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android / platform / art / 785c987bb1e66d6ddce662b61c0fbd094195b022 / . / runtime / class_linker_test.cc
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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 "android-base/strings.h"
#include "art_field-inl.h"
#include "art_method-inl.h"
#include "base/enums.h"
#include "class_linker-inl.h"
#include "class_root.h"
#include "common_runtime_test.h"
#include "dex/dex_file_types.h"
#include "dex/standard_dex_file.h"
#include "entrypoints/entrypoint_utils-inl.h"
#include "experimental_flags.h"
#include "gc/heap.h"
#include "handle_scope-inl.h"
#include "mirror/array-alloc-inl.h"
#include "mirror/accessible_object.h"
#include "mirror/call_site.h"
#include "mirror/class-inl.h"
#include "mirror/class_ext.h"
#include "mirror/dex_cache.h"
#include "mirror/emulated_stack_frame.h"
#include "mirror/executable.h"
#include "mirror/field.h"
#include "mirror/method_handle_impl.h"
#include "mirror/method_handles_lookup.h"
#include "mirror/method_type.h"
#include "mirror/object-inl.h"
#include "mirror/object_array-alloc-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 "mirror/var_handle.h"
#include "scoped_thread_state_change-inl.h"
#include "thread-current-inl.h"
namespace art {
class ClassLinkerTest : public CommonRuntimeTest {
protected:
void AssertNonExistentClass(const std::string& descriptor)
REQUIRES_SHARED(Locks::mutator_lock_) {
Thread* self = Thread::Current();
EXPECT_TRUE(class_linker_->FindSystemClass(self, descriptor.c_str()) == nullptr);
EXPECT_TRUE(self->IsExceptionPending());
StackHandleScope<1> hs(self);
Handle<mirror::Object> exception = hs.NewHandle<mirror::Object>(self->GetException());
self->ClearException();
ObjPtr<mirror::Class> exception_class =
class_linker_->FindSystemClass(self, "Ljava/lang/NoClassDefFoundError;");
EXPECT_TRUE(exception->InstanceOf(exception_class));
}
void AssertPrimitiveClass(const std::string& descriptor)
REQUIRES_SHARED(Locks::mutator_lock_) {
Thread* self = Thread::Current();
AssertPrimitiveClass(descriptor, class_linker_->FindSystemClass(self, descriptor.c_str()));
}
void AssertPrimitiveClass(const std::string& descriptor, ObjPtr<mirror::Class> primitive)
REQUIRES_SHARED(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(ClassStatus::kInitialized, primitive->GetStatus());
EXPECT_FALSE(primitive->IsErroneous());
EXPECT_TRUE(primitive->IsLoaded());
EXPECT_TRUE(primitive->IsResolved());
EXPECT_FALSE(primitive->IsErroneousResolved());
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(primitive->GetIfTable()->Count(), 0u);
EXPECT_EQ(kAccPublic | kAccFinal | kAccAbstract, primitive->GetAccessFlags());
}
void AssertObjectClass(ObjPtr<mirror::Class> JavaLangObject)
REQUIRES_SHARED(Locks::mutator_lock_) {
ASSERT_TRUE(JavaLangObject != nullptr);
ASSERT_TRUE(JavaLangObject->GetClass() != nullptr);
ASSERT_EQ(JavaLangObject->GetClass(),
JavaLangObject->GetClass()->GetClass());
EXPECT_OBJ_PTR_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(ClassStatus::kInitialized, JavaLangObject->GetStatus());
EXPECT_FALSE(JavaLangObject->IsErroneous());
EXPECT_TRUE(JavaLangObject->IsLoaded());
EXPECT_TRUE(JavaLangObject->IsResolved());
EXPECT_FALSE(JavaLangObject->IsErroneousResolved());
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(4U, 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());
PointerSize 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,
ObjPtr<mirror::ClassLoader> class_loader)
REQUIRES_SHARED(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_OBJ_PTR_EQ(loader.Get(), 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)
REQUIRES_SHARED(Locks::mutator_lock_) {
ASSERT_TRUE(array != 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_OBJ_PTR_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(ClassStatus::kInitialized, array->GetStatus());
EXPECT_FALSE(array->IsErroneous());
EXPECT_TRUE(array->IsLoaded());
EXPECT_TRUE(array->IsResolved());
EXPECT_FALSE(array->IsErroneousResolved());
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);
ObjPtr<mirror::Class> direct_interface0 =
mirror::Class::GetDirectInterface(self, array.Get(), 0);
EXPECT_TRUE(direct_interface0 != nullptr);
EXPECT_STREQ(direct_interface0->GetDescriptor(&temp), "Ljava/lang/Cloneable;");
ObjPtr<mirror::Class> direct_interface1 =
mirror::Class::GetDirectInterface(self, array.Get(), 1);
EXPECT_STREQ(direct_interface1->GetDescriptor(&temp), "Ljava/io/Serializable;");
EXPECT_OBJ_PTR_EQ(class_linker_->FindArrayClass(self, array->GetComponentType()), array.Get());
PointerSize pointer_size = class_linker_->GetImagePointerSize();
ObjPtr<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) REQUIRES_SHARED(Locks::mutator_lock_) {
EXPECT_TRUE(method != nullptr);
EXPECT_TRUE(method->GetDeclaringClass() != nullptr);
EXPECT_TRUE(method->GetName() != nullptr);
EXPECT_TRUE(method->GetSignature() != Signature::NoSignature());
}
void AssertField(ObjPtr<mirror::Class> klass, ArtField* field)
REQUIRES_SHARED(Locks::mutator_lock_) {
EXPECT_TRUE(field != nullptr);
EXPECT_OBJ_PTR_EQ(klass, field->GetDeclaringClass());
EXPECT_TRUE(field->GetName() != nullptr);
EXPECT_TRUE(field->ResolveType() != nullptr);
