassLoader> loader(hs.NewHandle(class_loader));
108    Handle<mirror::Class> array(
109        hs.NewHandle(class_linker_->FindClass(self, array_descriptor.c_str(), loader)));
110    std::string temp;
111    EXPECT_STREQ(component_type.c_str(), array->GetComponentType()->GetDescriptor(&temp));
112    EXPECT_EQ(class_loader, array->GetClassLoader());
113    EXPECT_EQ(kAccFinal | kAccAbstract, (array->GetAccessFlags() & (kAccFinal | kAccAbstract)));
114    AssertArrayClass(array_descriptor, array);
115  }
116
117  void AssertArrayClass(const std::string& array_descriptor, Handle<mirror::Class> array)
118      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
119    ASSERT_TRUE(array.Get() != NULL);
120    ASSERT_TRUE(array->GetClass() != NULL);
121    ASSERT_EQ(array->GetClass(), array->GetClass()->GetClass());
122    EXPECT_TRUE(array->GetClass()->GetSuperClass() != NULL);
123    std::string temp;
124    ASSERT_STREQ(array_descriptor.c_str(), array->GetDescriptor(&temp));
125    EXPECT_TRUE(array->GetSuperClass() != NULL);
126    Thread* self = Thread::Current();
127    EXPECT_EQ(class_linker_->FindSystemClass(self, "Ljava/lang/Object;"), array->GetSuperClass());
128    EXPECT_TRUE(array->HasSuperClass());
129    ASSERT_TRUE(array->GetComponentType() != NULL);
130    ASSERT_GT(strlen(array->GetComponentType()->GetDescriptor(&temp)), 0U);
131    EXPECT_EQ(mirror::Class::kStatusInitialized, array->GetStatus());
132    EXPECT_FALSE(array->IsErroneous());
133    EXPECT_TRUE(array->IsLoaded());
134    EXPECT_TRUE(array->IsResolved());
135    EXPECT_TRUE(array->IsVerified());
136    EXPECT_TRUE(array->IsInitialized());
137    EXPECT_FALSE(array->IsArrayInstance());
138    EXPECT_TRUE(array->IsArrayClass());
139    EXPECT_FALSE(array->IsInterface());
140    EXPECT_EQ(array->GetComponentType()->IsPublic(), array->IsPublic());
141    EXPECT_TRUE(array->IsFinal());
142    EXPECT_FALSE(array->IsPrimitive());
143    EXPECT_FALSE(array->IsSynthetic());
144    EXPECT_EQ(0U, array->NumDirectMethods());
145    EXPECT_EQ(0U, array->NumVirtualMethods());
146    EXPECT_EQ(0U, array->NumInstanceFields());
147    EXPECT_EQ(0U, array->NumStaticFields());
148    EXPECT_EQ(2U, array->NumDirectInterfaces());
149    EXPECT_TRUE(array->ShouldHaveEmbeddedImtAndVTable());
150    EXPECT_EQ(2, array->GetIfTableCount());
151    ASSERT_TRUE(array->GetIfTable() != NULL);
152    mirror::Class* direct_interface0 = mirror::Class::GetDirectInterface(self, array, 0);
153    EXPECT_TRUE(direct_interface0 != nullptr);
154    EXPECT_STREQ(direct_interface0->GetDescriptor(&temp), "Ljava/lang/Cloneable;");
155    mirror::Class* direct_interface1 = mirror::Class::GetDirectInterface(self, array, 1);
156    EXPECT_STREQ(direct_interface1->GetDescriptor(&temp), "Ljava/io/Serializable;");
157    mirror::Class* array_ptr = array->GetComponentType();
158    EXPECT_EQ(class_linker_->FindArrayClass(self, &array_ptr), array.Get());
159  }
160
161  void AssertMethod(mirror::ArtMethod* method) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
162    EXPECT_TRUE(method != nullptr);
163    EXPECT_TRUE(method->GetClass() != nullptr);
164    EXPECT_TRUE(method->GetName() != nullptr);
165    EXPECT_TRUE(method->GetSignature() != Signature::NoSignature());
166
167    EXPECT_TRUE(method->GetDexCacheStrings() != nullptr);
168    EXPECT_TRUE(method->HasDexCacheResolvedMethods());
169    EXPECT_TRUE(method->HasDexCacheResolvedTypes());
170    EXPECT_EQ(method->GetDeclaringClass()->GetDexCache()->GetStrings(),
171              method->GetDexCacheStrings());
172    EXPECT_TRUE(method->HasSameDexCacheResolvedMethods(
173        method->GetDeclaringClass()->GetDexCache()->GetResolvedMethods()));
174    EXPECT_TRUE(method->HasSameDexCacheResolvedTypes(
175        method->GetDeclaringClass()->GetDexCache()->GetResolvedTypes()));
176  }
177
178  void AssertField(mirror::Class* klass, mirror::ArtField* field)
179      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
180    EXPECT_TRUE(field != NULL);
181    EXPECT_TRUE(field->GetClass() != NULL);
182    EXPECT_EQ(klass, field->GetDeclaringClass());
183    EXPECT_TRUE(field->GetName() != NULL);
184    StackHandleScope<1> hs(Thread::Current());
185    FieldHelper fh(hs.NewHandle(field));
186    EXPECT_TRUE(fh.GetType() != NULL);
187  }
188
189  void AssertClass(const std::string& descriptor, Handle<mirror::Class> klass)
190      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
191    std::string temp;
192    EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor(&temp));
193    if (descriptor == "Ljava/lang/Object;") {
194      EXPECT_FALSE(klass->HasSuperClass());
195    } else {
196      EXPECT_TRUE(klass->HasSuperClass());
197      EXPECT_TRUE(klass->GetSuperClass() != NULL);
198    }
199    EXPECT_TRUE(klass->GetClass() != NULL);
200    EXPECT_EQ(klass->GetClass(), klass->GetClass()->GetClass());
201    EXPECT_TRUE(klass->GetDexCache() != NULL);
202    EXPECT_TRUE(klass->IsLoaded());
203    EXPECT_TRUE(klass->IsResolved());
204    EXPECT_FALSE(klass->IsErroneous());
205    EXPECT_FALSE(klass->IsArrayClass());
206    EXPECT_TRUE(klass->GetComponentType() == NULL);
207    EXPECT_TRUE(klass->IsInSamePackage(klass.Get()));
208    std::string temp2;
209    EXPECT_TRUE(mirror::Class::IsInSamePackage(klass->GetDescriptor(&temp),
210                                               klass->GetDescriptor(&temp2)));
211    if (klass->IsInterface()) {
212      EXPECT_TRUE(klass->IsAbstract());
213      if (klass->NumDirectMethods() == 1) {
214        EXPECT_TRUE(klass->GetDirectMethod(0)->IsClassInitializer());
215        EXPECT_TRUE(klass->GetDirectMethod(0)->IsDirect());
216      } else {
217        EXPECT_EQ(0U, klass->NumDirectMethods());
218      }
219    } else {
220      if (!klass->IsSynthetic()) {
221        EXPECT_NE(0U, klass->NumDirectMethods());
222      }
223    }
224    EXPECT_EQ(klass->IsInterface(), !klass->HasVTable());
225    mirror::IfTable* iftable = klass->GetIfTable();
226    for (int i = 0; i < klass->GetIfTableCount(); i++) {
227      mirror::Class* interface = iftable->GetInterface(i);
228      ASSERT_TRUE(interface != NULL);
229      if (klass->IsInterface()) {
230        EXPECT_EQ(0U, iftable->GetMethodArrayCount(i));
231      } else {
232        EXPECT_EQ(interface->NumVirtualMethods(), iftable->GetMethodArrayCount(i));
233      }
234    }
235    if (klass->IsAbstract()) {
236      EXPECT_FALSE(klass->IsFinal());
237    } else {
238      EXPECT_FALSE(klass->IsAnnotation());
239    }
240    if (klass->IsFinal()) {
241      EXPECT_FALSE(klass->IsAbstract());
242      EXPECT_FALSE(klass->IsAnnotation());
243    }
244    if (klass->IsAnnotation()) {
