| /* |
| * 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_TYPE_H_ |
| #define ART_RUNTIME_MIRROR_METHOD_TYPE_H_ |
| |
| #include "base/utils.h" |
| #include "object_array.h" |
| #include "object.h" |
| #include "string.h" |
| |
| namespace art { |
| |
| struct MethodTypeOffsets; |
| |
| namespace mirror { |
| |
| // C++ mirror of java.lang.invoke.MethodType |
| class MANAGED MethodType : public Object { |
| public: |
| static MethodType* Create(Thread* const self, |
| Handle<Class> return_type, |
| Handle<ObjectArray<Class>> param_types) |
| REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_); |
| |
| static MethodType* CloneWithoutLeadingParameter(Thread* const self, |
| ObjPtr<MethodType> method_type) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| static Class* StaticClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return static_class_.Read(); |
| } |
| |
| ObjectArray<Class>* GetPTypes() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetFieldObject<ObjectArray<Class>>(OFFSET_OF_OBJECT_MEMBER(MethodType, p_types_)); |
| } |
| |
| int GetNumberOfPTypes() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetPTypes()->GetLength(); |
| } |
| |
| // Number of virtual registers required to hold the parameters for |
| // this method type. |
| size_t NumberOfVRegs() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| Class* GetRType() REQUIRES_SHARED(Locks::mutator_lock_) { |
| return GetFieldObject<Class>(OFFSET_OF_OBJECT_MEMBER(MethodType, r_type_)); |
| } |
| |
| 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_); |
| |
| // Returns true iff. |this| is an exact match for method type |target|, i.e |
| // iff. they have the same return types and parameter types. |
| bool IsExactMatch(MethodType* target) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns true iff. |this| can be converted to match |target| method type, i.e |
| // iff. they have convertible return types and parameter types. |
| bool IsConvertible(MethodType* target) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| // Returns the pretty descriptor for this method type, suitable for display in |
| // exception messages and the like. |
| std::string PrettyDescriptor() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| private: |
| static MemberOffset FormOffset() { |
| return MemberOffset(OFFSETOF_MEMBER(MethodType, form_)); |
| } |
| |
| static MemberOffset MethodDescriptorOffset() { |
| return MemberOffset(OFFSETOF_MEMBER(MethodType, method_descriptor_)); |
| } |
| |
| static MemberOffset PTypesOffset() { |
| return MemberOffset(OFFSETOF_MEMBER(MethodType, p_types_)); |
| } |
| |
| static MemberOffset RTypeOffset() { |
| return MemberOffset(OFFSETOF_MEMBER(MethodType, r_type_)); |
| } |
| |
| static MemberOffset WrapAltOffset() { |
| return MemberOffset(OFFSETOF_MEMBER(MethodType, wrap_alt_)); |
| } |
| |
| HeapReference<Object> form_; // Unused in the runtime |
| HeapReference<String> method_descriptor_; // Unused in the runtime |
| HeapReference<ObjectArray<Class>> p_types_; |
| HeapReference<Class> r_type_; |
| HeapReference<Object> wrap_alt_; // Unused in the runtime |
| |
| static GcRoot<Class> static_class_; // java.lang.invoke.MethodType.class |
| |
| friend struct art::MethodTypeOffsets; // for verifying offset information |
| DISALLOW_IMPLICIT_CONSTRUCTORS(MethodType); |
| }; |
| |
| } // namespace mirror |
| } // namespace art |
| |
| #endif // ART_RUNTIME_MIRROR_METHOD_TYPE_H_ |