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android_mt6572_jiabo/art/runtime/class_linker_test.cc
FuQuan 3ff2876a30 first commit
2025-09-05 16:56:03 +08:00

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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "class_linker.h"
#include <memory>
#include <string>
#include "art_field-inl.h"
#include "art_method-inl.h"
#include "class_linker-inl.h"
#include "common_runtime_test.h"
#include "dex_file.h"
#include "experimental_flags.h"
#include "entrypoints/entrypoint_utils-inl.h"
#include "gc/heap.h"
#include "mirror/abstract_method.h"
#include "mirror/accessible_object.h"
#include "mirror/class-inl.h"
#include "mirror/dex_cache.h"
#include "mirror/field.h"
#include "mirror/object-inl.h"
#include "mirror/object_array-inl.h"
#include "mirror/proxy.h"
#include "mirror/reference.h"
#include "mirror/stack_trace_element.h"
#include "mirror/string-inl.h"
#include "handle_scope-inl.h"
#include "scoped_thread_state_change.h"
#include "thread-inl.h"
namespace art {
class ClassLinkerTest : public CommonRuntimeTest {
protected:
void AssertNonExistentClass(const std::string& descriptor)
SHARED_REQUIRES(Locks::mutator_lock_) {
Thread* self = Thread::Current();
EXPECT_TRUE(class_linker_->FindSystemClass(self, descriptor.c_str()) == nullptr);
EXPECT_TRUE(self->IsExceptionPending());
mirror::Object* exception = self->GetException();
self->ClearException();
mirror::Class* exception_class =
class_linker_->FindSystemClass(self, "Ljava/lang/NoClassDefFoundError;");
EXPECT_TRUE(exception->InstanceOf(exception_class));
}
void AssertPrimitiveClass(const std::string& descriptor)
SHARED_REQUIRES(Locks::mutator_lock_) {
Thread* self = Thread::Current();
AssertPrimitiveClass(descriptor, class_linker_->FindSystemClass(self, descriptor.c_str()));
}
void AssertPrimitiveClass(const std::string& descriptor, mirror::Class* primitive)
SHARED_REQUIRES(Locks::mutator_lock_) {
ASSERT_TRUE(primitive != nullptr);
ASSERT_TRUE(primitive->GetClass() != nullptr);
ASSERT_EQ(primitive->GetClass(), primitive->GetClass()->GetClass());
EXPECT_TRUE(primitive->GetClass()->GetSuperClass() != nullptr);
std::string temp;
ASSERT_STREQ(descriptor.c_str(), primitive->GetDescriptor(&temp));
EXPECT_TRUE(primitive->GetSuperClass() == nullptr);
EXPECT_FALSE(primitive->HasSuperClass());
EXPECT_TRUE(primitive->GetClassLoader() == nullptr);
EXPECT_EQ(mirror::Class::kStatusInitialized, primitive->GetStatus());
EXPECT_FALSE(primitive->IsErroneous());
EXPECT_TRUE(primitive->IsLoaded());
EXPECT_TRUE(primitive->IsResolved());
EXPECT_TRUE(primitive->IsVerified());
EXPECT_TRUE(primitive->IsInitialized());
EXPECT_FALSE(primitive->IsArrayInstance());
EXPECT_FALSE(primitive->IsArrayClass());
EXPECT_TRUE(primitive->GetComponentType() == nullptr);
EXPECT_FALSE(primitive->IsInterface());
EXPECT_TRUE(primitive->IsPublic());
EXPECT_TRUE(primitive->IsFinal());
EXPECT_TRUE(primitive->IsPrimitive());
EXPECT_FALSE(primitive->IsSynthetic());
EXPECT_EQ(0U, primitive->NumDirectMethods());
EXPECT_EQ(0U, primitive->NumVirtualMethods());
EXPECT_EQ(0U, primitive->NumInstanceFields());
EXPECT_EQ(0U, primitive->NumStaticFields());
EXPECT_EQ(0U, primitive->NumDirectInterfaces());
EXPECT_FALSE(primitive->HasVTable());
EXPECT_EQ(0, primitive->GetIfTableCount());
EXPECT_TRUE(primitive->GetIfTable() == nullptr);
EXPECT_EQ(kAccPublic | kAccFinal | kAccAbstract, primitive->GetAccessFlags());
}
void AssertObjectClass(mirror::Class* JavaLangObject)
SHARED_REQUIRES(Locks::mutator_lock_) {
ASSERT_TRUE(JavaLangObject != nullptr);
ASSERT_TRUE(JavaLangObject->GetClass() != nullptr);
ASSERT_EQ(JavaLangObject->GetClass(),
JavaLangObject->GetClass()->GetClass());
EXPECT_EQ(JavaLangObject, JavaLangObject->GetClass()->GetSuperClass());
std::string temp;
ASSERT_STREQ(JavaLangObject->GetDescriptor(&temp), "Ljava/lang/Object;");
EXPECT_TRUE(JavaLangObject->GetSuperClass() == nullptr);
EXPECT_FALSE(JavaLangObject->HasSuperClass());
EXPECT_TRUE(JavaLangObject->GetClassLoader() == nullptr);
EXPECT_EQ(mirror::Class::kStatusInitialized, JavaLangObject->GetStatus());
EXPECT_FALSE(JavaLangObject->IsErroneous());
EXPECT_TRUE(JavaLangObject->IsLoaded());
EXPECT_TRUE(JavaLangObject->IsResolved());
EXPECT_TRUE(JavaLangObject->IsVerified());
EXPECT_TRUE(JavaLangObject->IsInitialized());
EXPECT_FALSE(JavaLangObject->IsArrayInstance());
EXPECT_FALSE(JavaLangObject->IsArrayClass());
EXPECT_TRUE(JavaLangObject->GetComponentType() == nullptr);
EXPECT_FALSE(JavaLangObject->IsInterface());
EXPECT_TRUE(JavaLangObject->IsPublic());
EXPECT_FALSE(JavaLangObject->IsFinal());
EXPECT_FALSE(JavaLangObject->IsPrimitive());
EXPECT_FALSE(JavaLangObject->IsSynthetic());
EXPECT_EQ(2U, JavaLangObject->NumDirectMethods());
EXPECT_EQ(11U, JavaLangObject->NumVirtualMethods());
if (!kUseBrooksReadBarrier) {
EXPECT_EQ(2U, JavaLangObject->NumInstanceFields());
} else {
EXPECT_EQ(4U, JavaLangObject->NumInstanceFields());
}
EXPECT_STREQ(JavaLangObject->GetInstanceField(0)->GetName(),
"shadow$_klass_");
EXPECT_STREQ(JavaLangObject->GetInstanceField(1)->GetName(),
"shadow$_monitor_");
if (kUseBrooksReadBarrier) {
EXPECT_STREQ(JavaLangObject->GetInstanceField(2)->GetName(),
"shadow$_x_rb_ptr_");
EXPECT_STREQ(JavaLangObject->GetInstanceField(3)->GetName(),
"shadow$_x_xpadding_");
}
EXPECT_EQ(0U, JavaLangObject->NumStaticFields());
EXPECT_EQ(0U, JavaLangObject->NumDirectInterfaces());
size_t pointer_size = class_linker_->GetImagePointerSize();
ArtMethod* unimplemented = runtime_->GetImtUnimplementedMethod();
