Beispiel #1
0
 static void doIt(String toParse, BufferedWriter fw, SimpleNode optNode) throws Exception {
   long[] testArray = new long[10];
   double d = 0;
   DoubleStack stack = new DoubleStack();
   for (int j = 0; j < 10; j++) {
     Thread.yield();
     long start = System.currentTimeMillis();
     for (int i = 0; i < 100000; i++) {
       d = optNode.getValue();
     }
     testArray[j] = System.currentTimeMillis() - start;
   }
   fw.write("100000 evaluations: ");
   for (int j = 0; j < 10; j++) {
     fw.write(testArray[j] + ", ");
   }
   fw.write("\n");
 }
Beispiel #2
0
  public static void main(String[] args) throws Exception {
    Date startTime = new Date();
    parseParams(args);
    File inFile = new File((String) params.get("-file"));
    File logFile = new File((String) params.get("-logfile"));

    BufferedReader fr = new BufferedReader(new FileReader(inFile));
    BufferedWriter fw = new BufferedWriter(new FileWriter(logFile));

    jep.addStandardConstants();
    jep.addStandardFunctions();

    String curLine = null;
    int lines = 0;
    while (null != (curLine = fr.readLine())) {
      if (curLine.startsWith("#")) continue;
      String description = curLine;
      String toParse = fr.readLine();
      double result = Double.parseDouble(fr.readLine().trim());

      fw.write("Processing:" + toParse + ",\n");
      fw.write("Expected: " + result + "\n");
      fw.flush();

      // Give enought time to the jit compiler.
      double d = 0;
      DoubleStack stack = new DoubleStack();
      for (int i = 0; i < 1000; i++) {
        jep.parseExpression(toParse);
        d = jep.getValue(stack);
      }
      SimpleNode optNode = jep.getTopNode();
      // if(Boolean.getBoolean("noopt")) {
      fw.write("Not Optimized: ");
      doIt(toParse, fw, optNode);
      // }

      // if(Boolean.getBoolean("opt")) {
      ExpressionOptimizer optimizer = new ExpressionOptimizer(jep.getTopNode());
      // optimizer.addConst("pi");
      // optimizer.addConst("e");
      optNode = optimizer.optimize();

      fw.write("Optimized    : ");

      doIt(toParse, fw, optNode);

      long[] testArray = new long[10];
      for (int j = 0; j < 10; j++) {
        Thread.yield();
        long start = System.currentTimeMillis();
        for (int i = 0; i < 1000; i++) {
          jep.parseExpression(toParse);
        }
        testArray[j] = System.currentTimeMillis() - start;
      }
      fw.write("1000 parses: ");
      for (int j = 0; j < 10; j++) {
        fw.write(testArray[j] + ", ");
      }
      fw.write("\n");
      fw.write(d + "\n_____________________________________________________\n");
      fw.flush();
      // }
    }
    Date endTime = new Date();
    fw.write("Start time: " + startTime + "\n");
    fw.write("End time: " + endTime + "\n");
    fw.write("Total time: " + (endTime.getTime() - startTime.getTime()) + " ms");
    fw.close();
  }