| | 1 | /* |
| | 2 | * Copyright (C) 2010 University of Szeged |
| | 3 | * Copyright (C) 2010 Renata Hodovan (hodovan@inf.u-szeged.hu) |
| | 4 | * All rights reserved. |
| | 5 | * |
| | 6 | * Redistribution and use in source and binary forms, with or without |
| | 7 | * modification, are permitted provided that the following conditions |
| | 8 | * are met: |
| | 9 | * 1. Redistributions of source code must retain the above copyright |
| | 10 | * notice, this list of conditions and the following disclaimer. |
| | 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 12 | * notice, this list of conditions and the following disclaimer in the |
| | 13 | * documentation and/or other materials provided with the distribution. |
| | 14 | * |
| | 15 | * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY |
| | 16 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| | 18 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR |
| | 19 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| | 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| | 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| | 22 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| | 23 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| | 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| | 25 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| | 26 | */ |
| | 27 | |
| | 28 | #include "RegExp.h" |
| | 29 | #include "RegExpKey.h" |
| | 30 | #include "Strong.h" |
| | 31 | #include "Weak.h" |
| | 32 | #include "WeakInlines.h" |
| | 33 | #include <wtf/FixedArray.h> |
| | 34 | #include <wtf/HashMap.h> |
| | 35 | |
| | 36 | #ifndef RegExpCache_h |
| | 37 | #define RegExpCache_h |
| | 38 | |
| | 39 | namespace JSC { |
| | 40 | |
| | 41 | class RegExpCache : private WeakHandleOwner { |
| | 42 | friend class RegExp; |
| | 43 | typedef HashMap<RegExpKey, Weak<RegExp> > RegExpCacheMap; |
| | 44 | |
| | 45 | public: |
| | 46 | RegExpCache(VM* vm); |
| | 47 | void invalidateCode(); |
| | 48 | |
| | 49 | private: |
| | 50 | |
| | 51 | static const unsigned maxStrongCacheablePatternLength = 256; |
| | 52 | |
| | 53 | static const int maxStrongCacheableEntries = 32; |
| | 54 | |
| | 55 | virtual void finalize(Handle<Unknown>, void* context); |
| | 56 | |
| | 57 | RegExp* lookupOrCreate(const WTF::String& patternString, RegExpFlags); |
| | 58 | void addToStrongCache(RegExp*); |
| | 59 | RegExpCacheMap m_weakCache; // Holds all regular expressions currently live. |
| | 60 | int m_nextEntryInStrongCache; |
| | 61 | WTF::FixedArray<Strong<RegExp>, maxStrongCacheableEntries> m_strongCache; // Holds a select few regular expressions that have compiled and executed |
| | 62 | VM* m_vm; |
| | 63 | }; |
| | 64 | |
| | 65 | } // namespace JSC |
| | 66 | |
| | 67 | #endif // RegExpCache_h |
projects / apple / javascriptcore.git / blame_incremental