/**
* Adds a message if not yet received
* @param seqno
* @param msg
* @return -1 if not added because seqno < next_to_remove, 0 if not added because already present,
* 1 if added successfully
*/
public byte add2(long seqno, Message msg) {
Segment segment=current_segment;
if(segment == null || !segment.contains(seqno)) {
segment=findOrCreateSegment(seqno);
if(segment != null)
current_segment=segment;
}
if(segment == null)
return -1;
return segment.add(seqno, msg);
}
public AckReceiverWindow(long initial_seqno, int segment_capacity) {
next_to_remove=new AtomicLong(initial_seqno);
this.segment_capacity=segment_capacity;
long index=next_to_remove.get() / segment_capacity;
long first_seqno=(next_to_remove.get() / segment_capacity) * segment_capacity;
this.segments.put(index, new Segment(first_seqno, segment_capacity));
Segment initial_segment=findOrCreateSegment(next_to_remove.get());
current_segment=initial_segment;
current_remove_segment=initial_segment;
for(long i=0; i < next_to_remove.get(); i++) {
initial_segment.add(i, TOMBSTONE);
initial_segment.remove(i);
}
}