87 lines
2.8 KiB
C++
87 lines
2.8 KiB
C++
/*
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* Copyright (C) 2012 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_RUNTIME_GC_ACCOUNTING_HEAP_BITMAP_H_
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#define ART_RUNTIME_GC_ACCOUNTING_HEAP_BITMAP_H_
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#include <android-base/logging.h>
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#include "base/allocator.h"
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#include "base/locks.h"
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#include "base/macros.h"
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#include "space_bitmap.h"
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namespace art {
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namespace gc {
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class Heap;
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namespace collector {
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class ConcurrentCopying;
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} // namespace collector
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namespace accounting {
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class HeapBitmap {
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public:
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bool Test(const mirror::Object* obj) REQUIRES_SHARED(Locks::heap_bitmap_lock_);
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void Clear(const mirror::Object* obj) REQUIRES(Locks::heap_bitmap_lock_);
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template<typename LargeObjectSetVisitor>
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bool Set(const mirror::Object* obj, const LargeObjectSetVisitor& visitor)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(Locks::heap_bitmap_lock_) ALWAYS_INLINE;
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template<typename LargeObjectSetVisitor>
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bool AtomicTestAndSet(const mirror::Object* obj, const LargeObjectSetVisitor& visitor)
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REQUIRES_SHARED(Locks::mutator_lock_)
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REQUIRES(Locks::heap_bitmap_lock_) ALWAYS_INLINE;
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ContinuousSpaceBitmap* GetContinuousSpaceBitmap(const mirror::Object* obj) const;
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LargeObjectBitmap* GetLargeObjectBitmap(const mirror::Object* obj) const;
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template <typename Visitor>
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ALWAYS_INLINE void Visit(Visitor&& visitor)
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REQUIRES(Locks::heap_bitmap_lock_)
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REQUIRES_SHARED(Locks::mutator_lock_);
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explicit HeapBitmap(Heap* heap) : heap_(heap) {}
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private:
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const Heap* const heap_;
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void AddContinuousSpaceBitmap(ContinuousSpaceBitmap* bitmap);
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void RemoveContinuousSpaceBitmap(ContinuousSpaceBitmap* bitmap);
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void AddLargeObjectBitmap(LargeObjectBitmap* bitmap);
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void RemoveLargeObjectBitmap(LargeObjectBitmap* bitmap);
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// Bitmaps covering continuous spaces.
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std::vector<ContinuousSpaceBitmap*,
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TrackingAllocator<ContinuousSpaceBitmap*, kAllocatorTagHeapBitmap>>
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continuous_space_bitmaps_;
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// Sets covering discontinuous spaces.
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std::vector<LargeObjectBitmap*,
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TrackingAllocator<LargeObjectBitmap*, kAllocatorTagHeapBitmapLOS>>
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large_object_bitmaps_;
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friend class art::gc::Heap;
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friend class art::gc::collector::ConcurrentCopying;
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};
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} // namespace accounting
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} // namespace gc
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} // namespace art
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#endif // ART_RUNTIME_GC_ACCOUNTING_HEAP_BITMAP_H_
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