// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_HEAP_HEAP_WRITE_BARRIER_H_
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#define V8_HEAP_HEAP_WRITE_BARRIER_H_
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namespace v8 {
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namespace internal {
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class Code;
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class FixedArray;
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class Heap;
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class HeapObject;
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class MaybeObject;
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class Object;
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class RelocInfo;
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// Note: In general it is preferred to use the macros defined in
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// object-macros.h.
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// Write barrier for FixedArray elements.
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#define FIXED_ARRAY_ELEMENTS_WRITE_BARRIER(heap, array, start, length) \
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do { \
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GenerationalBarrierForElements(heap, array, start, length); \
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MarkingBarrierForElements(heap, array); \
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} while (false)
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// Combined write barriers.
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void WriteBarrierForCode(Code* host, RelocInfo* rinfo, Object* value);
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void WriteBarrierForCode(Code* host);
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// Generational write barrier.
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void GenerationalBarrier(HeapObject* object, Object** slot, Object* value);
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void GenerationalBarrier(HeapObject* object, MaybeObject** slot,
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MaybeObject* value);
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void GenerationalBarrierForElements(Heap* heap, FixedArray* array, int offset,
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int length);
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void GenerationalBarrierForCode(Code* host, RelocInfo* rinfo,
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HeapObject* object);
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// Marking write barrier.
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void MarkingBarrier(HeapObject* object, Object** slot, Object* value);
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void MarkingBarrier(HeapObject* object, MaybeObject** slot, MaybeObject* value);
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void MarkingBarrierForElements(Heap* heap, HeapObject* object);
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void MarkingBarrierForCode(Code* host, RelocInfo* rinfo, HeapObject* object);
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} // namespace internal
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} // namespace v8
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#endif // V8_HEAP_HEAP_WRITE_BARRIER_H_
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