1 /* 2 * Copyright (C) 2017 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_RUNTIME_MIRROR_CALL_SITE_H_ 18 #define ART_RUNTIME_MIRROR_CALL_SITE_H_ 19 20 #include "base/utils.h" 21 #include "mirror/method_handle_impl.h" 22 23 namespace art { 24 25 struct CallSiteOffsets; 26 27 namespace mirror { 28 29 // C++ mirror of java.lang.invoke.CallSite 30 class MANAGED CallSite : public Object { 31 public: 32 static mirror::CallSite* Create(Thread* const self, 33 Handle<MethodHandle> method_handle) 34 REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_); 35 36 static mirror::Class* StaticClass() REQUIRES_SHARED(Locks::mutator_lock_) { 37 return static_class_.Read(); 38 } 39 40 MethodHandle* GetTarget() REQUIRES_SHARED(Locks::mutator_lock_) { 41 return GetFieldObject<MethodHandle>(TargetOffset()); 42 } 43 44 static void SetClass(Class* klass) REQUIRES_SHARED(Locks::mutator_lock_); 45 static void ResetClass() REQUIRES_SHARED(Locks::mutator_lock_); 46 static void VisitRoots(RootVisitor* visitor) REQUIRES_SHARED(Locks::mutator_lock_); 47 48 private: 49 static inline MemberOffset TargetOffset() { 50 return MemberOffset(OFFSETOF_MEMBER(CallSite, target_)); 51 } 52 53 HeapReference<mirror::MethodHandle> target_; 54 55 static GcRoot<mirror::Class> static_class_; // java.lang.invoke.CallSite.class 56 57 friend struct art::CallSiteOffsets; // for verifying offset information 58 DISALLOW_IMPLICIT_CONSTRUCTORS(CallSite); 59 }; 60 61 } // namespace mirror 62 } // namespace art 63 64 #endif // ART_RUNTIME_MIRROR_CALL_SITE_H_ 65