245      EXPECT_FALSE(klass->IsFinal());
246      EXPECT_TRUE(klass->IsAbstract());
247    }
248
249    EXPECT_FALSE(klass->IsPrimitive());
250    EXPECT_TRUE(klass->CanAccess(klass.Get()));
251
252    for (size_t i = 0; i < klass->NumDirectMethods(); i++) {
253      mirror::ArtMethod* method = klass->GetDirectMethod(i);
254      AssertMethod(method);
255      EXPECT_TRUE(method->IsDirect());
256      EXPECT_EQ(klass.Get(), method->GetDeclaringClass());
257    }
258
259    for (size_t i = 0; i < klass->NumVirtualMethods(); i++) {
260      mirror::ArtMethod* method = klass->GetVirtualMethod(i);
261      AssertMethod(method);
262      EXPECT_FALSE(method->IsDirect());
263      EXPECT_TRUE(method->GetDeclaringClass()->IsAssignableFrom(klass.Get()));
264    }
265
266    for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
267      mirror::ArtField* field = klass->GetInstanceField(i);
268      AssertField(klass.Get(), field);
269      EXPECT_FALSE(field->IsStatic());
270    }
271
272    for (size_t i = 0; i < klass->NumStaticFields(); i++) {
273      mirror::ArtField* field = klass->GetStaticField(i);
274      AssertField(klass.Get(), field);
275      EXPECT_TRUE(field->IsStatic());
276    }
277
278    // Confirm that all instances fields are packed together at the start
279    EXPECT_GE(klass->NumInstanceFields(), klass->NumReferenceInstanceFields());
280    StackHandleScope<1> hs(Thread::Current());
281    FieldHelper fh(hs.NewHandle<mirror::ArtField>(nullptr));
282    for (size_t i = 0; i < klass->NumReferenceInstanceFields(); i++) {
283      mirror::ArtField* field = klass->GetInstanceField(i);
284      fh.ChangeField(field);
285      ASSERT_TRUE(!field->IsPrimitiveType());
286      mirror::Class* field_type = fh.GetType();
287      ASSERT_TRUE(field_type != NULL);
288      ASSERT_TRUE(!field_type->IsPrimitive());
289    }
290    for (size_t i = klass->NumReferenceInstanceFields(); i < klass->NumInstanceFields(); i++) {
291      mirror::ArtField* field = klass->GetInstanceField(i);
292      fh.ChangeField(field);
293      mirror::Class* field_type = fh.GetType();
294      ASSERT_TRUE(field_type != NULL);
295      if (!fh.GetField()->IsPrimitiveType() || !field_type->IsPrimitive()) {
296        // While Reference.referent is not primitive, the ClassLinker
297        // treats it as such so that the garbage collector won't scan it.
298        EXPECT_EQ(PrettyField(fh.GetField()), "java.lang.Object java.lang.ref.Reference.referent");
299      }
300    }
301
302    size_t total_num_reference_instance_fields = 0;
303    mirror::Class* k = klass.Get();
304    while (k != NULL) {
305      total_num_reference_instance_fields += k->NumReferenceInstanceFields();
306      k = k->GetSuperClass();
307    }
308    EXPECT_EQ(klass->GetReferenceInstanceOffsets() == 0, total_num_reference_instance_fields == 0);
309  }
310
311  void AssertDexFileClass(mirror::ClassLoader* class_loader, const std::string& descriptor)
312      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
313    ASSERT_TRUE(descriptor != NULL);
314    Thread* self = Thread::Current();
315    StackHandleScope<1> hs(self);
316    Handle<mirror::Class> klass(
317        hs.NewHandle(class_linker_->FindSystemClass(self, descriptor.c_str())));
318    ASSERT_TRUE(klass.Get() != nullptr);
319    std::string temp;
320    EXPECT_STREQ(descriptor.c_str(), klass.Get()->GetDescriptor(&temp));
321    EXPECT_EQ(class_loader, klass->GetClassLoader());
322    if (klass->IsPrimitive()) {
323      AssertPrimitiveClass(descriptor, klass.Get());
324    } else if (klass->IsArrayClass()) {
325      AssertArrayClass(descriptor, klass);
326    } else {
327      AssertClass(descriptor, klass);
328    }
329  }
330
331  void AssertDexFile(const DexFile* dex, mirror::ClassLoader* class_loader)
332      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
333    ASSERT_TRUE(dex != NULL);
334
335    // Verify all the classes defined in this file
336    for (size_t i = 0; i < dex->NumClassDefs(); i++) {
337      const DexFile::ClassDef& class_def = dex->GetClassDef(i);
338      const char* descriptor = dex->GetClassDescriptor(class_def);
339      AssertDexFileClass(class_loader, descriptor);
340    }
341    // Verify all the types referenced by this file
342    for (size_t i = 0; i < dex->NumTypeIds(); i++) {
343      const DexFile::TypeId& type_id = dex->GetTypeId(i);
344      const char* descriptor = dex->GetTypeDescriptor(type_id);
345      AssertDexFileClass(class_loader, descriptor);
346    }
347    class_linker_->VisitRoots(TestRootVisitor, NULL, kVisitRootFlagAllRoots);
348    // Verify the dex cache has resolution methods in all resolved method slots
349    mirror::DexCache* dex_cache = class_linker_->FindDexCache(*dex);
350    mirror::ObjectArray<mirror::ArtMethod>* resolved_methods = dex_cache->GetResolvedMethods();
351    for (size_t i = 0; i < static_cast<size_t>(resolved_methods->GetLength()); i++) {
352      EXPECT_TRUE(resolved_methods->Get(i) != NULL) << dex->GetLocation() << " i=" << i;
353    }
354  }
355
356  static void TestRootVisitor(mirror::Object** root, void*, uint32_t, RootType) {
357    EXPECT_TRUE(*root != NULL);
358  }
359};
360
361struct CheckOffset {
362  size_t cpp_offset;
363  const char* java_name;
364  CheckOffset(size_t c, const char* j) : cpp_offset(c), java_name(j) {}
365};
366
367template <typename T>
368struct CheckOffsets {
369  CheckOffsets(bool is_static, const char* class_descriptor)
370      : is_static(is_static), class_descriptor(class_descriptor) {}
371  bool is_static;
372  std::string class_descriptor;
373  std::vector<CheckOffset> offsets;
374
375  bool Check() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
376    Thread* self = Thread::Current();
377    mirror::Class* klass =
378        Runtime::Current()->GetClassLinker()->FindSystemClass(self, class_descriptor.c_str());
379    CHECK(klass != NULL) << class_descriptor;
380
381    bool error = false;
382
383    if (!klass->IsClassClass() && !is_static) {
384      size_t expected_size = is_static ? klass->GetClassSize(): klass->GetObjectSize();
385      if (sizeof(T) != expected_size) {
386        LOG(ERROR) << "Class size mismatch:"
387           << " class=" << class_descriptor
388           << " Java=" << expected_size
389           << " C++=" << sizeof(T);
390        error = true;
391      }
392    }
393
394    size_t num_fields = is_static ? klass->NumStaticFields() : klass->NumInstanceFields();
395    if (offsets.size() != num_fields) {
396      LOG(ERROR) << "Field count mismatch:"
397         << " class=" << class_descriptor
398         << " Java=" << num_fields
399         << " C++=" << offsets.size();
400      error = true;
401    }
402
