blob: 342599e17403f2db90fc6660812b22fc96b36949 [file] [log] [blame]
// Copyright 2011 Google Inc. All Rights Reserved.
#include "object.h"
#include <string.h>
#include <algorithm>
#include <iostream>
#include <string>
#include <utility>
#include "class_linker.h"
#include "class_loader.h"
#include "dex_cache.h"
#include "dex_file.h"
#include "globals.h"
#include "heap.h"
#include "intern_table.h"
#include "logging.h"
#include "monitor.h"
#include "runtime.h"
#include "stack.h"
namespace art {
Object* Object::Clone() {
Class* c = GetClass();
DCHECK(!c->IsClassClass());
// Object::SizeOf gets the right size even if we're an array.
// Using c->AllocObject() here would be wrong.
size_t num_bytes = SizeOf();
Object* copy = Heap::AllocObject(c, num_bytes);
if (copy == NULL) {
return NULL;
}
// Copy instance data. We assume memcpy copies by words.
// TODO: expose and use move32.
byte* src_bytes = reinterpret_cast<byte*>(this);
byte* dst_bytes = reinterpret_cast<byte*>(copy);
size_t offset = sizeof(Object);
memcpy(dst_bytes + offset, src_bytes + offset, num_bytes - offset);
if (c->IsFinalizable()) {
Heap::AddFinalizerReference(copy);
}
return copy;
}
uint32_t Object::GetLockOwner() {
return Monitor::GetLockOwner(monitor_);
}
bool Object::IsString() const {
// TODO use "klass_ == String::GetJavaLangString()" instead?
return GetClass() == GetClass()->GetDescriptor()->GetClass();
}
void Object::MonitorEnter(Thread* thread) {
Monitor::MonitorEnter(thread, this);
}
bool Object::MonitorExit(Thread* thread) {
return Monitor::MonitorExit(thread, this);
}
void Object::Notify() {
Monitor::Notify(Thread::Current(), this);
}
void Object::NotifyAll() {
Monitor::NotifyAll(Thread::Current(), this);
}
void Object::Wait(int64_t ms, int32_t ns) {
Monitor::Wait(Thread::Current(), this, ms, ns, true);
}
// TODO: get global references for these
Class* Field::java_lang_reflect_Field_ = NULL;
void Field::SetClass(Class* java_lang_reflect_Field) {
CHECK(java_lang_reflect_Field_ == NULL);
CHECK(java_lang_reflect_Field != NULL);
java_lang_reflect_Field_ = java_lang_reflect_Field;
}
void Field::ResetClass() {
CHECK(java_lang_reflect_Field_ != NULL);
java_lang_reflect_Field_ = NULL;
}
void Field::SetTypeIdx(uint32_t type_idx) {
SetField32(OFFSET_OF_OBJECT_MEMBER(Field, type_idx_), type_idx, false);
}
Class* Field::GetTypeDuringLinking() const {
// We are assured that the necessary primitive types are in the dex cache
// early during class linking
return GetDeclaringClass()->GetDexCache()->GetResolvedType(GetTypeIdx());
}
Class* Field::GetType() const {
if (type_ == NULL) {
type_ = Runtime::Current()->GetClassLinker()->ResolveType(GetTypeIdx(), this);
}
return type_;
}
void Field::InitJavaFields() {
Thread* self = Thread::Current();
ScopedThreadStateChange tsc(self, Thread::kRunnable);
MonitorEnter(self);
if (type_ == NULL) {
InitJavaFieldsLocked();
}
MonitorExit(self);
}
void Field::InitJavaFieldsLocked() {
GetType(); // Sets type_ as a side-effect. May throw.
}
Field* Field::FindInstanceFieldFromCode(uint32_t field_idx, const Method* referrer) {
return FindFieldFromCode(field_idx, referrer, false);
}
Field* Field::FindStaticFieldFromCode(uint32_t field_idx, const Method* referrer) {
return FindFieldFromCode(field_idx, referrer, true);
}
Field* Field::FindFieldFromCode(uint32_t field_idx, const Method* referrer, bool is_static) {
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
Field* f = class_linker->ResolveField(field_idx, referrer, is_static);
if (f != NULL) {
Class* c = f->GetDeclaringClass();
// If the class is already initializing, we must be inside <clinit>, or
// we'd still be waiting for the lock.
if (c->GetStatus() == Class::kStatusInitializing || class_linker->EnsureInitialized(c, true)) {
return f;
}
}
UNIMPLEMENTED(FATAL) << "throw an error and unwind";
return NULL;
}
uint32_t Field::Get32StaticFromCode(uint32_t field_idx, const Method* referrer) {
Field* field = FindStaticFieldFromCode(field_idx, referrer);
DCHECK(field->GetType()->PrimitiveSize() == sizeof(int32_t));
return field->Get32(NULL);
}
void Field::Set32StaticFromCode(uint32_t field_idx, const Method* referrer, uint32_t new_value) {
Field* field = FindStaticFieldFromCode(field_idx, referrer);
DCHECK(field->GetType()->PrimitiveSize() == sizeof(int32_t));
field->Set32(NULL, new_value);
}
uint64_t Field::Get64StaticFromCode(uint32_t field_idx, const Method* referrer) {
Field* field = FindStaticFieldFromCode(field_idx, referrer);
DCHECK(field->GetType()->PrimitiveSize() == sizeof(int64_t));
return field->Get64(NULL);
}
void Field::Set64StaticFromCode(uint32_t field_idx, const Method* referrer, uint64_t new_value) {
Field* field = FindStaticFieldFromCode(field_idx, referrer);
DCHECK(field->GetType()->PrimitiveSize() == sizeof(int64_t));
field->Set64(NULL, new_value);
}
Object* Field::GetObjStaticFromCode(uint32_t field_idx, const Method* referrer) {
Field* field = FindStaticFieldFromCode(field_idx, referrer);
DCHECK(!field->GetType()->IsPrimitive());
return field->GetObj(NULL);
}
void Field::SetObjStaticFromCode(uint32_t field_idx, const Method* referrer, Object* new_value) {
Field* field = FindStaticFieldFromCode(field_idx, referrer);
DCHECK(!field->GetType()->IsPrimitive());
field->SetObj(NULL, new_value);
}
