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/*
* Copyright (C) 2013, 2014 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.
*/
#include "config.h"
#include "PropertyMapHashTable.h"
#include "JSCInlines.h"
namespace JSC {
const ClassInfo PropertyTable::s_info = { "PropertyTable", 0, 0, CREATE_METHOD_TABLE(PropertyTable) };
PropertyTable* PropertyTable::create(VM& vm, unsigned initialCapacity)
{
PropertyTable* table = new (NotNull, allocateCell<PropertyTable>(vm.heap)) PropertyTable(vm, initialCapacity);
table->finishCreation(vm);
return table;
}
PropertyTable* PropertyTable::clone(VM& vm, const PropertyTable& other)
{
PropertyTable* table = new (NotNull, allocateCell<PropertyTable>(vm.heap)) PropertyTable(vm, other);
table->finishCreation(vm);
return table;
}
PropertyTable* PropertyTable::clone(VM& vm, unsigned initialCapacity, const PropertyTable& other)
{
PropertyTable* table = new (NotNull, allocateCell<PropertyTable>(vm.heap)) PropertyTable(vm, initialCapacity, other);
table->finishCreation(vm);
return table;
}
PropertyTable::PropertyTable(VM& vm, unsigned initialCapacity)
: JSCell(vm, vm.propertyTableStructure.get())
, m_indexSize(sizeForCapacity(initialCapacity))
, m_indexMask(m_indexSize - 1)
, m_index(static_cast<unsigned*>(fastZeroedMalloc(dataSize())))
, m_keyCount(0)
, m_deletedCount(0)
{
ASSERT(isPowerOf2(m_indexSize));
}
PropertyTable::PropertyTable(VM& vm, const PropertyTable& other)
: JSCell(vm, vm.propertyTableStructure.get())
, m_indexSize(other.m_indexSize)
, m_indexMask(other.m_indexMask)
, m_index(static_cast<unsigned*>(fastMalloc(dataSize())))
, m_keyCount(other.m_keyCount)
, m_deletedCount(other.m_deletedCount)
{
ASSERT(isPowerOf2(m_indexSize));
memcpy(m_index, other.m_index, dataSize());
iterator end = this->end();
for (iterator iter = begin(); iter != end; ++iter)
iter->key->ref();
// Copy the m_deletedOffsets vector.
Vector<PropertyOffset>* otherDeletedOffsets = other.m_deletedOffsets.get();
if (otherDeletedOffsets)
m_deletedOffsets = std::make_unique<Vector<PropertyOffset>>(*otherDeletedOffsets);
}
PropertyTable::PropertyTable(VM& vm, unsigned initialCapacity, const PropertyTable& other)
: JSCell(vm, vm.propertyTableStructure.get())
, m_indexSize(sizeForCapacity(initialCapacity))
, m_indexMask(m_indexSize - 1)
, m_index(static_cast<unsigned*>(fastZeroedMalloc(dataSize())))
, m_keyCount(0)
, m_deletedCount(0)
{
ASSERT(isPowerOf2(m_indexSize));
ASSERT(initialCapacity >= other.m_keyCount);
const_iterator end = other.end();
for (const_iterator iter = other.begin(); iter != end; ++iter) {
ASSERT(canInsert());
reinsert(*iter);
iter->key->ref();
}
// Copy the m_deletedOffsets vector.
Vector<PropertyOffset>* otherDeletedOffsets = other.m_deletedOffsets.get();
if (otherDeletedOffsets)
m_deletedOffsets = std::make_unique<Vector<PropertyOffset>>(*otherDeletedOffsets);
}
void PropertyTable::destroy(JSCell* cell)
{
static_cast<PropertyTable*>(cell)->PropertyTable::~PropertyTable();
}
PropertyTable::~PropertyTable()
{
iterator end = this->end();
for (iterator iter = begin(); iter != end; ++iter)
iter->key->deref();
fastFree(m_index);
}
} // namespace JSC
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