1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef StyleResolverStats_h 32 #define StyleResolverStats_h 33 34 #include "wtf/PassOwnPtr.h" 35 #include "wtf/text/WTFString.h" 36 37 namespace blink { 38 39 class StyleResolverStats { 40 public: create()41 static PassOwnPtr<StyleResolverStats> create() 42 { 43 return adoptPtr(new StyleResolverStats); 44 } 45 46 void reset(); 47 String report() const; 48 49 unsigned sharedStyleLookups; 50 unsigned sharedStyleCandidates; 51 unsigned sharedStyleFound; 52 unsigned sharedStyleMissed; 53 unsigned sharedStyleRejectedByUncommonAttributeRules; 54 unsigned sharedStyleRejectedBySiblingRules; 55 unsigned sharedStyleRejectedByParent; 56 unsigned matchedPropertyApply; 57 unsigned matchedPropertyCacheHit; 58 unsigned matchedPropertyCacheInheritedHit; 59 unsigned matchedPropertyCacheAdded; 60 61 // We keep a separate flag for this since crawling the entire document to print 62 // the number of missed candidates is very slow. 63 bool printMissedCandidateCount; 64 65 private: StyleResolverStats()66 StyleResolverStats() 67 : printMissedCandidateCount(false) 68 { 69 reset(); 70 } 71 }; 72 73 #define INCREMENT_STYLE_STATS_COUNTER(resolver, counter) ((resolver).stats() && ++(resolver).stats()-> counter && (resolver).statsTotals()-> counter ++); 74 75 } // namespace blink 76 77 #endif // StyleResolverStats_h 78