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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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/rtt_stats.h" | 5 #include "net/quic/congestion_control/rtt_stats.h" |
| 6 | 6 |
| 7 #include <cstdlib> // std::abs | 7 #include <cstdlib> // std::abs |
| 8 | 8 |
| 9 #include "net/quic/quic_flags.h" | 9 #include "net/quic/quic_flags.h" |
| 10 | 10 |
| (...skipping 19 matching lines...) Expand all Loading... |
| 30 min_rtt_(QuicTime::Delta::Zero()), | 30 min_rtt_(QuicTime::Delta::Zero()), |
| 31 smoothed_rtt_(QuicTime::Delta::Zero()), | 31 smoothed_rtt_(QuicTime::Delta::Zero()), |
| 32 previous_srtt_(QuicTime::Delta::Zero()), | 32 previous_srtt_(QuicTime::Delta::Zero()), |
| 33 mean_deviation_(QuicTime::Delta::Zero()), | 33 mean_deviation_(QuicTime::Delta::Zero()), |
| 34 initial_rtt_us_(kInitialRttMs * kNumMicrosPerMilli), | 34 initial_rtt_us_(kInitialRttMs * kNumMicrosPerMilli), |
| 35 forced_windowed_min_rtt_(QuicTime::Delta::Zero()), | 35 forced_windowed_min_rtt_(QuicTime::Delta::Zero()), |
| 36 forced_windowed_min_rtt_time_(QuicTime::Zero()), | 36 forced_windowed_min_rtt_time_(QuicTime::Zero()), |
| 37 num_samples_for_forced_min_(0), | 37 num_samples_for_forced_min_(0), |
| 38 windowed_min_rtt_( | 38 windowed_min_rtt_( |
| 39 QuicTime::Delta::FromMilliseconds(kMinRttWindowLengthMs), | 39 QuicTime::Delta::FromMilliseconds(kMinRttWindowLengthMs), |
| 40 QuicTime::Delta::Zero()) {} | 40 QuicTime::Delta::Zero(), |
| 41 QuicTime::Zero()) {} |
| 41 | 42 |
| 42 void RttStats::SampleNewWindowedMinRtt(uint32_t num_samples) { | 43 void RttStats::SampleNewWindowedMinRtt(uint32_t num_samples) { |
| 43 num_samples_for_forced_min_ = num_samples; | 44 num_samples_for_forced_min_ = num_samples; |
| 44 forced_windowed_min_rtt_ = QuicTime::Delta::Zero(); | 45 forced_windowed_min_rtt_ = QuicTime::Delta::Zero(); |
| 45 forced_windowed_min_rtt_time_ = QuicTime::Zero(); | 46 forced_windowed_min_rtt_time_ = QuicTime::Zero(); |
| 46 } | 47 } |
| 47 | 48 |
| 48 void RttStats::ExpireSmoothedMetrics() { | 49 void RttStats::ExpireSmoothedMetrics() { |
| 49 mean_deviation_ = max(mean_deviation_, | 50 mean_deviation_ = max(mean_deviation_, |
| 50 QuicTime::Delta::FromMicroseconds(std::abs( | 51 QuicTime::Delta::FromMicroseconds(std::abs( |
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| 120 latest_rtt_ = QuicTime::Delta::Zero(); | 121 latest_rtt_ = QuicTime::Delta::Zero(); |
| 121 min_rtt_ = QuicTime::Delta::Zero(); | 122 min_rtt_ = QuicTime::Delta::Zero(); |
| 122 smoothed_rtt_ = QuicTime::Delta::Zero(); | 123 smoothed_rtt_ = QuicTime::Delta::Zero(); |
| 123 mean_deviation_ = QuicTime::Delta::Zero(); | 124 mean_deviation_ = QuicTime::Delta::Zero(); |
| 124 initial_rtt_us_ = kInitialRttMs * kNumMicrosPerMilli; | 125 initial_rtt_us_ = kInitialRttMs * kNumMicrosPerMilli; |
| 125 num_samples_for_forced_min_ = 0; | 126 num_samples_for_forced_min_ = 0; |
| 126 windowed_min_rtt_.Reset(QuicTime::Delta::Zero(), QuicTime::Zero()); | 127 windowed_min_rtt_.Reset(QuicTime::Delta::Zero(), QuicTime::Zero()); |
| 127 } | 128 } |
| 128 | 129 |
| 129 } // namespace net | 130 } // namespace net |
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