uint32_t Field::Get32(const Object* object) const {
CHECK((object == NULL) == IsStatic());
if (IsStatic()) {
object = declaring_class_;
}
return object->GetField32(GetOffset(), IsVolatile());
}
void Field::Set32(Object* object, uint32_t new_value) const {
CHECK((object == NULL) == IsStatic());
if (IsStatic()) {
object = declaring_class_;
}
object->SetField32(GetOffset(), new_value, IsVolatile());
}
uint64_t Field::Get64(const Object* object) const {
CHECK((object == NULL) == IsStatic());
if (IsStatic()) {
object = declaring_class_;
}
return object->GetField64(GetOffset(), IsVolatile());
}
void Field::Set64(Object* object, uint64_t new_value) const {
CHECK((object == NULL) == IsStatic());
if (IsStatic()) {
object = declaring_class_;
}
object->SetField64(GetOffset(), new_value, IsVolatile());
}
Object* Field::GetObj(const Object* object) const {
CHECK((object == NULL) == IsStatic());
if (IsStatic()) {
object = declaring_class_;
}
return object->GetFieldObject<Object*>(GetOffset(), IsVolatile());
}
void Field::SetObj(Object* object, const Object* new_value) const {
CHECK((object == NULL) == IsStatic());
if (IsStatic()) {
object = declaring_class_;
}
object->SetFieldObject(GetOffset(), new_value, IsVolatile());
}
bool Field::GetBoolean(const Object* object) const {
DCHECK(GetType()->IsPrimitiveBoolean());
return Get32(object);
}
void Field::SetBoolean(Object* object, bool z) const {
DCHECK(GetType()->IsPrimitiveBoolean());
Set32(object, z);
}
int8_t Field::GetByte(const Object* object) const {
DCHECK(GetType()->IsPrimitiveByte());
return Get32(object);
}
void Field::SetByte(Object* object, int8_t b) const {
DCHECK(GetType()->IsPrimitiveByte());
Set32(object, b);
}
uint16_t Field::GetChar(const Object* object) const {
DCHECK(GetType()->IsPrimitiveChar());
return Get32(object);
}
void Field::SetChar(Object* object, uint16_t c) const {
DCHECK(GetType()->IsPrimitiveChar());
Set32(object, c);
}
uint16_t Field::GetShort(const Object* object) const {
DCHECK(GetType()->IsPrimitiveShort());
return Get32(object);
}
void Field::SetShort(Object* object, uint16_t s) const {
DCHECK(GetType()->IsPrimitiveShort());
Set32(object, s);
}
int32_t Field::GetInt(const Object* object) const {
DCHECK(GetType()->IsPrimitiveInt());
return Get32(object);
}
void Field::SetInt(Object* object, int32_t i) const {
DCHECK(GetType()->IsPrimitiveInt()) << PrettyField(this);
Set32(object, i);
}
int64_t Field::GetLong(const Object* object) const {
DCHECK(GetType()->IsPrimitiveLong());
return Get64(object);
}
void Field::SetLong(Object* object, int64_t j) const {
DCHECK(GetType()->IsPrimitiveLong());
Set64(object, j);
}
float Field::GetFloat(const Object* object) const {
DCHECK(GetType()->IsPrimitiveFloat());
JValue float_bits;
float_bits.i = Get32(object);
return float_bits.f;
}
void Field::SetFloat(Object* object, float f) const {
DCHECK(GetType()->IsPrimitiveFloat());
JValue float_bits;
float_bits.f = f;
Set32(object, float_bits.i);
}
double Field::GetDouble(const Object* object) const {
DCHECK(GetType()->IsPrimitiveDouble());
JValue double_bits;
double_bits.j = Get64(object);
return double_bits.d;
}
void Field::SetDouble(Object* object, double d) const {
DCHECK(GetType()->IsPrimitiveDouble());
JValue double_bits;
double_bits.d = d;
Set64(object, double_bits.j);
}
Object* Field::GetObject(const Object* object) const {
CHECK(!GetType()->IsPrimitive());
return GetObj(object);
}
void Field::SetObject(Object* object, const Object* l) const {
CHECK(!GetType()->IsPrimitive());
SetObj(object, l);
}
// TODO: get global references for these
Class* Method::java_lang_reflect_Constructor_ = NULL;
Class* Method::java_lang_reflect_Method_ = NULL;
void Method::SetClasses(Class* java_lang_reflect_Constructor, Class* java_lang_reflect_Method) {
CHECK(java_lang_reflect_Constructor_ == NULL);
CHECK(java_lang_reflect_Constructor != NULL);
java_lang_reflect_Constructor_ = java_lang_reflect_Constructor;
CHECK(java_lang_reflect_Method_ == NULL);
CHECK(java_lang_reflect_Method != NULL);
java_lang_reflect_Method_ = java_lang_reflect_Method;
}
void Method::ResetClasses() {
CHECK(java_lang_reflect_Constructor_ != NULL);
java_lang_reflect_Constructor_ = NULL;
CHECK(java_lang_reflect_Method_ != NULL);
java_lang_reflect_Method_ = NULL;
}
Class* ExtractNextClassFromSignature(ClassLinker* class_linker, const ClassLoader* cl, const char*& p) {
if (*p == '[') {
// Something like "[[[Ljava/lang/String;".
const char* start = p;
while (*p == '[') {
++p;
}
if (*p == 'L') {
while (*p != ';') {
++p;
}
}
++p; // Either the ';' or the primitive type.
StringPiece descriptor(start, (p - start));
return class_linker->FindClass(descriptor, cl);
} else if (*p == 'L') {
const char* start = p;
while (*p != ';') {
++p;
}
++p;
StringPiece descriptor(start, (p - start));
return class_linker->FindClass(descriptor, cl);
} else {
return class_linker->FindPrimitiveClass(*p++);
}
}
void Method::InitJavaFieldsLocked() {
// Create the array.
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
size_t arg_count = GetShorty()->GetLength() - 1;
Class* array_class = class_linker->FindSystemClass("[Ljava/lang/Class;");
ObjectArray<Class>* parameters = ObjectArray<Class>::Alloc(array_class, arg_count);
if (parameters == NULL) {
return;
}
// Parse the signature, filling the array.
