Listing 2.

Modified simulation, version 1.

1	import jtt.*; // Import the JTT package
2	public class MyProcess {
3	// Initialize the process
4	public MyProcess ( ) {
5	. . .
6	// create a task
7	Task task1 = new Task ( );
8	task1.setPeriod (0.08); // period 80 ms
9	task1.setPriority Value (0) // Top priority
10	// add code to a task
11	task1.addCode (new CodeSegment ( ) {
12	// code of the first segment
13	public double code ( ) {
14	. . .
15	return 0.03; // execution time
16	}
17	});
18	. . .
19	// create another task
20	Task task2 = new Task ( );
21	task2.set Period (0.1); // period 100 ms
22	task2.set PriorityValue (1) // priority
23	// add code to another task
24	. . .
25	// create kernel and add it the tasks
26	Kernel kernel = new Kernel ( )
27	kernel.setScheduling Policy (Kernel.FP);
28	kernel.addTask (task1);
29	kernel.addTask (task2);
30	// add the kernel to the real time environment
31	RTenv.add Kernel (kernel);
32	}
33	// Step the process for an increment of time
34	public void step (double dt) {
35	. . .
36	}
37	// Simulate the process
38	static public void main (String [] args) {
39	double time = 0, tFinal = 1.0, dt = 0.001;
40	MyProcess process = new MyProcess ( );
41	while (time <tFinal) {
42	double nextEvent = RTenv.nextEvent ( );
43	if (nextEvent <time + dt) {
44	process.step (nextEvent−time);
45	RTenv.runKernel ( );
46	time = nextEvent;
47	} else {
48	process.step (dt);
49	time += dt;
50	}
51	// output process variables
52	. . .
53	}
54	} // end of class