1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ART_COMPILER_OPTIMIZING_HANDLE_CACHE_H_ 18 #define ART_COMPILER_OPTIMIZING_HANDLE_CACHE_H_ 19 20 #include "base/macros.h" 21 #include "class_root.h" 22 #include "reference_type_info.h" 23 24 namespace art HIDDEN { 25 26 class VariableSizedHandleScope; 27 28 class HandleCache { 29 public: HandleCache(VariableSizedHandleScope * handles)30 explicit HandleCache(VariableSizedHandleScope* handles) : handles_(handles) { } 31 GetHandles()32 VariableSizedHandleScope* GetHandles() { return handles_; } 33 34 template <typename T> 35 MutableHandle<T> NewHandle(T* object) REQUIRES_SHARED(Locks::mutator_lock_); 36 37 template <typename T> 38 MutableHandle<T> NewHandle(ObjPtr<T> object) REQUIRES_SHARED(Locks::mutator_lock_); 39 GetObjectClassHandle()40 ReferenceTypeInfo::TypeHandle GetObjectClassHandle() { 41 return GetRootHandle(ClassRoot::kJavaLangObject, &object_class_handle_); 42 } 43 GetClassClassHandle()44 ReferenceTypeInfo::TypeHandle GetClassClassHandle() { 45 return GetRootHandle(ClassRoot::kJavaLangClass, &class_class_handle_); 46 } 47 GetMethodHandleClassHandle()48 ReferenceTypeInfo::TypeHandle GetMethodHandleClassHandle() { 49 return GetRootHandle(ClassRoot::kJavaLangInvokeMethodHandleImpl, &method_handle_class_handle_); 50 } 51 GetMethodTypeClassHandle()52 ReferenceTypeInfo::TypeHandle GetMethodTypeClassHandle() { 53 return GetRootHandle(ClassRoot::kJavaLangInvokeMethodType, &method_type_class_handle_); 54 } 55 GetStringClassHandle()56 ReferenceTypeInfo::TypeHandle GetStringClassHandle() { 57 return GetRootHandle(ClassRoot::kJavaLangString, &string_class_handle_); 58 } 59 GetThrowableClassHandle()60 ReferenceTypeInfo::TypeHandle GetThrowableClassHandle() { 61 return GetRootHandle(ClassRoot::kJavaLangThrowable, &throwable_class_handle_); 62 } 63 64 private: GetRootHandle(ClassRoot class_root,ReferenceTypeInfo::TypeHandle * cache)65 inline ReferenceTypeInfo::TypeHandle GetRootHandle(ClassRoot class_root, 66 ReferenceTypeInfo::TypeHandle* cache) { 67 if (UNLIKELY(!ReferenceTypeInfo::IsValidHandle(*cache))) { 68 *cache = CreateRootHandle(handles_, class_root); 69 } 70 return *cache; 71 } 72 73 static ReferenceTypeInfo::TypeHandle CreateRootHandle(VariableSizedHandleScope* handles, 74 ClassRoot class_root); 75 76 VariableSizedHandleScope* handles_; 77 78 ReferenceTypeInfo::TypeHandle object_class_handle_; 79 ReferenceTypeInfo::TypeHandle class_class_handle_; 80 ReferenceTypeInfo::TypeHandle method_handle_class_handle_; 81 ReferenceTypeInfo::TypeHandle method_type_class_handle_; 82 ReferenceTypeInfo::TypeHandle string_class_handle_; 83 ReferenceTypeInfo::TypeHandle throwable_class_handle_; 84 }; 85 86 } // namespace art 87 88 #endif // ART_COMPILER_OPTIMIZING_HANDLE_CACHE_H_ 89 90