1 /* 2 * Copyright (C) 2016 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 #include "method_handle_impl-inl.h" 18 19 #include "class-inl.h" 20 #include "gc_root-inl.h" 21 22 namespace art { 23 namespace mirror { 24 25 mirror::Class* MethodHandle::StaticClass() { 26 mirror::Class* klass = MethodHandleImpl::StaticClass()->GetSuperClass(); 27 DCHECK(klass->DescriptorEquals("Ljava/lang/invoke/MethodHandle;")); 28 return klass; 29 } 30 31 void MethodHandle::Initialize(uintptr_t art_field_or_method, 32 Kind kind, 33 Handle<MethodType> method_type) 34 REQUIRES_SHARED(Locks::mutator_lock_) { 35 CHECK(!Runtime::Current()->IsActiveTransaction()); 36 SetFieldObject<false>(CachedSpreadInvokerOffset(), nullptr); 37 SetFieldObject<false>(NominalTypeOffset(), nullptr); 38 SetFieldObject<false>(MethodTypeOffset(), method_type.Get()); 39 SetField32<false>(HandleKindOffset(), static_cast<uint32_t>(kind)); 40 SetField64<false>(ArtFieldOrMethodOffset(), art_field_or_method); 41 } 42 43 GcRoot<mirror::Class> MethodHandleImpl::static_class_; 44 45 mirror::Class* MethodHandleImpl::StaticClass() { 46 return static_class_.Read(); 47 } 48 49 void MethodHandleImpl::SetClass(Class* klass) { 50 CHECK(static_class_.IsNull()) << static_class_.Read() << " " << klass; 51 CHECK(klass != nullptr); 52 static_class_ = GcRoot<Class>(klass); 53 } 54 55 void MethodHandleImpl::ResetClass() { 56 CHECK(!static_class_.IsNull()); 57 static_class_ = GcRoot<Class>(nullptr); 58 } 59 60 void MethodHandleImpl::VisitRoots(RootVisitor* visitor) { 61 static_class_.VisitRootIfNonNull(visitor, RootInfo(kRootStickyClass)); 62 } 63 64 mirror::MethodHandleImpl* MethodHandleImpl::Create(Thread* const self, 65 uintptr_t art_field_or_method, 66 MethodHandle::Kind kind, 67 Handle<MethodType> method_type) 68 REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_) { 69 StackHandleScope<1> hs(self); 70 Handle<mirror::MethodHandleImpl> mh( 71 hs.NewHandle(ObjPtr<MethodHandleImpl>::DownCast(StaticClass()->AllocObject(self)))); 72 mh->Initialize(art_field_or_method, kind, method_type); 73 return mh.Get(); 74 } 75 76 } // namespace mirror 77 } // namespace art 78