}
void AssertClass(const std::string& descriptor, Handle<mirror::Class> klass)
REQUIRES_SHARED(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->IsErroneousResolved());
EXPECT_FALSE(klass->IsErroneous());
EXPECT_FALSE(klass->IsArrayClass());
EXPECT_TRUE(klass->GetComponentType() == nullptr);
EXPECT_TRUE(klass->IsInSamePackage(klass.Get()));
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(kRuntimePointerSize)) {
EXPECT_TRUE(m.IsStatic());
EXPECT_TRUE(m.IsDirect());
}
} else {
if (!klass->IsSynthetic()) {
EXPECT_NE(0U, klass->NumDirectMethods());
}
}
EXPECT_EQ(klass->IsInterface(), !klass->HasVTable());
ObjPtr<mirror::IfTable> iftable = klass->GetIfTable();
for (int i = 0; i < klass->GetIfTableCount(); i++) {
ObjPtr<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(kRuntimePointerSize)) {
AssertMethod(&method);
EXPECT_TRUE(method.IsDirect());
EXPECT_OBJ_PTR_EQ(klass.Get(), method.GetDeclaringClass());
}
for (ArtMethod& method : klass->GetDeclaredVirtualMethods(kRuntimePointerSize)) {
AssertMethod(&method);
EXPECT_FALSE(method.IsDirect());
EXPECT_OBJ_PTR_EQ(klass.Get(), method.GetDeclaringClass());
}
for (ArtMethod& method : klass->GetCopiedMethods(kRuntimePointerSize)) {
AssertMethod(&method);
EXPECT_FALSE(method.IsDirect());
EXPECT_TRUE(method.IsCopied());
EXPECT_TRUE(method.GetDeclaringClass()->IsInterface())
<< "declaring class: " << method.GetDeclaringClass()->PrettyClass();
EXPECT_TRUE(method.GetDeclaringClass()->IsAssignableFrom(klass.Get()))
<< "declaring class: " << method.GetDeclaringClass()->PrettyClass();
}
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);
ObjPtr<mirror::Class> field_type = field->ResolveType();
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(field->PrettyField(), "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;
ObjPtr<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(ObjPtr<mirror::ClassLoader> class_loader, const std::string& descriptor)
REQUIRES_SHARED(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 != nullptr);
std::string temp;
EXPECT_STREQ(descriptor.c_str(), klass->GetDescriptor(&temp));
EXPECT_OBJ_PTR_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, ObjPtr<mirror::ClassLoader> class_loader)
REQUIRES_SHARED(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(dex::TypeIndex(i));
const char* descriptor = dex.GetTypeDescriptor(type_id);
AssertDexFileClass(class_loader, descriptor);
}
TestRootVisitor visitor;
class_linker_->VisitRoots(&visitor, kVisitRootFlagAllRoots);
}
class TestRootVisitor : public SingleRootVisitor {
public:
void VisitRoot(mirror::Object* root, const RootInfo& info ATTRIBUTE_UNUSED) override {
EXPECT_TRUE(root != nullptr);
}
};
};
class ClassLinkerMethodHandlesTest : public ClassLinkerTest {
protected:
void SetUpRuntimeOptions(RuntimeOptions* options) override {
CommonRuntimeTest::SetUpRuntimeOptions(options);
}
};
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() REQUIRES_SHARED(Locks::mutator_lock_) {
Thread* self = Thread::Current();
ObjPtr<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, 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_class_def_idx_), "dexClassDefIndex");
addOffset(OFFSETOF_MEMBER(mirror::Class, dex_type_idx_), "dexTypeIndex");
addOffset(OFFSETOF_MEMBER(mirror::Class, ext_data_), "extData");
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, object_size_alloc_fast_path_),
"objectSizeAllocFastPath");
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, virtual_methods_offset_), "virtualMethodsOffset");
addOffset(OFFSETOF_MEMBER(mirror::Class, vtable_), "vtable");
}
};
struct ClassExtOffsets : public CheckOffsets<mirror::ClassExt> {
ClassExtOffsets() : CheckOffsets<mirror::ClassExt>(false, "Ldalvik/system/ClassExt;") {
addOffset(OFFSETOF_MEMBER(mirror::ClassExt, obsolete_dex_caches_), "obsoleteDexCaches");
addOffset(OFFSETOF_MEMBER(mirror::ClassExt, obsolete_methods_), "obsoleteMethods");
addOffset(OFFSETOF_MEMBER(mirror::ClassExt, original_dex_file_), "originalDexFile");
addOffset(OFFSETOF_MEMBER(mirror::ClassExt, pre_redefine_class_def_index_),
"preRedefineClassDefIndex");
addOffset(OFFSETOF_MEMBER(mirror::ClassExt, pre_redefine_dex_file_ptr_),
"preRedefineDexFilePtr");
addOffset(OFFSETOF_MEMBER(mirror::ClassExt, verify_error_), "verifyError");
}
};
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_file_), "dexFile");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, location_), "location");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_preresolved_strings_), "numPreResolvedStrings");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_call_sites_), "numResolvedCallSites");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_fields_), "numResolvedFields");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, num_resolved_method_types_), "numResolvedMethodTypes");
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, preresolved_strings_), "preResolvedStrings");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_call_sites_), "resolvedCallSites");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_fields_), "resolvedFields");
addOffset(OFFSETOF_MEMBER(mirror::DexCache, resolved_method_types_), "resolvedMethodTypes");
