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

Issue 623213004: replace OVERRIDE and FINAL with override and final in net/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: undo unwanted change in comment Created 6 years, 2 months ago
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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 1 // Copyright (c) 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 // A send algorithm which adds pacing on top of an another send algorithm. 5 // A send algorithm which adds pacing on top of an another send algorithm.
6 // It uses the underlying sender's bandwidth estimate to determine the 6 // It uses the underlying sender's bandwidth estimate to determine the
7 // pacing rate to be used. It also takes into consideration the expected 7 // pacing rate to be used. It also takes into consideration the expected
8 // resolution of the underlying alarm mechanism to ensure that alarms are 8 // resolution of the underlying alarm mechanism to ensure that alarms are
9 // not set too aggressively, and to smooth out variations. 9 // not set too aggressively, and to smooth out variations.
10 10
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28 // Create a PacingSender to wrap the specified sender. |alarm_granularity| 28 // Create a PacingSender to wrap the specified sender. |alarm_granularity|
29 // indicates to the pacer to send that far into the future, since it should 29 // indicates to the pacer to send that far into the future, since it should
30 // not expect a callback before that time delta. |initial_packet_burst| is 30 // not expect a callback before that time delta. |initial_packet_burst| is
31 // the number of packets sent without pacing after quiescence. 31 // the number of packets sent without pacing after quiescence.
32 PacingSender(SendAlgorithmInterface* sender, 32 PacingSender(SendAlgorithmInterface* sender,
33 QuicTime::Delta alarm_granularity, 33 QuicTime::Delta alarm_granularity,
34 uint32 initial_packet_burst); 34 uint32 initial_packet_burst);
35 virtual ~PacingSender(); 35 virtual ~PacingSender();
36 36
37 // SendAlgorithmInterface methods. 37 // SendAlgorithmInterface methods.
38 virtual void SetFromConfig(const QuicConfig& config, bool is_server) OVERRIDE; 38 virtual void SetFromConfig(const QuicConfig& config, bool is_server) override;
39 virtual void SetNumEmulatedConnections(int num_connections) OVERRIDE; 39 virtual void SetNumEmulatedConnections(int num_connections) override;
40 virtual void OnIncomingQuicCongestionFeedbackFrame( 40 virtual void OnIncomingQuicCongestionFeedbackFrame(
41 const QuicCongestionFeedbackFrame& feedback, 41 const QuicCongestionFeedbackFrame& feedback,
42 QuicTime feedback_receive_time) OVERRIDE; 42 QuicTime feedback_receive_time) override;
43 virtual void OnCongestionEvent(bool rtt_updated, 43 virtual void OnCongestionEvent(bool rtt_updated,
44 QuicByteCount bytes_in_flight, 44 QuicByteCount bytes_in_flight,
45 const CongestionVector& acked_packets, 45 const CongestionVector& acked_packets,
46 const CongestionVector& lost_packets) OVERRIDE; 46 const CongestionVector& lost_packets) override;
47 virtual bool OnPacketSent(QuicTime sent_time, 47 virtual bool OnPacketSent(QuicTime sent_time,
48 QuicByteCount bytes_in_flight, 48 QuicByteCount bytes_in_flight,
49 QuicPacketSequenceNumber sequence_number, 49 QuicPacketSequenceNumber sequence_number,
50 QuicByteCount bytes, 50 QuicByteCount bytes,
51 HasRetransmittableData is_retransmittable) OVERRIDE; 51 HasRetransmittableData is_retransmittable) override;
52 virtual void OnRetransmissionTimeout(bool packets_retransmitted) OVERRIDE; 52 virtual void OnRetransmissionTimeout(bool packets_retransmitted) override;
53 virtual void RevertRetransmissionTimeout() OVERRIDE; 53 virtual void RevertRetransmissionTimeout() override;
54 virtual QuicTime::Delta TimeUntilSend( 54 virtual QuicTime::Delta TimeUntilSend(
55 QuicTime now, 55 QuicTime now,
56 QuicByteCount bytes_in_flight, 56 QuicByteCount bytes_in_flight,
57 HasRetransmittableData has_retransmittable_data) const OVERRIDE; 57 HasRetransmittableData has_retransmittable_data) const override;
58 virtual QuicBandwidth BandwidthEstimate() const OVERRIDE; 58 virtual QuicBandwidth BandwidthEstimate() const override;
59 virtual bool HasReliableBandwidthEstimate() const OVERRIDE; 59 virtual bool HasReliableBandwidthEstimate() const override;
60 virtual QuicTime::Delta RetransmissionDelay() const OVERRIDE; 60 virtual QuicTime::Delta RetransmissionDelay() const override;
61 virtual QuicByteCount GetCongestionWindow() const OVERRIDE; 61 virtual QuicByteCount GetCongestionWindow() const override;
62 virtual bool InSlowStart() const OVERRIDE; 62 virtual bool InSlowStart() const override;
63 virtual bool InRecovery() const OVERRIDE; 63 virtual bool InRecovery() const override;
64 virtual QuicByteCount GetSlowStartThreshold() const OVERRIDE; 64 virtual QuicByteCount GetSlowStartThreshold() const override;
65 virtual CongestionControlType GetCongestionControlType() const OVERRIDE; 65 virtual CongestionControlType GetCongestionControlType() const override;
66 66
67 private: 67 private:
68 scoped_ptr<SendAlgorithmInterface> sender_; // Underlying sender. 68 scoped_ptr<SendAlgorithmInterface> sender_; // Underlying sender.
69 QuicTime::Delta alarm_granularity_; 69 QuicTime::Delta alarm_granularity_;
70 uint32 initial_packet_burst_; 70 uint32 initial_packet_burst_;
71 mutable uint32 burst_tokens_; 71 mutable uint32 burst_tokens_;
72 // Send time of the last packet considered delayed. 72 // Send time of the last packet considered delayed.
73 QuicTime last_delayed_packet_sent_time_; 73 QuicTime last_delayed_packet_sent_time_;
74 QuicTime next_packet_send_time_; // When can the next packet be sent. 74 QuicTime next_packet_send_time_; // When can the next packet be sent.
75 mutable bool was_last_send_delayed_; // True when the last send was delayed. 75 mutable bool was_last_send_delayed_; // True when the last send was delayed.
76 bool has_valid_rtt_; // True if we have at least one RTT update. 76 bool has_valid_rtt_; // True if we have at least one RTT update.
77 77
78 DISALLOW_COPY_AND_ASSIGN(PacingSender); 78 DISALLOW_COPY_AND_ASSIGN(PacingSender);
79 }; 79 };
80 80
81 } // namespace net 81 } // namespace net
82 82
83 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_ 83 #endif // NET_QUIC_CONGESTION_CONTROL_PACING_SENDER_H_
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