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/*
* Copyright (C) 2015 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.
*/
#ifndef ART_RUNTIME_MIRROR_FIELD_INL_H_
#define ART_RUNTIME_MIRROR_FIELD_INL_H_
#include "field.h"
#include "art_field-inl.h"
#include "mirror/dex_cache-inl.h"
#include "runtime-inl.h"
namespace art {
namespace mirror {
template <PointerSize kPointerSize, bool kTransactionActive>
inline mirror::Field* Field::CreateFromArtField(Thread* self, ArtField* field, bool force_resolve) {
StackHandleScope<2> hs(self);
// Try to resolve type before allocating since this is a thread suspension point.
Handle<mirror::Class> type = hs.NewHandle(field->GetType<true>());
if (type.Get() == nullptr) {
if (force_resolve) {
if (kIsDebugBuild) {
self->AssertPendingException();
}
return nullptr;
} else {
// Can't resolve, clear the exception if it isn't OOME and continue with a null type.
mirror::Throwable* exception = self->GetException();
if (exception->GetClass()->DescriptorEquals("Ljava/lang/OutOfMemoryError;")) {
return nullptr;
}
self->ClearException();
}
}
auto ret = hs.NewHandle(ObjPtr<Field>::DownCast(StaticClass()->AllocObject(self)));
if (UNLIKELY(ret.Get() == nullptr)) {
self->AssertPendingOOMException();
return nullptr;
}
auto dex_field_index = field->GetDexFieldIndex();
auto* resolved_field = field->GetDexCache()->GetResolvedField(dex_field_index, kPointerSize);
if (field->GetDeclaringClass()->IsProxyClass()) {
DCHECK(field->IsStatic());
DCHECK_LT(dex_field_index, 2U);
// The two static fields (interfaces, throws) of all proxy classes
// share the same dex file indices 0 and 1. So, we can't resolve
// them in the dex cache.
} else {
if (resolved_field != nullptr) {
DCHECK_EQ(resolved_field, field);
} else {
// We rely on the field being resolved so that we can back to the ArtField
// (i.e. FromReflectedMethod).
field->GetDexCache()->SetResolvedField(dex_field_index, field, kPointerSize);
}
}
ret->SetType<kTransactionActive>(type.Get());
ret->SetDeclaringClass<kTransactionActive>(field->GetDeclaringClass());
ret->SetAccessFlags<kTransactionActive>(field->GetAccessFlags());
ret->SetDexFieldIndex<kTransactionActive>(dex_field_index);
ret->SetOffset<kTransactionActive>(field->GetOffset().Int32Value());
return ret.Get();
}
template<bool kTransactionActive>
inline void Field::SetDeclaringClass(ObjPtr<mirror::Class> c) {
SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(Field, declaring_class_), c);
}
template<bool kTransactionActive>
inline void Field::SetType(ObjPtr<mirror::Class> type) {
SetFieldObject<kTransactionActive>(OFFSET_OF_OBJECT_MEMBER(Field, type_), type);
}
} // namespace mirror
} // namespace art
#endif // ART_RUNTIME_MIRROR_FIELD_INL_H_