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 ExecutableOffsets : public CheckOffsets<mirror::Executable> {
ExecutableOffsets() : CheckOffsets<mirror::Executable>(
false, "Ljava/lang/reflect/Executable;") {
addOffset(OFFSETOF_MEMBER(mirror::Executable, access_flags_), "accessFlags");
addOffset(OFFSETOF_MEMBER(mirror::Executable, art_method_), "artMethod");
addOffset(OFFSETOF_MEMBER(mirror::Executable, declaring_class_), "declaringClass");
addOffset(OFFSETOF_MEMBER(mirror::Executable, declaring_class_of_overridden_method_),
"declaringClassOfOverriddenMethod");
addOffset(OFFSETOF_MEMBER(mirror::Executable, dex_method_index_), "dexMethodIndex");
addOffset(OFFSETOF_MEMBER(mirror::Executable, has_real_parameter_data_),
"hasRealParameterData");
addOffset(OFFSETOF_MEMBER(mirror::Executable, parameters_), "parameters");
}
};
struct MethodTypeOffsets : public CheckOffsets<mirror::MethodType> {
MethodTypeOffsets() : CheckOffsets<mirror::MethodType>(
false, "Ljava/lang/invoke/MethodType;") {
addOffset(OFFSETOF_MEMBER(mirror::MethodType, form_), "form");
addOffset(OFFSETOF_MEMBER(mirror::MethodType, method_descriptor_), "methodDescriptor");
addOffset(OFFSETOF_MEMBER(mirror::MethodType, p_types_), "ptypes");
addOffset(OFFSETOF_MEMBER(mirror::MethodType, r_type_), "rtype");
addOffset(OFFSETOF_MEMBER(mirror::MethodType, wrap_alt_), "wrapAlt");
}
};
struct MethodHandleOffsets : public CheckOffsets<mirror::MethodHandle> {
MethodHandleOffsets() : CheckOffsets<mirror::MethodHandle>(
false, "Ljava/lang/invoke/MethodHandle;") {
addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, art_field_or_method_), "artFieldOrMethod");
addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, cached_spread_invoker_),
"cachedSpreadInvoker");
addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, handle_kind_), "handleKind");
addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, nominal_type_), "nominalType");
addOffset(OFFSETOF_MEMBER(mirror::MethodHandle, method_type_), "type");
}
};
struct MethodHandleImplOffsets : public CheckOffsets<mirror::MethodHandleImpl> {
MethodHandleImplOffsets() : CheckOffsets<mirror::MethodHandleImpl>(
false, "Ljava/lang/invoke/MethodHandleImpl;") {
addOffset(OFFSETOF_MEMBER(mirror::MethodHandleImpl, info_), "info");
}
};
struct MethodHandlesLookupOffsets : public CheckOffsets<mirror::MethodHandlesLookup> {
MethodHandlesLookupOffsets() : CheckOffsets<mirror::MethodHandlesLookup>(
false, "Ljava/lang/invoke/MethodHandles$Lookup;") {
addOffset(OFFSETOF_MEMBER(mirror::MethodHandlesLookup, allowed_modes_), "allowedModes");
addOffset(OFFSETOF_MEMBER(mirror::MethodHandlesLookup, lookup_class_), "lookupClass");
}
};
struct EmulatedStackFrameOffsets : public CheckOffsets<mirror::EmulatedStackFrame> {
EmulatedStackFrameOffsets() : CheckOffsets<mirror::EmulatedStackFrame>(
false, "Ldalvik/system/EmulatedStackFrame;") {
addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, callsite_type_), "callsiteType");
addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, references_), "references");
addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, stack_frame_), "stackFrame");
addOffset(OFFSETOF_MEMBER(mirror::EmulatedStackFrame, type_), "type");
}
};
struct CallSiteOffsets : public CheckOffsets<mirror::CallSite> {
CallSiteOffsets() : CheckOffsets<mirror::CallSite>(
false, "Ljava/lang/invoke/CallSite;") {
addOffset(OFFSETOF_MEMBER(mirror::CallSite, target_), "target");
}
};
struct VarHandleOffsets : public CheckOffsets<mirror::VarHandle> {
VarHandleOffsets() : CheckOffsets<mirror::VarHandle>(
false, "Ljava/lang/invoke/VarHandle;") {
addOffset(OFFSETOF_MEMBER(mirror::VarHandle, access_modes_bit_mask_), "accessModesBitMask");
addOffset(OFFSETOF_MEMBER(mirror::VarHandle, coordinate_type0_), "coordinateType0");
addOffset(OFFSETOF_MEMBER(mirror::VarHandle, coordinate_type1_), "coordinateType1");
addOffset(OFFSETOF_MEMBER(mirror::VarHandle, var_type_), "varType");
}
};
struct FieldVarHandleOffsets : public CheckOffsets<mirror::FieldVarHandle> {
FieldVarHandleOffsets() : CheckOffsets<mirror::FieldVarHandle>(
false, "Ljava/lang/invoke/FieldVarHandle;") {
addOffset(OFFSETOF_MEMBER(mirror::FieldVarHandle, art_field_), "artField");
}
};
struct ArrayElementVarHandleOffsets : public CheckOffsets<mirror::ArrayElementVarHandle> {
ArrayElementVarHandleOffsets() : CheckOffsets<mirror::ArrayElementVarHandle>(
false, "Ljava/lang/invoke/ArrayElementVarHandle;") {
}
};
struct ByteArrayViewVarHandleOffsets : public CheckOffsets<mirror::ByteArrayViewVarHandle> {
ByteArrayViewVarHandleOffsets() : CheckOffsets<mirror::ByteArrayViewVarHandle>(
false, "Ljava/lang/invoke/ByteArrayViewVarHandle;") {
addOffset(OFFSETOF_MEMBER(mirror::ByteArrayViewVarHandle, native_byte_order_),
"nativeByteOrder");
}
};
struct ByteBufferViewVarHandleOffsets : public CheckOffsets<mirror::ByteBufferViewVarHandle> {
ByteBufferViewVarHandleOffsets() : CheckOffsets<mirror::ByteBufferViewVarHandle>(
false, "Ljava/lang/invoke/ByteBufferViewVarHandle;") {
addOffset(OFFSETOF_MEMBER(mirror::ByteBufferViewVarHandle, native_byte_order_),
"nativeByteOrder");
}
};
// 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(ClassExtOffsets().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(ExecutableOffsets().Check());
