@SuppressWarnings("unchecked")
void check() {
watchDogRuns++;
long current = System.currentTimeMillis();
ArrayList<WeakReference<TimeoutMgmHandle>> connectionsCopy = null;
synchronized (handles) {
connectionsCopy = (ArrayList<WeakReference<TimeoutMgmHandle>>) handles.clone();
}
for (WeakReference<TimeoutMgmHandle> handleRef : connectionsCopy) {
TimeoutMgmHandle handle = handleRef.get();
if (handle == null) {
remove(handleRef);
} else {
NonBlockingConnection con = handle.getConnection();
if (con.isOpen()) {
checkTimeout(con, current);
} else {
remove(handleRef);
}
}
}
computeSize();
}
private void remove(WeakReference<TimeoutMgmHandle> handleRef) {
synchronized (handles) {
handles.remove(handleRef);
}
currentSize.decrementAndGet();
if (LOG.isLoggable(Level.FINE)) {
TimeoutMgmHandle hdl = handleRef.get();
if (hdl != null) {
INonBlockingConnection con = hdl.getConnection();
if (con != null) {
LOG.fine(
"[" + con.getId() + "] handle deregistered (connections size=" + computeSize() + ")");
}
}
}
}
@SuppressWarnings("unchecked")
Set<NonBlockingConnection> getConnections() {
final Set<NonBlockingConnection> cons = new HashSet<NonBlockingConnection>();
ArrayList<WeakReference<TimeoutMgmHandle>> connectionsCopy = null;
synchronized (handles) {
connectionsCopy = (ArrayList<WeakReference<TimeoutMgmHandle>>) handles.clone();
}
for (WeakReference<TimeoutMgmHandle> handleRef : connectionsCopy) {
TimeoutMgmHandle handle = handleRef.get();
if (handle != null) {
NonBlockingConnection con = handle.getConnection();
if (con != null) {
cons.add(con);
}
}
}
return cons;
}
/**
* {@link NonBlockingConnection#NonBlockingConnection(ConnectionManager, HandlerAdapter)} 处被调用.
* </br> 一个连接注册一个. </br>
*/
public TimeoutMgmHandle register(NonBlockingConnection connection) {
TimeoutMgmHandle mgnCon = new TimeoutMgmHandle(connection);
WeakReference<TimeoutMgmHandle> ref = mgnCon.getWeakRef();
System.out.println("ref：" + ref);
if (ref != null) {
synchronized (handles) {
handles.add(ref);
}
} else {
if (LOG.isLoggable(Level.FINE)) {
LOG.fine("did not get the weak ref");
}
}
currentSize.incrementAndGet();
if (LOG.isLoggable(Level.FINE)) {
LOG.fine("connection registered");
}
return mgnCon;
}