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/*
* Copyright (C) 2024 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 "config.h"
#include "StyleSheetContentsCache.h"
#include "StyleSheetContents.h"
namespace WebCore {
namespace Style {
StyleSheetContentsCache::StyleSheetContentsCache() = default;
StyleSheetContentsCache& StyleSheetContentsCache::singleton()
{
static NeverDestroyed<StyleSheetContentsCache> cache;
return cache.get();
}
RefPtr<StyleSheetContents> StyleSheetContentsCache::get(const Key& key)
{
return m_cache.get(key);
}
void StyleSheetContentsCache::add(Key&& key, Ref<StyleSheetContents> contents)
{
ASSERT(contents->isCacheable());
m_cache.add(WTFMove(key), contents);
contents->addedToMemoryCache();
static constexpr auto maximumCacheSize = 256;
if (m_cache.size() > maximumCacheSize) {
auto toRemove = m_cache.random();
toRemove->value->removedFromMemoryCache();
m_cache.remove(toRemove);
}
}
void StyleSheetContentsCache::clear()
{
m_cache.clear();
}
}
}
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