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 #include "method_handles_lookup.h" 18 19 #include "class-inl.h" 20 #include "gc_root-inl.h" 21 #include "object-inl.h" 22 #include "handle_scope.h" 23 #include "modifiers.h" 24 25 namespace art { 26 namespace mirror { 27 28 GcRoot<mirror::Class> MethodHandlesLookup::static_class_; 29 SetClass(Class * klass)30void MethodHandlesLookup::SetClass(Class* klass) { 31 CHECK(static_class_.IsNull()) << static_class_.Read() << " " << klass; 32 CHECK(klass != nullptr); 33 static_class_ = GcRoot<Class>(klass); 34 } 35 ResetClass()36void MethodHandlesLookup::ResetClass() { 37 CHECK(!static_class_.IsNull()); 38 static_class_ = GcRoot<Class>(nullptr); 39 } 40 VisitRoots(RootVisitor * visitor)41void MethodHandlesLookup::VisitRoots(RootVisitor* visitor) { 42 static_class_.VisitRootIfNonNull(visitor, RootInfo(kRootStickyClass)); 43 } 44 Create(Thread * const self,Handle<Class> lookup_class)45MethodHandlesLookup* MethodHandlesLookup::Create(Thread* const self, Handle<Class> lookup_class) 46 REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_) { 47 static constexpr uint32_t kAllModes = kAccPublic | kAccPrivate | kAccProtected | kAccStatic; 48 49 StackHandleScope<1> hs(self); 50 Handle<MethodHandlesLookup> mhl( 51 hs.NewHandle(ObjPtr<MethodHandlesLookup>::DownCast(StaticClass()->AllocObject(self)))); 52 mhl->SetFieldObject<false>(LookupClassOffset(), lookup_class.Get()); 53 mhl->SetField32<false>(AllowedModesOffset(), kAllModes); 54 return mhl.Get(); 55 } 56 57 } // namespace mirror 58 } // namespace art 59