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/*
* Copyright (C) 2016-2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "CellContainer.h"
#include "HeapCell.h"
#include "PreciseAllocation.h"
#include "VM.h"
namespace JSC {
ALWAYS_INLINE bool HeapCell::isPreciseAllocation() const
{
return PreciseAllocation::isPreciseAllocation(const_cast<HeapCell*>(this));
}
ALWAYS_INLINE CellContainer HeapCell::cellContainer() const
{
if (isPreciseAllocation())
return preciseAllocation();
return markedBlock();
}
ALWAYS_INLINE MarkedBlock& HeapCell::markedBlock() const
{
return *MarkedBlock::blockFor(this);
}
ALWAYS_INLINE PreciseAllocation& HeapCell::preciseAllocation() const
{
return *PreciseAllocation::fromCell(const_cast<HeapCell*>(this));
}
ALWAYS_INLINE JSC::Heap* HeapCell::heap() const
{
return &vm().heap;
}
ALWAYS_INLINE VM& HeapCell::vm() const
{
if (isPreciseAllocation())
return preciseAllocation().vm();
return markedBlock().vm();
}
ALWAYS_INLINE size_t HeapCell::cellSize() const
{
if (isPreciseAllocation())
return preciseAllocation().cellSize();
return markedBlock().cellSize();
}
ALWAYS_INLINE CellAttributes HeapCell::cellAttributes() const
{
if (isPreciseAllocation())
return preciseAllocation().attributes();
return markedBlock().attributes();
}
ALWAYS_INLINE DestructionMode HeapCell::destructionMode() const
{
return cellAttributes().destruction;
}
ALWAYS_INLINE HeapCell::Kind HeapCell::cellKind() const
{
return cellAttributes().cellKind;
}
ALWAYS_INLINE Subspace* HeapCell::subspace() const
{
if (isPreciseAllocation())
return preciseAllocation().subspace();
return markedBlock().subspace();
}
ALWAYS_INLINE void HeapCell::notifyNeedsDestruction() const
{
ASSERT(!isPreciseAllocation());
ASSERT(destructionMode() == MayNeedDestruction);
markedBlock().handle().setIsDestructible(true);
}
} // namespace JSC
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