403    for (size_t i = 0; i < offsets.size(); 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        error = true;
408      }
409    }
410    if (error) {
411      for (size_t i = 0; i < offsets.size(); i++) {
412        CheckOffset& offset = offsets[i];
413        mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
414        StringPiece field_name(field->GetName());
415        if (field_name != offsets[i].java_name) {
416          LOG(ERROR) << "JAVA FIELD ORDER MISMATCH NEXT LINE:";
417        }
418        LOG(ERROR) << "Java field order:"
419           << " i=" << i << " class=" << class_descriptor
420           << " Java=" << field_name
421           << " CheckOffsets=" << offset.java_name;
422      }
423    }
424
425    for (size_t i = 0; i < offsets.size(); i++) {
426      CheckOffset& offset = offsets[i];
427      mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
428      if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
429        error = true;
430      }
431    }
432    if (error) {
433      for (size_t i = 0; i < offsets.size(); i++) {
434        CheckOffset& offset = offsets[i];
435        mirror::ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
436        if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
437          LOG(ERROR) << "OFFSET MISMATCH NEXT LINE:";
438        }
439        LOG(ERROR) << "Offset: class=" << class_descriptor << " field=" << offset.java_name
440           << " Java=" << field->GetOffset().Uint32Value() << " C++=" << offset.cpp_offset;
441      }
442    }
443
444    return !error;
445  };
446
447 private:
448  DISALLOW_IMPLICIT_CONSTRUCTORS(CheckOffsets);
449};
450
451// Note that ClassLinkerTest.ValidateFieldOrderOfJavaCppUnionClasses
452// is first since if it is failing, others are unlikely to succeed.
453
454struct ObjectOffsets : public CheckOffsets<mirror::Object> {
455  ObjectOffsets() : CheckOffsets<mirror::Object>(false, "Ljava/lang/Object;") {
456    // alphabetical references
457    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, klass_),   "shadow$_klass_"));
458
459    // alphabetical 32-bit
460    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, monitor_), "shadow$_monitor_"));
461#ifdef USE_BAKER_OR_BROOKS_READ_BARRIER
462    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, x_rb_ptr_), "shadow$_x_rb_ptr_"));
463    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Object, x_xpadding_), "shadow$_x_xpadding_"));
464#endif
465  };
466};
467
468struct ArtFieldOffsets : public CheckOffsets<mirror::ArtField> {
469  ArtFieldOffsets() : CheckOffsets<mirror::ArtField>(false, "Ljava/lang/reflect/ArtField;") {
470    // alphabetical references
471    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, declaring_class_), "declaringClass"));
472
473    // alphabetical 32-bit
474    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, access_flags_),    "accessFlags"));
475    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, field_dex_idx_),   "fieldDexIndex"));
476    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtField, offset_),          "offset"));
477  };
478};
479
480struct ArtMethodOffsets : public CheckOffsets<mirror::ArtMethod> {
481  ArtMethodOffsets() : CheckOffsets<mirror::ArtMethod>(false, "Ljava/lang/reflect/ArtMethod;") {
482    // alphabetical references
483    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, declaring_class_),                      "declaringClass"));
484    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_resolved_methods_),           "dexCacheResolvedMethods"));
485    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_resolved_types_),             "dexCacheResolvedTypes"));
486    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_cache_strings_),                    "dexCacheStrings"));
487
488    // alphabetical 64-bit
489    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_interpreter_),            "entryPointFromInterpreter"));
490    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_jni_),                    "entryPointFromJni"));
491    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_portable_compiled_code_), "entryPointFromPortableCompiledCode"));
492    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, entry_point_from_quick_compiled_code_),    "entryPointFromQuickCompiledCode"));
493    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, gc_map_),                                  "gcMap"));
494
495    // alphabetical 32-bit
496    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, access_flags_),                   "accessFlags"));
497    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_code_item_offset_),           "dexCodeItemOffset"));
498    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_method_index_),               "dexMethodIndex"));
499    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, method_index_),                   "methodIndex"));
500  };
501};
502
503struct ClassOffsets : public CheckOffsets<mirror::Class> {
504  ClassOffsets() : CheckOffsets<mirror::Class>(false, "Ljava/lang/Class;") {
505    // alphabetical references
506    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, class_loader_),                  "classLoader"));
507    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, component_type_),                "componentType"));
508    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_cache_),                     "dexCache"));
509    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, direct_methods_),                "directMethods"));
510    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, ifields_),                       "iFields"));
511    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, iftable_),                       "ifTable"));
512    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, imtable_),                       "imTable"));
513    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, name_),                          "name"));
514    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, sfields_),                       "sFields"));
515    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, super_class_),                   "superClass"));
516    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, verify_error_class_),            "verifyErrorClass"));
517    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, virtual_methods_),               "virtualMethods"));
518    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, vtable_),                        "vtable"));
519
520    // alphabetical 32-bit
521    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, access_flags_),                  "accessFlags"));
