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1 package jp.ac.u_ryukyu.ie.cr.tatsuki.treemap;
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2
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3 import java.io.BufferedWriter;
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4 import java.io.File;
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5 import java.io.FileWriter;
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6 import java.io.IOException;
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7 import java.io.PrintWriter;
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8 import java.util.LinkedList;
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9
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10 import fj.Ord;
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11 import fj.data.TreeMap;
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12
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13
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14 public class functionalJavaTreeMapMemory {
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15 public static void main(String args[]) throws IOException {
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16 File getFile = new File("./time/fjMemory");
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17 PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter(getFile)));
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18 TreeMap<Integer, Integer> map = TreeMap.empty(Ord.intOrd);
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19 LinkedList<TreeMap<Integer, Integer>> list = new LinkedList<TreeMap<Integer, Integer>>();
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20 list.add(map);
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21 for (Integer count = 0; count <= 10000; count++) {
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22 TreeMap<Integer, Integer> newMap = list.getLast();
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23 TreeMap<Integer, Integer> copyMap = newMap.set(count, count);
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24 list.add(copyMap);
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25 long used = getMemory();
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26 System.out.println(count + " " + used);
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27 pw.println(count + " " + used);
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28 }
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29 pw.close();
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30 }
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31
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32 public static long getMemory() {
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33 long free = Runtime.getRuntime().freeMemory() / 1024;
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34 long total = Runtime.getRuntime().totalMemory() / 1024;
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35 long used = total - free;
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36 return used;
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37 }
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38 }
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