EXPECT_TRUE(MethodTypeOffsets().Check());
EXPECT_TRUE(MethodHandleOffsets().Check());
EXPECT_TRUE(MethodHandleImplOffsets().Check());
EXPECT_TRUE(MethodHandlesLookupOffsets().Check());
EXPECT_TRUE(EmulatedStackFrameOffsets().Check());
EXPECT_TRUE(CallSiteOffsets().Check());
EXPECT_TRUE(VarHandleOffsets().Check());
EXPECT_TRUE(FieldVarHandleOffsets().Check());
EXPECT_TRUE(ArrayElementVarHandleOffsets().Check());
EXPECT_TRUE(ByteArrayViewVarHandleOffsets().Check());
EXPECT_TRUE(ByteBufferViewVarHandleOffsets().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(android::base::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(android::base::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"))));
ObjPtr<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());
ObjPtr<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());
StackHandleScope<2> hs(soa.Self());
Handle<mirror::Class> JavaLangObject = hs.NewHandle(
class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"));
AssertObjectClass(JavaLangObject.Get());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
AssertNonExistentClass("LMyClass;");
ObjPtr<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_OBJ_PTR_EQ(JavaLangObject.Get(), MyClass->GetClass()->GetSuperClass());
std::string temp;
ASSERT_STREQ(MyClass->GetDescriptor(&temp), "LMyClass;");
EXPECT_OBJ_PTR_EQ(MyClass->GetSuperClass(), JavaLangObject.Get());
EXPECT_TRUE(MyClass->HasSuperClass());
EXPECT_OBJ_PTR_EQ(class_loader.Get(), MyClass->GetClassLoader());
EXPECT_EQ(ClassStatus::kResolved, MyClass->GetStatus());
EXPECT_FALSE(MyClass->IsErroneous());
EXPECT_TRUE(MyClass->IsLoaded());
EXPECT_TRUE(MyClass->IsResolved());
EXPECT_FALSE(MyClass->IsErroneousResolved());
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, LookupResolvedType) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MyClass"))));
AssertNonExistentClass("LMyClass;");
ObjPtr<mirror::Class> klass = class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader);
dex::TypeIndex type_idx = klass->GetClassDef()->class_idx_;
ObjPtr<mirror::DexCache> dex_cache = klass->GetDexCache();
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(type_idx, dex_cache, class_loader.Get()),
klass);
// Zero out the resolved type and make sure LookupResolvedType still finds it.
dex_cache->ClearResolvedType(type_idx);
EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(type_idx, dex_cache, class_loader.Get()),
klass);
}
TEST_F(ClassLinkerTest, LookupResolvedTypeArray) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<2> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("AllFields"))));
// Get the AllFields class for the dex cache and dex file.
ObjPtr<mirror::Class> all_fields_klass
= class_linker_->FindClass(soa.Self(), "LAllFields;", class_loader);
ASSERT_OBJ_PTR_NE(all_fields_klass, ObjPtr<mirror::Class>(nullptr));
Handle<mirror::DexCache> dex_cache = hs.NewHandle(all_fields_klass->GetDexCache());
const DexFile& dex_file = *dex_cache->GetDexFile();
// Get the index of the array class we want to test.
const DexFile::TypeId* array_id = dex_file.FindTypeId("[Ljava/lang/Object;");
ASSERT_TRUE(array_id != nullptr);
dex::TypeIndex array_idx = dex_file.GetIndexForTypeId(*array_id);
// Check that the array class wasn't resolved yet.
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()),
ObjPtr<mirror::Class>(nullptr));
// Resolve the array class we want to test.
ObjPtr<mirror::Class> array_klass
= class_linker_->FindClass(soa.Self(), "[Ljava/lang/Object;", class_loader);
ASSERT_OBJ_PTR_NE(array_klass, ObjPtr<mirror::Class>(nullptr));
// Test that LookupResolvedType() finds the array class.
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()),
array_klass);
// Zero out the resolved type and make sure LookupResolvedType() still finds it.
dex_cache->ClearResolvedType(array_idx);
EXPECT_TRUE(dex_cache->GetResolvedType(array_idx) == nullptr);
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(array_idx, dex_cache.Get(), class_loader.Get()),
array_klass);
}
TEST_F(ClassLinkerTest, LookupResolvedTypeErroneousInit) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<3> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("ErroneousInit"))));
AssertNonExistentClass("LErroneousInit;");
Handle<mirror::Class> klass =
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LErroneousInit;", class_loader));
ASSERT_OBJ_PTR_NE(klass.Get(), ObjPtr<mirror::Class>(nullptr));
dex::TypeIndex type_idx = klass->GetClassDef()->class_idx_;
Handle<mirror::DexCache> dex_cache = hs.NewHandle(klass->GetDexCache());
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
klass.Get());
// Zero out the resolved type and make sure LookupResolvedType still finds it.
dex_cache->ClearResolvedType(type_idx);
EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
klass.Get());
// Force initialization to turn the class erroneous.
bool initialized = class_linker_->EnsureInitialized(soa.Self(),
klass,
/* can_init_fields= */ true,
/* can_init_parents= */ true);
EXPECT_FALSE(initialized);
EXPECT_TRUE(soa.Self()->IsExceptionPending());
soa.Self()->ClearException();
// Check that the LookupResolvedType() can still find the resolved type.
