1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
import org.jcsp.lang.*;
import java.util.Random;
class SymmetricA implements CSProcess {
private final AltingChannelInputInt in;
private final AltingChannelOutputInt out;
public SymmetricA (AltingChannelInputInt in, AltingChannelOutputInt out) {
this.in = in;
this.out = out;
}
public void run () {
final Alternative alt = new Alternative (new Guard[] {in , out});
final int IN = 0, OUT = 1;
final Random rand = new Random ();
final CSTimer tim = new CSTimer ();
int a = -1, b = -1;
while (true) {
int period = (rand.nextInt ()) % 16;
tim.sleep (period);
a++;
switch (alt.fairSelect ()) {
case IN:
b = in.read ();
System.out.println (b);
break;
case OUT:
out.write (a);
System.out.println ("\t\t" + a);
break;
}
}
}
}
|