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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "net/quic/quic_ack_notifier.h" | 5 #include "net/quic/quic_ack_notifier.h" |
| 6 | 6 |
| 7 #include <set> | 7 #include <set> |
| 8 | 8 |
| 9 #include "base/logging.h" | 9 #include "base/logging.h" |
| 10 #include "base/stl_util.h" | 10 #include "base/stl_util.h" |
| 11 | 11 |
| 12 using base::hash_map; | 12 using base::hash_map; |
| 13 using std::make_pair; | 13 using std::make_pair; |
| 14 | 14 |
| 15 namespace net { | 15 namespace net { |
| 16 | 16 |
| 17 QuicAckNotifier::PacketInfo::PacketInfo() : packet_payload_size(0) { | 17 QuicAckNotifier::PacketInfo::PacketInfo() : packet_payload_size(0) { |
| 18 } | 18 } |
| 19 | 19 |
| 20 QuicAckNotifier::PacketInfo::PacketInfo(int payload_size) | 20 QuicAckNotifier::PacketInfo::PacketInfo(int payload_size) |
| 21 : packet_payload_size(payload_size) { | 21 : packet_payload_size(payload_size) { |
| 22 } | 22 } |
| 23 | 23 |
| 24 QuicAckNotifier::DelegateInterface::DelegateInterface() {} | 24 QuicAckNotifier::DelegateInterface::DelegateInterface() { |
| 25 } |
| 25 | 26 |
| 26 QuicAckNotifier::DelegateInterface::~DelegateInterface() {} | 27 QuicAckNotifier::DelegateInterface::~DelegateInterface() { |
| 28 } |
| 27 | 29 |
| 28 QuicAckNotifier::QuicAckNotifier(DelegateInterface* delegate) | 30 QuicAckNotifier::QuicAckNotifier(DelegateInterface* delegate) |
| 29 : delegate_(delegate), | 31 : delegate_(delegate), |
| 30 original_packet_count_(0), | 32 original_packet_count_(0), |
| 31 original_byte_count_(0), | 33 original_byte_count_(0), |
| 32 retransmitted_packet_count_(0), | 34 retransmitted_packet_count_(0), |
| 33 retransmitted_byte_count_(0) { | 35 retransmitted_byte_count_(0) { |
| 34 DCHECK(delegate); | 36 DCHECK(delegate); |
| 35 } | 37 } |
| 36 | 38 |
| 37 QuicAckNotifier::~QuicAckNotifier() { | 39 QuicAckNotifier::~QuicAckNotifier() { |
| 38 } | 40 } |
| 39 | 41 |
| 40 void QuicAckNotifier::AddSequenceNumber( | 42 void QuicAckNotifier::AddSequenceNumber( |
| 41 const QuicPacketSequenceNumber& sequence_number, | 43 const QuicPacketSequenceNumber& sequence_number, |
| 42 int packet_payload_size) { | 44 int packet_payload_size) { |
| 43 sequence_numbers_.insert(make_pair(sequence_number, | 45 sequence_numbers_.insert( |
| 44 PacketInfo(packet_payload_size))); | 46 make_pair(sequence_number, PacketInfo(packet_payload_size))); |
| 45 ++original_packet_count_; | 47 ++original_packet_count_; |
| 46 original_byte_count_ += packet_payload_size; | 48 original_byte_count_ += packet_payload_size; |
| 47 } | 49 } |
| 48 | 50 |
| 49 bool QuicAckNotifier::OnAck(QuicPacketSequenceNumber sequence_number, | 51 bool QuicAckNotifier::OnAck(QuicPacketSequenceNumber sequence_number, |
| 50 QuicTime::Delta delta_largest_observed) { | 52 QuicTime::Delta delta_largest_observed) { |
| 51 DCHECK(ContainsKey(sequence_numbers_, sequence_number)); | 53 DCHECK(ContainsKey(sequence_numbers_, sequence_number)); |
| 52 sequence_numbers_.erase(sequence_number); | 54 sequence_numbers_.erase(sequence_number); |
| 53 if (IsEmpty()) { | 55 if (IsEmpty()) { |
| 54 // We have seen all the sequence numbers we were waiting for, trigger | 56 // We have seen all the sequence numbers we were waiting for, trigger |
| 55 // callback notification. | 57 // callback notification. |
| 56 delegate_->OnAckNotification( | 58 delegate_->OnAckNotification(original_packet_count_, |
| 57 original_packet_count_, original_byte_count_, | 59 original_byte_count_, |
| 58 retransmitted_packet_count_, retransmitted_byte_count_, | 60 retransmitted_packet_count_, |
| 59 delta_largest_observed); | 61 retransmitted_byte_count_, |
| 62 delta_largest_observed); |
| 60 return true; | 63 return true; |
| 61 } | 64 } |
| 62 return false; | 65 return false; |
| 63 } | 66 } |
| 64 | 67 |
| 65 void QuicAckNotifier::UpdateSequenceNumber( | 68 void QuicAckNotifier::UpdateSequenceNumber( |
| 66 QuicPacketSequenceNumber old_sequence_number, | 69 QuicPacketSequenceNumber old_sequence_number, |
| 67 QuicPacketSequenceNumber new_sequence_number) { | 70 QuicPacketSequenceNumber new_sequence_number) { |
| 68 DCHECK(!ContainsKey(sequence_numbers_, new_sequence_number)); | 71 DCHECK(!ContainsKey(sequence_numbers_, new_sequence_number)); |
| 69 | 72 |
| 70 PacketInfo packet_info; | 73 PacketInfo packet_info; |
| 71 hash_map<QuicPacketSequenceNumber, PacketInfo>::iterator it = | 74 hash_map<QuicPacketSequenceNumber, PacketInfo>::iterator it = |
| 72 sequence_numbers_.find(old_sequence_number); | 75 sequence_numbers_.find(old_sequence_number); |
| 73 if (it != sequence_numbers_.end()) { | 76 if (it != sequence_numbers_.end()) { |
| 74 packet_info = it->second; | 77 packet_info = it->second; |
| 75 sequence_numbers_.erase(it); | 78 sequence_numbers_.erase(it); |
| 76 } else { | 79 } else { |
| 77 DLOG(DFATAL) << "Old sequence number not found."; | 80 DLOG(DFATAL) << "Old sequence number not found."; |
| 78 } | 81 } |
| 79 | 82 |
| 80 ++retransmitted_packet_count_; | 83 ++retransmitted_packet_count_; |
| 81 retransmitted_byte_count_ += packet_info.packet_payload_size; | 84 retransmitted_byte_count_ += packet_info.packet_payload_size; |
| 82 sequence_numbers_.insert(make_pair(new_sequence_number, packet_info)); | 85 sequence_numbers_.insert(make_pair(new_sequence_number, packet_info)); |
| 83 } | 86 } |
| 84 | 87 |
| 85 }; // namespace net | 88 }; // namespace net |
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