| 1 | package de.uka.ipd.sdq.measurement.strategies.activeresource.cpu; |
| 2 | |
| 3 | import de.uka.ipd.sdq.measurement.strategies.activeresource.AbstractDemandStrategy; |
| 4 | import de.uka.ipd.sdq.measurement.strategies.activeresource.ResourceTypeEnum; |
| 5 | |
| 6 | public class MandelbrotDemand extends AbstractDemandStrategy { |
| 7 | |
| 8 | private int BAILOUT = 16; |
| 9 | private int MAX_ITERATIONS = 1000; |
| 10 | |
| 11 | public MandelbrotDemand() { |
| 12 | super(-2,0,2,40,20); |
| 13 | } |
| 14 | |
| 15 | private int iterate(float x, float y) { |
| 16 | float cr = y - 0.5f; |
| 17 | float ci = x; |
| 18 | float zi = 0.0f; |
| 19 | float zr = 0.0f; |
| 20 | int i = 0; |
| 21 | while (true) { |
| 22 | i++; |
| 23 | float temp = zr * zi; |
| 24 | float zr2 = zr * zr; |
| 25 | float zi2 = zi * zi; |
| 26 | zr = zr2 - zi2 + cr; |
| 27 | zi = temp + temp + ci; |
| 28 | if (zi2 + zr2 > BAILOUT) |
| 29 | return i; |
| 30 | if (i > MAX_ITERATIONS) |
| 31 | return 0; |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | private void drawMandelbrot(long init) { |
| 36 | // Date d1 = new Date(); |
| 37 | int n = (int) init; |
| 38 | float m = (float) n; |
| 39 | int x, y; |
| 40 | for (y = -n; y < n; y++) { |
| 41 | // System.out.print("\n"); |
| 42 | for (x = -n; x < n; x++) { |
| 43 | if (iterate(x / m, y / m) == 0) { |
| 44 | // System.out.print("*"); |
| 45 | } else { |
| 46 | // System.out.print(" "); |
| 47 | } |
| 48 | |
| 49 | } |
| 50 | } |
| 51 | // Date d2 = new Date(); |
| 52 | // long diff = d2.getTime() - d1.getTime(); |
| 53 | // System.out.println("\nJava Elapsed " + diff / 1000.0f); |
| 54 | } |
| 55 | |
| 56 | @Override |
| 57 | public void run(long initial) { |
| 58 | drawMandelbrot(initial); |
| 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public ResourceTypeEnum getStrategysResource() { |
| 63 | return ResourceTypeEnum.CPU; |
| 64 | } |
| 65 | |
| 66 | @Override |
| 67 | public String getName() { |
| 68 | return "Mandelbrot"; |
| 69 | } |
| 70 | |
| 71 | @Override |
| 72 | public void cleanup() { |
| 73 | // Do nothing. |
| 74 | } |
| 75 | } |