ImTable* imt = JavaLangObject->GetImt(pointer_size);
ASSERT_NE(nullptr, imt);
for (size_t i = 0; i < ImTable::kSize; ++i) {
ASSERT_EQ(unimplemented, imt->Get(i, pointer_size));
}
}
void AssertArrayClass(const std::string& array_descriptor,
const std::string& component_type,
mirror::ClassLoader* class_loader)
SHARED_REQUIRES(Locks::mutator_lock_) {
Thread* self = Thread::Current();
StackHandleScope<2> hs(self);
Handle<mirror::ClassLoader> loader(hs.NewHandle(class_loader));
Handle<mirror::Class> array(
hs.NewHandle(class_linker_->FindClass(self, array_descriptor.c_str(), loader)));
std::string temp;
EXPECT_STREQ(component_type.c_str(), array->GetComponentType()->GetDescriptor(&temp));
EXPECT_EQ(class_loader, array->GetClassLoader());
EXPECT_EQ(kAccFinal | kAccAbstract, (array->GetAccessFlags() & (kAccFinal | kAccAbstract)));
AssertArrayClass(array_descriptor, array);
}
void AssertArrayClass(const std::string& array_descriptor, Handle<mirror::Class> array)
SHARED_REQUIRES(Locks::mutator_lock_) {
ASSERT_TRUE(array.Get() != nullptr);
ASSERT_TRUE(array->GetClass() != nullptr);
ASSERT_EQ(array->GetClass(), array->GetClass()->GetClass());
EXPECT_TRUE(array->GetClass()->GetSuperClass() != nullptr);
std::string temp;
ASSERT_STREQ(array_descriptor.c_str(), array->GetDescriptor(&temp));
EXPECT_TRUE(array->GetSuperClass() != nullptr);
Thread* self = Thread::Current();
EXPECT_EQ(class_linker_->FindSystemClass(self, "Ljava/lang/Object;"), array->GetSuperClass());
EXPECT_TRUE(array->HasSuperClass());
ASSERT_TRUE(array->GetComponentType() != nullptr);
ASSERT_GT(strlen(array->GetComponentType()->GetDescriptor(&temp)), 0U);
EXPECT_EQ(mirror::Class::kStatusInitialized, array->GetStatus());
EXPECT_FALSE(array->IsErroneous());
EXPECT_TRUE(array->IsLoaded());
EXPECT_TRUE(array->IsResolved());
EXPECT_TRUE(array->IsVerified());
EXPECT_TRUE(array->IsInitialized());
EXPECT_FALSE(array->IsArrayInstance());
EXPECT_TRUE(array->IsArrayClass());
EXPECT_FALSE(array->IsInterface());
EXPECT_EQ(array->GetComponentType()->IsPublic(), array->IsPublic());
EXPECT_TRUE(array->IsFinal());
EXPECT_FALSE(array->IsPrimitive());
EXPECT_FALSE(array->IsSynthetic());
EXPECT_EQ(0U, array->NumDirectMethods());
EXPECT_EQ(0U, array->NumVirtualMethods());
EXPECT_EQ(0U, array->NumInstanceFields());
EXPECT_EQ(0U, array->NumStaticFields());
EXPECT_EQ(2U, array->NumDirectInterfaces());
EXPECT_TRUE(array->ShouldHaveImt());
EXPECT_TRUE(array->ShouldHaveEmbeddedVTable());
EXPECT_EQ(2, array->GetIfTableCount());
ASSERT_TRUE(array->GetIfTable() != nullptr);
mirror::Class* direct_interface0 = mirror::Class::GetDirectInterface(self, array, 0);
EXPECT_TRUE(direct_interface0 != nullptr);
EXPECT_STREQ(direct_interface0->GetDescriptor(&temp), "Ljava/lang/Cloneable;");
mirror::Class* direct_interface1 = mirror::Class::GetDirectInterface(self, array, 1);
EXPECT_STREQ(direct_interface1->GetDescriptor(&temp), "Ljava/io/Serializable;");
mirror::Class* array_ptr = array->GetComponentType();
EXPECT_EQ(class_linker_->FindArrayClass(self, &array_ptr), array.Get());
size_t pointer_size = class_linker_->GetImagePointerSize();
mirror::Class* JavaLangObject =
class_linker_->FindSystemClass(self, "Ljava/lang/Object;");
ImTable* JavaLangObject_imt = JavaLangObject->GetImt(pointer_size);
// IMT of a array class should be shared with the IMT of the java.lag.Object
ASSERT_EQ(JavaLangObject_imt, array->GetImt(pointer_size));
}
void AssertMethod(ArtMethod* method) SHARED_REQUIRES(Locks::mutator_lock_) {
EXPECT_TRUE(method != nullptr);
EXPECT_TRUE(method->GetDeclaringClass() != nullptr);
EXPECT_TRUE(method->GetName() != nullptr);
EXPECT_TRUE(method->GetSignature() != Signature::NoSignature());
EXPECT_TRUE(method->HasDexCacheResolvedMethods(sizeof(void*)));
EXPECT_TRUE(method->HasDexCacheResolvedTypes(sizeof(void*)));
EXPECT_TRUE(method->HasSameDexCacheResolvedMethods(
method->GetDeclaringClass()->GetDexCache()->GetResolvedMethods(),
sizeof(void*)));
EXPECT_TRUE(method->HasSameDexCacheResolvedTypes(
method->GetDeclaringClass()->GetDexCache()->GetResolvedTypes(),
sizeof(void*)));
}
void AssertField(mirror::Class* klass, ArtField* field)
SHARED_REQUIRES(Locks::mutator_lock_) {
EXPECT_TRUE(field != nullptr);
EXPECT_EQ(klass, field->GetDeclaringClass());
EXPECT_TRUE(field->GetName() != nullptr);
EXPECT_TRUE(field->GetType<true>() != nullptr);
}
void AssertClass(const std::string& descriptor, Handle<mirror::Class> klass)
SHARED_REQUIRES(Locks::mutator_lock_) {
std::string temp;
EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor(&temp));
if (descriptor == "Ljava/lang/Object;") {
EXPECT_FALSE(klass->HasSuperClass());
} else {
EXPECT_TRUE(klass->HasSuperClass());
EXPECT_TRUE(klass->GetSuperClass() != nullptr);
}
EXPECT_TRUE(klass->GetClass() != nullptr);
EXPECT_EQ(klass->GetClass(), klass->GetClass()->GetClass());
EXPECT_TRUE(klass->GetDexCache() != nullptr);
EXPECT_TRUE(klass->IsLoaded());
EXPECT_TRUE(klass->IsResolved());
EXPECT_FALSE(klass->IsErroneous());
EXPECT_FALSE(klass->IsArrayClass());
EXPECT_TRUE(klass->GetComponentType() == nullptr);
EXPECT_TRUE(klass->IsInSamePackage(klass.Get()));
EXPECT_TRUE(klass->GetDexCacheStrings() != nullptr);
EXPECT_EQ(klass->GetDexCacheStrings(), klass->GetDexCache()->GetStrings());
std::string temp2;
EXPECT_TRUE(mirror::Class::IsInSamePackage(klass->GetDescriptor(&temp),
klass->GetDescriptor(&temp2)));
if (klass->IsInterface()) {
EXPECT_TRUE(klass->IsAbstract());
// Check that all direct methods are static (either <clinit> or a regular static method).