522    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, class_size_),                    "classSize"));
523    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, clinit_thread_id_),              "clinitThreadId"));
524    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_class_def_idx_),             "dexClassDefIndex"));
525    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, dex_type_idx_),                  "dexTypeIndex"));
526    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_instance_fields_), "numReferenceInstanceFields"));
527    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_static_fields_),   "numReferenceStaticFields"));
528    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, object_size_),                   "objectSize"));
529    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, primitive_type_),                "primitiveType"));
530    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, reference_instance_offsets_),    "referenceInstanceOffsets"));
531    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, reference_static_offsets_),      "referenceStaticOffsets"));
532    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Class, status_),                        "status"));
533  };
534};
535
536struct StringOffsets : public CheckOffsets<mirror::String> {
537  StringOffsets() : CheckOffsets<mirror::String>(false, "Ljava/lang/String;") {
538    // alphabetical references
539    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, array_),     "value"));
540
541    // alphabetical 32-bit
542    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, count_),     "count"));
543    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, hash_code_), "hashCode"));
544    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::String, offset_),    "offset"));
545  };
546};
547
548struct ThrowableOffsets : public CheckOffsets<mirror::Throwable> {
549  ThrowableOffsets() : CheckOffsets<mirror::Throwable>(false, "Ljava/lang/Throwable;") {
550    // alphabetical references
551    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, cause_),                 "cause"));
552    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, detail_message_),        "detailMessage"));
553    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_state_),           "stackState"));
554    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_trace_),           "stackTrace"));
555    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Throwable, suppressed_exceptions_), "suppressedExceptions"));
556  };
557};
558
559struct StackTraceElementOffsets : public CheckOffsets<mirror::StackTraceElement> {
560  StackTraceElementOffsets() : CheckOffsets<mirror::StackTraceElement>(false, "Ljava/lang/StackTraceElement;") {
561    // alphabetical references
562    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, declaring_class_), "declaringClass"));
563    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, file_name_),       "fileName"));
564    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, method_name_),     "methodName"));
565    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, line_number_),     "lineNumber"));
566  };
567};
568
569struct ClassLoaderOffsets : public CheckOffsets<mirror::ClassLoader> {
570  ClassLoaderOffsets() : CheckOffsets<mirror::ClassLoader>(false, "Ljava/lang/ClassLoader;") {
571    // alphabetical references
572    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, packages_),   "packages"));
573    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, parent_),     "parent"));
574    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ClassLoader, proxyCache_), "proxyCache"));
575  };
576};
577
578struct ProxyOffsets : public CheckOffsets<mirror::Proxy> {
579  ProxyOffsets() : CheckOffsets<mirror::Proxy>(false, "Ljava/lang/reflect/Proxy;") {
580    // alphabetical references
581    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Proxy, h_), "h"));
582  };
583};
584
585struct DexCacheOffsets : public CheckOffsets<mirror::DexCache> {
586  DexCacheOffsets() : CheckOffsets<mirror::DexCache>(false, "Ljava/lang/DexCache;") {
587    // alphabetical references
588    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_),                        "dex"));
589    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, location_),                   "location"));
590    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_),            "resolvedFields"));
591    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_),           "resolvedMethods"));
592    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_),             "resolvedTypes"));
593    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_),                    "strings"));
594    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_file_),                   "dexFile"));
595  };
596};
597
598struct ReferenceOffsets : public CheckOffsets<mirror::Reference> {
599  ReferenceOffsets() : CheckOffsets<mirror::Reference>(false, "Ljava/lang/ref/Reference;") {
600    // alphabetical references
601    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, pending_next_),  "pendingNext"));
602    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, queue_),         "queue"));
603    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, queue_next_),    "queueNext"));
604    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::Reference, referent_),      "referent"));
605  };
606};
607
608struct FinalizerReferenceOffsets : public CheckOffsets<mirror::FinalizerReference> {
609  FinalizerReferenceOffsets() : CheckOffsets<mirror::FinalizerReference>(false, "Ljava/lang/ref/FinalizerReference;") {
610    // alphabetical references
611    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, next_),   "next"));
612    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, prev_),   "prev"));
613    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, zombie_), "zombie"));
614  };
615};
616
617// C++ fields must exactly match the fields in the Java classes. If this fails,
618// reorder the fields in the C++ class. Managed class fields are ordered by
619// ClassLinker::LinkFields.
620TEST_F(ClassLinkerTest, ValidateFieldOrderOfJavaCppUnionClasses) {
621  ScopedObjectAccess soa(Thread::Current());
622  EXPECT_TRUE(ObjectOffsets().Check());
623  EXPECT_TRUE(ArtFieldOffsets().Check());
624  EXPECT_TRUE(ArtMethodOffsets().Check());
625  EXPECT_TRUE(ClassOffsets().Check());
626  EXPECT_TRUE(StringOffsets().Check());
627  EXPECT_TRUE(ThrowableOffsets().Check());
628  EXPECT_TRUE(StackTraceElementOffsets().Check());