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
klass.Get());
// Zero out the resolved type and make sure LookupResolvedType() still finds it.
dex_cache->ClearResolvedType(type_idx);
EXPECT_TRUE(dex_cache->GetResolvedType(type_idx) == nullptr);
EXPECT_OBJ_PTR_EQ(
class_linker_->LookupResolvedType(type_idx, dex_cache.Get(), class_loader.Get()),
klass.Get());
}
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());
ObjPtr<mirror::Class> array_class =
class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
ObjPtr<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_OBJ_PTR_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_OBJ_PTR_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_OBJ_PTR_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_OBJ_PTR_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_OBJ_PTR_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;
ObjPtr<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<3> 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"))));
Handle<mirror::Class> MyClass_1 = hs.NewHandle(
class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_1));
ObjPtr<mirror::Class> MyClass_2 =
class_linker_->FindClass(soa.Self(), "LMyClass;", class_loader_2);
EXPECT_TRUE(MyClass_1 != nullptr);
EXPECT_TRUE(MyClass_2 != nullptr);
EXPECT_OBJ_PTR_NE(MyClass_1.Get(), 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->FindClassMethod("<clinit>", "()V", kRuntimePointerSize);
EXPECT_TRUE(clinit == nullptr);
EXPECT_EQ(9U, statics->NumStaticFields());
ArtField* s0 = mirror::Class::FindStaticField(soa.Self(), statics.Get(), "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.Get(), "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.Get(), "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.Get(), "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.Get(), "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.Get(), "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.Get(), "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.Get(), "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.Get(), "s8", "Ljava/lang/String;");
EXPECT_EQ(s8->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
EXPECT_TRUE(s8->GetObject(statics.Get())->AsString()->Equals("android"));
ObjPtr<mirror::String> str_value = mirror::String::AllocFromModifiedUtf8(soa.Self(), "robot");
s8->SetObject<false>(s8->GetDeclaringClass(), str_value);
// 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->FindClassMethod("i", void_sig, kRuntimePointerSize);
ArtMethod* Jj1 = J->FindClassMethod("j1", void_sig, kRuntimePointerSize);
ArtMethod* Jj2 = J->FindClassMethod("j2", void_sig, kRuntimePointerSize);
ArtMethod* Kj1 = K->FindInterfaceMethod("j1", void_sig, kRuntimePointerSize);
ArtMethod* Kj2 = K->FindInterfaceMethod("j2", void_sig, kRuntimePointerSize);
ArtMethod* Kk = K->FindInterfaceMethod("k", void_sig, kRuntimePointerSize);
ArtMethod* Ai = A->FindClassMethod("i", void_sig, kRuntimePointerSize);
ArtMethod* Aj1 = A->FindClassMethod("j1", void_sig, kRuntimePointerSize);
ArtMethod* Aj2 = A->FindClassMethod("j2", void_sig, kRuntimePointerSize);
ASSERT_TRUE(Ii != nullptr);
ASSERT_FALSE(Ii->IsDirect());
ASSERT_TRUE(Jj1 != nullptr);
ASSERT_FALSE(Jj1->IsDirect());
ASSERT_TRUE(Jj2 != nullptr);
ASSERT_FALSE(Jj2->IsDirect());
ASSERT_TRUE(Kj1 != nullptr);
ASSERT_TRUE(Kj2 != nullptr);
ASSERT_TRUE(Kk != nullptr);
ASSERT_TRUE(Ai != nullptr);
ASSERT_FALSE(Ai->IsDirect());
ASSERT_TRUE(Aj1 != nullptr);
ASSERT_FALSE(Aj1->IsDirect());
ASSERT_TRUE(Aj2 != nullptr);
ASSERT_FALSE(Aj2->IsDirect());
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, kRuntimePointerSize));
EXPECT_EQ(Aj1, A->FindVirtualMethodForInterface(Jj1, kRuntimePointerSize));
EXPECT_EQ(Aj2, A->FindVirtualMethodForInterface(Jj2, kRuntimePointerSize));
EXPECT_EQ(Ai, A->FindVirtualMethodForVirtualOrInterface(Ii, kRuntimePointerSize));
EXPECT_EQ(Aj1, A->FindVirtualMethodForVirtualOrInterface(Jj1, kRuntimePointerSize));
EXPECT_EQ(Aj2, A->FindVirtualMethodForVirtualOrInterface(Jj2, kRuntimePointerSize));
ArtField* Afoo =
mirror::Class::FindStaticField(soa.Self(), A.Get(), "foo", "Ljava/lang/String;");
ArtField* Bfoo =
mirror::Class::FindStaticField(soa.Self(), B.Get(), "foo", "Ljava/lang/String;");
ArtField* Jfoo =
mirror::Class::FindStaticField(soa.Self(), J.Get(), "foo", "Ljava/lang/String;");
ArtField* Kfoo =
mirror::Class::FindStaticField(soa.Self(), K.Get(), "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)));
ObjPtr<mirror::Class> klass =
class_linker_->FindClass(soa.Self(), "LStaticsFromCode;", class_loader);
ArtMethod* clinit = klass->FindClassInitializer(kRuntimePointerSize);
ArtMethod* getS0 =
klass->FindClassMethod("getS0", "()Ljava/lang/Object;", kRuntimePointerSize);
ASSERT_TRUE(getS0 != nullptr);
ASSERT_TRUE(getS0->IsStatic());
const DexFile::TypeId* type_id = dex_file->FindTypeId("LStaticsFromCode;");
ASSERT_TRUE(type_id != nullptr);
dex::TypeIndex type_idx = dex_file->GetIndexForTypeId(*type_id);
ObjPtr<mirror::Class> uninit = ResolveVerifyAndClinit(type_idx,
clinit,
soa.Self(),
/* can_run_clinit= */ true,
/* verify_access= */ false);
EXPECT_TRUE(uninit != nullptr);
EXPECT_FALSE(uninit->IsInitialized());
ObjPtr<mirror::Class> init = ResolveVerifyAndClinit(type_idx,
getS0,
soa.Self(),
/* can_run_clinit= */ true,
/* verify_access= */ false);
EXPECT_TRUE(init != nullptr);
EXPECT_TRUE(init->IsInitialized());
}
TEST_F(ClassLinkerTest, ErroneousClass) {
ScopedObjectAccess soa(Thread::Current());
jobject jclass_loader = LoadMultiDex("ErroneousA", "ErroneousB");
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader>(jclass_loader)));
hs.Self()->AssertNoPendingException();
const char* descriptor = "LErroneous;";
ObjPtr<mirror::Class> klass = class_linker_->FindClass(soa.Self(), descriptor, class_loader);
// Erronenous since we are extending final class.