for (ArtMethod& m : klass->GetDirectMethods(sizeof(void*))) {
EXPECT_TRUE(m.IsStatic());
EXPECT_TRUE(m.IsDirect());
}
} else {
if (!klass->IsSynthetic()) {
EXPECT_NE(0U, klass->NumDirectMethods());
}
}
EXPECT_EQ(klass->IsInterface(), !klass->HasVTable());
mirror::IfTable* iftable = klass->GetIfTable();
for (int i = 0; i < klass->GetIfTableCount(); i++) {
mirror::Class* interface = iftable->GetInterface(i);
ASSERT_TRUE(interface != nullptr);
if (klass->IsInterface()) {
EXPECT_EQ(0U, iftable->GetMethodArrayCount(i));
} else {
EXPECT_EQ(interface->NumDeclaredVirtualMethods(), iftable->GetMethodArrayCount(i));
}
}
if (klass->IsAbstract()) {
EXPECT_FALSE(klass->IsFinal());
} else {
EXPECT_FALSE(klass->IsAnnotation());
}
if (klass->IsFinal()) {
EXPECT_FALSE(klass->IsAbstract());
EXPECT_FALSE(klass->IsAnnotation());
}
if (klass->IsAnnotation()) {
EXPECT_FALSE(klass->IsFinal());
EXPECT_TRUE(klass->IsAbstract());
}
EXPECT_FALSE(klass->IsPrimitive());
EXPECT_TRUE(klass->CanAccess(klass.Get()));
for (ArtMethod& method : klass->GetDirectMethods(sizeof(void*))) {
AssertMethod(&method);
EXPECT_TRUE(method.IsDirect());
EXPECT_EQ(klass.Get(), method.GetDeclaringClass());
}
for (ArtMethod& method : klass->GetDeclaredVirtualMethods(sizeof(void*))) {
AssertMethod(&method);
EXPECT_FALSE(method.IsDirect());
EXPECT_EQ(klass.Get(), method.GetDeclaringClass());
}
for (ArtMethod& method : klass->GetCopiedMethods(sizeof(void*))) {
AssertMethod(&method);
EXPECT_FALSE(method.IsDirect());
EXPECT_TRUE(method.IsCopied());
EXPECT_TRUE(method.GetDeclaringClass()->IsInterface())
<< "declaring class: " << PrettyClass(method.GetDeclaringClass());
EXPECT_TRUE(method.GetDeclaringClass()->IsAssignableFrom(klass.Get()))
<< "declaring class: " << PrettyClass(method.GetDeclaringClass());
}
for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
ArtField* field = klass->GetInstanceField(i);
AssertField(klass.Get(), field);
EXPECT_FALSE(field->IsStatic());
}
for (size_t i = 0; i < klass->NumStaticFields(); i++) {
ArtField* field = klass->GetStaticField(i);
AssertField(klass.Get(), field);
EXPECT_TRUE(field->IsStatic());
}
// Confirm that all instances field offsets are packed together at the start.
EXPECT_GE(klass->NumInstanceFields(), klass->NumReferenceInstanceFields());
MemberOffset start_ref_offset = klass->GetFirstReferenceInstanceFieldOffset();
MemberOffset end_ref_offset(start_ref_offset.Uint32Value() +
klass->NumReferenceInstanceFields() *
sizeof(mirror::HeapReference<mirror::Object>));
MemberOffset current_ref_offset = start_ref_offset;
for (size_t i = 0; i < klass->NumInstanceFields(); i++) {
ArtField* field = klass->GetInstanceField(i);
mirror::Class* field_type = field->GetType<true>();
ASSERT_TRUE(field_type != nullptr);
if (!field->IsPrimitiveType()) {
ASSERT_TRUE(!field_type->IsPrimitive());
ASSERT_EQ(current_ref_offset.Uint32Value(), field->GetOffset().Uint32Value());
if (current_ref_offset.Uint32Value() == end_ref_offset.Uint32Value()) {
// While Reference.referent is not primitive, the ClassLinker
// treats it as such so that the garbage collector won't scan it.
EXPECT_EQ(PrettyField(field),
"java.lang.Object java.lang.ref.Reference.referent");
} else {
current_ref_offset = MemberOffset(current_ref_offset.Uint32Value() +
sizeof(mirror::HeapReference<mirror::Object>));
}
} else {
if (field->GetOffset().Uint32Value() < end_ref_offset.Uint32Value()) {
// Shuffled before references.
ASSERT_LT(field->GetOffset().Uint32Value(), start_ref_offset.Uint32Value());
CHECK(!IsAligned<4>(field->GetOffset().Uint32Value()));
}
}
}
ASSERT_EQ(end_ref_offset.Uint32Value(), current_ref_offset.Uint32Value());
uint32_t total_num_reference_instance_fields = 0;
mirror::Class* k = klass.Get();
while (k != nullptr) {
total_num_reference_instance_fields += k->NumReferenceInstanceFields();
k = k->GetSuperClass();
}
EXPECT_GE(total_num_reference_instance_fields, 1U); // Should always have Object's class.
if (klass->GetReferenceInstanceOffsets() != mirror::Class::kClassWalkSuper) {
// The reference instance offsets have a bit set for each reference offset.
// +1 for Object's class.
EXPECT_EQ(static_cast<uint32_t>(POPCOUNT(klass->GetReferenceInstanceOffsets())) + 1,
total_num_reference_instance_fields);
}
}
void AssertDexFileClass(mirror::ClassLoader* class_loader, const std::string& descriptor)
SHARED_REQUIRES(Locks::mutator_lock_) {
ASSERT_TRUE(descriptor != nullptr);
Thread* self = Thread::Current();
StackHandleScope<1> hs(self);
Handle<mirror::Class> klass(
hs.NewHandle(class_linker_->FindSystemClass(self, descriptor.c_str())));
ASSERT_TRUE(klass.Get() != nullptr);
std::string temp;
EXPECT_STREQ(descriptor.c_str(), klass.Get()->GetDescriptor(&temp));
EXPECT_EQ(class_loader, klass->GetClassLoader());
if (klass->IsPrimitive()) {
AssertPrimitiveClass(descriptor, klass.Get());
} else if (klass->IsArrayClass()) {
AssertArrayClass(descriptor, klass);
} else {
AssertClass(descriptor, klass);
}
}
void AssertDexFile(const DexFile& dex, mirror::ClassLoader* class_loader)
SHARED_REQUIRES(Locks::mutator_lock_) {
// Verify all the classes defined in this file
for (size_t i = 0; i < dex.NumClassDefs(); i++) {
const DexFile::ClassDef& class_def = dex.GetClassDef(i);
const char* descriptor = dex.GetClassDescriptor(class_def);
AssertDexFileClass(class_loader, descriptor);
}
// Verify all the types referenced by this file
for (size_t i = 0; i < dex.NumTypeIds(); i++) {
const DexFile::TypeId& type_id = dex.GetTypeId(i);
const char* descriptor = dex.GetTypeDescriptor(type_id);
AssertDexFileClass(class_loader, descriptor);
}
TestRootVisitor visitor;
class_linker_->VisitRoots(&visitor, kVisitRootFlagAllRoots);
// Verify the dex cache has resolution methods in all resolved method slots
mirror::DexCache* dex_cache = class_linker_->FindDexCache(Thread::Current(), dex);
auto* resolved_methods = dex_cache->GetResolvedMethods();
for (size_t i = 0, num_methods = dex_cache->NumResolvedMethods(); i != num_methods; ++i) {
EXPECT_TRUE(
mirror::DexCache::GetElementPtrSize(resolved_methods, i, sizeof(void*)) != nullptr)
<< dex.GetLocation() << " i=" << i;
}
}
class TestRootVisitor : public SingleRootVisitor {
public:
void VisitRoot(mirror::Object* root, const RootInfo& info ATTRIBUTE_UNUSED) OVERRIDE {
EXPECT_TRUE(root != nullptr);
}
};
};
struct CheckOffset {
size_t cpp_offset;
const char* java_name;
CheckOffset(size_t c, const char* j) : cpp_offset(c), java_name(j) {}
};
template <typename T>
struct CheckOffsets {
CheckOffsets(bool is_static_in, const char* class_descriptor_in)
: is_static(is_static_in), class_descriptor(class_descriptor_in) {}
bool is_static;
std::string class_descriptor;
std::vector<CheckOffset> offsets;
bool Check() SHARED_REQUIRES(Locks::mutator_lock_) {
Thread* self = Thread::Current();
mirror::Class* klass =
Runtime::Current()->GetClassLinker()->FindSystemClass(self, class_descriptor.c_str());
CHECK(klass != nullptr) << class_descriptor;
bool error = false;
// Classes have a different size due to padding field. Strings are variable length.
if (!klass->IsClassClass() && !klass->IsStringClass() && !is_static) {
// Currently only required for AccessibleObject since of the padding fields. The class linker
// says AccessibleObject is 9 bytes but sizeof(AccessibleObject) is 12 bytes due to padding.
