Orion Hodson | c069a30 | 2017-01-18 09:23:12 +0000 | [diff] [blame] | 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_METHOD_HANDLES_LOOKUP_H_ |
| 18 | #define ART_RUNTIME_MIRROR_METHOD_HANDLES_LOOKUP_H_ |
| 19 | |
Orion Hodson | c069a30 | 2017-01-18 09:23:12 +0000 | [diff] [blame] | 20 | #include "gc_root.h" |
Orion Hodson | c069a30 | 2017-01-18 09:23:12 +0000 | [diff] [blame] | 21 | #include "handle.h" |
Andreas Gampe | 8cf9cb3 | 2017-07-19 09:28:38 -0700 | [diff] [blame^] | 22 | #include "obj_ptr.h" |
| 23 | #include "object.h" |
Orion Hodson | c069a30 | 2017-01-18 09:23:12 +0000 | [diff] [blame] | 24 | #include "utils.h" |
| 25 | |
| 26 | namespace art { |
| 27 | |
| 28 | struct MethodHandlesLookupOffsets; |
| 29 | class RootVisitor; |
| 30 | |
| 31 | namespace mirror { |
| 32 | |
Orion Hodson | f8db2c3 | 2017-07-07 20:07:12 +0100 | [diff] [blame] | 33 | class MethodHandle; |
| 34 | class MethodType; |
| 35 | |
Orion Hodson | c069a30 | 2017-01-18 09:23:12 +0000 | [diff] [blame] | 36 | // C++ mirror of java.lang.invoke.MethodHandles.Lookup |
| 37 | class MANAGED MethodHandlesLookup : public Object { |
| 38 | public: |
| 39 | static mirror::MethodHandlesLookup* Create(Thread* const self, |
| 40 | Handle<Class> lookup_class) |
| 41 | REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_); |
| 42 | |
| 43 | static mirror::Class* StaticClass() REQUIRES_SHARED(Locks::mutator_lock_) { |
| 44 | return static_class_.Read(); |
| 45 | } |
| 46 | |
| 47 | static void SetClass(Class* klass) REQUIRES_SHARED(Locks::mutator_lock_); |
| 48 | static void ResetClass() REQUIRES_SHARED(Locks::mutator_lock_); |
| 49 | static void VisitRoots(RootVisitor* visitor) REQUIRES_SHARED(Locks::mutator_lock_); |
| 50 | |
Orion Hodson | f8db2c3 | 2017-07-07 20:07:12 +0100 | [diff] [blame] | 51 | // Returns the result of java.lang.invoke.MethodHandles.lookup(). |
| 52 | static mirror::MethodHandlesLookup* GetDefault(Thread* const self) |
| 53 | REQUIRES_SHARED(Locks::mutator_lock_); |
| 54 | |
| 55 | // Find constructor using java.lang.invoke.MethodHandles$Lookup.findConstructor(). |
| 56 | mirror::MethodHandle* FindConstructor(Thread* const self, |
| 57 | Handle<Class> klass, |
| 58 | Handle<MethodType> method_type) |
| 59 | REQUIRES_SHARED(Locks::mutator_lock_); |
| 60 | |
Orion Hodson | c069a30 | 2017-01-18 09:23:12 +0000 | [diff] [blame] | 61 | private: |
| 62 | static MemberOffset AllowedModesOffset() { |
| 63 | return MemberOffset(OFFSETOF_MEMBER(MethodHandlesLookup, allowed_modes_)); |
| 64 | } |
| 65 | |
| 66 | static MemberOffset LookupClassOffset() { |
| 67 | return MemberOffset(OFFSETOF_MEMBER(MethodHandlesLookup, lookup_class_)); |
| 68 | } |
| 69 | |
| 70 | HeapReference<mirror::Class> lookup_class_; |
| 71 | |
| 72 | int32_t allowed_modes_; |
| 73 | |
| 74 | static GcRoot<mirror::Class> static_class_; // java.lang.invoke.MethodHandles.Lookup.class |
| 75 | |
| 76 | friend struct art::MethodHandlesLookupOffsets; // for verifying offset information |
| 77 | DISALLOW_IMPLICIT_CONSTRUCTORS(MethodHandlesLookup); |
| 78 | }; |
| 79 | |
| 80 | } // namespace mirror |
| 81 | } // namespace art |
| 82 | |
| 83 | #endif // ART_RUNTIME_MIRROR_METHOD_HANDLES_LOOKUP_H_ |