protected void implDereg(SelectionKeyImpl ski) throws IOException {
// Algorithm: Copy the sc from the end of the list and put it into
// the location of the sc to be removed (since order doesn't
// matter). Decrement the sc count. Update the index of the sc
// that is moved.
int i = ski.getIndex();
assert (i >= 0);
if (i != totalChannels - 1) {
// Copy end one over it
SelectionKeyImpl endChannel = channelArray[totalChannels - 1];
channelArray[i] = endChannel;
endChannel.setIndex(i);
pollWrapper.release(i);
PollArrayWrapper.replaceEntry(pollWrapper, totalChannels - 1, pollWrapper, i);
} else {
pollWrapper.release(i);
}
// Destroy the last one
channelArray[totalChannels - 1] = null;
totalChannels--;
pollWrapper.totalChannels--;
ski.setIndex(-1);
// Remove the key from keys and selectedKeys
keys.remove(ski);
selectedKeys.remove(ski);
deregister((AbstractSelectionKey) ski);
SelectableChannel selch = ski.channel();
if (!selch.isOpen() && !selch.isRegistered()) ((SelChImpl) selch).kill();
}
