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/*
* Copyright (C) 2012 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#ifndef CopyVisitorInlines_h
#define CopyVisitorInlines_h
#include "ClassInfo.h"
#include "CopyVisitor.h"
#include "GCThreadSharedData.h"
#include "JSCell.h"
#include "JSDestructibleObject.h"
namespace JSC {
inline void CopyVisitor::visitCell(JSCell* cell)
{
ASSERT(cell->structure()->classInfo()->methodTable.copyBackingStore == JSObject::copyBackingStore);
JSObject::copyBackingStore(cell, *this);
}
inline bool CopyVisitor::checkIfShouldCopy(void* oldPtr)
{
CopiedBlock* block = CopiedSpace::blockFor(oldPtr);
if (block->isOversize() || block->isPinned())
return false;
return true;
}
inline void* CopyVisitor::allocateNewSpace(size_t bytes)
{
void* result = 0; // Compilers don't realize that this will be assigned.
if (LIKELY(m_copiedAllocator.tryAllocate(bytes, &result)))
return result;
result = allocateNewSpaceSlow(bytes);
ASSERT(result);
return result;
}
inline void* CopyVisitor::allocateNewSpaceSlow(size_t bytes)
{
CopiedBlock* newBlock = 0;
m_shared.m_copiedSpace->doneFillingBlock(m_copiedAllocator.resetCurrentBlock(), &newBlock);
m_copiedAllocator.setCurrentBlock(newBlock);
void* result = 0;
CheckedBoolean didSucceed = m_copiedAllocator.tryAllocate(bytes, &result);
ASSERT(didSucceed);
return result;
}
inline void CopyVisitor::startCopying()
{
ASSERT(!m_copiedAllocator.isValid());
CopiedBlock* block = 0;
m_shared.m_copiedSpace->doneFillingBlock(m_copiedAllocator.resetCurrentBlock(), &block);
m_copiedAllocator.setCurrentBlock(block);
}
inline void CopyVisitor::doneCopying()
{
if (!m_copiedAllocator.isValid())
return;
m_shared.m_copiedSpace->doneFillingBlock(m_copiedAllocator.resetCurrentBlock(), 0);
}
inline void CopyVisitor::didCopy(void* ptr, size_t bytes)
{
CopiedBlock* block = CopiedSpace::blockFor(ptr);
ASSERT(!block->isOversize());
ASSERT(!block->isPinned());
block->didEvacuateBytes(bytes);
}
} // namespace JSC
#endif // CopyVisitorInlines_h
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