const ClassLoader* cl = GetDeclaringClass()->GetClassLoader();
std::string signature(GetSignature()->ToModifiedUtf8());
const char* p = signature.c_str();
DCHECK_EQ(*p, '(');
++p;
for (size_t i = 0; i < arg_count; ++i) {
Class* c = ExtractNextClassFromSignature(class_linker, cl, p);
if (c == NULL) {
return;
}
parameters->Set(i, c);
}
DCHECK_EQ(*p, ')');
++p;
java_parameter_types_ = parameters;
java_return_type_ = ExtractNextClassFromSignature(class_linker, cl, p);
}
void Method::InitJavaFields() {
Thread* self = Thread::Current();
ScopedThreadStateChange tsc(self, Thread::kRunnable);
MonitorEnter(self);
if (java_parameter_types_ == NULL || java_return_type_ == NULL) {
InitJavaFieldsLocked();
}
MonitorExit(self);
}
ObjectArray<String>* Method::GetDexCacheStrings() const {
return GetFieldObject<ObjectArray<String>*>(
OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_strings_), false);
}
void Method::SetReturnTypeIdx(uint32_t new_return_type_idx) {
SetField32(OFFSET_OF_OBJECT_MEMBER(Method, java_return_type_idx_),
new_return_type_idx, false);
}
Class* Method::GetReturnType() const {
DCHECK(GetDeclaringClass()->IsResolved() || GetDeclaringClass()->IsErroneous());
// Short-cut
Class* result = GetDexCacheResolvedTypes()->Get(GetReturnTypeIdx());
if (result == NULL) {
// Do full linkage and set cache value for next call
result = Runtime::Current()->GetClassLinker()->ResolveType(GetReturnTypeIdx(), this);
}
CHECK(result != NULL) << PrettyMethod(this);
return result;
}
void Method::SetDexCacheStrings(ObjectArray<String>* new_dex_cache_strings) {
SetFieldObject(OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_strings_),
new_dex_cache_strings, false);
}
ObjectArray<Class>* Method::GetDexCacheResolvedTypes() const {
return GetFieldObject<ObjectArray<Class>*>(
OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_resolved_types_), false);
}
void Method::SetDexCacheResolvedTypes(ObjectArray<Class>* new_dex_cache_classes) {
SetFieldObject(OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_resolved_types_),
new_dex_cache_classes, false);
}
ObjectArray<Method>* Method::GetDexCacheResolvedMethods() const {
return GetFieldObject<ObjectArray<Method>*>(
OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_resolved_methods_), false);
}
void Method::SetDexCacheResolvedMethods(ObjectArray<Method>* new_dex_cache_methods) {
SetFieldObject(OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_resolved_methods_),
new_dex_cache_methods, false);
}
ObjectArray<Field>* Method::GetDexCacheResolvedFields() const {
return GetFieldObject<ObjectArray<Field>*>(
OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_resolved_fields_), false);
}
void Method::SetDexCacheResolvedFields(ObjectArray<Field>* new_dex_cache_fields) {
SetFieldObject(OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_resolved_fields_),
new_dex_cache_fields, false);
}
CodeAndDirectMethods* Method::GetDexCacheCodeAndDirectMethods() const {
return GetFieldPtr<CodeAndDirectMethods*>(
OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_code_and_direct_methods_),
false);
}
void Method::SetDexCacheCodeAndDirectMethods(CodeAndDirectMethods* new_value) {
SetFieldPtr<CodeAndDirectMethods*>(
OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_code_and_direct_methods_),
new_value, false);
}
ObjectArray<StaticStorageBase>* Method::GetDexCacheInitializedStaticStorage() const {
return GetFieldObject<ObjectArray<StaticStorageBase>*>(
OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_initialized_static_storage_),
false);
}
void Method::SetDexCacheInitializedStaticStorage(ObjectArray<StaticStorageBase>* new_value) {
SetFieldObject(
OFFSET_OF_OBJECT_MEMBER(Method, dex_cache_initialized_static_storage_),
new_value, false);
}
size_t Method::NumArgRegisters(const StringPiece& shorty) {
CHECK_LE(1, shorty.length());
uint32_t num_registers = 0;
for (int i = 1; i < shorty.length(); ++i) {
char ch = shorty[i];
if (ch == 'D' || ch == 'J') {
num_registers += 2;
} else {
num_registers += 1;
}
}
return num_registers;
}
size_t Method::NumArgArrayBytes() const {
const String* shorty = GetShorty();
size_t num_bytes = 0;
for (int i = 1; i < shorty->GetLength(); ++i) {
char ch = shorty->CharAt(i);
if (ch == 'D' || ch == 'J') {
num_bytes += 8;
} else if (ch == 'L') {
// Argument is a reference or an array. The shorty descriptor
// does not distinguish between these types.
num_bytes += sizeof(Object*);
} else {
num_bytes += 4;
}
}
return num_bytes;
}
size_t Method::NumArgs() const {
// "1 +" because the first in Args is the receiver.
// "- 1" because we don't count the return type.
return (IsStatic() ? 0 : 1) + GetShorty()->GetLength() - 1;
}
// The number of reference arguments to this method including implicit this
// pointer
size_t Method::NumReferenceArgs() const {
const String* shorty = GetShorty();
size_t result = IsStatic() ? 0 : 1; // The implicit this pointer.
for (int i = 1; i < shorty->GetLength(); i++) {
char ch = shorty->CharAt(i);
if ((ch == 'L') || (ch == '[')) {
result++;
}
}
return result;
}
// The number of long or double arguments
size_t Method::NumLongOrDoubleArgs() const {
const String* shorty = GetShorty();
size_t result = 0;
for (int i = 1; i < shorty->GetLength(); i++) {
char ch = shorty->CharAt(i);
if ((ch == 'D') || (ch == 'J')) {
result++;
}
}
return result;
}
// Is the given method parameter a reference?
bool Method::IsParamAReference(unsigned int param) const {
CHECK_LT(param, NumArgs());
if (IsStatic()) {
param++; // 0th argument must skip return value at start of the shorty
} else if (param == 0) {
return true; // this argument
}
return GetShorty()->CharAt(param) == 'L';
}
// Is the given method parameter a long or double?