// The RoundUp is to get around this case.
static constexpr size_t kPackAlignment = 4;
size_t expected_size = RoundUp(is_static ? klass->GetClassSize(): klass->GetObjectSize(),
kPackAlignment);
if (sizeof(T) != expected_size) {
LOG(ERROR) << "Class size mismatch:"
<< " class=" << class_descriptor
<< " Java=" << expected_size
<< " C++=" << sizeof(T);
error = true;
}
}
size_t num_fields = is_static ? klass->NumStaticFields() : klass->NumInstanceFields();
if (offsets.size() != num_fields) {
LOG(ERROR) << "Field count mismatch:"
<< " class=" << class_descriptor
<< " Java=" << num_fields
<< " C++=" << offsets.size();
error = true;
}
for (size_t i = 0; i < offsets.size(); i++) {
ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
StringPiece field_name(field->GetName());
if (field_name != offsets[i].java_name) {
error = true;
}
}
if (error) {
for (size_t i = 0; i < offsets.size(); i++) {
CheckOffset& offset = offsets[i];
ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
StringPiece field_name(field->GetName());
if (field_name != offsets[i].java_name) {
LOG(ERROR) << "JAVA FIELD ORDER MISMATCH NEXT LINE:";
}
LOG(ERROR) << "Java field order:"
<< " i=" << i << " class=" << class_descriptor
<< " Java=" << field_name
<< " CheckOffsets=" << offset.java_name;
}
}
for (size_t i = 0; i < offsets.size(); i++) {
CheckOffset& offset = offsets[i];
ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
error = true;
}
}
if (error) {
for (size_t i = 0; i < offsets.size(); i++) {
CheckOffset& offset = offsets[i];
ArtField* field = is_static ? klass->GetStaticField(i) : klass->GetInstanceField(i);
if (field->GetOffset().Uint32Value() != offset.cpp_offset) {
LOG(ERROR) << "OFFSET MISMATCH NEXT LINE:";
}
LOG(ERROR) << "Offset: class=" << class_descriptor << " field=" << offset.java_name
<< " Java=" << field->GetOffset().Uint32Value() << " C++=" << offset.cpp_offset;
}
}
return !error;
};
void addOffset(size_t offset, const char* name) {
offsets.push_back(CheckOffset(offset, name));
}
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(CheckOffsets);
};
// Note that ClassLinkerTest.ValidateFieldOrderOfJavaCppUnionClasses
// is first since if it is failing, others are unlikely to succeed.
struct ObjectOffsets : public CheckOffsets<mirror::Object> {
ObjectOffsets() : CheckOffsets<mirror::Object>(false, "Ljava/lang/Object;") {
addOffset(OFFSETOF_MEMBER(mirror::Object, klass_), "shadow$_klass_");
addOffset(OFFSETOF_MEMBER(mirror::Object, monitor_), "shadow$_monitor_");
#ifdef USE_BROOKS_READ_BARRIER
addOffset(OFFSETOF_MEMBER(mirror::Object, x_rb_ptr_), "shadow$_x_rb_ptr_");
addOffset(OFFSETOF_MEMBER(mirror::Object, x_xpadding_), "shadow$_x_xpadding_");
#endif
};
};
struct ClassOffsets : public CheckOffsets<mirror::Class> {
ClassOffsets() : CheckOffsets<mirror::Class>(false, "Ljava/lang/Class;") {
addOffset(OFFSETOF_MEMBER(mirror::Class, access_flags_), "accessFlags");
addOffset(OFFSETOF_MEMBER(mirror::Class, annotation_type_), "annotationType");
addOffset(OFFSETOF_MEMBER(mirror::Class, class_flags_), "classFlags");
addOffset(OFFSETOF_MEMBER(mirror::Class, class_loader_), "classLoader");
addOffset(OFFSETOF_MEMBER(mirror::Class, class_size_), "classSize");
addOffset(OFFSETOF_MEMBER(mirror::Class, clinit_thread_id_), "clinitThreadId");
addOffset(OFFSETOF_MEMBER(mirror::Class, component_type_), "componentType");
addOffset(OFFSETOF_MEMBER(mirror::Class, copied_methods_offset_), "copiedMethodsOffset");
addOffset(OFFSETOF_MEMBER(mirror::Class, dex_cache_), "dexCache");
addOffset(OFFSETOF_MEMBER(mirror::Class, dex_cache_strings_), "dexCacheStrings");
addOffset(OFFSETOF_MEMBER(mirror::Class, dex_class_def_idx_), "dexClassDefIndex");
addOffset(OFFSETOF_MEMBER(mirror::Class, dex_type_idx_), "dexTypeIndex");
addOffset(OFFSETOF_MEMBER(mirror::Class, ifields_), "iFields");
addOffset(OFFSETOF_MEMBER(mirror::Class, iftable_), "ifTable");
addOffset(OFFSETOF_MEMBER(mirror::Class, methods_), "methods");
addOffset(OFFSETOF_MEMBER(mirror::Class, name_), "name");
addOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_instance_fields_),
"numReferenceInstanceFields");
addOffset(OFFSETOF_MEMBER(mirror::Class, num_reference_static_fields_),
"numReferenceStaticFields");
addOffset(OFFSETOF_MEMBER(mirror::Class, object_size_), "objectSize");
addOffset(OFFSETOF_MEMBER(mirror::Class, primitive_type_), "primitiveType");
addOffset(OFFSETOF_MEMBER(mirror::Class, reference_instance_offsets_),
"referenceInstanceOffsets");
addOffset(OFFSETOF_MEMBER(mirror::Class, sfields_), "sFields");
addOffset(OFFSETOF_MEMBER(mirror::Class, status_), "status");
addOffset(OFFSETOF_MEMBER(mirror::Class, super_class_), "superClass");
addOffset(OFFSETOF_MEMBER(mirror::Class, verify_error_), "verifyError");
addOffset(OFFSETOF_MEMBER(mirror::Class, virtual_methods_offset_), "virtualMethodsOffset");
addOffset(OFFSETOF_MEMBER(mirror::Class, vtable_), "vtable");
};
};
struct StringOffsets : public CheckOffsets<mirror::String> {
StringOffsets() : CheckOffsets<mirror::String>(false, "Ljava/lang/String;") {
addOffset(OFFSETOF_MEMBER(mirror::String, count_), "count");
addOffset(OFFSETOF_MEMBER(mirror::String, hash_code_), "hash");
};
};
struct ThrowableOffsets : public CheckOffsets<mirror::Throwable> {
ThrowableOffsets() : CheckOffsets<mirror::Throwable>(false, "Ljava/lang/Throwable;") {
addOffset(OFFSETOF_MEMBER(mirror::Throwable, backtrace_), "backtrace");
addOffset(OFFSETOF_MEMBER(mirror::Throwable, cause_), "cause");
addOffset(OFFSETOF_MEMBER(mirror::Throwable, detail_message_), "detailMessage");
addOffset(OFFSETOF_MEMBER(mirror::Throwable, stack_trace_), "stackTrace");
addOffset(OFFSETOF_MEMBER(mirror::Throwable, suppressed_exceptions_), "suppressedExceptions");
};
};
struct StackTraceElementOffsets : public CheckOffsets<mirror::StackTraceElement> {
StackTraceElementOffsets() : CheckOffsets<mirror::StackTraceElement>(
false, "Ljava/lang/StackTraceElement;") {
addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, declaring_class_), "declaringClass");
addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, file_name_), "fileName");
addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, line_number_), "lineNumber");
addOffset(OFFSETOF_MEMBER(mirror::StackTraceElement, method_name_), "methodName");
};
};
struct ClassLoaderOffsets : public CheckOffsets<mirror::ClassLoader> {
ClassLoaderOffsets() : CheckOffsets<mirror::ClassLoader>(false, "Ljava/lang/ClassLoader;") {
addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, allocator_), "allocator");
addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, class_table_), "classTable");
addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, packages_), "packages");
addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, parent_), "parent");
addOffset(OFFSETOF_MEMBER(mirror::ClassLoader, proxyCache_), "proxyCache");
};
};
struct ProxyOffsets : public CheckOffsets<mirror::Proxy> {
ProxyOffsets() : CheckOffsets<mirror::Proxy>(false, "Ljava/lang/reflect/Proxy;") {
addOffset(OFFSETOF_MEMBER(mirror::Proxy, h_), "h");
};
};
struct DexCacheOffsets : public CheckOffsets<mirror::DexCache> {
DexCacheOffsets() : CheckOffsets<mirror::DexCache>(false, "Ljava/lang/DexCache;") {
addOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_), "dex");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, dex_file_), "dexFile");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, location_), "location");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_fields_), "numResolvedFields");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_methods_), "numResolvedMethods");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_types_), "numResolvedTypes");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_strings_), "numStrings");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_), "resolvedFields");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_methods_), "resolvedMethods");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_types_), "resolvedTypes");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, strings_), "strings");
};
};
struct ReferenceOffsets : public CheckOffsets<mirror::Reference> {
ReferenceOffsets() : CheckOffsets<mirror::Reference>(false, "Ljava/lang/ref/Reference;") {
addOffset(OFFSETOF_MEMBER(mirror::Reference, pending_next_), "pendingNext");
addOffset(OFFSETOF_MEMBER(mirror::Reference, queue_), "queue");
addOffset(OFFSETOF_MEMBER(mirror::Reference, queue_next_), "queueNext");
addOffset(OFFSETOF_MEMBER(mirror::Reference, referent_), "referent");
};
};
struct FinalizerReferenceOffsets : public CheckOffsets<mirror::FinalizerReference> {
FinalizerReferenceOffsets() : CheckOffsets<mirror::FinalizerReference>(
false, "Ljava/lang/ref/FinalizerReference;") {
addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, next_), "next");
addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, prev_), "prev");
addOffset(OFFSETOF_MEMBER(mirror::FinalizerReference, zombie_), "zombie");
};
};
struct AccessibleObjectOffsets : public CheckOffsets<mirror::AccessibleObject> {
AccessibleObjectOffsets() : CheckOffsets<mirror::AccessibleObject>(
false, "Ljava/lang/reflect/AccessibleObject;") {
addOffset(mirror::AccessibleObject::FlagOffset().Uint32Value(), "override");
};
};
struct FieldOffsets : public CheckOffsets<mirror::Field> {
FieldOffsets() : CheckOffsets<mirror::Field>(false, "Ljava/lang/reflect/Field;") {
addOffset(OFFSETOF_MEMBER(mirror::Field, access_flags_), "accessFlags");
addOffset(OFFSETOF_MEMBER(mirror::Field, declaring_class_), "declaringClass");
addOffset(OFFSETOF_MEMBER(mirror::Field, dex_field_index_), "dexFieldIndex");
addOffset(OFFSETOF_MEMBER(mirror::Field, offset_), "offset");
addOffset(OFFSETOF_MEMBER(mirror::Field, type_), "type");
};
};
struct AbstractMethodOffsets : public CheckOffsets<mirror::AbstractMethod> {
AbstractMethodOffsets() : CheckOffsets<mirror::AbstractMethod>(
false, "Ljava/lang/reflect/AbstractMethod;") {
addOffset(OFFSETOF_MEMBER(mirror::AbstractMethod, access_flags_), "accessFlags");
addOffset(OFFSETOF_MEMBER(mirror::AbstractMethod, art_method_), "artMethod");
addOffset(OFFSETOF_MEMBER(mirror::AbstractMethod, declaring_class_), "declaringClass");
addOffset(OFFSETOF_MEMBER(mirror::AbstractMethod, declaring_class_of_overridden_method_),
"declaringClassOfOverriddenMethod");
addOffset(OFFSETOF_MEMBER(mirror::AbstractMethod, dex_method_index_), "dexMethodIndex");
};
};
// C++ fields must exactly match the fields in the Java classes. If this fails,
// reorder the fields in the C++ class. Managed class fields are ordered by
// ClassLinker::LinkFields.
TEST_F(ClassLinkerTest, ValidateFieldOrderOfJavaCppUnionClasses) {
ScopedObjectAccess soa(Thread::Current());
EXPECT_TRUE(ObjectOffsets().Check());
EXPECT_TRUE(ClassOffsets().Check());
EXPECT_TRUE(StringOffsets().Check());
EXPECT_TRUE(ThrowableOffsets().Check());
EXPECT_TRUE(StackTraceElementOffsets().Check());
EXPECT_TRUE(ClassLoaderOffsets().Check());
EXPECT_TRUE(ProxyOffsets().Check());
EXPECT_TRUE(DexCacheOffsets().Check());
EXPECT_TRUE(ReferenceOffsets().Check());
EXPECT_TRUE(FinalizerReferenceOffsets().Check());
EXPECT_TRUE(AccessibleObjectOffsets().Check());
EXPECT_TRUE(FieldOffsets().Check());
EXPECT_TRUE(AbstractMethodOffsets().Check());
}
TEST_F(ClassLinkerTest, FindClassNonexistent) {
ScopedObjectAccess soa(Thread::Current());
AssertNonExistentClass("NoSuchClass;");
AssertNonExistentClass("LNoSuchClass;");
}
TEST_F(ClassLinkerTest, GetDexFiles) {
ScopedObjectAccess soa(Thread::Current());
jobject jclass_loader = LoadDex("Nested");
std::vector<const DexFile*> dex_files(GetDexFiles(jclass_loader));
ASSERT_EQ(dex_files.size(), 1U);
EXPECT_TRUE(EndsWith(dex_files[0]->GetLocation(), "Nested.jar"));
jobject jclass_loader2 = LoadDex("MultiDex");
std::vector<const DexFile*> dex_files2(GetDexFiles(jclass_loader2));
ASSERT_EQ(dex_files2.size(), 2U);
EXPECT_TRUE(EndsWith(dex_files2[0]->GetLocation(), "MultiDex.jar"));
}
TEST_F(ClassLinkerTest, FindClassNested) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Nested"))));
mirror::Class* outer = class_linker_->FindClass(soa.Self(), "LNested;", class_loader);
ASSERT_TRUE(outer != nullptr);
EXPECT_EQ(0U, outer->NumVirtualMethods());
EXPECT_EQ(1U, outer->NumDirectMethods());
mirror::Class* inner = class_linker_->FindClass(soa.Self(), "LNested$Inner;", class_loader);
ASSERT_TRUE(inner != nullptr);
EXPECT_EQ(0U, inner->NumVirtualMethods());
EXPECT_EQ(1U, inner->NumDirectMethods());
}
TEST_F(ClassLinkerTest, FindClass_Primitives) {
ScopedObjectAccess soa(Thread::Current());
const std::string expected("BCDFIJSZV");
for (int ch = 1; ch < 256; ++ch) {
std::string descriptor;
descriptor.push_back(ch);
if (expected.find(ch) == std::string::npos) {
AssertNonExistentClass(descriptor);
} else {
AssertPrimitiveClass(descriptor);
}
}
}
TEST_F(ClassLinkerTest, FindClass) {
ScopedObjectAccess soa(Thread::Current());
mirror::Class* JavaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
AssertObjectClass(JavaLangObject);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
AssertNonExistentClass("LMyClass;");
mirror::Class* MyClass = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader);
