-
Notifications
You must be signed in to change notification settings - Fork 30
/
Copy pathNotifyAllTest.java
79 lines (70 loc) · 2.19 KB
/
NotifyAllTest.java
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
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
import java.util.Arrays;
public class NotifyAllTest {
final static int TOTAL_CLIENTS = 9;
final static Object lock = new Object();
static boolean runServer = true;
static boolean[] finishedClients = new boolean[TOTAL_CLIENTS];
static int i = 0;
static boolean allFinished() {
boolean ans = true;
for (boolean b : finishedClients) {
ans &= b;
}
return ans;
}
static class Server extends Thread {
@Override
public void run() {
for (int j = 0; j < 10; j++) {
synchronized (lock) {
while (!runServer) {
try {
lock.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("Server prints " + i);
i++;
runServer = !runServer;
Arrays.fill(finishedClients, false);
lock.notifyAll();
}
}
}
}
static class Client extends Thread {
private int id;
Client(int id) {
this.id = id;
}
@Override
public void run() {
for (int j = 0; j < 10; j++) {
synchronized (lock) {
while (runServer || finishedClients[id]) {
try {
lock.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("Clients print " + i);
i++;
finishedClients[id] = true;
if (allFinished()) {
lock.notifyAll();
runServer = !runServer;
}
}
}
}
}
public static void main(String[] args) throws Exception {
Server s = new Server();
s.start();
for (int j = 0; j < TOTAL_CLIENTS; j++) {
new Client(j).start();
}
}
}