/*
* Copyright (C) 2015-2017 PÂRIS Quentin
*
* 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.phoenicis.scripts.ui;
import org.phoenicis.scripts.interpreter.ScriptException;
import java.util.concurrent.Semaphore;
public class Message<T> {
private T message;
private final Semaphore semaphore = new Semaphore(0);
private Thread senderThread;
void block() {
senderThread = Thread.currentThread();
try {
semaphore.acquire();
} catch (InterruptedException e) {
throw new ScriptException(e);
}
}
public void send(T message) {
this.message = message;
semaphore.release();
}
public void sendCancelSignal() {
senderThread.interrupt();
}
T get() {
if (Thread.currentThread().isInterrupted()) {
throw new ScriptException("The script was interrupted");
}
return message;
}
}