ASSERT_TRUE(MyClass != nullptr);
ASSERT_TRUE(MyClass->GetClass() != nullptr);
ASSERT_EQ(MyClass->GetClass(), MyClass->GetClass()->GetClass());
EXPECT_EQ(JavaLangObject, MyClass->GetClass()->GetSuperClass());
std::string temp;
ASSERT_STREQ(MyClass->GetDescriptor(&temp), "LMyClass;");
EXPECT_TRUE(MyClass->GetSuperClass() == JavaLangObject);
EXPECT_TRUE(MyClass->HasSuperClass());
EXPECT_EQ(class_loader.Get(), MyClass->GetClassLoader());
EXPECT_EQ(mirror::Class::kStatusResolved, MyClass->GetStatus());
EXPECT_FALSE(MyClass->IsErroneous());
EXPECT_TRUE(MyClass->IsLoaded());
EXPECT_TRUE(MyClass->IsResolved());
EXPECT_FALSE(MyClass->IsVerified());
EXPECT_FALSE(MyClass->IsInitialized());
EXPECT_FALSE(MyClass->IsArrayInstance());
EXPECT_FALSE(MyClass->IsArrayClass());
EXPECT_TRUE(MyClass->GetComponentType() == nullptr);
EXPECT_FALSE(MyClass->IsInterface());
EXPECT_FALSE(MyClass->IsPublic());
EXPECT_FALSE(MyClass->IsFinal());
EXPECT_FALSE(MyClass->IsPrimitive());
EXPECT_FALSE(MyClass->IsSynthetic());
EXPECT_EQ(1U, MyClass->NumDirectMethods());
EXPECT_EQ(0U, MyClass->NumVirtualMethods());
EXPECT_EQ(0U, MyClass->NumInstanceFields());
EXPECT_EQ(0U, MyClass->NumStaticFields());
EXPECT_EQ(0U, MyClass->NumDirectInterfaces());
EXPECT_EQ(JavaLangObject->GetClass()->GetClass(), MyClass->GetClass()->GetClass());
// created by class_linker
AssertArrayClass("[C", "C", nullptr);
AssertArrayClass("[Ljava/lang/Object;", "Ljava/lang/Object;", nullptr);
// synthesized on the fly
AssertArrayClass("[[C", "[C", nullptr);
AssertArrayClass("[[[LMyClass;", "[[LMyClass;", class_loader.Get());
// or not available at all
AssertNonExistentClass("[[[[LNonExistentClass;");
}
TEST_F(ClassLinkerTest, LibCore) {
ScopedObjectAccess soa(Thread::Current());
ASSERT_TRUE(java_lang_dex_file_ != nullptr);
AssertDexFile(*java_lang_dex_file_, nullptr);
}
// The first reference array element must be a multiple of 4 bytes from the
// start of the object
TEST_F(ClassLinkerTest, ValidateObjectArrayElementsOffset) {
ScopedObjectAccess soa(Thread::Current());
mirror::Class* array_class = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
mirror::ObjectArray<mirror::String>* array =
mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), array_class, 0);
uintptr_t data_offset =
reinterpret_cast<uintptr_t>(array->GetRawData(sizeof(mirror::HeapReference<mirror::String>),
0));
if (sizeof(mirror::HeapReference<mirror::String>) == sizeof(int32_t)) {
EXPECT_TRUE(IsAligned<4>(data_offset)); // Check 4 byte alignment.
} else {
EXPECT_TRUE(IsAligned<8>(data_offset)); // Check 8 byte alignment.
}
}
TEST_F(ClassLinkerTest, ValidatePrimitiveArrayElementsOffset) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<5> hs(soa.Self());
Handle<mirror::LongArray> long_array(hs.NewHandle(mirror::LongArray::Alloc(soa.Self(), 0)));
EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[J"), long_array->GetClass());
uintptr_t data_offset = reinterpret_cast<uintptr_t>(long_array->GetData());
EXPECT_TRUE(IsAligned<8>(data_offset)); // Longs require 8 byte alignment
Handle<mirror::DoubleArray> double_array(hs.NewHandle(mirror::DoubleArray::Alloc(soa.Self(), 0)));
EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[D"), double_array->GetClass());
data_offset = reinterpret_cast<uintptr_t>(double_array->GetData());
EXPECT_TRUE(IsAligned<8>(data_offset)); // Doubles require 8 byte alignment
Handle<mirror::IntArray> int_array(hs.NewHandle(mirror::IntArray::Alloc(soa.Self(), 0)));
EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[I"), int_array->GetClass());
data_offset = reinterpret_cast<uintptr_t>(int_array->GetData());
EXPECT_TRUE(IsAligned<4>(data_offset)); // Ints require 4 byte alignment
Handle<mirror::CharArray> char_array(hs.NewHandle(mirror::CharArray::Alloc(soa.Self(), 0)));
EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[C"), char_array->GetClass());
data_offset = reinterpret_cast<uintptr_t>(char_array->GetData());
EXPECT_TRUE(IsAligned<2>(data_offset)); // Chars require 2 byte alignment
Handle<mirror::ShortArray> short_array(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 0)));
EXPECT_EQ(class_linker_->FindSystemClass(soa.Self(), "[S"), short_array->GetClass());
data_offset = reinterpret_cast<uintptr_t>(short_array->GetData());
EXPECT_TRUE(IsAligned<2>(data_offset)); // Shorts require 2 byte alignment
// Take it as given that bytes and booleans have byte alignment
}
TEST_F(ClassLinkerTest, ValidateBoxedTypes) {
// Validate that the "value" field is always the 0th field in each of java.lang's box classes.
// This lets UnboxPrimitive avoid searching for the field by name at runtime.
ScopedObjectAccess soa(Thread::Current());
ScopedNullHandle<mirror::ClassLoader> class_loader;
mirror::Class* c;
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Boolean;", class_loader);
EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Byte;", class_loader);
EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Character;", class_loader);
EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Double;", class_loader);
EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Float;", class_loader);
EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Integer;", class_loader);
EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Long;", class_loader);
EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Short;", class_loader);
EXPECT_STREQ("value", c->GetIFieldsPtr()->At(0).GetName());
}
TEST_F(ClassLinkerTest, TwoClassLoadersOneClass) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<2> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader_1(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
Handle<mirror::ClassLoader> class_loader_2(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("MyClass"))));
mirror::Class* MyClass_1 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_1);
mirror::Class* MyClass_2 = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_2);
EXPECT_TRUE(MyClass_1 != nullptr);
EXPECT_TRUE(MyClass_2 != nullptr);
EXPECT_NE(MyClass_1, MyClass_2);
}
TEST_F(ClassLinkerTest, StaticFields) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<2> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Statics"))));
Handle<mirror::Class> statics(
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
class_linker_->EnsureInitialized(soa.Self(), statics, true, true);
// Static final primitives that are initialized by a compile-time constant
// expression resolve to a copy of a constant value from the constant pool.
// So <clinit> should be null.