629  EXPECT_TRUE(ClassLoaderOffsets().Check());
630  EXPECT_TRUE(ProxyOffsets().Check());
631  EXPECT_TRUE(DexCacheOffsets().Check());
632  EXPECT_TRUE(ReferenceOffsets().Check());
633  EXPECT_TRUE(FinalizerReferenceOffsets().Check());
634}
635
636TEST_F(ClassLinkerTest, FindClassNonexistent) {
637  ScopedObjectAccess soa(Thread::Current());
638  AssertNonExistentClass("NoSuchClass;");
639  AssertNonExistentClass("LNoSuchClass;");
640}
641
642TEST_F(ClassLinkerTest, FindClassNested) {
643  ScopedObjectAccess soa(Thread::Current());
644  StackHandleScope<1> hs(soa.Self());
645  Handle<mirror::ClassLoader> class_loader(
646      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Nested"))));
647
648  mirror::Class* outer = class_linker_->FindClass(soa.Self(), "LNested;", class_loader);
649  ASSERT_TRUE(outer != NULL);
650  EXPECT_EQ(0U, outer->NumVirtualMethods());
651  EXPECT_EQ(1U, outer->NumDirectMethods());
652
653  mirror::Class* inner = class_linker_->FindClass(soa.Self(), "LNested$Inner;", class_loader);
654  ASSERT_TRUE(inner != NULL);
655  EXPECT_EQ(0U, inner->NumVirtualMethods());
656  EXPECT_EQ(1U, inner->NumDirectMethods());
657}
658
659TEST_F(ClassLinkerTest, FindClass_Primitives) {
660  ScopedObjectAccess soa(Thread::Current());
661  const std::string expected("BCDFIJSZV");
662  for (int ch = 1; ch < 256; ++ch) {
663    std::string descriptor;
664    descriptor.push_back(ch);
665    if (expected.find(ch) == std::string::npos) {
666      AssertNonExistentClass(descriptor);
667    } else {
668      AssertPrimitiveClass(descriptor);
669    }
670  }
671}
672
673TEST_F(ClassLinkerTest, FindClass) {
674  ScopedObjectAccess soa(Thread::Current());
675  mirror::Class* JavaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
676  ASSERT_TRUE(JavaLangObject != NULL);
677  ASSERT_TRUE(JavaLangObject->GetClass() != NULL);
678  ASSERT_EQ(JavaLangObject->GetClass(), JavaLangObject->GetClass()->GetClass());
679  EXPECT_EQ(JavaLangObject, JavaLangObject->GetClass()->GetSuperClass());
680  std::string temp;
681  ASSERT_STREQ(JavaLangObject->GetDescriptor(&temp), "Ljava/lang/Object;");
682  EXPECT_TRUE(JavaLangObject->GetSuperClass() == NULL);
683  EXPECT_FALSE(JavaLangObject->HasSuperClass());
684  EXPECT_TRUE(JavaLangObject->GetClassLoader() == NULL);
685  EXPECT_EQ(mirror::Class::kStatusInitialized, JavaLangObject->GetStatus());
686  EXPECT_FALSE(JavaLangObject->IsErroneous());
687  EXPECT_TRUE(JavaLangObject->IsLoaded());
688  EXPECT_TRUE(JavaLangObject->IsResolved());
689  EXPECT_TRUE(JavaLangObject->IsVerified());
690  EXPECT_TRUE(JavaLangObject->IsInitialized());
691  EXPECT_FALSE(JavaLangObject->IsArrayInstance());
692  EXPECT_FALSE(JavaLangObject->IsArrayClass());
693  EXPECT_TRUE(JavaLangObject->GetComponentType() == NULL);
694  EXPECT_FALSE(JavaLangObject->IsInterface());
695  EXPECT_TRUE(JavaLangObject->IsPublic());
696  EXPECT_FALSE(JavaLangObject->IsFinal());
697  EXPECT_FALSE(JavaLangObject->IsPrimitive());
698  EXPECT_FALSE(JavaLangObject->IsSynthetic());
699  EXPECT_EQ(2U, JavaLangObject->NumDirectMethods());
700  EXPECT_EQ(11U, JavaLangObject->NumVirtualMethods());
701  if (!kUseBakerOrBrooksReadBarrier) {
702    EXPECT_EQ(2U, JavaLangObject->NumInstanceFields());
703  } else {
704    EXPECT_EQ(4U, JavaLangObject->NumInstanceFields());
705  }
706  EXPECT_STREQ(JavaLangObject->GetInstanceField(0)->GetName(), "shadow$_klass_");
707  EXPECT_STREQ(JavaLangObject->GetInstanceField(1)->GetName(), "shadow$_monitor_");
708  if (kUseBakerOrBrooksReadBarrier) {
709    EXPECT_STREQ(JavaLangObject->GetInstanceField(2)->GetName(), "shadow$_x_rb_ptr_");
710    EXPECT_STREQ(JavaLangObject->GetInstanceField(3)->GetName(), "shadow$_x_xpadding_");
711  }
712
713  EXPECT_EQ(0U, JavaLangObject->NumStaticFields());
714  EXPECT_EQ(0U, JavaLangObject->NumDirectInterfaces());
715
716  StackHandleScope<1> hs(soa.Self());
717  Handle<mirror::ClassLoader> class_loader(
718      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
719  AssertNonExistentClass("LMyClass;");
720  mirror::Class* MyClass = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader);
721  ASSERT_TRUE(MyClass != NULL);
722  ASSERT_TRUE(MyClass->GetClass() != NULL);
723  ASSERT_EQ(MyClass->GetClass(), MyClass->GetClass()->GetClass());
724  EXPECT_EQ(JavaLangObject, MyClass->GetClass()->GetSuperClass());
725  ASSERT_STREQ(MyClass->GetDescriptor(&temp), "LMyClass;");
726  EXPECT_TRUE(MyClass->GetSuperClass() == JavaLangObject);
727  EXPECT_TRUE(MyClass->HasSuperClass());
728  EXPECT_EQ(class_loader.Get(), MyClass->GetClassLoader());
729  EXPECT_EQ(mirror::Class::kStatusResolved, MyClass->GetStatus());
730  EXPECT_FALSE(MyClass->IsErroneous());
731  EXPECT_TRUE(MyClass->IsLoaded());
732  EXPECT_TRUE(MyClass->IsResolved());
733  EXPECT_FALSE(MyClass->IsVerified());
734  EXPECT_FALSE(MyClass->IsInitialized());
735  EXPECT_FALSE(MyClass->IsArrayInstance());
736  EXPECT_FALSE(MyClass->IsArrayClass());
737  EXPECT_TRUE(MyClass->GetComponentType() == NULL);
738  EXPECT_FALSE(MyClass->IsInterface());
739  EXPECT_FALSE(MyClass->IsPublic());
740  EXPECT_FALSE(MyClass->IsFinal());
741  EXPECT_FALSE(MyClass->IsPrimitive());
742  EXPECT_FALSE(MyClass->IsSynthetic());
743  EXPECT_EQ(1U, MyClass->NumDirectMethods());
744  EXPECT_EQ(0U, MyClass->NumVirtualMethods());
745  EXPECT_EQ(0U, MyClass->NumInstanceFields());
746  EXPECT_EQ(0U, MyClass->NumStaticFields());
747  EXPECT_EQ(0U, MyClass->NumDirectInterfaces());
748
749  EXPECT_EQ(JavaLangObject->GetClass()->GetClass(), MyClass->GetClass()->GetClass());
750
751  // created by class_linker
752  AssertArrayClass("[C", "C", NULL);
753  AssertArrayClass("[Ljava/lang/Object;", "Ljava/lang/Object;", NULL);
754  // synthesized on the fly
755  AssertArrayClass("[[C", "[C", NULL);
756  AssertArrayClass("[[[LMyClass;", "[[LMyClass;", class_loader.Get());
757  // or not available at all
758  AssertNonExistentClass("[[[[LNonExistentClass;");
759}
760
761TEST_F(ClassLinkerTest, LibCore) {
762  ScopedObjectAccess soa(Thread::Current());
763  AssertDexFile(java_lang_dex_file_, NULL);
764}
765
766// The first reference array element must be a multiple of 4 bytes from the
767// start of the object
768TEST_F(ClassLinkerTest, ValidateObjectArrayElementsOffset) {
769  ScopedObjectAccess soa(Thread::Current());
770  mirror::Class* array_class = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
771  mirror::ObjectArray<mirror::String>* array =
772      mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), array_class, 0);
773  uintptr_t data_offset =
774      reinterpret_cast<uintptr_t>(array->GetRawData(sizeof(mirror::HeapReference<mirror::String>),
775                                                    0));
