// field access performance tester, Dan Bonachea
import java.util.Random;

public class fieldperf {
  public static single void report(String desc, Timer t, int iters) {
    Ti.barrier();
    if (Ti.thisProc() == 0)
    System.out.println(desc + ": " + t.micros()/iters*1000.0 + " ns per iteration ("
                       + t.secs() + " secs total)");
    Ti.barrier();
  }
 #define TEST(msg, code) do { \
    t.reset(); \
    t.start(); \
    for (int i=0; i < iters; i++) { \
      code; \
    } \
    t.stop(); \
    report(msg, t, iters); \
  } while (false)

  public static single void main(String[]args) {
    int iters0 = 1000000;
    if (args.length > 0) 
      try { iters0 = Integer.parseInt(args[0]); } catch (Throwable exn) {}
    int single iters = broadcast iters0 from 0;
    if (Ti.thisProc()==0) 
      System.out.println("Running " + iters + " iterations of Random performance test on " 
                        + Ti.numProcs() + " threads");
    Timer t = new Timer();
    Random r = new Random();
    int x;
    if (Ti.thisProc() == 0) System.out.println("--------------------------------------");
    Ti.barrier();
    TEST("Random.nextDouble()", r.nextDouble(); );
    TEST("Random.nextInt()", r.nextInt(); );

  }
}