blob: 26be0410cab4076ff5ed7150b18f0df7d0291020 [file] [log] [blame]
/*
* Copyright (C) 2009, 2010 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 "ParserArena.h"
#include "Nodes.h"
#include "JSCInlines.h"
namespace JSC {
DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(IdentifierArena);
DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(ParserArena);
ParserArena::ParserArena()
: m_freeableMemory(0)
, m_freeablePoolEnd(0)
{
}
inline void* ParserArena::freeablePool()
{
ASSERT(m_freeablePoolEnd);
return m_freeablePoolEnd - freeablePoolSize;
}
inline void ParserArena::deallocateObjects()
{
size_t size = m_deletableObjects.size();
for (size_t i = 0; i < size; ++i)
m_deletableObjects[i]->~ParserArenaDeletable();
if (m_freeablePoolEnd)
ParserArenaMalloc::free(freeablePool());
size = m_freeablePools.size();
for (size_t i = 0; i < size; ++i)
ParserArenaMalloc::free(m_freeablePools[i]);
}
ParserArena::~ParserArena()
{
deallocateObjects();
}
void ParserArena::allocateFreeablePool()
{
if (m_freeablePoolEnd)
m_freeablePools.append(freeablePool());
char* pool = static_cast<char*>(ParserArenaMalloc::malloc(freeablePoolSize));
m_freeableMemory = pool;
m_freeablePoolEnd = pool + freeablePoolSize;
ASSERT(freeablePool() == pool);
}
}