776  if (sizeof(mirror::HeapReference<mirror::String>) == sizeof(int32_t)) {
777    EXPECT_TRUE(IsAligned<4>(data_offset));  // Check 4 byte alignment.
778  } else {
779    EXPECT_TRUE(IsAligned<8>(data_offset));  // Check 8 byte alignment.
780  }
781}
782
783TEST_F(ClassLinkerTest, ValidatePrimitiveArrayElementsOffset) {
784  ScopedObjectAccess soa(Thread::Current());
785  StackHandleScope<5> hs(soa.Self());
786  Handle<mirror::LongArray> long_array(hs.NewHandle(mirror::LongArray::Alloc(soa.Self(), 0)));
787  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[J"), long_array->GetClass());
788  uintptr_t data_offset = reinterpret_cast<uintptr_t>(long_array->GetData());
789  EXPECT_TRUE(IsAligned<8>(data_offset));  // Longs require 8 byte alignment
790
791  Handle<mirror::DoubleArray> double_array(hs.NewHandle(mirror::DoubleArray::Alloc(soa.Self(), 0)));
792  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[D"), double_array->GetClass());
793  data_offset = reinterpret_cast<uintptr_t>(double_array->GetData());
794  EXPECT_TRUE(IsAligned<8>(data_offset));  // Doubles require 8 byte alignment
795
796  Handle<mirror::IntArray> int_array(hs.NewHandle(mirror::IntArray::Alloc(soa.Self(), 0)));
797  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[I"), int_array->GetClass());
798  data_offset = reinterpret_cast<uintptr_t>(int_array->GetData());
799  EXPECT_TRUE(IsAligned<4>(data_offset));  // Ints require 4 byte alignment
800
801  Handle<mirror::CharArray> char_array(hs.NewHandle(mirror::CharArray::Alloc(soa.Self(), 0)));
802  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[C"), char_array->GetClass());
803  data_offset = reinterpret_cast<uintptr_t>(char_array->GetData());
804  EXPECT_TRUE(IsAligned<2>(data_offset));  // Chars require 2 byte alignment
805
806  Handle<mirror::ShortArray> short_array(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 0)));
807  EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[S"), short_array->GetClass());
808  data_offset = reinterpret_cast<uintptr_t>(short_array->GetData());
809  EXPECT_TRUE(IsAligned<2>(data_offset));  // Shorts require 2 byte alignment
810
811  // Take it as given that bytes and booleans have byte alignment
812}
813
814TEST_F(ClassLinkerTest, ValidateBoxedTypes) {
815  // Validate that the "value" field is always the 0th field in each of java.lang's box classes.
816  // This lets UnboxPrimitive avoid searching for the field by name at runtime.
817  ScopedObjectAccess soa(Thread::Current());
818  NullHandle<mirror::ClassLoader> class_loader;
819  mirror::Class* c;
820  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Boolean;", class_loader);
821  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
822  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Byte;", class_loader);
823  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
824  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Character;", class_loader);
825  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
826  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Double;", class_loader);
827  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
828  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Float;", class_loader);
829  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
830  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Integer;", class_loader);
831  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
832  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Long;", class_loader);
833  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
834  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Short;", class_loader);
835  EXPECT_STREQ("value", c->GetIFields()->Get(0)->GetName());
836}
837
838TEST_F(ClassLinkerTest, TwoClassLoadersOneClass) {
839  ScopedObjectAccess soa(Thread::Current());
840  StackHandleScope<2> hs(soa.Self());
841  Handle<mirror::ClassLoader> class_loader_1(
842      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
843  Handle<mirror::ClassLoader> class_loader_2(
844      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
845  mirror::Class* MyClass_1 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_1);
846  mirror::Class* MyClass_2 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_2);
847  EXPECT_TRUE(MyClass_1 != nullptr);
848  EXPECT_TRUE(MyClass_2 != nullptr);
849  EXPECT_NE(MyClass_1, MyClass_2);
850}
851
852TEST_F(ClassLinkerTest, StaticFields) {
853  ScopedObjectAccess soa(Thread::Current());
854  StackHandleScope<2> hs(soa.Self());
855  Handle<mirror::ClassLoader> class_loader(
856      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Statics"))));
857  Handle<mirror::Class> statics(
858      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
859  class_linker_->EnsureInitialized(statics, true, true);
860
861  // Static final primitives that are initialized by a compile-time constant
862  // expression resolve to a copy of a constant value from the constant pool.
863  // So <clinit> should be null.
864  mirror::ArtMethod* clinit = statics->FindDirectMethod("<clinit>", "()V");
865  EXPECT_TRUE(clinit == NULL);
866
867  EXPECT_EQ(9U, statics->NumStaticFields());
868
869  mirror::ArtField* s0 = mirror::Class::FindStaticField(soa.Self(), statics, "s0", "Z");
870  std::string temp;
871  EXPECT_STREQ(s0->GetClass()->GetDescriptor(&temp), "Ljava/lang/reflect/ArtField;");
872  EXPECT_EQ(s0->GetTypeAsPrimitiveType(), Primitive::kPrimBoolean);
873  EXPECT_EQ(true, s0->GetBoolean(statics.Get()));
874  s0->SetBoolean<false>(statics.Get(), false);
875
876  mirror::ArtField* s1 = mirror::Class::FindStaticField(soa.Self(), statics, "s1", "B");
877  EXPECT_EQ(s1->GetTypeAsPrimitiveType(), Primitive::kPrimByte);
878  EXPECT_EQ(5, s1->GetByte(statics.Get()));
879  s1->SetByte<false>(statics.Get(), 6);
880
881  mirror::ArtField* s2 = mirror::Class::FindStaticField(soa.Self(), statics, "s2", "C");
882  EXPECT_EQ(s2->GetTypeAsPrimitiveType(), Primitive::kPrimChar);
