File: CSSValuePool.cpp

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/*
 * Copyright (C) 2011, 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.
 */

#include "core/css/CSSValuePool.h"

#include "platform/heap/Handle.h"
#include "wtf/Threading.h"

namespace blink {

CSSValuePool& cssValuePool() {
  DEFINE_THREAD_SAFE_STATIC_LOCAL(
      ThreadSpecific<Persistent<CSSValuePool>>, threadSpecificPool,
      new ThreadSpecific<Persistent<CSSValuePool>>());
  Persistent<CSSValuePool>& poolHandle = *threadSpecificPool;
  if (!poolHandle) {
    poolHandle = new CSSValuePool;
    poolHandle.registerAsStaticReference();
  }
  return *poolHandle;
}

CSSValuePool::CSSValuePool()
    : m_inheritedValue(new CSSInheritedValue),
      m_initialValue(new CSSInitialValue()),
      m_unsetValue(new CSSUnsetValue),
      m_colorTransparent(new CSSColorValue(Color::transparent)),
      m_colorWhite(new CSSColorValue(Color::white)),
      m_colorBlack(new CSSColorValue(Color::black)) {
  m_identifierValueCache.resize(numCSSValueKeywords);
  m_pixelValueCache.resize(maximumCacheableIntegerValue + 1);
  m_percentValueCache.resize(maximumCacheableIntegerValue + 1);
  m_numberValueCache.resize(maximumCacheableIntegerValue + 1);
}

DEFINE_TRACE(CSSValuePool) {
  visitor->trace(m_inheritedValue);
  visitor->trace(m_initialValue);
  visitor->trace(m_unsetValue);
  visitor->trace(m_colorTransparent);
  visitor->trace(m_colorWhite);
  visitor->trace(m_colorBlack);
  visitor->trace(m_identifierValueCache);
  visitor->trace(m_pixelValueCache);
  visitor->trace(m_percentValueCache);
  visitor->trace(m_numberValueCache);
  visitor->trace(m_colorValueCache);
  visitor->trace(m_fontFaceValueCache);
  visitor->trace(m_fontFamilyValueCache);
}

}  // namespace blink