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Side by Side Diff: net/quic/core/congestion_control/hybrid_slow_start.cc

Issue 2566703002: Various formatting cleanups to net/quic/core/frames (Closed)
Patch Set: Fix Created 4 years 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 #include "net/quic/core/congestion_control/hybrid_slow_start.h" 5 #include "net/quic/core/congestion_control/hybrid_slow_start.h"
6 6
7 #include <algorithm> 7 #include <algorithm>
8 8
9
10 namespace net { 9 namespace net {
11 10
12 // Note(pwestin): the magic clamping numbers come from the original code in 11 // Note(pwestin): the magic clamping numbers come from the original code in
13 // tcp_cubic.c. 12 // tcp_cubic.c.
14 const int64_t kHybridStartLowWindow = 16; 13 const int64_t kHybridStartLowWindow = 16;
15 // Number of delay samples for detecting the increase of delay. 14 // Number of delay samples for detecting the increase of delay.
16 const uint32_t kHybridStartMinSamples = 8; 15 const uint32_t kHybridStartMinSamples = 8;
17 // Exit slow start if the min rtt has increased by more than 1/8th. 16 // Exit slow start if the min rtt has increased by more than 1/8th.
18 const int kHybridStartDelayFactorExp = 3; // 2^3 = 8 17 const int kHybridStartDelayFactorExp = 3; // 2^3 = 8
19 // The original paper specifies 2 and 8ms, but those have changed over time. 18 // The original paper specifies 2 and 8ms, but those have changed over time.
(...skipping 76 matching lines...) Expand 10 before | Expand all | Expand 10 after
96 hystart_found_ = DELAY; 95 hystart_found_ = DELAY;
97 } 96 }
98 } 97 }
99 // Exit from slow start if the cwnd is greater than 16 and 98 // Exit from slow start if the cwnd is greater than 16 and
100 // increasing delay is found. 99 // increasing delay is found.
101 return congestion_window >= kHybridStartLowWindow && 100 return congestion_window >= kHybridStartLowWindow &&
102 hystart_found_ != NOT_FOUND; 101 hystart_found_ != NOT_FOUND;
103 } 102 }
104 103
105 } // namespace net 104 } // namespace net
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