ArtMethod* clinit = statics->FindDirectMethod("<clinit>", "()V", sizeof(void*));
EXPECT_TRUE(clinit == nullptr);
EXPECT_EQ(9U, statics->NumStaticFields());
ArtField* s0 = mirror::Class::FindStaticField(soa.Self(), statics, "s0", "Z");
EXPECT_EQ(s0->GetTypeAsPrimitiveType(), Primitive::kPrimBoolean);
EXPECT_EQ(true, s0->GetBoolean(statics.Get()));
s0->SetBoolean<false>(statics.Get(), false);
ArtField* s1 = mirror::Class::FindStaticField(soa.Self(), statics, "s1", "B");
EXPECT_EQ(s1->GetTypeAsPrimitiveType(), Primitive::kPrimByte);
EXPECT_EQ(5, s1->GetByte(statics.Get()));
s1->SetByte<false>(statics.Get(), 6);
ArtField* s2 = mirror::Class::FindStaticField(soa.Self(), statics, "s2", "C");
EXPECT_EQ(s2->GetTypeAsPrimitiveType(), Primitive::kPrimChar);
EXPECT_EQ('a', s2->GetChar(statics.Get()));
s2->SetChar<false>(statics.Get(), 'b');
ArtField* s3 = mirror::Class::FindStaticField(soa.Self(), statics, "s3", "S");
EXPECT_EQ(s3->GetTypeAsPrimitiveType(), Primitive::kPrimShort);
EXPECT_EQ(-536, s3->GetShort(statics.Get()));
s3->SetShort<false>(statics.Get(), -535);
ArtField* s4 = mirror::Class::FindStaticField(soa.Self(), statics, "s4", "I");
EXPECT_EQ(s4->GetTypeAsPrimitiveType(), Primitive::kPrimInt);
EXPECT_EQ(2000000000, s4->GetInt(statics.Get()));
s4->SetInt<false>(statics.Get(), 2000000001);
ArtField* s5 = mirror::Class::FindStaticField(soa.Self(), statics, "s5", "J");
EXPECT_EQ(s5->GetTypeAsPrimitiveType(), Primitive::kPrimLong);
EXPECT_EQ(0x1234567890abcdefLL, s5->GetLong(statics.Get()));
s5->SetLong<false>(statics.Get(), INT64_C(0x34567890abcdef12));
ArtField* s6 = mirror::Class::FindStaticField(soa.Self(), statics, "s6", "F");
EXPECT_EQ(s6->GetTypeAsPrimitiveType(), Primitive::kPrimFloat);
EXPECT_DOUBLE_EQ(0.5, s6->GetFloat(statics.Get()));
s6->SetFloat<false>(statics.Get(), 0.75);
ArtField* s7 = mirror::Class::FindStaticField(soa.Self(), statics, "s7", "D");
EXPECT_EQ(s7->GetTypeAsPrimitiveType(), Primitive::kPrimDouble);
EXPECT_DOUBLE_EQ(16777217.0, s7->GetDouble(statics.Get()));
s7->SetDouble<false>(statics.Get(), 16777219);
ArtField* s8 = mirror::Class::FindStaticField(soa.Self(), statics, "s8",
"Ljava/lang/String;");
EXPECT_EQ(s8->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("android"));
s8->SetObject<false>(s8->GetDeclaringClass(),
mirror::String::AllocFromModifiedUtf8(soa.Self(), "robot"));
// TODO: Remove EXPECT_FALSE when GCC can handle EXPECT_EQ
// http://code.google.com/p/googletest/issues/detail?id=322
EXPECT_FALSE(s0->GetBoolean(statics.Get()));
EXPECT_EQ(6, s1->GetByte(statics.Get()));
EXPECT_EQ('b', s2->GetChar(statics.Get()));
EXPECT_EQ(-535, s3->GetShort(statics.Get()));
EXPECT_EQ(2000000001, s4->GetInt(statics.Get()));
EXPECT_EQ(INT64_C(0x34567890abcdef12), s5->GetLong(statics.Get()));
EXPECT_FLOAT_EQ(0.75, s6->GetFloat(statics.Get()));
EXPECT_DOUBLE_EQ(16777219.0, s7->GetDouble(statics.Get()));
EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("robot"));
}
TEST_F(ClassLinkerTest, Interfaces) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<6> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Interfaces"))));
Handle<mirror::Class> I(
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$I;", class_loader)));
Handle<mirror::Class> J(
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$J;", class_loader)));
Handle<mirror::Class> K(
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$K;", class_loader)));
Handle<mirror::Class> A(
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$A;", class_loader)));
Handle<mirror::Class> B(
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LInterfaces$B;", class_loader)));
EXPECT_TRUE(I->IsAssignableFrom(A.Get()));
EXPECT_TRUE(J->IsAssignableFrom(A.Get()));
EXPECT_TRUE(J->IsAssignableFrom(K.Get()));
EXPECT_TRUE(K->IsAssignableFrom(B.Get()));
EXPECT_TRUE(J->IsAssignableFrom(B.Get()));
const Signature void_sig = I->GetDexCache()->GetDexFile()->CreateSignature("()V");
ArtMethod* Ii = I->FindVirtualMethod("i", void_sig, sizeof(void*));
ArtMethod* Jj1 = J->FindVirtualMethod("j1", void_sig, sizeof(void*));
ArtMethod* Jj2 = J->FindVirtualMethod("j2", void_sig, sizeof(void*));
ArtMethod* Kj1 = K->FindInterfaceMethod("j1", void_sig, sizeof(void*));
ArtMethod* Kj2 = K->FindInterfaceMethod("j2", void_sig, sizeof(void*));
ArtMethod* Kk = K->FindInterfaceMethod("k", void_sig, sizeof(void*));
ArtMethod* Ai = A->FindVirtualMethod("i", void_sig, sizeof(void*));
ArtMethod* Aj1 = A->FindVirtualMethod("j1", void_sig, sizeof(void*));
ArtMethod* Aj2 = A->FindVirtualMethod("j2", void_sig, sizeof(void*));
ASSERT_TRUE(Ii != nullptr);
ASSERT_TRUE(Jj1 != nullptr);
ASSERT_TRUE(Jj2 != nullptr);
ASSERT_TRUE(Kj1 != nullptr);
ASSERT_TRUE(Kj2 != nullptr);
ASSERT_TRUE(Kk != nullptr);
ASSERT_TRUE(Ai != nullptr);
ASSERT_TRUE(Aj1 != nullptr);
ASSERT_TRUE(Aj2 != nullptr);
EXPECT_NE(Ii, Ai);
EXPECT_NE(Jj1, Aj1);
EXPECT_NE(Jj2, Aj2);
EXPECT_EQ(Kj1, Jj1);
EXPECT_EQ(Kj2, Jj2);
EXPECT_EQ(Ai, A->FindVirtualMethodForInterface(Ii, sizeof(void*)));
EXPECT_EQ(Aj1, A->FindVirtualMethodForInterface(Jj1, sizeof(void*)));
EXPECT_EQ(Aj2, A->FindVirtualMethodForInterface(Jj2, sizeof(void*)));
EXPECT_EQ(Ai, A->FindVirtualMethodForVirtualOrInterface(Ii, sizeof(void*)));
EXPECT_EQ(Aj1, A->FindVirtualMethodForVirtualOrInterface(Jj1, sizeof(void*)));
EXPECT_EQ(Aj2, A->FindVirtualMethodForVirtualOrInterface(Jj2, sizeof(void*)));
ArtField* Afoo = mirror::Class::FindStaticField(soa.Self(), A, "foo", "Ljava/lang/String;");
ArtField* Bfoo = mirror::Class::FindStaticField(soa.Self(), B, "foo", "Ljava/lang/String;");
ArtField* Jfoo = mirror::Class::FindStaticField(soa.Self(), J, "foo", "Ljava/lang/String;");
ArtField* Kfoo = mirror::Class::FindStaticField(soa.Self(), K, "foo", "Ljava/lang/String;");
ASSERT_TRUE(Afoo != nullptr);
EXPECT_EQ(Afoo, Bfoo);
EXPECT_EQ(Afoo, Jfoo);
EXPECT_EQ(Afoo, Kfoo);
}
TEST_F(ClassLinkerTest, ResolveVerifyAndClinit) {
// pretend we are trying to get the static storage for the StaticsFromCode class.
