Revamp style resolver stats

Source/core/css/resolver/StyleResolverStats.h

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER 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.
  */
 
-#ifndef Composition_h
-#define Composition_h
+#ifndef StyleResolverStats_h
+#define StyleResolverStats_h
 
-#include "bindings/v8/ScriptWrappable.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
-class InputMethodContext;
+class StyleResolverStats {
+public:
+    static PassOwnPtr<StyleResolverStats> create()
+    {
+        return adoptPtr(new StyleResolverStats);
+    }
 
-class Composition : public ScriptWrappable {
-public:
-    static PassOwnPtr<Composition> create(InputMethodContext*);
-    ~Composition();
+    void reset();
+    String report() const;
 
-    void ref();
-    void deref();
+    unsigned sharedStyleLookups;
+    unsigned sharedStyleCandidates;
+    unsigned sharedStyleFound;
+    unsigned sharedStyleMissed;
+    unsigned sharedStyleRejectedByUncommonAttributeRules;
+    unsigned sharedStyleRejectedBySiblingRules;
+    unsigned sharedStyleRejectedByParent;
+    unsigned matchedPropertyApply;
+    unsigned matchedPropertyCacheHit;
+    unsigned matchedPropertyCacheInheritedHit;
+    unsigned matchedPropertyCacheAdded;
 
-    String text() const;
-    int selectionStart() const;
-    int selectionEnd() const;
-    const Vector<unsigned>& getSegments() const;
+    // We keep a separate flag for this since crawling the entire document to print
+    // the number of missed candidates is very slow.
+    bool printMissedCandidateCount;
 
 private:
-    explicit Composition(InputMethodContext*);
+    StyleResolverStats()
+        : printMissedCandidateCount(false)
+    {
+        reset();
+    }
+};
 
-    InputMethodContext* m_inputMethodContext;
-};
+#define INCREMENT_STYLE_STATS_COUNTER(resolver, counter) ((resolver).stats() && ++(resolver).stats()-> counter && (resolver).statsTotals()-> counter ++);
 
 } // namespace WebCore
 
-#endif // Composition_h
+#endif // StyleResolverStats_h