hs.Self()->AssertPendingException();
EXPECT_TRUE(klass == nullptr);
klass = class_linker_->LookupClass(soa.Self(), descriptor, class_loader.Get());
EXPECT_FALSE(klass == nullptr);
EXPECT_TRUE(klass->IsErroneous());
EXPECT_TRUE(klass->GetIfTable() != nullptr);
}
TEST_F(ClassLinkerTest, FinalizableBit) {
ScopedObjectAccess soa(Thread::Current());
ObjPtr<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 (size_t i = 0; i < static_cast<size_t>(ClassRoot::kMax); i++) {
ObjPtr<mirror::Class> klass = GetClassRoot(ClassRoot(i), class_linker_);
EXPECT_GT(strlen(klass->GetDescriptor(&temp)), 0U);
EXPECT_STREQ(klass->GetDescriptor(&temp), GetClassRootDescriptor(ClassRoot(i))) << " i = " << i;
}
}
TEST_F(ClassLinkerTest, ValidatePredefinedClassSizes) {
ScopedObjectAccess soa(Thread::Current());
ScopedNullHandle<mirror::ClassLoader> class_loader;
ObjPtr<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(kRuntimePointerSize));
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/Object;", class_loader);
ASSERT_TRUE(c != nullptr);
EXPECT_EQ(c->GetClassSize(), mirror::Object::ClassSize(kRuntimePointerSize));
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/String;", class_loader);
ASSERT_TRUE(c != nullptr);
EXPECT_EQ(c->GetClassSize(), mirror::String::ClassSize(kRuntimePointerSize));
c = class_linker_->FindClass(soa.Self(), "Ljava/lang/DexCache;", class_loader);
ASSERT_TRUE(c != nullptr);
EXPECT_EQ(c->GetClassSize(), mirror::DexCache::ClassSize(kRuntimePointerSize));
}
static void CheckMethod(ArtMethod* method, bool verified)
REQUIRES_SHARED(Locks::mutator_lock_) {
if (!method->IsNative() && !method->IsAbstract()) {
EXPECT_EQ((method->GetAccessFlags() & kAccSkipAccessChecks) != 0U, verified)
<< method->PrettyMethod(true);
}
}
static void CheckVerificationAttempted(ObjPtr<mirror::Class> c, bool preverified)
REQUIRES_SHARED(Locks::mutator_lock_) {
EXPECT_EQ((c->GetAccessFlags() & kAccVerificationAttempted) != 0U, preverified)
<< "Class " << mirror::Class::PrettyClass(c) << " not as expected";
for (auto& m : c->GetMethods(kRuntimePointerSize)) {
CheckMethod(&m, preverified);
}
}
TEST_F(ClassLinkerTest, Preverified_InitializedBoot) {
ScopedObjectAccess soa(Thread::Current());
ObjPtr<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 != nullptr);
EXPECT_TRUE(jlo_class->IsBootStrapClassLoaded());
// Statics is not a bootstrap class.
Handle<mirror::Class> statics(
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStatics;", class_loader)));
ASSERT_TRUE(statics != nullptr);
EXPECT_FALSE(statics->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(), *Locks::dex_lock_);
for (const ClassLinker::DexCacheData& data : class_linker->GetDexCachesData()) {
dex_cache.Assign(soa.Self()->DecodeJObject(data.weak_root)->AsDexCache());
if (dex_cache != nullptr) {
break;
}
}
ASSERT_TRUE(dex_cache != 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 StandardDexFile(old_dex_file->Begin(),
old_dex_file->Size(),
location->ToModifiedUtf8(),
0u,
nullptr,
nullptr));
{
WriterMutexLock mu(soa.Self(), *Locks::dex_lock_);
// Check that inserting with a UTF16 name works.
