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/**
* a helper class to implement "Wait for Message/Client"
* @author Yannick Jestin
* @author <a href="http://www.tls.cena.fr/products/ivy/">http://www.tls.cena.fr/products/ivy/</a>
*
* CHANGELOG:
* 1.2.16:
* - factorize code from Waiter and WaiterClient
*/
package fr.dgac.ivy ;
abstract class WaitFor implements Runnable {
private static final int INCREMENT = 100;
int timeout;
IvyClient received=null;
boolean forever=false;
private Thread t;
void setName(String s) { t.setName(s); }
void interrupt() { t.interrupt(); }
WaitFor(int timeout) {
this.timeout=timeout;
if (timeout<=0) forever=true;
t=new Thread(this);
}
public IvyClient waitFor() {
t.start();
try { t.join(); } catch (InterruptedException ie) { return null; }
return received;
}
public void run() {
boolean encore=true;
// System.out.println("DEV Waiter start");
while (encore) {
try {
if (INCREMENT>0) Thread.sleep(INCREMENT);
if (!forever) {
timeout-=INCREMENT;
if (timeout<=0) encore=false;
}
} catch (InterruptedException ie) {
break;
}
if (check()) break;
}
// System.out.println("DEV Waiter stop");
}
abstract boolean check(); // is called in the thread, leaves if true
}
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