private void sendPendingHaves() {
if (destroyed) {
return;
}
try {
pending_haves_mon.enter();
int num_haves = pending_haves.size();
if (num_haves == 0) {
return;
}
// single have -> use BT
if (num_haves == 1 || az_have_version < BTMessageFactory.MESSAGE_VERSION_SUPPORTS_PADDING) {
for (int i = 0; i < num_haves; i++) {
Integer piece_num = (Integer) pending_haves.get(i);
outgoing_message_q.addMessage(new BTHave(piece_num.intValue(), bt_have_version), true);
}
} else {
int[] piece_numbers = new int[num_haves];
for (int i = 0; i < num_haves; i++) {
piece_numbers[i] = ((Integer) pending_haves.get(i)).intValue();
}
outgoing_message_q.addMessage(new AZHave(piece_numbers, az_have_version), true);
}
outgoing_message_q.doListenerNotifications();
pending_haves.clear();
} finally {
pending_haves_mon.exit();
}
}
/**
* Create a new aggregator, which will send messages out the given queue.
*
* @param outgoing_message_q
*/
public OutgoingBTHaveMessageAggregator(
OutgoingMessageQueue outgoing_message_q, byte _bt_have_version, byte _az_have_version) {
this.outgoing_message_q = outgoing_message_q;
bt_have_version = _bt_have_version;
az_have_version = _az_have_version;
outgoing_message_q.registerQueueListener(added_message_listener);
}
/**
* Queue a new have message for aggregated sending.
*
* @param piece_number of the have message
* @param force if true, send this and any other pending haves right away
*/
public void queueHaveMessage(int piece_number, boolean force) {
if (destroyed) return;
try {
pending_haves_mon.enter();
pending_haves.add(new Integer(piece_number));
if (force) {
sendPendingHaves();
} else {
int pending_bytes = pending_haves.size() * 9;
if (pending_bytes >= outgoing_message_q.getMssSize()) {
// System.out.println("enough pending haves for a full packet!");
// there's enough pending bytes to fill a packet payload
sendPendingHaves();
}
}
} finally {
pending_haves_mon.exit();
}
}