class_linker->RegisterDexFileLocked(*dex_file, dex_cache.Get(), /* class_loader= */ nullptr);
}
}
TEST_F(ClassLinkerMethodHandlesTest, TestResolveMethodTypes) {
ScopedObjectAccess soa(Thread::Current());
StackHandleScope<7> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("MethodTypes"))));
Handle<mirror::Class> method_types(
hs.NewHandle(class_linker_->FindClass(soa.Self(), "LMethodTypes;", class_loader)));
class_linker_->EnsureInitialized(soa.Self(), method_types, true, true);
ArtMethod* method1 = method_types->FindClassMethod(
"method1",
"(Ljava/lang/String;)Ljava/lang/String;",
kRuntimePointerSize);
ASSERT_TRUE(method1 != nullptr);
ASSERT_FALSE(method1->IsDirect());
const DexFile& dex_file = *(method1->GetDexFile());
Handle<mirror::DexCache> dex_cache = hs.NewHandle(
class_linker_->FindDexCache(soa.Self(), dex_file));
const DexFile::MethodId& method1_id = dex_file.GetMethodId(method1->GetDexMethodIndex());
// This is the MethodType corresponding to the prototype of
// String MethodTypes# method1(String).
// Its RType = Ljava/lang/String;
// Its PTypes = { Ljava/lang/String; }
Handle<mirror::MethodType> method1_type = hs.NewHandle(
class_linker_->ResolveMethodType(soa.Self(), method1_id.proto_idx_, dex_cache, class_loader));
// Assert that the method type was resolved successfully.
ASSERT_TRUE(method1_type != nullptr);
// Assert that the return type and the method arguments are as we expect.
Handle<mirror::Class> string_class(hs.NewHandle(class_linker_->FindClass(soa.Self(),
"Ljava/lang/String;",
class_loader)));
ASSERT_OBJ_PTR_EQ(string_class.Get(), method1_type->GetRType());
ASSERT_OBJ_PTR_EQ(string_class.Get(), method1_type->GetPTypes()->Get(0));
// Resolve the method type again and assert that we get back the same value.
Handle<mirror::MethodType> method1_type2 = hs.NewHandle(
class_linker_->ResolveMethodType(soa.Self(), method1_id.proto_idx_, dex_cache, class_loader));
ASSERT_OBJ_PTR_EQ(method1_type.Get(), method1_type2.Get());
// Resolve the MethodType associated with a different method signature
// and assert it's different.
ArtMethod* method2 = method_types->FindClassMethod(
"method2",
"(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
kRuntimePointerSize);
ASSERT_TRUE(method2 != nullptr);
ASSERT_FALSE(method2->IsDirect());
const DexFile::MethodId& method2_id = dex_file.GetMethodId(method2->GetDexMethodIndex());
Handle<mirror::MethodType> method2_type = hs.NewHandle(
class_linker_->ResolveMethodType(soa.Self(), method2_id.proto_idx_, dex_cache, class_loader));
ASSERT_OBJ_PTR_NE(method1_type.Get(), method2_type.Get());
}
// Verify that ClassLinker's CreateWellknownClassLoader works as expected
// by creating a chain of class loaders with various dex files.
TEST_F(ClassLinkerTest, CreateWellKnownClassLoader) {
// LoadDexIn*ClassLoader methods already assert that the parent loader is the expected one.
// No need to check again.
jobject class_loader_a = LoadDexInPathClassLoader("MyClass", nullptr);
jobject class_loader_b = LoadDexInDelegateLastClassLoader("Nested", class_loader_a);
jobject class_loader_c = LoadDexInPathClassLoader("MultiDex", class_loader_b);
LoadDexInDelegateLastClassLoader("Interfaces", class_loader_c);
}
TEST_F(ClassLinkerTest, PrettyClass) {
ScopedObjectAccess soa(Thread::Current());
EXPECT_EQ("null", mirror::Class::PrettyClass(nullptr));
ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
ASSERT_TRUE(c != nullptr);
ObjPtr<mirror::Object> o = mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), c, 0);
EXPECT_EQ("java.lang.Class<java.lang.String[]>", mirror::Class::PrettyClass(o->GetClass()));
}
TEST_F(ClassLinkerTest, PrettyClassAndClassLoader) {
ScopedObjectAccess soa(Thread::Current());
EXPECT_EQ("null", mirror::Class::PrettyClassAndClassLoader(nullptr));
ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
ASSERT_TRUE(c != nullptr);
ObjPtr<mirror::Object> o = mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), c, 0);
EXPECT_EQ("java.lang.Class<java.lang.String[],null>",
mirror::Class::PrettyClassAndClassLoader(o->GetClass()));
}
TEST_F(ClassLinkerTest, PrettyField) {
ScopedObjectAccess soa(Thread::Current());
EXPECT_EQ("null", ArtField::PrettyField(nullptr));
ObjPtr<mirror::Class> java_lang_String = class_linker_->FindSystemClass(soa.Self(),
"Ljava/lang/String;");
ArtField* f;
f = java_lang_String->FindDeclaredInstanceField("count", "I");
EXPECT_EQ("int java.lang.String.count", f->PrettyField());
EXPECT_EQ("java.lang.String.count", f->PrettyField(false));
}
TEST_F(ClassLinkerTest, JniShortName_JniLongName) {
ScopedObjectAccess soa(Thread::Current());
ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/String;");
ASSERT_TRUE(c != nullptr);
ArtMethod* m;
m = c->FindClassMethod("charAt", "(I)C", kRuntimePointerSize);
ASSERT_TRUE(m != nullptr);
ASSERT_FALSE(m->IsDirect());
EXPECT_EQ("Java_java_lang_String_charAt", m->JniShortName());
EXPECT_EQ("Java_java_lang_String_charAt__I", m->JniLongName());
m = c->FindClassMethod("indexOf", "(Ljava/lang/String;I)I", kRuntimePointerSize);
ASSERT_TRUE(m != nullptr);
ASSERT_FALSE(m->IsDirect());
EXPECT_EQ("Java_java_lang_String_indexOf", m->JniShortName());
EXPECT_EQ("Java_java_lang_String_indexOf__Ljava_lang_String_2I", m->JniLongName());
m = c->FindClassMethod("copyValueOf", "([CII)Ljava/lang/String;", kRuntimePointerSize);
ASSERT_TRUE(m != nullptr);
ASSERT_TRUE(m->IsStatic());
EXPECT_EQ("Java_java_lang_String_copyValueOf", m->JniShortName());
EXPECT_EQ("Java_java_lang_String_copyValueOf___3CII", m->JniLongName());
}
class ClassLinkerClassLoaderTest : public ClassLinkerTest {
protected:
// Verifies that the class identified by the given descriptor is loaded with
// the expected_class_loader_obj when search from class_loader_to_search_obj.