bool Method::IsParamALongOrDouble(unsigned int param) const {
CHECK_LT(param, NumArgs());
if (IsStatic()) {
param++; // 0th argument must skip return value at start of the shorty
} else if (param == 0) {
return false; // this argument
}
char ch = GetShorty()->CharAt(param);
return (ch == 'J' || ch == 'D');
}
static size_t ShortyCharToSize(char x) {
switch (x) {
case 'V': return 0;
case '[': return kPointerSize;
case 'L': return kPointerSize;
case 'D': return 8;
case 'J': return 8;
default: return 4;
}
}
size_t Method::ParamSize(unsigned int param) const {
CHECK_LT(param, NumArgs());
if (IsStatic()) {
param++; // 0th argument must skip return value at start of the shorty
} else if (param == 0) {
return kPointerSize; // this argument
}
return ShortyCharToSize(GetShorty()->CharAt(param));
}
size_t Method::ReturnSize() const {
return ShortyCharToSize(GetShorty()->CharAt(0));
}
bool Method::HasSameNameAndDescriptor(const Method* that) const {
return (this->GetName()->Equals(that->GetName()) &&
this->GetSignature()->Equals(that->GetSignature()));
}
uint32_t Method::ToDexPC(const uintptr_t pc) const {
IntArray* mapping_table = GetMappingTable();
if (mapping_table == NULL) {
DCHECK(IsNative());
return DexFile::kDexNoIndex; // Special no mapping case
}
size_t mapping_table_length = mapping_table->GetLength();
uint32_t sought_offset = pc - reinterpret_cast<uintptr_t>(GetCode());
if (GetCodeArray() != NULL) {
CHECK_LT(sought_offset, static_cast<uint32_t>(GetCodeArray()->GetLength()));
}
uint32_t best_offset = 0;
uint32_t best_dex_offset = 0;
for (size_t i = 0; i < mapping_table_length; i += 2) {
uint32_t map_offset = mapping_table->Get(i);
uint32_t map_dex_offset = mapping_table->Get(i + 1);
if (map_offset == sought_offset) {
best_offset = map_offset;
best_dex_offset = map_dex_offset;
break;
}
if (map_offset < sought_offset && map_offset > best_offset) {
best_offset = map_offset;
best_dex_offset = map_dex_offset;
}
}
return best_dex_offset;
}
uintptr_t Method::ToNativePC(const uint32_t dex_pc) const {
IntArray* mapping_table = GetMappingTable();
if (mapping_table == NULL) {
DCHECK(dex_pc == 0);
return 0; // Special no mapping/pc == 0 case
}
size_t mapping_table_length = mapping_table->GetLength();
for (size_t i = 0; i < mapping_table_length; i += 2) {
uint32_t map_offset = mapping_table->Get(i);
uint32_t map_dex_offset = mapping_table->Get(i + 1);
if (map_dex_offset == dex_pc) {
if (GetCodeArray() != NULL) {
DCHECK_LT(map_offset, static_cast<uint32_t>(GetCodeArray()->GetLength()));
}
return reinterpret_cast<uintptr_t>(GetCode()) + map_offset;
}
}
LOG(FATAL) << "Looking up Dex PC not contained in method";
return 0;
}
uint32_t Method::FindCatchBlock(Class* exception_type, uint32_t dex_pc) const {
DexCache* dex_cache = GetDeclaringClass()->GetDexCache();
const ClassLoader* class_loader = GetDeclaringClass()->GetClassLoader();
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
const DexFile& dex_file = class_linker->FindDexFile(dex_cache);
const DexFile::CodeItem* code_item = dex_file.GetCodeItem(GetCodeItemOffset());
// Iterate over the catch handlers associated with dex_pc
for (DexFile::CatchHandlerIterator iter = dex_file.dexFindCatchHandler(*code_item, dex_pc);
!iter.HasNext(); iter.Next()) {
uint32_t iter_type_idx = iter.Get().type_idx_;
// Catch all case
if (iter_type_idx == DexFile::kDexNoIndex) {
return iter.Get().address_;
}
// Does this catch exception type apply?
Class* iter_exception_type =
class_linker->ResolveType(dex_file, iter_type_idx, dex_cache, class_loader);
if (iter_exception_type->IsAssignableFrom(exception_type)) {
return iter.Get().address_;
}
}
// Handler not found
return DexFile::kDexNoIndex;
}
void Method::SetCodeArray(ByteArray* code_array, InstructionSet instruction_set) {
// TODO: restore this check or warning when compile time code storage is moved out of Method
// CHECK(GetCode() == NULL || IsNative()) << PrettyMethod(this);
// if (GetCode() != NULL && !IsNative()) {
// LOG(WARNING) << "Calling SetCode more than once for " << PrettyMethod(this);
// }
SetFieldPtr<ByteArray*>(OFFSET_OF_OBJECT_MEMBER(Method, code_array_), code_array, false);
void* code;
if (code_array != NULL) {
code = code_array->GetData();
if (instruction_set == kThumb2) {
uintptr_t address = reinterpret_cast<uintptr_t>(code);
// Set the low-order bit so a BLX will switch to Thumb mode
address |= 0x1;
code = reinterpret_cast<void*>(address);
}
} else {
code = NULL;
}
SetCode(code);
}
bool Method::IsWithinCode(uintptr_t pc) const {
if (pc == 0) {
// PC of 0 represents the beginning of a stack trace either a native or where we have a callee
// save method that has no code
DCHECK(IsNative() || IsPhony());
return true;
} else {
#if defined(__arm__)
pc &= ~0x1; // clear any possible thumb instruction mode bit
#endif
if (GetCodeArray() == NULL) {
return true;
}
uint32_t rel_offset = pc - reinterpret_cast<uintptr_t>(GetCodeArray()->GetData());
// Strictly the following test should be a less-than, however, if the last
// instruction is a call to an exception throw we may see return addresses
// that are 1 beyond the end of code.
return rel_offset <= static_cast<uint32_t>(GetCodeArray()->GetLength());
}
}
void Method::SetInvokeStub(const ByteArray* invoke_stub_array) {
const InvokeStub* invoke_stub = reinterpret_cast<InvokeStub*>(invoke_stub_array->GetData());
SetFieldPtr<const ByteArray*>(
OFFSET_OF_OBJECT_MEMBER(Method, invoke_stub_array_), invoke_stub_array, false);
SetFieldPtr<const InvokeStub*>(
OFFSET_OF_OBJECT_MEMBER(Method, invoke_stub_), invoke_stub, false);
}
void Method::Invoke(Thread* self, Object* receiver, byte* args, JValue* result) const {
// Push a transition back into managed code onto the linked list in thread.
CHECK_EQ(Thread::kRunnable, self->GetState());
NativeToManagedRecord record;
self->PushNativeToManagedRecord(&record);
// Call the invoke stub associated with the method.
