Method makeRoomForMessage

routing/ActiveRouter.java:268–288

Removes messages from the buffer (oldest first) until there's enough space for the new message. @param size Size of the new message transferred, the transfer is aborted before message is removed @return True if enough space could be freed, false if not

(int size)

	 * @return True if enough space could be freed, false if not
	 */
	protected boolean makeRoomForMessage(int size){
		if (size > this.getBufferSize()) {
			return false; // message too big for the buffer
		}
			
		int freeBuffer = this.getFreeBufferSize();
		/* delete messages from the buffer until there's enough space */
		while (freeBuffer < size) {
			Message m = getNextMessageToRemove(true); // don't remove msgs being sent

			if (m == null) {
				return false; // couldn't remove any more messages
			}			
			
			/* delete message from the buffer as "drop" */
			deleteMessage(m.getId(), true);
			freeBuffer += m.getSize();
		}
		
		return true;
	}
	
	/**
	 * Drops messages whose TTL is less than zero.