/**
* This method is the main function of the thread of the collective. It does housekeeping and
* regularly talks to peers to exchange information. It can be stopped by calling <code>close()
* </code>.
*
* @see #close()
*/
public final void run() {
while (shouldLive) {
// try{
System.gc();
removeOldStuff();
if (!refresh()) {
Address[] a = observer.getPeerAddresses();
if (a != null)
synchronized (cache) {
for (int i = 0; i < a.length; ++i)
cache.put(a[i].name, new ContributionBox(a[i], null));
}
}
for (int i = 0; i < REFRESHRATE; i += 1000) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
shouldLive = false;
}
if (shouldLive == false) break;
Thread.yield();
}
/*}
catch( RuntimeException e )
{
Logger.error( "Collective#run()",
"Runtime exception caught, something is going wrong",e);
}*/
}
cache = null;
observer = null;
}
/**
* The run method for the thread that retrieves the data from the database. This method should not
* be called directly. Instead use the retrieve method.
*/
public void run() {
try {
DataStoreRow row = new DataStoreRow(this, new DSDataRow(_desc), _desc);
while (_dataSource.retrieveRow(this, row)) {
_rows.addElement(row.getDSDataRow());
if (_threaded) notifyListeners(ModelChangedEvent.TYPE_ROW_INSERTED_OR_DELETED);
if (!_retrieveInProgress || (_maxRows > -1 && _rows.size() >= _maxRows)) {
_cancelInProgress = true;
_retrieveInProgress = false;
interruptWaitingRetrieveThreads();
break;
}
if (_threaded) Thread.yield();
row.setDSDataRow(new DSDataRow(_desc));
}
_dataSource.postRetrieve(this);
_cancelInProgress = false;
interruptWaitingCancelThreads();
notifyListeners(ModelChangedEvent.TYPE_DATA_LOADED);
} catch (Exception e) {
System.out.println("DataStore.run:" + e);
_cancelInProgress = false;
interruptWaitingCancelThreads();
}
_retrieveInProgress = false;
interruptWaitingRetrieveThreads();
_cancelInProgress = false;
interruptWaitingCancelThreads();
}
public static void spinAssertEquals(Object expected, Supplier<Object> s, int timeoutInSeconds) {
long now = System.currentTimeMillis();
while (System.currentTimeMillis() - now < now + (1000 * timeoutInSeconds)) {
if (s.get().equals(expected)) break;
Thread.yield();
}
assertEquals(expected, s.get());
}
@Test
public void canEcho() throws Exception {
server.start();
Thread.yield();
Socket s = new Socket("localhost", port);
OutputStream os = s.getOutputStream();
os.write("echo\n".getBytes());
String response = new BufferedReader(new InputStreamReader(s.getInputStream())).readLine();
assertEquals("echo", response);
}
public void run() {
boolean eof = false;
JavaCharStream stream = new JavaCharStream(in, 1, 1);
exec("_ps1 = sys.ps1");
PyObject ps1Obj = get("_ps1");
String ps1 = ps1Obj.toString();
exec("_ps2 = sys.ps2");
PyObject ps2Obj = get("_ps2");
String ps2 = ps2Obj.toString();
out.print(getDefaultBanner() + "\n");
out.print(ps1);
String line = "";
while (!eof) {
// try to sync up the console
System.out.flush();
System.err.flush();
Thread.yield(); // this helps a little
try {
boolean eol = false;
line = "";
while (!eol) {
char aChar = stream.readChar();
eol = (aChar == '\n');
if (!eol) line = line + aChar;
}
// hitting Enter at prompt returns a semicolon
// get rid of it since it returns an error when executed
if (line.equals(";")) line = "";
{
boolean retVal = push(line);
if (retVal) {
out.print(ps2);
} else {
out.print(ps1);
}
}
} catch (IOException ex) {
}
}
}
public static boolean kill() {
int j = 0;
Thread meMySelfI = Thread.currentThread();
do {
/* iter across the thread group, killing all members. */
shutdown = true;
Thread list[] = new Thread[tg.activeCount()];
// get all members of the group (including submembers)
int i = tg.enumerate(list);
// no members means that we have gracefully suceeded
if (i == 0) return true;
// if some of the threads do IO during the shut down they will
// need time to accomplish the IO. So, I give it to 'em
// after the first attempt.