// Pass everything as arguments.
const Method::InvokeStub* stub = GetInvokeStub();
bool have_executable_code = (GetCode() != NULL);
#if !defined(__arm__)
// Currently we can only compile non-native methods for ARM.
have_executable_code = IsNative();
#endif
if (have_executable_code && stub != NULL) {
LOG(INFO) << "invoking " << PrettyMethod(this) << " code=" << (void*) GetCode() << " stub=" << (void*) stub;
(*stub)(this, receiver, self, args, result);
LOG(INFO) << "returned " << PrettyMethod(this) << " code=" << (void*) GetCode() << " stub=" << (void*) stub;
} else {
if (Runtime::Current()->IsStarted()) {
LOG(WARNING) << "Not invoking method with no associated code: " << PrettyMethod(this);
}
if (result != NULL) {
result->j = 0;
}
}
// Pop transition.
self->PopNativeToManagedRecord(record);
}
bool Method::IsRegistered() {
void* native_method = GetFieldPtr<void*>(OFFSET_OF_OBJECT_MEMBER(Method, native_method_), false);
void* jni_stub = Runtime::Current()->GetJniStubArray()->GetData();
return native_method != jni_stub;
}
void Method::RegisterNative(const void* native_method) {
CHECK(IsNative());
CHECK(native_method != NULL);
SetFieldPtr<const void*>(OFFSET_OF_OBJECT_MEMBER(Method, native_method_),
native_method, false);
}
void Method::UnregisterNative() {
CHECK(IsNative());
// restore stub to lookup native pointer via dlsym
RegisterNative(Runtime::Current()->GetJniStubArray()->GetData());
}
void Class::SetStatus(Status new_status) {
CHECK(new_status > GetStatus() || new_status == kStatusError || !Runtime::Current()->IsStarted())
<< PrettyClass(this) << " " << GetStatus() << " -> " << new_status;
CHECK(sizeof(Status) == sizeof(uint32_t)) << PrettyClass(this);
return SetField32(OFFSET_OF_OBJECT_MEMBER(Class, status_), new_status, false);
}
DexCache* Class::GetDexCache() const {
return GetFieldObject<DexCache*>(OFFSET_OF_OBJECT_MEMBER(Class, dex_cache_), false);
}
void Class::SetDexCache(DexCache* new_dex_cache) {
SetFieldObject(OFFSET_OF_OBJECT_MEMBER(Class, dex_cache_), new_dex_cache, false);
}
Object* Class::AllocObject() {
DCHECK(!IsAbstract()) << PrettyClass(this);
DCHECK(!IsInterface()) << PrettyClass(this);
DCHECK(!IsPrimitive()) << PrettyClass(this);
DCHECK(!Runtime::Current()->IsStarted() || IsInitializing()) << PrettyClass(this);
return Heap::AllocObject(this, this->object_size_);
}
void Class::DumpClass(std::ostream& os, int flags) const {
if ((flags & kDumpClassFullDetail) == 0) {
os << PrettyClass(this);
if ((flags & kDumpClassClassLoader) != 0) {
os << ' ' << GetClassLoader();
}
if ((flags & kDumpClassInitialized) != 0) {
os << ' ' << GetStatus();
}
os << std::endl;
return;
}
Class* super = GetSuperClass();
os << "----- " << (IsInterface() ? "interface" : "class") << " "
<< "'" << GetDescriptor()->ToModifiedUtf8() << "' cl=" << GetClassLoader() << " -----\n",
os << " objectSize=" << SizeOf() << " "
<< "(" << (super != NULL ? super->SizeOf() : -1) << " from super)\n",
os << StringPrintf(" access=0x%04x.%04x\n",
GetAccessFlags() >> 16, GetAccessFlags() & kAccJavaFlagsMask);
if (super != NULL) {
os << " super='" << PrettyClass(super) << "' (cl=" << super->GetClassLoader() << ")\n";
}
if (IsArrayClass()) {
os << " componentType=" << PrettyClass(GetComponentType()) << "\n";
}
if (NumInterfaces() > 0) {
os << " interfaces (" << NumInterfaces() << "):\n";
for (size_t i = 0; i < NumInterfaces(); ++i) {
Class* interface = GetInterface(i);
const ClassLoader* cl = interface->GetClassLoader();
os << StringPrintf(" %2d: %s (cl=%p)\n", i, PrettyClass(interface).c_str(), cl);
}
}
os << " vtable (" << NumVirtualMethods() << " entries, "
<< (super != NULL ? super->NumVirtualMethods() : 0) << " in super):\n";
for (size_t i = 0; i < NumVirtualMethods(); ++i) {
os << StringPrintf(" %2d: %s\n", i, PrettyMethod(GetVirtualMethodDuringLinking(i)).c_str());
}
os << " direct methods (" << NumDirectMethods() << " entries):\n";
for (size_t i = 0; i < NumDirectMethods(); ++i) {
os << StringPrintf(" %2d: %s\n", i, PrettyMethod(GetDirectMethod(i)).c_str());
}
if (NumStaticFields() > 0) {
os << " static fields (" << NumStaticFields() << " entries):\n";
if (IsResolved() || IsErroneous()) {
for (size_t i = 0; i < NumStaticFields(); ++i) {
os << StringPrintf(" %2d: %s\n", i, PrettyField(GetStaticField(i)).c_str());
}
} else {
os << " <not yet available>";
}
}
if (NumInstanceFields() > 0) {
os << " instance fields (" << NumInstanceFields() << " entries):\n";
if (IsResolved() || IsErroneous()) {
for (size_t i = 0; i < NumInstanceFields(); ++i) {
os << StringPrintf(" %2d: %s\n", i, PrettyField(GetInstanceField(i)).c_str());
}
} else {
os << " <not yet available>";
}
}
}
void Class::SetReferenceInstanceOffsets(uint32_t new_reference_offsets) {
if (new_reference_offsets != CLASS_WALK_SUPER) {
// Sanity check that the number of bits set in the reference offset bitmap
// agrees with the number of references
Class* cur = this;
size_t cnt = 0;
while (cur) {
cnt += cur->NumReferenceInstanceFieldsDuringLinking();
cur = cur->GetSuperClass();
}
CHECK_EQ((size_t)__builtin_popcount(new_reference_offsets), cnt);
}
SetField32(OFFSET_OF_OBJECT_MEMBER(Class, reference_instance_offsets_),
new_reference_offsets, false);
}
void Class::SetReferenceStaticOffsets(uint32_t new_reference_offsets) {
if (new_reference_offsets != CLASS_WALK_SUPER) {
// Sanity check that the number of bits set in the reference offset bitmap
// agrees with the number of references
CHECK_EQ((size_t)__builtin_popcount(new_reference_offsets),
NumReferenceStaticFieldsDuringLinking());
}
SetField32(OFFSET_OF_OBJECT_MEMBER(Class, reference_static_offsets_),
new_reference_offsets, false);
}
size_t Class::PrimitiveSize() const {
switch (GetPrimitiveType()) {
case kPrimBoolean:
case kPrimByte:
case kPrimChar:
case kPrimShort:
case kPrimInt:
case kPrimFloat:
return sizeof(int32_t);
case kPrimLong:
case kPrimDouble:
return sizeof(int64_t);
default:
LOG(FATAL) << "Primitive type size calculation on invalid type " << this;
return 0;
}
}
size_t Class::GetTypeSize(const String* descriptor) {
switch (descriptor->CharAt(0)) {
case 'B': return 1; // byte
case 'C': return 2; // char
case 'D': return 8; // double
case 'F': return 4; // float
case 'I': return 4; // int
case 'J': return 8; // long
case 'S': return 2; // short
case 'Z': return 1; // boolean
case 'L': return sizeof(Object*);
case '[': return sizeof(Array*);
default:
LOG(ERROR) << "Unknown type " << descriptor;
return 0;
}
}
bool Class::Implements(const Class* klass) const {
DCHECK(klass != NULL);
DCHECK(klass->IsInterface()) << PrettyClass(this);
// All interfaces implemented directly and by our superclass, and
// recursively all super-interfaces of those interfaces, are listed
// in iftable_, so we can just do a linear scan through that.
