comparison layer/ScrollableMagRangeCache.cpp @ 1164:f2f43802718b 3.0-integration

More timings and cache hit counts

     COPYING included with this distribution for more information.
 */
 
 #include "ScrollableMagRangeCache.h"
 
+#include "base/HitCount.h"
+
 #include <iostream>
 using namespace std;
 
 //#define DEBUG_SCROLLABLE_MAG_RANGE_CACHE 1
 
 void
 ScrollableMagRangeCache::scrollTo(const LayerGeometryProvider *v,
 				  sv_frame_t newStartFrame)
 {	
+    static HitCount count("ScrollableMagRangeCache: scrolling");
+    
     int dx = (v->getXForFrame(m_startFrame) -
 	      v->getXForFrame(newStartFrame));
 
 #ifdef DEBUG_SCROLLABLE_MAG_RANGE_CACHE
     cerr << "ScrollableMagRangeCache::scrollTo: start frame " << m_startFrame
 	 << " -> " << newStartFrame << ", dx = " << dx << endl;
 #endif
 
     if (m_startFrame == newStartFrame) {
 	// haven't moved
+        count.hit();
         return;
     }
     
     m_startFrame = newStartFrame;
 
     if (dx == 0) {
 	// haven't moved visibly (even though start frame may have changed)
+        count.hit();
 	return;
     }
 	
     int w = int(m_ranges.size());
 
     if (dx <= -w || dx >= w) {
 	// scrolled entirely off
 	invalidate();
+        count.miss();
 	return;
     }
+
+    count.partial();
 	
     // dx is in range, cache is scrollable
 
     if (dx < 0) {
 	// The new start frame is to the left of the old start