// When expected_class_loader_obj is null the check will be done against BootClassLoader.
void VerifyClassResolution(const std::string& descriptor,
jobject class_loader_to_search_obj,
jobject expected_class_loader_obj,
bool should_find = true) {
Thread* self = Thread::Current();
ScopedObjectAccess soa(self);
StackHandleScope<3> hs(self);
Handle<mirror::ClassLoader> class_loader_to_search(
hs.NewHandle(soa.Decode<mirror::ClassLoader>(class_loader_to_search_obj)));
Handle<mirror::Class> klass = hs.NewHandle(
class_linker_->FindClass(soa.Self(), descriptor.c_str(), class_loader_to_search));
if (!should_find) {
if (self->IsExceptionPending()) {
self->ClearException();
}
ASSERT_TRUE(klass == nullptr);
} else if (expected_class_loader_obj == nullptr) {
ASSERT_TRUE(ClassLinker::IsBootClassLoader(soa, klass->GetClassLoader()));
} else {
ASSERT_TRUE(klass != nullptr) << descriptor;
Handle<mirror::ClassLoader> expected_class_loader(
hs.NewHandle(soa.Decode<mirror::ClassLoader>(expected_class_loader_obj)));
ASSERT_OBJ_PTR_EQ(klass->GetClassLoader(), expected_class_loader.Get());
}
}
};
TEST_F(ClassLinkerClassLoaderTest, CreatePathClassLoader) {
jobject class_loader_a = LoadDexInPathClassLoader("ForClassLoaderA", nullptr);
VerifyClassResolution("LDefinedInA;", class_loader_a, class_loader_a);
VerifyClassResolution("Ljava/lang/String;", class_loader_a, nullptr);
VerifyClassResolution("LDefinedInB;", class_loader_a, nullptr, /*should_find=*/ false);
}
TEST_F(ClassLinkerClassLoaderTest, CreateDelegateLastClassLoader) {
jobject class_loader_a = LoadDexInDelegateLastClassLoader("ForClassLoaderA", nullptr);
VerifyClassResolution("LDefinedInA;", class_loader_a, class_loader_a);
VerifyClassResolution("Ljava/lang/String;", class_loader_a, nullptr);
VerifyClassResolution("LDefinedInB;", class_loader_a, nullptr, /*should_find=*/ false);
}
TEST_F(ClassLinkerClassLoaderTest, CreateClassLoaderChain) {
// The chain is
// ClassLoaderA (PathClassLoader, defines: A, AB, AC, AD)
// ^
// |
// ClassLoaderB (DelegateLastClassLoader, defines: B, AB, BC, BD)
// ^
// |
// ClassLoaderC (PathClassLoader, defines: C, AC, BC, CD)
// ^
// |
// ClassLoaderD (DelegateLastClassLoader, defines: D, AD, BD, CD)
jobject class_loader_a = LoadDexInPathClassLoader("ForClassLoaderA", nullptr);
jobject class_loader_b = LoadDexInDelegateLastClassLoader("ForClassLoaderB", class_loader_a);
jobject class_loader_c = LoadDexInPathClassLoader("ForClassLoaderC", class_loader_b);
jobject class_loader_d = LoadDexInDelegateLastClassLoader("ForClassLoaderD", class_loader_c);
// Verify exclusive classes (present in only one class loader).
VerifyClassResolution("LDefinedInD;", class_loader_d, class_loader_d);
VerifyClassResolution("LDefinedInC;", class_loader_d, class_loader_c);
VerifyClassResolution("LDefinedInB;", class_loader_d, class_loader_b);
VerifyClassResolution("LDefinedInA;", class_loader_d, class_loader_a);
// Verify classes that are defined in multiple classloader.
// Classes defined in B should be found in B even if they are defined in A or C because
// B is a DelegateLastClassLoader.
VerifyClassResolution("LDefinedInAB;", class_loader_d, class_loader_b);
VerifyClassResolution("LDefinedInABC;", class_loader_d, class_loader_b);
VerifyClassResolution("LDefinedInBC;", class_loader_d, class_loader_b);
// Classes defined in D should be found in D even if they are defined in parent class loaders
// as well because D is a DelegateLastClassLoader.
VerifyClassResolution("LDefinedInAD;", class_loader_d, class_loader_d);
VerifyClassResolution("LDefinedInBD;", class_loader_d, class_loader_d);
VerifyClassResolution("LDefinedInCD;", class_loader_d, class_loader_d);
// Classes not defined in the DelegateLastClassLoaders (i.e. D or B) should be found
// in the top parent.
VerifyClassResolution("LDefinedInAC;", class_loader_d, class_loader_a);
// Sanity check that we don't find an undefined class.
VerifyClassResolution("LNotDefined;", class_loader_d, nullptr, /*should_find=*/ false);
}
} // namespace art