/*
This file is part of JOP, the Java Optimized Processor
see <http://www.jopdesign.com/>
Copyright (C) 2001-2008, Martin Schoeberl (martin@jopdesign.com)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package testrt;
import joprt.RtThread;
import util.*;
/**
* Test synchronized methods
* @author martin
*
*/
public class Synch {
static Synch syn = new Synch();
/**
* @param args
*/
public static void main(String[] args) {
new RtThread(2, 11000) {
public void run() {
for (;;) {
syn.modify();
waitForNextPeriod();
}
}
};
new RtThread(3, 5000) {
public void run() {
for (;;) {
if (syn.read()!=0) {
System.out.println("Synchronization error");
}
waitForNextPeriod();
}
}
};
new RtThread(1, 500000) {
public void run() {
for (;;) {
System.out.print("*");
Timer.wd();
waitForNextPeriod();
}
}
};
RtThread.startMission();
}
int val;
synchronized int read() {
return val;
}
synchronized void modify() {
val = 1;
int t = Timer.getTimeoutMs(10);
while (!Timer.timeout(t)) {
; // busy wait
}
val = 0;
}
}