883  EXPECT_EQ('a', s2->GetChar(statics.Get()));
884  s2->SetChar<false>(statics.Get(), 'b');
885
886  mirror::ArtField* s3 = mirror::Class::FindStaticField(soa.Self(), statics, "s3", "S");
887  EXPECT_EQ(s3->GetTypeAsPrimitiveType(), Primitive::kPrimShort);
888  EXPECT_EQ(-536, s3->GetShort(statics.Get()));
889  s3->SetShort<false>(statics.Get(), -535);
890
891  mirror::ArtField* s4 = mirror::Class::FindStaticField(soa.Self(), statics, "s4", "I");
892  EXPECT_EQ(s4->GetTypeAsPrimitiveType(), Primitive::kPrimInt);
893  EXPECT_EQ(2000000000, s4->GetInt(statics.Get()));
894  s4->SetInt<false>(statics.Get(), 2000000001);
895
896  mirror::ArtField* s5 = mirror::Class::FindStaticField(soa.Self(), statics, "s5", "J");
897  EXPECT_EQ(s5->GetTypeAsPrimitiveType(), Primitive::kPrimLong);
898  EXPECT_EQ(0x1234567890abcdefLL, s5->GetLong(statics.Get()));
899  s5->SetLong<false>(statics.Get(), INT64_C(0x34567890abcdef12));
900
901  mirror::ArtField* s6 = mirror::Class::FindStaticField(soa.Self(), statics, "s6", "F");
902  EXPECT_EQ(s6->GetTypeAsPrimitiveType(), Primitive::kPrimFloat);
903  EXPECT_EQ(0.5, s6->GetFloat(statics.Get()));
904  s6->SetFloat<false>(statics.Get(), 0.75);
905
906  mirror::ArtField* s7 = mirror::Class::FindStaticField(soa.Self(), statics, "s7", "D");
907  EXPECT_EQ(s7->GetTypeAsPrimitiveType(), Primitive::kPrimDouble);
908  EXPECT_EQ(16777217, s7->GetDouble(statics.Get()));
909  s7->SetDouble<false>(statics.Get(), 16777219);
910
911  mirror::ArtField* s8 = mirror::Class::FindStaticField(soa.Self(), statics, "s8",
912                                                        "Ljava/lang/String;");
913  EXPECT_EQ(s8->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
914  EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("android"));
915  s8->SetObject<false>(s8->GetDeclaringClass(),
916                       mirror::String::AllocFromModifiedUtf8(soa.Self(), "robot"));
917
918  // TODO: Remove EXPECT_FALSE when GCC can handle EXPECT_EQ
919  // http://code.google.com/p/googletest/issues/detail?id=322
920  EXPECT_FALSE(s0->GetBoolean(statics.Get()));
921  EXPECT_EQ(6, s1->GetByte(statics.Get()));
922  EXPECT_EQ('b', s2->GetChar(statics.Get()));
923  EXPECT_EQ(-535, s3->GetShort(statics.Get()));
924  EXPECT_EQ(2000000001, s4->GetInt(statics.Get()));
925  EXPECT_EQ(INT64_C(0x34567890abcdef12), s5->GetLong(statics.Get()));
926  EXPECT_EQ(0.75, s6->GetFloat(statics.Get()));
927  EXPECT_EQ(16777219, s7->GetDouble(statics.Get()));
928  EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("robot"));
929}
930
931TEST_F(ClassLinkerTest, Interfaces) {
932  ScopedObjectAccess soa(Thread::Current());
933  StackHandleScope<6> hs(soa.Self());
934  Handle<mirror::ClassLoader> class_loader(
935      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Interfaces"))));
936  Handle<mirror::Class> I(
937      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
938  Handle<mirror::Class> J(
939      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
940  Handle<mirror::Class> K(
941      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$K;", class_loader)));
942  Handle<mirror::Class> A(
943      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$A;", class_loader)));
944  Handle<mirror::Class> B(
945      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$B;", class_loader)));
946  EXPECT_TRUE(I->IsAssignableFrom(A.Get()));
947  EXPECT_TRUE(J->IsAssignableFrom(A.Get()));
948  EXPECT_TRUE(J->IsAssignableFrom(K.Get()));
949  EXPECT_TRUE(K->IsAssignableFrom(B.Get()));
950  EXPECT_TRUE(J->IsAssignableFrom(B.Get()));
951
952  const Signature void_sig = I->GetDexCache()->GetDexFile()->CreateSignature("()V");
953  mirror::ArtMethod* Ii = I->FindVirtualMethod("i", void_sig);
954  mirror::ArtMethod* Jj1 = J->FindVirtualMethod("j1", void_sig);
955  mirror::ArtMethod* Jj2 = J->FindVirtualMethod("j2", void_sig);
956  mirror::ArtMethod* Kj1 = K->FindInterfaceMethod("j1", void_sig);
957  mirror::ArtMethod* Kj2 = K->FindInterfaceMethod("j2", void_sig);
958  mirror::ArtMethod* Kk = K->FindInterfaceMethod("k", void_sig);
959  mirror::ArtMethod* Ai = A->FindVirtualMethod("i", void_sig);
960  mirror::ArtMethod* Aj1 = A->FindVirtualMethod("j1", void_sig);
961  mirror::ArtMethod* Aj2 = A->FindVirtualMethod("j2", void_sig);
962  ASSERT_TRUE(Ii != NULL);
963  ASSERT_TRUE(Jj1 != NULL);
964  ASSERT_TRUE(Jj2 != NULL);
965  ASSERT_TRUE(Kj1 != NULL);
966  ASSERT_TRUE(Kj2 != NULL);
967  ASSERT_TRUE(Kk != NULL);
968  ASSERT_TRUE(Ai != NULL);
969  ASSERT_TRUE(Aj1 != NULL);
970  ASSERT_TRUE(Aj2 != NULL);
971  EXPECT_NE(Ii, Ai);
972  EXPECT_NE(Jj1, Aj1);
973  EXPECT_NE(Jj2, Aj2);
974  EXPECT_EQ(Kj1, Jj1);
975  EXPECT_EQ(Kj2, Jj2);
976  EXPECT_EQ(Ai, A->FindVirtualMethodForInterface(Ii));
977  EXPECT_EQ(Aj1, A->FindVirtualMethodForInterface(Jj1));
978  EXPECT_EQ(Aj2, A->FindVirtualMethodForInterface(Jj2));
979  EXPECT_EQ(Ai, A->FindVirtualMethodForVirtualOrInterface(Ii));
980  EXPECT_EQ(Aj1, A->FindVirtualMethodForVirtualOrInterface(Jj1));
981  EXPECT_EQ(Aj2, A->FindVirtualMethodForVirtualOrInterface(Jj2));
982
983  mirror::ArtField* Afoo = mirror::Class::FindStaticField(soa.Self(), A, "foo",
984                                                          "Ljava/lang/String;");
985  mirror::ArtField* Bfoo = mirror::Class::FindStaticField(soa.Self(), B, "foo",
986                                                          "Ljava/lang/String;");
987  mirror::ArtField* Jfoo = mirror::Class::FindStaticField(soa.Self(), J, "foo",
988                                                          "Ljava/lang/String;");
989  mirror::ArtField* Kfoo = mirror::Class::FindStaticField(soa.Self(), K, "foo",
990                                                          "Ljava/lang/String;");
991  ASSERT_TRUE(Afoo != NULL);
992  EXPECT_EQ(Afoo, Bfoo);
993  EXPECT_EQ(Afoo, Jfoo);
994  EXPECT_EQ(Afoo, Kfoo);
995}
996
997TEST_F(ClassLinkerTest, ResolveVerifyAndClinit) {
998  // pretend we are trying to get the static storage for the StaticsFromCode class.
