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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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/congestion_control/general_loss_algorithm.h" | 5 #include "net/quic/congestion_control/general_loss_algorithm.h" |
| 6 | 6 |
| 7 #include "net/quic/congestion_control/rtt_stats.h" | 7 #include "net/quic/congestion_control/rtt_stats.h" |
| 8 #include "net/quic/quic_bug_tracker.h" | 8 #include "net/quic/quic_bug_tracker.h" |
| 9 #include "net/quic/quic_protocol.h" | 9 #include "net/quic/quic_protocol.h" |
| 10 | 10 |
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| 29 GeneralLossAlgorithm::GeneralLossAlgorithm(LossDetectionType loss_type) | 29 GeneralLossAlgorithm::GeneralLossAlgorithm(LossDetectionType loss_type) |
| 30 : loss_type_(loss_type), loss_detection_timeout_(QuicTime::Zero()) {} | 30 : loss_type_(loss_type), loss_detection_timeout_(QuicTime::Zero()) {} |
| 31 | 31 |
| 32 LossDetectionType GeneralLossAlgorithm::GetLossDetectionType() const { | 32 LossDetectionType GeneralLossAlgorithm::GetLossDetectionType() const { |
| 33 return loss_type_; | 33 return loss_type_; |
| 34 } | 34 } |
| 35 | 35 |
| 36 // Uses nack counts to decide when packets are lost. | 36 // Uses nack counts to decide when packets are lost. |
| 37 void GeneralLossAlgorithm::DetectLosses( | 37 void GeneralLossAlgorithm::DetectLosses( |
| 38 const QuicUnackedPacketMap& unacked_packets, | 38 const QuicUnackedPacketMap& unacked_packets, |
| 39 const QuicTime& time, | 39 QuicTime time, |
| 40 const RttStats& rtt_stats, | 40 const RttStats& rtt_stats, |
| 41 SendAlgorithmInterface::CongestionVector* packets_lost) { | 41 SendAlgorithmInterface::CongestionVector* packets_lost) { |
| 42 const QuicPacketNumber largest_observed = unacked_packets.largest_observed(); | 42 const QuicPacketNumber largest_observed = unacked_packets.largest_observed(); |
| 43 loss_detection_timeout_ = QuicTime::Zero(); | 43 loss_detection_timeout_ = QuicTime::Zero(); |
| 44 QuicTime::Delta loss_delay = QuicTime::Delta::Max( | 44 QuicTime::Delta loss_delay = QuicTime::Delta::Max( |
| 45 QuicTime::Delta::FromMilliseconds(kMinLossDelayMs), | 45 QuicTime::Delta::FromMilliseconds(kMinLossDelayMs), |
| 46 QuicTime::Delta::Max(rtt_stats.smoothed_rtt(), rtt_stats.latest_rtt()) | 46 QuicTime::Delta::Max(rtt_stats.smoothed_rtt(), rtt_stats.latest_rtt()) |
| 47 .Multiply(kLossDelayMultiplier)); | 47 .Multiply(kLossDelayMultiplier)); |
| 48 | 48 |
| 49 QuicPacketNumber packet_number = unacked_packets.GetLeastUnacked(); | 49 QuicPacketNumber packet_number = unacked_packets.GetLeastUnacked(); |
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| 99 } | 99 } |
| 100 } | 100 } |
| 101 } | 101 } |
| 102 } | 102 } |
| 103 | 103 |
| 104 QuicTime GeneralLossAlgorithm::GetLossTimeout() const { | 104 QuicTime GeneralLossAlgorithm::GetLossTimeout() const { |
| 105 return loss_detection_timeout_; | 105 return loss_detection_timeout_; |
| 106 } | 106 } |
| 107 | 107 |
| 108 } // namespace net | 108 } // namespace net |
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