/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_COMPILER_OPTIMIZING_INTRINSIC_OBJECTS_H_
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#define ART_COMPILER_OPTIMIZING_INTRINSIC_OBJECTS_H_
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#include "base/bit_field.h"
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#include "base/bit_utils.h"
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#include "base/mutex.h"
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namespace art {
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class ClassLinker;
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template <class MirrorType> class ObjPtr;
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class MemberOffset;
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class Thread;
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namespace mirror {
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class Object;
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template <class T> class ObjectArray;
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} // namespace mirror
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class IntrinsicObjects {
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public:
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enum class PatchType {
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kIntegerValueOfObject,
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kIntegerValueOfArray,
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kLast = kIntegerValueOfArray
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};
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static uint32_t EncodePatch(PatchType patch_type, uint32_t index = 0u) {
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DCHECK(patch_type == PatchType::kIntegerValueOfObject || index == 0u);
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return PatchTypeField::Encode(static_cast<uint32_t>(patch_type)) | IndexField::Encode(index);
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}
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static PatchType DecodePatchType(uint32_t intrinsic_data) {
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return static_cast<PatchType>(PatchTypeField::Decode(intrinsic_data));
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}
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static uint32_t DecodePatchIndex(uint32_t intrinsic_data) {
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return IndexField::Decode(intrinsic_data);
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}
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static ObjPtr<mirror::ObjectArray<mirror::Object>> AllocateBootImageLiveObjects(
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Thread* self,
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ClassLinker* class_linker) REQUIRES_SHARED(Locks::mutator_lock_);
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// Functions for retrieving data for Integer.valueOf().
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static ObjPtr<mirror::ObjectArray<mirror::Object>> GetIntegerValueOfCache(
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ObjPtr<mirror::ObjectArray<mirror::Object>> boot_image_live_objects)
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REQUIRES_SHARED(Locks::mutator_lock_);
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static ObjPtr<mirror::Object> GetIntegerValueOfObject(
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ObjPtr<mirror::ObjectArray<mirror::Object>> boot_image_live_objects,
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uint32_t index) REQUIRES_SHARED(Locks::mutator_lock_);
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static MemberOffset GetIntegerValueOfArrayDataOffset(
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ObjPtr<mirror::ObjectArray<mirror::Object>> boot_image_live_objects)
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REQUIRES_SHARED(Locks::mutator_lock_);
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private:
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static constexpr size_t kPatchTypeBits =
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MinimumBitsToStore(static_cast<uint32_t>(PatchType::kLast));
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static constexpr size_t kIndexBits = BitSizeOf<uint32_t>() - kPatchTypeBits;
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using PatchTypeField = BitField<uint32_t, 0u, kPatchTypeBits>;
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using IndexField = BitField<uint32_t, kPatchTypeBits, kIndexBits>;
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};
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} // namespace art
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#endif // ART_COMPILER_OPTIMIZING_INTRINSIC_OBJECTS_H_
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