if (j > 0)
try {
meMySelfI.sleep(500);
} catch (Exception e) {
}
;
// try to shudown each thread in the group
while (i-- > 0) {
FlickrFtpd tftp = (FlickrFtpd) list[i];
tftp.interrupt(); // first, do it politely
meMySelfI.yield(); // give 'em time to respond
tftp.forceClose(); // second, use a big hammer
meMySelfI.yield(); // give 'em time to respond
}
} while (j++ <= 3);
return false;
}
@Test
public void multipleEchos() throws Exception {
server.start();
Thread.yield();
Socket s1 = new Socket("localhost", port);
Socket s2 = new Socket("localhost", port);
s1.getOutputStream().write("echo1\n".getBytes());
s2.getOutputStream().write("echo2\n".getBytes());
String response1 = new BufferedReader(new InputStreamReader(s1.getInputStream())).readLine();
String response2 = new BufferedReader(new InputStreamReader(s2.getInputStream())).readLine();
assertEquals("echo1", response1);
assertEquals("echo2", response2);
}
/**
* Returns the current file cache.
*
* @param root root directory
* @return id, or {@code null} if newer file cache exists
* @throws InterruptedException interruption
*/
ProjectCache cache(final IOFile root) throws InterruptedException {
final ProjectCache pc = cache;
if (pc == null) {
// no file cache available: create and return new one
cache = new ProjectCache();
add(root, cache);
cache.finish();
} else {
// wait until file cache is initialized
while (!pc.valid()) {
Thread.yield();
// file cache was replaced with newer version
if (pc != cache) throw new InterruptedException();
}
}
// return existing file cache
return cache;
}
static void doIt(String toParse, BufferedWriter fw, SimpleNode optNode) throws Exception {
long[] testArray = new long[10];
double d = 0;
DoubleStack stack = new DoubleStack();
for (int j = 0; j < 10; j++) {
Thread.yield();
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
d = optNode.getValue();
}
testArray[j] = System.currentTimeMillis() - start;
}
fw.write("100000 evaluations: ");
for (int j = 0; j < 10; j++) {
fw.write(testArray[j] + ", ");
}
fw.write("\n");
}
protected BTGPSLocationProvider() throws LocationException {
// TODO: Move this to searchConnect method?
// TODO: The problem here is that it searches every time. Slow. Need to try Properties?
// TODO: BIG ONE: Should only connect to GPS that isPaired() (from menu). Will
// allow some degree of control over which GPS is connects to in classroom.
try {
da = LocalDevice.getLocalDevice().getDiscoveryAgent();
da.startInquiry(DiscoveryAgent.GIAC, this);
} catch (BluetoothStateException e) {
throw new LocationException(e.getMessage());
}
while (!doneInq) {
Thread.yield();
}
if (btDevice == null) throw new LocationException("No device found");
String address = btDevice.getBluetoothAddress();
String btaddy = "btspp://" + address;
try {
StreamConnectionNotifier scn = (StreamConnectionNotifier) Connector.open(btaddy);
if (scn == null) throw new LocationException("Bad BT address");
StreamConnection c = scn.acceptAndOpen();
/* This problem below occurred one time for my Holux GPS. The solution was to
* remove the device from the Bluetooth menu, then find and pair again.
*/
if (c == null) throw new LocationException("Failed. Try pairing at menu again");
InputStream in = c.openInputStream();
if (in != null) {
gps = new SimpleGPS(in);
// c.close(); // TODO: Clean up when done. HOW TO HANDLE IN LOCATION?
}
} catch (IOException e) {
throw new LocationException(e.getMessage());
}
// Add itself to SimpleGPS as listener
SimpleGPS.addListener(this);
}
/**
* This one checks that the stats message was received. If not, the message is sent again up to
* five times. Run time an best individual of run are logged.
