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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 // Cubic algorithm, helper class to TCP cubic. | 5 // Cubic algorithm, helper class to TCP cubic. |
| 6 // For details see http://netsrv.csc.ncsu.edu/export/cubic_a_new_tcp_2008.pdf. | 6 // For details see http://netsrv.csc.ncsu.edu/export/cubic_a_new_tcp_2008.pdf. |
| 7 | 7 |
| 8 #ifndef NET_QUIC_CONGESTION_CONTROL_CUBIC_H_ | 8 #ifndef NET_QUIC_CONGESTION_CONTROL_CUBIC_H_ |
| 9 #define NET_QUIC_CONGESTION_CONTROL_CUBIC_H_ | 9 #define NET_QUIC_CONGESTION_CONTROL_CUBIC_H_ |
| 10 | 10 |
| 11 #include "base/basictypes.h" | 11 #include <stdint.h> |
| 12 |
| 13 #include "base/macros.h" |
| 12 #include "net/base/net_export.h" | 14 #include "net/base/net_export.h" |
| 13 #include "net/quic/quic_bandwidth.h" | 15 #include "net/quic/quic_bandwidth.h" |
| 14 #include "net/quic/quic_clock.h" | 16 #include "net/quic/quic_clock.h" |
| 15 #include "net/quic/quic_connection_stats.h" | 17 #include "net/quic/quic_connection_stats.h" |
| 16 #include "net/quic/quic_time.h" | 18 #include "net/quic/quic_time.h" |
| 17 | 19 |
| 18 namespace net { | 20 namespace net { |
| 19 | 21 |
| 20 class NET_EXPORT_PRIVATE Cubic { | 22 class NET_EXPORT_PRIVATE Cubic { |
| 21 public: | 23 public: |
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| 78 // Number of acked packets since the cycle started (epoch). | 80 // Number of acked packets since the cycle started (epoch). |
| 79 QuicPacketCount acked_packets_count_; | 81 QuicPacketCount acked_packets_count_; |
| 80 | 82 |
| 81 // TCP Reno equivalent congestion window in packets. | 83 // TCP Reno equivalent congestion window in packets. |
| 82 QuicPacketCount estimated_tcp_congestion_window_; | 84 QuicPacketCount estimated_tcp_congestion_window_; |
| 83 | 85 |
| 84 // Origin point of cubic function. | 86 // Origin point of cubic function. |
| 85 QuicPacketCount origin_point_congestion_window_; | 87 QuicPacketCount origin_point_congestion_window_; |
| 86 | 88 |
| 87 // Time to origin point of cubic function in 2^10 fractions of a second. | 89 // Time to origin point of cubic function in 2^10 fractions of a second. |
| 88 uint32 time_to_origin_point_; | 90 uint32_t time_to_origin_point_; |
| 89 | 91 |
| 90 // Last congestion window in packets computed by cubic function. | 92 // Last congestion window in packets computed by cubic function. |
| 91 QuicPacketCount last_target_congestion_window_; | 93 QuicPacketCount last_target_congestion_window_; |
| 92 | 94 |
| 93 DISALLOW_COPY_AND_ASSIGN(Cubic); | 95 DISALLOW_COPY_AND_ASSIGN(Cubic); |
| 94 }; | 96 }; |
| 95 | 97 |
| 96 } // namespace net | 98 } // namespace net |
| 97 | 99 |
| 98 #endif // NET_QUIC_CONGESTION_CONTROL_CUBIC_H_ | 100 #endif // NET_QUIC_CONGESTION_CONTROL_CUBIC_H_ |
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