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Side by Side Diff: net/quic/congestion_control/tcp_cubic_sender.h

Issue 183683025: CL generated with data from dead-code analysis using Scythe (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 6 years, 9 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 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 // TCP cubic send side congestion algorithm, emulates the behavior of 5 // TCP cubic send side congestion algorithm, emulates the behavior of
6 // TCP cubic. 6 // TCP cubic.
7 7
8 #ifndef NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_ 8 #ifndef NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_
9 #define NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_ 9 #define NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_
10 10
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64 virtual QuicTime::Delta SmoothedRtt() const OVERRIDE; 64 virtual QuicTime::Delta SmoothedRtt() const OVERRIDE;
65 virtual QuicTime::Delta RetransmissionDelay() const OVERRIDE; 65 virtual QuicTime::Delta RetransmissionDelay() const OVERRIDE;
66 virtual QuicByteCount GetCongestionWindow() const OVERRIDE; 66 virtual QuicByteCount GetCongestionWindow() const OVERRIDE;
67 // End implementation of SendAlgorithmInterface. 67 // End implementation of SendAlgorithmInterface.
68 68
69 private: 69 private:
70 friend class test::TcpCubicSenderPeer; 70 friend class test::TcpCubicSenderPeer;
71 71
72 QuicByteCount AvailableSendWindow(); 72 QuicByteCount AvailableSendWindow();
73 QuicByteCount SendWindow(); 73 QuicByteCount SendWindow();
74 void Reset();
75 void MaybeIncreaseCwnd(QuicPacketSequenceNumber acked_sequence_number); 74 void MaybeIncreaseCwnd(QuicPacketSequenceNumber acked_sequence_number);
76 bool IsCwndLimited() const; 75 bool IsCwndLimited() const;
77 bool InRecovery() const; 76 bool InRecovery() const;
78 void OnTimeOut();
79 77
80 HybridSlowStart hybrid_slow_start_; 78 HybridSlowStart hybrid_slow_start_;
81 Cubic cubic_; 79 Cubic cubic_;
82 80
83 // Reno provided for testing. 81 // Reno provided for testing.
84 const bool reno_; 82 const bool reno_;
85 83
86 // ACK counter for the Reno implementation. 84 // ACK counter for the Reno implementation.
87 int64 congestion_window_count_; 85 int64 congestion_window_count_;
88 86
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132 // Approximation of standard deviation, the error is roughly 1.25 times 130 // Approximation of standard deviation, the error is roughly 1.25 times
133 // larger than the standard deviation, for a normally distributed signal. 131 // larger than the standard deviation, for a normally distributed signal.
134 QuicTime::Delta mean_deviation_; 132 QuicTime::Delta mean_deviation_;
135 133
136 DISALLOW_COPY_AND_ASSIGN(TcpCubicSender); 134 DISALLOW_COPY_AND_ASSIGN(TcpCubicSender);
137 }; 135 };
138 136
139 } // namespace net 137 } // namespace net
140 138
141 #endif // NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_ 139 #endif // NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_H_
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