*/
public void finalStatistics(final EvolutionState state, final int result) {
super.finalStatistics(state, result);
EvolutionAgent agent = (EvolutionAgent) state;
StatisticsData data =
new StatisticsData(
new Address(agent.getName()),
state.generation,
System.currentTimeMillis() - creationtime,
getBestIndividual(state),
getBestIndividual(state));
if (agent.iamroot) // Local logging
printStatistics(state, data); // Every statistic will go there
else { // DRM logging
for (int i = 0; i < 5; i++) { // Try to send final data 5 times
IRequest request = agent.fireMessage(agent.getRootAddress(), EvolutionAgent.M_STATS, data);
while (request.getStatus() == IRequest.WAITING) {
Thread.yield();
// try{Thread.sleep(1000);}
// catch(Exception e){state.output.error("Exception: " + e);}
}
if (request.getStatus() == IRequest.DONE) {
break;
} else {
state.output.error("There was an error sending final statistics.");
try {
Thread.sleep(1000 * i ^ 2);
} catch (Exception e) {
state.output.error("Exception: " + e);
}
}
}
}
}
public void run() {
if (cnt == 0) {
// Give precedence to the Thread that is creating the BackEnd
Thread.yield();
// In the meanwhile load the ConnectionListener if any
try {
myConnectionListener =
(ConnectionListener)
Class.forName(props.getProperty("connection-listener")).newInstance();
} catch (Exception e) {
// Just ignore it
}
}
myId = cnt++;
myLogger.log(Logger.INFO, "IM-" + myId + " started");
// Prepare an initial dummy response
JICPPacket rsp = new JICPPacket(JICPProtocol.RESPONSE_TYPE, JICPProtocol.DEFAULT_INFO, null);
while (active) {
try {
// Prepare the connection for next incoming command
refreshConnection();
myDisconnectionManager.waitUntilReachable();
// Deliver the response to the previous incoming command and wait for the next one
// If we are delivering the response to an exit command, set active to false to avoid an
// annoying stack trace
// (due to the fact that the back-end will close the connection instead of sending further
// commands) and exit
if (this == terminator) {
active = false;
}
JICPPacket cmd = deliver(rsp, myConnection);
myKeepAliveManager.update();
if (cmd.getType() == JICPProtocol.KEEP_ALIVE_TYPE) {
// Keep-alive
if (myLogger.isLoggable(Logger.FINER)) {
myLogger.log(Logger.FINER, "Keep-alive received");
}
rsp = new JICPPacket(JICPProtocol.RESPONSE_TYPE, JICPProtocol.OK_INFO, null);
} else {
// Command
byte sid = cmd.getSessionID();
if (sid == lastSid) {
myLogger.log(Logger.WARNING, "Duplicated command received " + sid);
rsp = lastResponse;
} else {
myLogger.log(Logger.FINE, "Incoming command received " + sid);
byte[] rspData = mySkel.handleCommand(cmd.getData());
myLogger.log(Logger.FINE, "Incoming command served " + sid);
rsp = new JICPPacket(JICPProtocol.RESPONSE_TYPE, JICPProtocol.DEFAULT_INFO, rspData);
rsp.setSessionID(sid);
lastSid = sid;
lastResponse = rsp;
}
}
} catch (Exception e) {
if (active) {
myLogger.log(Logger.WARNING, "Exception on input connection", e);
// Note that the boolean value passed to setUnreachable() only indicates if the
// unreachability was detected by a missing keep-alive
myDisconnectionManager.setUnreachable(false);
}
}
}
myLogger.log(Logger.INFO, "IM-" + myId + " terminated");
}
public static void main(String[] args) throws Exception {
Date startTime = new Date();
parseParams(args);
File inFile = new File((String) params.get("-file"));
File logFile = new File((String) params.get("-logfile"));
BufferedReader fr = new BufferedReader(new FileReader(inFile));
BufferedWriter fw = new BufferedWriter(new FileWriter(logFile));
jep.addStandardConstants();
jep.addStandardFunctions();
String curLine = null;
int lines = 0;
while (null != (curLine = fr.readLine())) {
if (curLine.startsWith("#")) continue;
String description = curLine;
String toParse = fr.readLine();
double result = Double.parseDouble(fr.readLine().trim());
fw.write("Processing:" + toParse + ",\n");
fw.write("Expected: " + result + "\n");
fw.flush();
// Give enought time to the jit compiler.