int32_t iftable_count = GetIfTableCount();
ObjectArray<InterfaceEntry>* iftable = GetIfTable();
for (int32_t i = 0; i < iftable_count; i++) {
if (iftable->Get(i)->GetInterface() == klass) {
return true;
}
}
return false;
}
// Determine whether "this" is assignable from "klazz", where both of these
// are array classes.
//
// Consider an array class, e.g. Y[][], where Y is a subclass of X.
// Y[][] = Y[][] --> true (identity)
// X[][] = Y[][] --> true (element superclass)
// Y = Y[][] --> false
// Y[] = Y[][] --> false
// Object = Y[][] --> true (everything is an object)
// Object[] = Y[][] --> true
// Object[][] = Y[][] --> true
// Object[][][] = Y[][] --> false (too many []s)
// Serializable = Y[][] --> true (all arrays are Serializable)
// Serializable[] = Y[][] --> true
// Serializable[][] = Y[][] --> false (unless Y is Serializable)
//
// Don't forget about primitive types.
// Object[] = int[] --> false
//
bool Class::IsArrayAssignableFromArray(const Class* src) const {
DCHECK(IsArrayClass()) << PrettyClass(this);
DCHECK(src->IsArrayClass()) << PrettyClass(src);
return GetComponentType()->IsAssignableFrom(src->GetComponentType());
}
bool Class::IsAssignableFromArray(const Class* src) const {
DCHECK(!IsInterface()) << PrettyClass(this); // handled first in IsAssignableFrom
DCHECK(src->IsArrayClass()) << PrettyClass(src);
if (!IsArrayClass()) {
// If "this" is not also an array, it must be Object.
// src's super should be java_lang_Object, since it is an array.
Class* java_lang_Object = src->GetSuperClass();
DCHECK(java_lang_Object != NULL) << PrettyClass(src);
DCHECK(java_lang_Object->GetSuperClass() == NULL) << PrettyClass(src);
return this == java_lang_Object;
}
return IsArrayAssignableFromArray(src);
}
bool Class::IsSubClass(const Class* klass) const {
DCHECK(!IsInterface()) << PrettyClass(this);
DCHECK(!IsArrayClass()) << PrettyClass(this);
const Class* current = this;
do {
if (current == klass) {
return true;
}
current = current->GetSuperClass();
} while (current != NULL);
return false;
}
bool Class::IsInSamePackage(const String* descriptor_string_1,
const String* descriptor_string_2) {
const std::string descriptor1(descriptor_string_1->ToModifiedUtf8());
const std::string descriptor2(descriptor_string_2->ToModifiedUtf8());
size_t i = 0;
while (descriptor1[i] != '\0' && descriptor1[i] == descriptor2[i]) {
++i;
}
if (descriptor1.find('/', i) != StringPiece::npos ||
descriptor2.find('/', i) != StringPiece::npos) {
return false;
} else {
return true;
}
}
#if 0
bool Class::IsInSamePackage(const StringPiece& descriptor1,
const StringPiece& descriptor2) {
size_t size = std::min(descriptor1.size(), descriptor2.size());
std::pair<StringPiece::const_iterator, StringPiece::const_iterator> pos;
pos = std::mismatch(descriptor1.begin(), descriptor1.begin() + size,
descriptor2.begin());
return !(*(pos.second).rfind('/') != npos && descriptor2.rfind('/') != npos);
}
#endif
bool Class::IsInSamePackage(const Class* that) const {
const Class* klass1 = this;
const Class* klass2 = that;
if (klass1 == klass2) {
return true;
}
// Class loaders must match.
if (klass1->GetClassLoader() != klass2->GetClassLoader()) {
return false;
}
// Arrays are in the same package when their element classes are.
while (klass1->IsArrayClass()) {
klass1 = klass1->GetComponentType();
}
while (klass2->IsArrayClass()) {
klass2 = klass2->GetComponentType();
}
// Compare the package part of the descriptor string.
return IsInSamePackage(klass1->descriptor_, klass2->descriptor_);
}
const ClassLoader* Class::GetClassLoader() const {
return GetFieldObject<const ClassLoader*>(
OFFSET_OF_OBJECT_MEMBER(Class, class_loader_), false);
}
void Class::SetClassLoader(const ClassLoader* new_cl) {
ClassLoader* new_class_loader = const_cast<ClassLoader*>(new_cl);
SetFieldObject(OFFSET_OF_OBJECT_MEMBER(Class, class_loader_),
new_class_loader, false);
}
Method* Class::FindVirtualMethodForInterface(Method* method) {
Class* declaring_class = method->GetDeclaringClass();
DCHECK(declaring_class != NULL) << PrettyClass(this);
DCHECK(declaring_class->IsInterface()) << PrettyMethod(method);
// TODO cache to improve lookup speed
int32_t iftable_count = GetIfTableCount();
ObjectArray<InterfaceEntry>* iftable = GetIfTable();
for (int32_t i = 0; i < iftable_count; i++) {
InterfaceEntry* interface_entry = iftable->Get(i);
if (interface_entry->GetInterface() == declaring_class) {
return interface_entry->GetMethodArray()->Get(method->GetMethodIndex());
}
}
Thread::Current()->ThrowNewExceptionF("Ljava/lang/IncompatibleClassChangeError;",
"Class %s does not implement interface %s",
PrettyDescriptor(GetDescriptor()).c_str(),
PrettyDescriptor(declaring_class->GetDescriptor()).c_str());
return NULL;
}
Method* Class::FindInterfaceMethod(const StringPiece& name,
const StringPiece& signature) {
// Check the current class before checking the interfaces.
