| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "net/quic/quic_ack_notifier.h" |
| |
| #include <set> |
| |
| #include "base/logging.h" |
| #include "base/stl_util.h" |
| |
| using base::hash_map; |
| using std::make_pair; |
| |
| namespace net { |
| |
| QuicAckNotifier::DelegateInterface::DelegateInterface() {} |
| |
| QuicAckNotifier::DelegateInterface::~DelegateInterface() {} |
| |
| QuicAckNotifier::QuicAckNotifier(DelegateInterface* delegate) |
| : delegate_(delegate), |
| unacked_packets_(0), |
| retransmitted_packet_count_(0), |
| retransmitted_byte_count_(0) { |
| DCHECK(delegate); |
| } |
| |
| QuicAckNotifier::~QuicAckNotifier() { |
| } |
| |
| void QuicAckNotifier::OnSerializedPacket() { |
| ++unacked_packets_; |
| } |
| |
| bool QuicAckNotifier::OnAck(QuicTime::Delta delta_largest_observed) { |
| if (unacked_packets_ <= 0) { |
| LOG(DFATAL) << "Acked more packets than were tracked." |
| << " unacked_packets:" << unacked_packets_; |
| return true; |
| } |
| --unacked_packets_; |
| if (!HasUnackedPackets()) { |
| // We have seen all the sequence numbers we were waiting for, trigger |
| // callback notification. |
| delegate_->OnAckNotification(retransmitted_packet_count_, |
| retransmitted_byte_count_, |
| delta_largest_observed); |
| return true; |
| } |
| return false; |
| } |
| |
| bool QuicAckNotifier::OnPacketAbandoned() { |
| if (unacked_packets_ <= 0) { |
| LOG(DFATAL) << "Abandoned more packets than were tracked." |
| << " unacked_packets:" << unacked_packets_; |
| return true; |
| } |
| --unacked_packets_; |
| return unacked_packets_ == 0; |
| } |
| |
| void QuicAckNotifier::OnPacketRetransmitted(int packet_payload_size) { |
| ++retransmitted_packet_count_; |
| retransmitted_byte_count_ += packet_payload_size; |
| } |
| |
| }; // namespace net |