synchronized IbisIdentifier getElectionResult(String election, long timeout) throws IOException {
long deadline = System.currentTimeMillis() + timeout;
if (timeout == 0) {
deadline = Long.MAX_VALUE;
}
Election result = elections.get(election);
while (result == null) {
long timeRemaining = deadline - System.currentTimeMillis();
if (timeRemaining <= 0) {
logger.debug("getElectionResullt deadline expired");
return null;
}
try {
if (timeRemaining > 1000) {
timeRemaining = 1000;
}
logger.debug("waiting " + timeRemaining + " for election");
wait(timeRemaining);
logger.debug("DONE waiting " + timeRemaining + " for election");
} catch (final InterruptedException e) {
// IGNORE
}
result = elections.get(election);
}
logger.debug("getElection result = " + result);
return result.getWinner();
}
void writeState(DataOutputStream out, int joinTime) throws IOException {
ByteArrayOutputStream arrayOut = new ByteArrayOutputStream();
DataOutputStream dataOut = new DataOutputStream(arrayOut);
synchronized (this) {
if (!initialized) {
throw new IOException("state not initialized yet");
}
dataOut.writeInt(time);
members.writeTo(dataOut);
elections.writeTo(dataOut);
Event[] signals = eventList.getSignalEvents(joinTime, time);
dataOut.writeInt(signals.length);
for (Event event : signals) {
event.writeTo(dataOut);
}
dataOut.writeBoolean(closed);
if (closed) {
closeEvent.writeTo(out);
}
dataOut.writeBoolean(terminated);
if (terminated) {
terminateEvent.writeTo(out);
}
}
dataOut.flush();
dataOut.close();
byte[] bytes = arrayOut.toByteArray();
out.writeInt(bytes.length);
out.write(bytes);
logger.debug("pool state size = " + bytes.length);
}
private synchronized void handleEvent(Event event) {
logger.debug("handling event: " + event);
switch (event.getType()) {
case Event.JOIN:
members.add(new Member(event.getIbis(), event));
if (statistics != null) {
statistics.newPoolSize(members.size());
}
break;
case Event.LEAVE:
members.remove(event.getIbis());
if (statistics != null) {
statistics.newPoolSize(members.size());
}
break;
case Event.DIED:
IbisIdentifier died = event.getIbis();
members.remove(died);
if (statistics != null) {
statistics.newPoolSize(members.size());
}
if (died.equals(registry.getIbisIdentifier())) {
logger.debug("we were declared dead");
stop();
}
break;
case Event.SIGNAL:
// Not handled here
break;
case Event.ELECT:
elections.put(new Election(event));
if (statistics != null) {
statistics.electionEvent();
}
break;
case Event.UN_ELECT:
elections.remove(event.getDescription());
if (statistics != null) {
statistics.electionEvent();
}
break;
case Event.POOL_CLOSED:
closed = true;
closeEvent = event;
break;
case Event.POOL_TERMINATED:
terminated = true;
terminateEvent = event;
break;
default:
logger.error("unknown event type: " + event.getType());
}
// wake up threads waiting for events
notifyAll();
if (logger.isDebugEnabled()) {
logger.debug("member list now: " + members);
}
}
void init(DataInputStream stream) throws IOException {
long start = System.currentTimeMillis();
// copy over data first so we are not blocked while reading data
byte[] bytes = new byte[stream.readInt()];
stream.readFully(bytes);
DataInputStream in = new DataInputStream(new ByteArrayInputStream(bytes));
long read = System.currentTimeMillis();
// we have all the data in the array now, read from that...
synchronized (this) {
long locked = System.currentTimeMillis();
if (initialized) {
// already initialized, ignore
return;
}
logger.debug("reading bootstrap state");
time = in.readInt();
members.init(in);
long membersDone = System.currentTimeMillis();
elections.init(in);
int nrOfSignals = in.readInt();
if (nrOfSignals < 0) {
throw new IOException("negative number of signals");
}
ArrayList<Event> signals = new ArrayList<Event>();
for (int i = 0; i < nrOfSignals; i++) {
signals.add(new Event(in));
}
closed = in.readBoolean();
if (closed) {
closeEvent = new Event(in);
}
terminated = in.readBoolean();
if (terminated) {
terminateEvent = new Event(in);
}
// Create list of "old" events
SortedSet<Event> events = new TreeSet<Event>();
events.addAll(members.getJoinEvents());
events.addAll(elections.getEvents());
events.addAll(signals);
if (closed) {
events.add(closeEvent);
}
if (terminated) {
events.add(terminateEvent);
}
long used = System.currentTimeMillis();
// pass old events to the registry
// CALLS REGISTRY WHILE POOL IS LOCKED!
for (Event event : events) {
registry.handleEvent(event);
}
long handled = System.currentTimeMillis();
initialized = true;
notifyAll();
if (statistics != null) {
statistics.newPoolSize(members.size());
}
long statted = System.currentTimeMillis();
logger.info(
"pool init, read = "
+ (read - start)
+ ", locked = "
+ (locked - read)
+ ", membersDone = "
+ (membersDone - locked)
+ ", used = "
+ (used - membersDone)
+ ", handled = "
+ (handled - used)
+ ", statted = "
+ (statted - handled));
}
handleEvents();
logger.debug("bootstrap complete");
}