Method* method = FindVirtualMethod(name, signature);
if (method != NULL) {
return method;
}
int32_t iftable_count = GetIfTableCount();
ObjectArray<InterfaceEntry>* iftable = GetIfTable();
for (int32_t i = 0; i < iftable_count; i++) {
method = iftable->Get(i)->GetInterface()->FindVirtualMethod(name, signature);
if (method != NULL) {
return method;
}
}
return NULL;
}
Method* Class::FindDeclaredDirectMethod(const StringPiece& name,
const StringPiece& signature) {
for (size_t i = 0; i < NumDirectMethods(); ++i) {
Method* method = GetDirectMethod(i);
if (method->GetName()->Equals(name) &&
method->GetSignature()->Equals(signature)) {
return method;
}
}
return NULL;
}
Method* Class::FindDirectMethod(const StringPiece& name,
const StringPiece& signature) {
for (Class* klass = this; klass != NULL; klass = klass->GetSuperClass()) {
Method* method = klass->FindDeclaredDirectMethod(name, signature);
if (method != NULL) {
return method;
}
}
return NULL;
}
Method* Class::FindDeclaredVirtualMethod(const StringPiece& name,
const StringPiece& signature) {
for (size_t i = 0; i < NumVirtualMethods(); ++i) {
Method* method = GetVirtualMethod(i);
if (method->GetName()->Equals(name) &&
method->GetSignature()->Equals(signature)) {
return method;
}
}
return NULL;
}
Method* Class::FindVirtualMethod(const StringPiece& name,
const StringPiece& signature) {
for (Class* klass = this; klass != NULL; klass = klass->GetSuperClass()) {
Method* method = klass->FindDeclaredVirtualMethod(name, signature);
if (method != NULL) {
return method;
}
}
return NULL;
}
Field* Class::FindDeclaredInstanceField(const StringPiece& name, Class* type) {
// Is the field in this class?
// Interfaces are not relevant because they can't contain instance fields.
for (size_t i = 0; i < NumInstanceFields(); ++i) {
Field* f = GetInstanceField(i);
if (f->GetName()->Equals(name) && type == f->GetType()) {
return f;
}
}
return NULL;
}
Field* Class::FindInstanceField(const StringPiece& name, Class* type) {
// Is the field in this class, or any of its superclasses?
// Interfaces are not relevant because they can't contain instance fields.
for (Class* c = this; c != NULL; c = c->GetSuperClass()) {
Field* f = c->FindDeclaredInstanceField(name, type);
if (f != NULL) {
return f;
}
}
return NULL;
}
Field* Class::FindDeclaredStaticField(const StringPiece& name, Class* type) {
DCHECK(type != NULL);
for (size_t i = 0; i < NumStaticFields(); ++i) {
Field* f = GetStaticField(i);
if (f->GetName()->Equals(name) && f->GetType() == type) {
return f;
}
}
return NULL;
}
Field* Class::FindStaticField(const StringPiece& name, Class* type) {
// Is the field in this class (or its interfaces), or any of its
// superclasses (or their interfaces)?
for (Class* c = this; c != NULL; c = c->GetSuperClass()) {
// Is the field in this class?
Field* f = c->FindDeclaredStaticField(name, type);
if (f != NULL) {
return f;
}
// Is this field in any of this class' interfaces?
for (int32_t i = 0; i < c->GetIfTableCount(); ++i) {
InterfaceEntry* interface_entry = c->GetIfTable()->Get(i);
Class* interface = interface_entry->GetInterface();
f = interface->FindDeclaredStaticField(name, type);
if (f != NULL) {
return f;
}
}
}
return NULL;
}
Array* Array::Alloc(Class* array_class, int32_t component_count, size_t component_size) {
DCHECK(array_class != NULL);
DCHECK_GE(component_count, 0);
DCHECK(array_class->IsArrayClass());
size_t header_size = sizeof(Array);
size_t data_size = component_count * component_size;
size_t size = header_size + data_size;
// Check for overflow and throw OutOfMemoryError if this was an unreasonable request.
size_t component_shift = sizeof(size_t) * 8 - 1 - CLZ(component_size);
if (data_size >> component_shift != size_t(component_count) || size < data_size) {
Thread::Current()->ThrowNewExceptionF("Ljava/lang/OutOfMemoryError;",
"%s of length %zd exceeds the VM limit",
PrettyDescriptor(array_class->GetDescriptor()).c_str(), component_count);
return NULL;
}
Array* array = down_cast<Array*>(Heap::AllocObject(array_class, size));
if (array != NULL) {
DCHECK(array->IsArrayInstance());
array->SetLength(component_count);
}
// TODO: throw OutOfMemoryError. (here or in Heap::AllocObject?)
CHECK(array != NULL) << PrettyClass(array_class)
<< " component_count=" << component_count
<< " component_size=" << component_size;
return array;
}
Array* Array::Alloc(Class* array_class, int32_t component_count) {
return Alloc(array_class, component_count, array_class->GetComponentSize());
}
bool Array::ThrowArrayIndexOutOfBoundsException(int32_t index) const {
Thread::Current()->ThrowNewExceptionF("Ljava/lang/ArrayIndexOutOfBoundsException;",
"length=%i; index=%i", length_, index);
return false;
}
bool Array::ThrowArrayStoreException(Object* object) const {
Thread::Current()->ThrowNewExceptionF("Ljava/lang/ArrayStoreException;",
"Can't store an element of type %s into an array of type %s",
PrettyTypeOf(object).c_str(), PrettyTypeOf(this).c_str());
return false;
}
template<typename T>
PrimitiveArray<T>* PrimitiveArray<T>::Alloc(size_t length) {
DCHECK(array_class_ != NULL);
Array* raw_array = Array::Alloc(array_class_, length, sizeof(T));
return down_cast<PrimitiveArray<T>*>(raw_array);
}
template <typename T> Class* PrimitiveArray<T>::array_class_ = NULL;
// Explicitly instantiate all the primitive array types.