double d = 0;
DoubleStack stack = new DoubleStack();
for (int i = 0; i < 1000; i++) {
jep.parseExpression(toParse);
d = jep.getValue(stack);
}
SimpleNode optNode = jep.getTopNode();
// if(Boolean.getBoolean("noopt")) {
fw.write("Not Optimized: ");
doIt(toParse, fw, optNode);
// }
// if(Boolean.getBoolean("opt")) {
ExpressionOptimizer optimizer = new ExpressionOptimizer(jep.getTopNode());
// optimizer.addConst("pi");
// optimizer.addConst("e");
optNode = optimizer.optimize();
fw.write("Optimized : ");
doIt(toParse, fw, optNode);
long[] testArray = new long[10];
for (int j = 0; j < 10; j++) {
Thread.yield();
long start = System.currentTimeMillis();
for (int i = 0; i < 1000; i++) {
jep.parseExpression(toParse);
}
testArray[j] = System.currentTimeMillis() - start;
}
fw.write("1000 parses: ");
for (int j = 0; j < 10; j++) {
fw.write(testArray[j] + ", ");
}
fw.write("\n");
fw.write(d + "\n_____________________________________________________\n");
fw.flush();
// }
}
Date endTime = new Date();
fw.write("Start time: " + startTime + "\n");
fw.write("End time: " + endTime + "\n");
fw.write("Total time: " + (endTime.getTime() - startTime.getTime()) + " ms");
fw.close();
}
public void setLocationListener(
LocationListener listener, int interval, int timeout, int maxAge) {
// * Stop all previous listener threads *
listenerRunning = false;
if (listyThread != null) {
while (listyThread.isAlive()) {
Thread.yield();
} // End old thread
listyThread = null; // Discard the listener thread instance
}
// * Remove any listeners from GPSListener *
if (listener == null) {
// Remove current listener from SimpleGPS
SimpleGPS.removeListener(gpsl);
gpsl = null;
return; // No listener provided, so return now so it dosn't make a new one
}
// * Inner classes need final variables *
final int to = timeout;
final LocationListener l = listener;
final LocationProvider lp = this;
final int delay = interval * 1000; // Oddly interval is in seconds, and not float
// Make new thread here and start it if interval > 0, else if -1
// then use the GPSListener interface.
if (interval > 0) { // Notify according to interval by user
listyThread =
new Thread() {
public void run() {
while (listenerRunning) {
try {
// TODO: Probably only notify if location changed? Need to compare to old.
// TODO: Make helper method since this is used below too.
l.locationUpdated(lp, lp.getLocation(to));
Thread.sleep(delay);
} catch (LocationException e) {
// TODO Auto-generated catch block
} catch (InterruptedException e) {
// TODO Auto-generated catch block
}
}
}
};
listyThread.setDaemon(true); // so JVM exits if thread is still running
listenerRunning = true;
listyThread.start();
} else if (interval < 0) { // If interval is -1, use default update interval
// In our case, update as soon as new coordinates are available from GPS (via GPSListener)
// TODO: Alternate method: Use GPSListener for ProximityListener and this.
gpsl =
new GPSListener() {
public void sentenceReceived(NMEASentence sen) {
// Check if GGASentence. Means that new location info is ready
if (sen.getHeader().equals(GGASentence.HEADER)) {
try {
// TODO: Probably only notify if location changed? Need to compare to old.
l.locationUpdated(lp, lp.getLocation(to));
} catch (LocationException e) {
// TODO Auto-generated catch block
} catch (InterruptedException e) {
// TODO Auto-generated catch block
}
}
}
};
SimpleGPS.addListener(gpsl);
}
// TODO: Need to implement LocationListener.providerStateChanged()
}
