@Override
public void handlerStatusChange(MessageHandler handler, boolean connected) {
final int numSessions = _sessions.length;
boolean allDisconnected = true;
for (int i = 0; i < numSessions; i++) {
SessionWrapper sessW = _sessions[i];
if (sessW._session == handler) {
if (connected != sessW._connected) {
final NonBlockingSession sess = sessW._session;
_log.info(
"MultiSession OutDispatcher "
+ getComponentId()
+ " : "
+ ((connected) ? "CONNECTED" : "DISCONNECTED")
+ " with "
+ sess.getComponentId()
+ ", canHandle="
+ sess.canHandle()
+ ", isLoggedIn="
+ sess.isLoggedIn());
sessW._connected = connected;
}
}
if (sessW._connected) {
allDisconnected = false;
}
}
_fullyFlushed = false;
synchronized (_disconnectLock) { // force mem barrier
_allDisconnected = allDisconnected;
}
_ctl.statusChange();
}
@Override
public void execute() throws Exception {
_curSessW = _sessions[_nextSession];
final MessageQueue queue = _curSessW._queue;
final MessageQueue preQueue = _curSessW._preQueue;
final NonBlockingSession sess = _curSessW._session;
if (++_nextSession >= _sessions.length) _nextSession = 0;
if (_curSessW._connected && sess.canHandle()) {
if (sess.isLoggedIn()) {
if (sess.isMsgPendingWrite()) {
sess.retryCompleteWrite();
} else if (preQueue.isEmpty()) {
_curMsg = queue.poll(); // POLL = non blocking, causes MEM_READ barrier
if (_curMsg != null && _curMsg.getReusableType() != CoreReusableType.NullMessage) {
sess.handleNow(_curMsg);
}
} else { // QUEUED MESSAGES FROM PREVIOUS FLUSH CALLS
_curMsg = preQueue.next();
if (_curMsg.getReusableType() != CoreReusableType.NullMessage) {
sess.handleNow(_curMsg);
}
}
} else { // SYNC mode
final MessageQueue syncQueue = _curSessW._syncQueue;
if (sess.isMsgPendingWrite()) {
sess.retryCompleteWrite();
} else if (!syncQueue.isEmpty()) {
_curMsg = syncQueue.next();
if (_curMsg.getReusableType() != CoreReusableType.NullMessage) {
sess.handleNow(_curMsg);
}
}
}
} else {
flush(_curSessW);
}
}