template class PrimitiveArray<uint8_t>; // BooleanArray
template class PrimitiveArray<int8_t>; // ByteArray
template class PrimitiveArray<uint16_t>; // CharArray
template class PrimitiveArray<double>; // DoubleArray
template class PrimitiveArray<float>; // FloatArray
template class PrimitiveArray<int32_t>; // IntArray
template class PrimitiveArray<int64_t>; // LongArray
template class PrimitiveArray<int16_t>; // ShortArray
// TODO: get global references for these
Class* String::java_lang_String_ = NULL;
void String::SetClass(Class* java_lang_String) {
CHECK(java_lang_String_ == NULL);
CHECK(java_lang_String != NULL);
java_lang_String_ = java_lang_String;
}
void String::ResetClass() {
CHECK(java_lang_String_ != NULL);
java_lang_String_ = NULL;
}
String* String::Intern() {
return Runtime::Current()->GetInternTable()->InternWeak(this);
}
int32_t String::GetHashCode() {
int32_t result = GetField32(OFFSET_OF_OBJECT_MEMBER(String, hash_code_), false);
if (result == 0) {
ComputeHashCode();
}
result = GetField32(OFFSET_OF_OBJECT_MEMBER(String, hash_code_), false);
DCHECK(result != 0 || ComputeUtf16Hash(GetCharArray(), GetOffset(), GetLength()) == 0)
<< ToModifiedUtf8() << " " << result;
return result;
}
int32_t String::GetLength() const {
int32_t result = GetField32(OFFSET_OF_OBJECT_MEMBER(String, count_), false);
DCHECK(result >= 0 && result <= GetCharArray()->GetLength());
return result;
}
uint16_t String::CharAt(int32_t index) const {
// TODO: do we need this? Equals is the only caller, and could
// bounds check itself.
if (index < 0 || index >= count_) {
Thread* self = Thread::Current();
self->ThrowNewExceptionF("Ljava/lang/StringIndexOutOfBoundsException;",
"length=%i; index=%i", count_, index);
return 0;
}
return GetCharArray()->Get(index + GetOffset());
}
String* String::AllocFromUtf16(int32_t utf16_length,
const uint16_t* utf16_data_in,
int32_t hash_code) {
String* string = Alloc(GetJavaLangString(), utf16_length);
// TODO: use 16-bit wide memset variant
CharArray* array = const_cast<CharArray*>(string->GetCharArray());
for (int i = 0; i < utf16_length; i++) {
array->Set(i, utf16_data_in[i]);
}
if (hash_code != 0) {
string->SetHashCode(hash_code);
} else {
string->ComputeHashCode();
}
return string;
}
String* String::AllocFromModifiedUtf8(const char* utf) {
size_t char_count = CountModifiedUtf8Chars(utf);
return AllocFromModifiedUtf8(char_count, utf);
}
String* String::AllocFromModifiedUtf8(int32_t utf16_length,
const char* utf8_data_in) {
String* string = Alloc(GetJavaLangString(), utf16_length);
uint16_t* utf16_data_out =
const_cast<uint16_t*>(string->GetCharArray()->GetData());
ConvertModifiedUtf8ToUtf16(utf16_data_out, utf8_data_in);
string->ComputeHashCode();
return string;
}
String* String::Alloc(Class* java_lang_String, int32_t utf16_length) {
return Alloc(java_lang_String, CharArray::Alloc(utf16_length));
}
String* String::Alloc(Class* java_lang_String, CharArray* array) {
String* string = down_cast<String*>(java_lang_String->AllocObject());
string->SetArray(array);
string->SetCount(array->GetLength());
return string;
}
bool String::Equals(const String* that) const {
if (this == that) {
// Quick reference equality test
return true;
} else if (that == NULL) {
// Null isn't an instanceof anything
return false;
} else if (this->GetLength() != that->GetLength()) {
// Quick length inequality test
return false;
} else {
// Note: don't short circuit on hash code as we're presumably here as the
// hash code was already equal
for (int32_t i = 0; i < that->GetLength(); ++i) {
if (this->CharAt(i) != that->CharAt(i)) {
return false;
}
}
return true;
}
}
bool String::Equals(const uint16_t* that_chars, int32_t that_offset,
int32_t that_length) const {
if (this->GetLength() != that_length) {
return false;
} else {
for (int32_t i = 0; i < that_length; ++i) {
if (this->CharAt(i) != that_chars[that_offset + i]) {
return false;
}
}
return true;
}
}
bool String::Equals(const char* modified_utf8) const {
for (int32_t i = 0; i < GetLength(); ++i) {
uint16_t ch = GetUtf16FromUtf8(&modified_utf8);
if (ch == '\0' || ch != CharAt(i)) {
return false;
}
}
return *modified_utf8 == '\0';
}
bool String::Equals(const StringPiece& modified_utf8) const {
if (modified_utf8.size() != GetLength()) {
return false;
}
const char* p = modified_utf8.data();
for (int32_t i = 0; i < GetLength(); ++i) {
uint16_t ch = GetUtf16FromUtf8(&p);
if (ch != CharAt(i)) {
return false;
}
}
return true;
}
// Create a modified UTF-8 encoded std::string from a java/lang/String object.
std::string String::ToModifiedUtf8() const {
const uint16_t* chars = GetCharArray()->GetData() + GetOffset();
size_t byte_count(CountUtf8Bytes(chars, GetLength()));
std::string result(byte_count, char(0));
ConvertUtf16ToModifiedUtf8(&result[0], chars, GetLength());
return result;
}
Class* StackTraceElement::java_lang_StackTraceElement_ = NULL;
void StackTraceElement::SetClass(Class* java_lang_StackTraceElement) {
CHECK(java_lang_StackTraceElement_ == NULL);
CHECK(java_lang_StackTraceElement != NULL);
java_lang_StackTraceElement_ = java_lang_StackTraceElement;
}
void StackTraceElement::ResetClass() {
CHECK(java_lang_StackTraceElement_ != NULL);
java_lang_StackTraceElement_ = NULL;
}
StackTraceElement* StackTraceElement::Alloc(const String* declaring_class,
const String* method_name,
const String* file_name,
int32_t line_number) {
StackTraceElement* trace =
down_cast<StackTraceElement*>(GetStackTraceElement()->AllocObject());
trace->SetFieldObject(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, declaring_class_),
const_cast<String*>(declaring_class), false);
trace->SetFieldObject(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, method_name_),
const_cast<String*>(method_name), false);
trace->SetFieldObject(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, file_name_),
const_cast<String*>(file_name), false);
trace->SetField32(OFFSET_OF_OBJECT_MEMBER(StackTraceElement, line_number_),
line_number, false);
return trace;
}
static const char* kClassStatusNames[] = {
"Error",
"NotReady",
"Idx",
"Loaded",
"Resolved",
"Verifying",
"Verified",
"Initializing",
"Initialized"
};
std::ostream& operator<<(std::ostream& os, const Class::Status& rhs) {
if (rhs >= Class::kStatusError && rhs <= Class::kStatusInitialized) {
os << kClassStatusNames[rhs + 1];
} else {
os << "Class::Status[" << static_cast<int>(rhs) << "]";
}
return os;
}
} // namespace art