// case 1, get the uninitialized storage from StaticsFromCode.<clinit>
// case 2, get the initialized storage from StaticsFromCode.getS0
ScopedObjectAccess soa(Thread::Current());
jobject jclass_loader = LoadDex("StaticsFromCode");
const DexFile* dex_file = GetFirstDexFile(jclass_loader);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader)));
mirror::Class* klass = class_linker_->FindClass(soa.Self(), "LStaticsFromCode;", class_loader);
ArtMethod* clinit = klass->FindClassInitializer(sizeof(void*));
ArtMethod* getS0 = klass->FindDirectMethod("getS0", "()Ljava/lang/Object;", sizeof(void*));
const DexFile::TypeId* type_id = dex_file->FindTypeId("LStaticsFromCode;");
ASSERT_TRUE(type_id != nullptr);
uint32_t type_idx = dex_file->GetIndexForTypeId(*type_id);
mirror::Class* uninit = ResolveVerifyAndClinit(type_idx, clinit, soa.Self(), true, false);
EXPECT_TRUE(uninit != nullptr);
EXPECT_FALSE(uninit->IsInitialized());
mirror::Class* init = ResolveVerifyAndClinit(type_idx, getS0, soa.Self(), true, false);
EXPECT_TRUE(init != nullptr);
EXPECT_TRUE(init->IsInitialized());
}
TEST_F(ClassLinkerTest, FinalizableBit) {
ScopedObjectAccess soa(Thread::Current());
mirror::Class* c;
// Object has a finalize method, but we know it's empty.
c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
EXPECT_FALSE(c->IsFinalizable());
// Enum has a finalize method to prevent its subclasses from implementing one.
c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Enum;");
EXPECT_FALSE(c->IsFinalizable());
// RoundingMode is an enum.
c = class_linker_->FindSystemClass(soa.Self(), "Ljava/math/RoundingMode;");
EXPECT_FALSE(c->IsFinalizable());
// RandomAccessFile extends Object and overrides finalize.
c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/RandomAccessFile;");
EXPECT_TRUE(c->IsFinalizable());
// FileInputStream is finalizable and extends InputStream which isn't.
c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/InputStream;");
EXPECT_FALSE(c->IsFinalizable());
c = class_linker_->FindSystemClass(soa.Self(), "Ljava/io/FileInputStream;");
EXPECT_TRUE(c->IsFinalizable());
// ScheduledThreadPoolExecutor doesn't have a finalize method but
// extends ThreadPoolExecutor which does.
c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ThreadPoolExecutor;");
EXPECT_TRUE(c->IsFinalizable());
c = class_linker_->FindSystemClass(soa.Self(), "Ljava/util/concurrent/ScheduledThreadPoolExecutor;");
EXPECT_TRUE(c->IsFinalizable());
}
TEST_F(ClassLinkerTest, ClassRootDescriptors) {
ScopedObjectAccess soa(Thread::Current());
std::string temp;
for (int i = 0; i < ClassLinker::kClassRootsMax; i++) {
mirror::Class* klass = class_linker_->GetClassRoot(ClassLinker::ClassRoot(i));
EXPECT_GT(strlen(klass->GetDescriptor(&temp)), 0U);
EXPECT_STREQ(klass->GetDescriptor(&temp),
class_linker_->GetClassRootDescriptor(ClassLinker::ClassRoot(i))) << " i = " << i;
}
}
TEST_F(ClassLinkerTest, ValidatePredefinedClassSizes) {
ScopedObjectAccess soa(Thread::Current());
ScopedNullHandle<mirror::ClassLoader> class_loader;
mirror::Class* c;
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Class;", class_loader);
ASSERT_TRUE(c != nullptr);
EXPECT_EQ(c->GetClassSize(), mirror::Class::ClassClassSize(sizeof(void*)));
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Object;", class_loader);
ASSERT_TRUE(c != nullptr);
EXPECT_EQ(c->GetClassSize(), mirror::Object::ClassSize(sizeof(void*)));
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/String;", class_loader);
ASSERT_TRUE(c != nullptr);
EXPECT_EQ(c->GetClassSize(), mirror::String::ClassSize(sizeof(void*)));
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/DexCache;", class_loader);
ASSERT_TRUE(c != nullptr);
EXPECT_EQ(c->GetClassSize(), mirror::DexCache::ClassSize(sizeof(void*)));
}
static void CheckMethod(ArtMethod* method, bool verified)
SHARED_REQUIRES(Locks::mutator_lock_) {
if (!method->IsNative() && !method->IsAbstract()) {
EXPECT_EQ((method->GetAccessFlags() & kAccSkipAccessChecks) != 0U, verified)
<< PrettyMethod(method, true);
}
}
static void CheckVerificationAttempted(mirror::Class* c, bool preverified)
SHARED_REQUIRES(Locks::mutator_lock_) {
EXPECT_EQ((c->GetAccessFlags() & kAccVerificationAttempted) != 0U, preverified)
<< "Class " << PrettyClass(c) << " not as expected";
for (auto& m : c->GetMethods(sizeof(void*))) {
CheckMethod(&m, preverified);
}
}
TEST_F(ClassLinkerTest, Preverified_InitializedBoot) {
ScopedObjectAccess soa(Thread::Current());
mirror::Class* JavaLangObject = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;");
ASSERT_TRUE(JavaLangObject != nullptr);
EXPECT_TRUE(JavaLangObject->IsInitialized()) << "Not testing already initialized class from the "
"core";
CheckVerificationAttempted(JavaLangObject, true);
}
TEST_F(ClassLinkerTest, Preverified_UninitializedBoot) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<1> hs(soa.Self());
Handle<mirror::Class> security_manager(hs.NewHandle(class_linker_->FindSystemClass(
soa.Self(), "Ljava/lang/SecurityManager;")));
EXPECT_FALSE(security_manager->IsInitialized()) << "Not testing uninitialized class from the "
"core";
CheckVerificationAttempted(security_manager.Get(), false);
class_linker_->EnsureInitialized(soa.Self(), security_manager, true, true);
CheckVerificationAttempted(security_manager.Get(), true);
}
TEST_F(ClassLinkerTest, Preverified_App) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<2> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Statics"))));
Handle<mirror::Class> statics(
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
CheckVerificationAttempted(statics.Get(), false);
class_linker_->EnsureInitialized(soa.Self(), statics, true, true);
CheckVerificationAttempted(statics.Get(), true);
}
TEST_F(ClassLinkerTest, IsBootStrapClassLoaded) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<3> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("Statics"))));
// java.lang.Object is a bootstrap class.
Handle<mirror::Class> jlo_class(
hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;")));
ASSERT_TRUE(jlo_class.Get() != nullptr);
EXPECT_TRUE(jlo_class.Get()->IsBootStrapClassLoaded());
// Statics is not a bootstrap class.
Handle<mirror::Class> statics(
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
ASSERT_TRUE(statics.Get() != nullptr);
EXPECT_FALSE(statics.Get()->IsBootStrapClassLoaded());
}
// Regression test for b/26799552.
TEST_F(ClassLinkerTest, RegisterDexFileName) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<2> hs(soa.Self());
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
MutableHandle<mirror::DexCache> dex_cache(hs.NewHandle<mirror::DexCache>(nullptr));
{
ReaderMutexLock mu(soa.Self(), *class_linker->DexLock());
for (const ClassLinker::DexCacheData& data : class_linker->GetDexCachesData()) {
dex_cache.Assign(down_cast<mirror::DexCache*>(soa.Self()->DecodeJObject(data.weak_root)));
if (dex_cache.Get() != nullptr) {
break;
}
}
ASSERT_TRUE(dex_cache.Get() != nullptr);
}
// Make a copy of the dex cache and change the name.
dex_cache.Assign(dex_cache->Clone(soa.Self())->AsDexCache());
const uint16_t data[] = { 0x20AC, 0x20A1 };
Handle<mirror::String> location(hs.NewHandle(mirror::String::AllocFromUtf16(soa.Self(),
arraysize(data),
data)));
dex_cache->SetLocation(location.Get());
const DexFile* old_dex_file = dex_cache->GetDexFile();
std::unique_ptr<DexFile> dex_file(new DexFile(old_dex_file->Begin(),
old_dex_file->Size(),
location->ToModifiedUtf8(),
0u,
nullptr,
nullptr));
{
WriterMutexLock mu(soa.Self(), *class_linker->DexLock());
// Check that inserting with a UTF16 name works.
class_linker->RegisterDexFileLocked(*dex_file, dex_cache);
}
}
} // namespace art
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