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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-27 06:07:23 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-27 06:07:23 +0000 |
commit | 1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c (patch) | |
tree | 46dcd36c86e7fbc6e5df36deb463b33e9967a6f7 /Source/JavaScriptCore/bytecode/EvalCodeCache.h | |
parent | 32761a6cee1d0dee366b885b7b9c777e67885688 (diff) | |
download | WebKitGtk-tarball-master.tar.gz |
webkitgtk-2.16.5HEADwebkitgtk-2.16.5master
Diffstat (limited to 'Source/JavaScriptCore/bytecode/EvalCodeCache.h')
-rw-r--r-- | Source/JavaScriptCore/bytecode/EvalCodeCache.h | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/Source/JavaScriptCore/bytecode/EvalCodeCache.h b/Source/JavaScriptCore/bytecode/EvalCodeCache.h deleted file mode 100644 index ff5911240..000000000 --- a/Source/JavaScriptCore/bytecode/EvalCodeCache.h +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Copyright (C) 2008, 2009 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. - */ - -#ifndef EvalCodeCache_h -#define EvalCodeCache_h - -#include "Executable.h" -#include "JSGlobalObject.h" -#include "SourceCode.h" -#include <wtf/HashMap.h> -#include <wtf/RefPtr.h> -#include <wtf/text/StringHash.h> - -namespace JSC { - - class SlotVisitor; - - class EvalCodeCache { - public: - EvalExecutable* tryGet(bool inStrictContext, const String& evalSource, JSScope* scope) - { - if (!inStrictContext && evalSource.length() < maxCacheableSourceLength && scope->begin()->isVariableObject()) - return m_cacheMap.get(evalSource.impl()).get(); - return 0; - } - - EvalExecutable* getSlow(ExecState* exec, ScriptExecutable* owner, bool inStrictContext, const String& evalSource, JSScope* scope) - { - EvalExecutable* evalExecutable = EvalExecutable::create(exec, makeSource(evalSource), inStrictContext); - if (!evalExecutable) - return 0; - - if (!inStrictContext && evalSource.length() < maxCacheableSourceLength && scope->begin()->isVariableObject() && m_cacheMap.size() < maxCacheEntries) - m_cacheMap.set(evalSource.impl(), WriteBarrier<EvalExecutable>(exec->vm(), owner, evalExecutable)); - - return evalExecutable; - } - - bool isEmpty() const { return m_cacheMap.isEmpty(); } - - void visitAggregate(SlotVisitor&); - - void clear() - { - m_cacheMap.clear(); - } - - private: - static const unsigned maxCacheableSourceLength = 256; - static const int maxCacheEntries = 64; - - typedef HashMap<RefPtr<StringImpl>, WriteBarrier<EvalExecutable>> EvalCacheMap; - EvalCacheMap m_cacheMap; - }; - -} // namespace JSC - -#endif // EvalCodeCache_h |