999
1000  // case 1, get the uninitialized storage from StaticsFromCode.<clinit>
1001  // case 2, get the initialized storage from StaticsFromCode.getS0
1002
1003  ScopedObjectAccess soa(Thread::Current());
1004  jobject jclass_loader = LoadDex("StaticsFromCode");
1005  StackHandleScope<1> hs(soa.Self());
1006  Handle<mirror::ClassLoader> class_loader(
1007      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
1008  const DexFile* dex_file = Runtime::Current()->GetCompileTimeClassPath(jclass_loader)[0];
1009  CHECK(dex_file != NULL);
1010  mirror::Class* klass = class_linker_->FindClass(soa.Self(), "LStaticsFromCode;", class_loader);
1011  mirror::ArtMethod* clinit = klass->FindClassInitializer();
1012  mirror::ArtMethod* getS0 = klass->FindDirectMethod("getS0", "()Ljava/lang/Object;");
1013  const DexFile::StringId* string_id = dex_file->FindStringId("LStaticsFromCode;");
1014  ASSERT_TRUE(string_id != NULL);
1015  const DexFile::TypeId* type_id = dex_file->FindTypeId(dex_file->GetIndexForStringId(*string_id));
1016  ASSERT_TRUE(type_id != NULL);
1017  uint32_t type_idx = dex_file->GetIndexForTypeId(*type_id);
1018  mirror::Class* uninit = ResolveVerifyAndClinit(type_idx, clinit, Thread::Current(), true, false);
1019  EXPECT_TRUE(uninit != NULL);
1020  EXPECT_FALSE(uninit->IsInitialized());
1021  mirror::Class* init = ResolveVerifyAndClinit(type_idx, getS0, Thread::Current(), true, false);
1022  EXPECT_TRUE(init != NULL);
1023  EXPECT_TRUE(init->IsInitialized());
1024}
1025
1026TEST_F(ClassLinkerTest, FinalizableBit) {
1027  ScopedObjectAccess soa(Thread::Current());
1028  mirror::Class* c;
1029
1030  // Object has a finalize method, but we know it's empty.
1031  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1032  EXPECT_FALSE(c->IsFinalizable());
1033
1034  // Enum has a finalize method to prevent its subclasses from implementing one.
1035  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Enum;");
1036  EXPECT_FALSE(c->IsFinalizable());
1037
1038  // RoundingMode is an enum.
1039  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/math/RoundingMode;");
1040  EXPECT_FALSE(c->IsFinalizable());
1041
1042  // RandomAccessFile extends Object and overrides finalize.
1043  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/RandomAccessFile;");
1044  EXPECT_TRUE(c->IsFinalizable());
1045
1046  // FileInputStream is finalizable and extends InputStream which isn't.
1047  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/InputStream;");
1048  EXPECT_FALSE(c->IsFinalizable());
1049  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/FileInputStream;");
1050  EXPECT_TRUE(c->IsFinalizable());
1051
1052  // ScheduledThreadPoolExecutor doesn't have a finalize method but
1053  // extends ThreadPoolExecutor which does.
1054  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ThreadPoolExecutor;");
1055  EXPECT_TRUE(c->IsFinalizable());
1056  c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ScheduledThreadPoolExecutor;");
1057  EXPECT_TRUE(c->IsFinalizable());
1058}
1059
1060TEST_F(ClassLinkerTest, ClassRootDescriptors) {
1061  ScopedObjectAccess soa(Thread::Current());
1062  std::string temp;
1063  for (int i = 0; i < ClassLinker::kClassRootsMax; i++) {
1064    mirror::Class* klass = class_linker_->GetClassRoot(ClassLinker::ClassRoot(i));
1065    EXPECT_GT(strlen(klass->GetDescriptor(&temp)), 0U);
1066    EXPECT_STREQ(klass->GetDescriptor(&temp),
1067                 class_linker_->GetClassRootDescriptor(ClassLinker::ClassRoot(i))) << " i = " << i;
1068  }
1069}
1070
1071TEST_F(ClassLinkerTest, ValidatePredefinedClassSizes) {
1072  ScopedObjectAccess soa(Thread::Current());
1073  NullHandle<mirror::ClassLoader> class_loader;
1074  mirror::Class* c;
1075
1076  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Class;", class_loader);
1077  EXPECT_EQ(c->GetClassSize(), mirror::Class::ClassClassSize());
1078
1079  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Object;", class_loader);
1080  EXPECT_EQ(c->GetClassSize(), mirror::Object::ClassSize());
1081
1082  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/String;", class_loader);
1083  EXPECT_EQ(c->GetClassSize(), mirror::String::ClassSize());
1084
1085  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/DexCache;", class_loader);
1086  EXPECT_EQ(c->GetClassSize(), mirror::DexCache::ClassSize());
1087
1088  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/reflect/ArtField;", class_loader);
1089  EXPECT_EQ(c->GetClassSize(), mirror::ArtField::ClassSize());
1090
1091  c = class_linker_->FindClass(soa.Self(), "Ljava/lang/reflect/ArtMethod;", class_loader);
1092  EXPECT_EQ(c->GetClassSize(), mirror::ArtMethod::ClassSize());
1093}
1094
1095static void CheckMethod(mirror::ArtMethod* method, bool verified)
1096    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
1097  if (!method->IsNative() && !method->IsAbstract()) {
1098    EXPECT_EQ((method->GetAccessFlags() & kAccPreverified) != 0U, verified)
1099        << PrettyMethod(method, true);
1100  }
1101}
1102
1103static void CheckPreverified(mirror::Class* c, bool preverified)
1104    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
1105  EXPECT_EQ((c->GetAccessFlags() & kAccPreverified) != 0U, preverified)
1106      << "Class " << PrettyClass(c) << " not as expected";
1107  for (uint32_t i = 0; i < c->NumDirectMethods(); ++i) {
1108    CheckMethod(c->GetDirectMethod(i), preverified);
1109  }
1110  for (uint32_t i = 0; i < c->NumVirtualMethods(); ++i) {
1111    CheckMethod(c->GetVirtualMethod(i), preverified);
1112  }
1113}
1114
1115TEST_F(ClassLinkerTest, Preverified_InitializedBoot) {
1116  ScopedObjectAccess soa(Thread::Current());
1117
1118  mirror::Class* JavaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
1119  ASSERT_TRUE(JavaLangObject != NULL);
1120  EXPECT_TRUE(JavaLangObject->IsInitialized()) << "Not testing already initialized class from the "
1121                                                  "core";
1122  CheckPreverified(JavaLangObject, true);
1123}
1124
1125TEST_F(ClassLinkerTest, Preverified_UninitializedBoot) {
1126  ScopedObjectAccess soa(Thread::Current());
1127
1128  StackHandleScope<1> hs(soa.Self());
1129
1130  Handle<mirror::Class> security_manager(hs.NewHandle(class_linker_->FindSystemClass(
1131      soa.Self(), "Ljava/lang/SecurityManager;")));
1132  EXPECT_FALSE(security_manager->IsInitialized()) << "Not testing uninitialized class from the "
1133                                                     "core";
1134
1135  CheckPreverified(security_manager.Get(), false);
1136
1137  class_linker_->EnsureInitialized(security_manager, true, true);
1138  CheckPreverified(security_manager.Get(), true);
1139}
1140
1141TEST_F(ClassLinkerTest, Preverified_App) {
1142  ScopedObjectAccess soa(Thread::Current());
1143
1144  StackHandleScope<2> hs(soa.Self());
1145  Handle<mirror::ClassLoader> class_loader(
1146      hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Statics"))));
1147  Handle<mirror::Class> statics(
1148      hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
1149
1150  CheckPreverified(statics.Get(), false);
1151
1152  class_linker_->EnsureInitialized(statics, true, true);
1153  CheckPreverified(statics.Get(), true);
1154}
1155
1156}  // namespace art
1157