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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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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.
*/
#include "config.h"
#include "JSDestructibleObject.h"
#include "JSCellInlines.h"
#include "SymbolTable.h"
namespace JSC {
const ClassInfo SharedSymbolTable::s_info = { "SharedSymbolTable", 0, 0, 0, CREATE_METHOD_TABLE(SharedSymbolTable) };
SymbolTableEntry& SymbolTableEntry::copySlow(const SymbolTableEntry& other)
{
ASSERT(other.isFat());
FatEntry* newFatEntry = new FatEntry(*other.fatEntry());
freeFatEntry();
m_bits = bitwise_cast<intptr_t>(newFatEntry);
return *this;
}
void SharedSymbolTable::destroy(JSCell* cell)
{
SharedSymbolTable* thisObject = jsCast<SharedSymbolTable*>(cell);
thisObject->SharedSymbolTable::~SharedSymbolTable();
}
void SymbolTableEntry::freeFatEntrySlow()
{
ASSERT(isFat());
delete fatEntry();
}
bool SymbolTableEntry::couldBeWatched()
{
if (!isFat())
return false;
WatchpointSet* watchpoints = fatEntry()->m_watchpoints.get();
if (!watchpoints)
return false;
return watchpoints->isStillValid();
}
void SymbolTableEntry::attemptToWatch()
{
FatEntry* entry = inflate();
if (!entry->m_watchpoints)
entry->m_watchpoints = adoptRef(new WatchpointSet(InitializedWatching));
}
bool* SymbolTableEntry::addressOfIsWatched()
{
ASSERT(couldBeWatched());
return fatEntry()->m_watchpoints->addressOfIsWatched();
}
void SymbolTableEntry::addWatchpoint(Watchpoint* watchpoint)
{
ASSERT(couldBeWatched());
fatEntry()->m_watchpoints->add(watchpoint);
}
void SymbolTableEntry::notifyWriteSlow()
{
WatchpointSet* watchpoints = fatEntry()->m_watchpoints.get();
if (!watchpoints)
return;
watchpoints->notifyWrite();
}
SymbolTableEntry::FatEntry* SymbolTableEntry::inflateSlow()
{
FatEntry* entry = new FatEntry(m_bits);
m_bits = bitwise_cast<intptr_t>(entry);
return entry;
}
} // namespace JSC
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