001    /*
002     *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003     *
004     *  This file is licensed to You under the Eclipse Public License (EPL);
005     *  You may not use this file except in compliance with the License. You
006     *  may obtain a copy of the License at
007     *
008     *      http://www.opensource.org/licenses/eclipse-1.0.php
009     *
010     *  See the COPYRIGHT.txt file distributed with this work for information
011     *  regarding copyright ownership.
012     */
013    package org.jikesrvm.adaptive.measurements.instrumentation;
014    
015    import org.jikesrvm.VM;
016    import org.jikesrvm.adaptive.measurements.Reportable;
017    import org.jikesrvm.compilers.opt.InstrumentedEventCounterManager;
018    
019    /**
020     * An extension of StringEventCounterData so that the printing can
021     * be specialized for yieldpoints.  Otherwise, the functionality is
022     * identical.
023     */
024    public final class YieldpointCounterData extends StringEventCounterData implements Reportable {
025    
026      static final boolean DEBUG = false;
027    
028      /**
029       *  Constructor
030       *
031       * @param manager the manager that will provide the counter space
032       **/
033      YieldpointCounterData(InstrumentedEventCounterManager manager) {
034        // Call superclass constructor
035        super(manager, "Yieldpoint Counter");
036    
037        automaticallyGrowCounters(true);
038      }
039    
040      /**
041       *  Called at end when data should dump its contents.
042       */
043      public void report() {
044        // Turn off future instrumentation so that the data structures do
045        // not change while we are iterating over them
046        Instrumentation.disableInstrumentation();
047    
048        VM.sysWrite("Printing " + dataName + ":\n");
049        VM.sysWrite("--------------------------------------------------\n");
050        double total = 0;
051        double methodEntryTotal = 0;
052        double backedgeTotal = 0;
053        for (String stringName : stringToCounterMap.keySet()) {
054          Integer counterNum = stringToCounterMap.get(stringName);
055          double count = getCounter(counterNum);
056    
057          VM.sysWrite(count + " " + stringName + "\n");
058          total += count;
059    
060          // If it's a method entry event
061          if (stringName.indexOf("METHOD ENTRY") != -1) {
062            methodEntryTotal += count;
063          }
064    
065          if (stringName.indexOf("BACKEDGE") != -1) {
066            backedgeTotal += count;
067          }
068    
069        }
070        VM.sysWrite("Total backedges: " + backedgeTotal + "\n");
071        VM.sysWrite("Method Entry Total: " + methodEntryTotal + "\n");
072        VM.sysWrite("Total Yieldpoints: " + total + "\n");
073      }
074    
075    } // end of class
076    
077