001/*
002 * Copyright (C) Photon Vision.
003 *
004 * This program is free software: you can redistribute it and/or modify
005 * it under the terms of the GNU General Public License as published by
006 * the Free Software Foundation, either version 3 of the License, or
007 * (at your option) any later version.
008 *
009 * This program is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012 * GNU General Public License for more details.
013 *
014 * You should have received a copy of the GNU General Public License
015 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
016 */
017
018package org.photonvision.jni;
019
020public class TimeSyncServer {
021    private final Object mutex = new Object();
022    private long handle;
023
024    public TimeSyncServer(int port) {
025        this.handle = TimeSyncServer.create(port);
026    }
027
028    public void start() {
029        synchronized (mutex) {
030            if (handle != 0) {
031                TimeSyncServer.start(handle);
032            } else {
033                System.err.println("TimeSyncServer: use after free?");
034            }
035        }
036    }
037
038    public void stop() {
039        if (handle != 0) {
040            TimeSyncServer.stop(handle);
041            handle = 0;
042        }
043    }
044
045    private static native long create(int port);
046
047    private static native void start(long handle);
048
049    private static native void stop(long handle);
050}