From cad810f21b803229eb11403f9209855525a25d57 Mon Sep 17 00:00:00 2001 From: Steve Block Date: Fri, 6 May 2011 11:45:16 +0100 Subject: Merge WebKit at r75315: Initial merge by git. Change-Id: I570314b346ce101c935ed22a626b48c2af266b84 --- Source/JavaScriptCore/runtime/RegExpCache.h | 68 +++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Source/JavaScriptCore/runtime/RegExpCache.h (limited to 'Source/JavaScriptCore/runtime/RegExpCache.h') diff --git a/Source/JavaScriptCore/runtime/RegExpCache.h b/Source/JavaScriptCore/runtime/RegExpCache.h new file mode 100644 index 0000000..b5b637f --- /dev/null +++ b/Source/JavaScriptCore/runtime/RegExpCache.h @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2010 University of Szeged + * Copyright (C) 2010 Renata Hodovan (hodovan@inf.u-szeged.hu) + * 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 UNIVERSITY OF SZEGED ``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 UNIVERSITY OF SZEGED 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 "RegExp.h" +#include "RegExpKey.h" +#include "UString.h" +#include +#include + +#ifndef RegExpCache_h +#define RegExpCache_h + +namespace JSC { + +class RegExpCache { + +typedef HashMap > RegExpCacheMap; + +public: + PassRefPtr lookupOrCreate(const UString& patternString, const UString& flags); + PassRefPtr create(const UString& patternString, const UString& flags, RegExpCacheMap::iterator iterator); + RegExpCache(JSGlobalData* globalData); + +private: + static const unsigned maxCacheablePatternLength = 256; + +#if PLATFORM(IOS) + // The RegExpCache can currently hold onto multiple Mb of memory; + // as a short-term fix some embedded platforms may wish to reduce the cache size. + static const int maxCacheableEntries = 32; +#else + static const int maxCacheableEntries = 256; +#endif + + FixedArray patternKeyArray; + RegExpCacheMap m_cacheMap; + JSGlobalData* m_globalData; + int m_nextKeyToEvict; + bool m_isFull; +}; + +} // namespace JSC + +#endif // RegExpCache_h -- cgit v1.1