public void register(CanFlowControl control) {
verifyLegalDownstream(control);
boolean alreadyExisted = registeredSet.put(control, control) != null;
if (!alreadyExisted) {
SiteFlowControl handle = new SiteFlowControl(control);
control.setUpstreamControl(handle);
checkFlowControlState();
}
}
public void unregister(CanFlowControl control) {
verifyLegalDownstream(control);
if (registeredSet.containsKey(control)) {
control.setUpstreamControl(FlowControl.NOOP);
registeredSet.remove(
control); // dupe effort, but control might have called back into us on
// setUpstreamControl.
blockedSet.remove(control);
checkFlowControlState();
}
}
