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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_MIRROR_IFTABLE_H_
#define ART_RUNTIME_MIRROR_IFTABLE_H_
#include "base/casts.h"
#include "object_array.h"
namespace art {
namespace mirror {
class MANAGED IfTable FINAL : public ObjectArray<Object> {
public:
ALWAYS_INLINE Class* GetInterface(int32_t i) SHARED_REQUIRES(Locks::mutator_lock_) {
Class* interface = GetWithoutChecks((i * kMax) + kInterface)->AsClass();
DCHECK(interface != nullptr);
return interface;
}
ALWAYS_INLINE void SetInterface(int32_t i, Class* interface)
SHARED_REQUIRES(Locks::mutator_lock_);
template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
PointerArray* GetMethodArray(int32_t i) SHARED_REQUIRES(Locks::mutator_lock_) {
auto* method_array = down_cast<PointerArray*>(Get<kVerifyFlags, kReadBarrierOption>(
(i * kMax) + kMethodArray));
DCHECK(method_array != nullptr);
return method_array;
}
size_t GetMethodArrayCount(int32_t i) SHARED_REQUIRES(Locks::mutator_lock_) {
auto* method_array = down_cast<PointerArray*>(Get((i * kMax) + kMethodArray));
return method_array == nullptr ? 0u : method_array->GetLength();
}
void SetMethodArray(int32_t i, PointerArray* arr) SHARED_REQUIRES(Locks::mutator_lock_) {
DCHECK(arr != nullptr);
auto idx = i * kMax + kMethodArray;
DCHECK(Get(idx) == nullptr);
Set<false>(idx, arr);
}
size_t Count() SHARED_REQUIRES(Locks::mutator_lock_) {
return GetLength() / kMax;
}
enum {
// Points to the interface class.
kInterface = 0,
// Method pointers into the vtable, allow fast map from interface method index to concrete
// instance method.
kMethodArray = 1,
kMax = 2,
};
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(IfTable);
};
} // namespace mirror
} // namespace art
#endif // ART_RUNTIME_MIRROR_IFTABLE_H_