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/*
* Copyright (C) 2016 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_METHOD_HANDLE_IMPL_H_
#define ART_RUNTIME_MIRROR_METHOD_HANDLE_IMPL_H_
#include "class.h"
#include "gc_root.h"
#include "object.h"
#include "method_handles.h"
#include "method_type.h"
namespace art {
struct MethodHandleImplOffsets;
namespace mirror {
// C++ mirror of java.lang.invoke.MethodHandle
class MANAGED MethodHandle : public Object {
public:
mirror::MethodType* GetMethodType() REQUIRES_SHARED(Locks::mutator_lock_) {
return GetFieldObject<mirror::MethodType>(OFFSET_OF_OBJECT_MEMBER(MethodHandle, method_type_));
}
mirror::MethodType* GetNominalType() REQUIRES_SHARED(Locks::mutator_lock_) {
return GetFieldObject<mirror::MethodType>(OFFSET_OF_OBJECT_MEMBER(MethodHandle, nominal_type_));
}
ArtField* GetTargetField() REQUIRES_SHARED(Locks::mutator_lock_) {
return reinterpret_cast<ArtField*>(
GetField64(OFFSET_OF_OBJECT_MEMBER(MethodHandle, art_field_or_method_)));
}
ArtMethod* GetTargetMethod() REQUIRES_SHARED(Locks::mutator_lock_) {
return reinterpret_cast<ArtMethod*>(
GetField64(OFFSET_OF_OBJECT_MEMBER(MethodHandle, art_field_or_method_)));
}
MethodHandleKind GetHandleKind() REQUIRES_SHARED(Locks::mutator_lock_) {
const int32_t handle_kind = GetField32(OFFSET_OF_OBJECT_MEMBER(MethodHandle, handle_kind_));
DCHECK(handle_kind >= 0 && handle_kind <= MethodHandleKind::kLastValidKind);
return static_cast<MethodHandleKind>(handle_kind);
}
private:
HeapReference<mirror::MethodType> nominal_type_;
HeapReference<mirror::MethodType> method_type_;
uint64_t art_field_or_method_;
uint32_t handle_kind_;
private:
static MemberOffset NominalTypeOffset() {
return MemberOffset(OFFSETOF_MEMBER(MethodHandle, nominal_type_));
}
static MemberOffset MethodTypeOffset() {
return MemberOffset(OFFSETOF_MEMBER(MethodHandle, method_type_));
}
static MemberOffset ArtFieldOrMethodOffset() {
return MemberOffset(OFFSETOF_MEMBER(MethodHandle, art_field_or_method_));
}
static MemberOffset HandleKindOffset() {
return MemberOffset(OFFSETOF_MEMBER(MethodHandle, handle_kind_));
}
friend struct art::MethodHandleImplOffsets; // for verifying offset information
DISALLOW_IMPLICIT_CONSTRUCTORS(MethodHandle);
};
// C++ mirror of java.lang.invoke.MethodHandleImpl
class MANAGED MethodHandleImpl : public MethodHandle {
public:
static mirror::Class* StaticClass() REQUIRES_SHARED(Locks::mutator_lock_) {
return static_class_.Read();
}
static void SetClass(Class* klass) REQUIRES_SHARED(Locks::mutator_lock_);
static void ResetClass() REQUIRES_SHARED(Locks::mutator_lock_);
static void VisitRoots(RootVisitor* visitor) REQUIRES_SHARED(Locks::mutator_lock_);
private:
static GcRoot<mirror::Class> static_class_; // java.lang.invoke.MethodHandleImpl.class
friend struct art::MethodHandleImplOffsets; // for verifying offset information
DISALLOW_IMPLICIT_CONSTRUCTORS(MethodHandleImpl);
};
} // namespace mirror
} // namespace art
#endif // ART_RUNTIME_MIRROR_METHOD_HANDLE_IMPL_H_