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/**
* Navit, a modular navigation system.
* Copyright (C) 2005-2008 Navit Team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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.navitproject.navit;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import java.lang.Thread;
public class NavitWatch implements Runnable {
private Thread thread;
private static Handler handler = new Handler() {
public void handleMessage(Message m) {
Log.e("NavitWatch","Handler received message");
}
};
private boolean removed;
private int watch_func;
private int watch_fd;
private int watch_cond;
private int watch_callbackid;
private boolean callback_pending;
private Runnable callback_runnable;
public native void poll(int func, int fd, int cond);
public native void WatchCallback(int id);
NavitWatch(int func, int fd, int cond, int callbackid) {
// Log.e("NavitWatch","Creating new thread for "+fd+" "+cond+" from current thread "
// + java.lang.Thread.currentThread().getName());
watch_func = func;
watch_fd = fd;
watch_cond = cond;
watch_callbackid = callbackid;
final NavitWatch navitwatch = this;
callback_runnable = new Runnable() {
public void run() {
navitwatch.callback();
}
};
thread = new Thread(this, "poll thread");
thread.start();
}
public void run() {
for (;;) {
// Log.e("NavitWatch","Polling "+watch_fd+" "+watch_cond + " from "
// + java.lang.Thread.currentThread().getName());
poll(watch_func, watch_fd, watch_cond);
// Log.e("NavitWatch","poll returned");
if (removed) {
break;
}
callback_pending = true;
handler.post(callback_runnable);
try {
// Log.e("NavitWatch","wait");
synchronized (this) {
if (callback_pending) {
this.wait();
}
}
// Log.e("NavitWatch","wait returned");
} catch (Exception e) {
Log.e("NavitWatch","Exception " + e.getMessage());
}
if (removed) {
break;
}
}
}
public void callback() {
// Log.e("NavitWatch","Calling Callback");
if (!removed) {
WatchCallback(watch_callbackid);
}
synchronized (this) {
callback_pending = false;
// Log.e("NavitWatch","Waking up");
this.notify();
}
}
public void remove() {
removed = true;
thread.interrupt();
}
}
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