Benchmarks for doppio

Compute.java

public class Compute {
  public static void main(String args[]) {
    final long start = System.currentTimeMillis();
    final long ans = rep(8000);
    final long end = System.currentTimeMillis();
    System.out.println(ans);
    System.out.println("Time taken (ms): " + (end - start));
  }

  public static long rep(long n) {
    long sum = 0L;
    for (int i = 0; i < n; i++) {
      sum += fib(i % 73);
      if (sum % 7 < 4) {
        sum -= fib(i % 53);
      }
    }
    return sum;
  }

  public static long fib(long n) {
    long prev = 0L;
    long curr = 1L;

    for (int i = 0; i <= n; i++) {
      final long b = curr;
      curr += prev;
      prev = b;
    }
    return curr;
  }
}

FrozenCompile.java

import javax.tools.*;
import java.io.*;

public class FrozenCompile {
  public static void main(String args[]) {
    final long start = System.currentTimeMillis();
    final int ans = compile("Test", "public class Test {}");
    final long end = System.currentTimeMillis();
    System.out.println(ans);
    System.out.println("Time taken (ms): " + (end - start));
  }

  private static void writeToFile(final File path, final String data) throws IOException{
    try(final java.io.FileWriter fileWriter = new java.io.FileWriter(path)) {
      fileWriter.write(data);
    }
  }

  public static int compile(final String className, final String scriptText) {
    try {
      final String filePath = "/tmp/" + className + ".java";
      writeToFile(new File(filePath), scriptText);

      final JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
      final String[] compileData = {"-d", "/tmp", filePath};
      System.out.println("Compiling: " + java.util.Arrays.toString(compileData));

      final int result = compiler.run(null, null, null, compileData);
      return result;
    } catch (final IOException e) {
      e.printStackTrace();
      return -1;
    }
  }
}