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Unified Diff: net/quic/congestion_control/time_loss_algorithm.cc

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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Index: net/quic/congestion_control/time_loss_algorithm.cc
diff --git a/net/quic/congestion_control/time_loss_algorithm.cc b/net/quic/congestion_control/time_loss_algorithm.cc
deleted file mode 100644
index b5f90b70096e640749f1cc72ef2f3b80329f0332..0000000000000000000000000000000000000000
--- a/net/quic/congestion_control/time_loss_algorithm.cc
+++ /dev/null
@@ -1,73 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "net/quic/congestion_control/time_loss_algorithm.h"
-
-#include "net/quic/congestion_control/rtt_stats.h"
-#include "net/quic/quic_protocol.h"
-
-namespace net {
-namespace {
-
-// The minimum delay before a packet will be considered lost,
-// regardless of SRTT. Half of the minimum TLP, since the loss algorithm only
-// triggers when a nack has been receieved for the packet.
-static const size_t kMinLossDelayMs = 5;
-
-// How many RTTs the algorithm waits before determining a packet is lost.
-static const double kLossDelayMultiplier = 1.25;
-
-} // namespace
-
-TimeLossAlgorithm::TimeLossAlgorithm()
- : loss_detection_timeout_(QuicTime::Zero()) { }
-
-LossDetectionType TimeLossAlgorithm::GetLossDetectionType() const {
- return kTime;
-}
-
-SequenceNumberSet TimeLossAlgorithm::DetectLostPackets(
- const QuicUnackedPacketMap& unacked_packets,
- const QuicTime& time,
- QuicPacketSequenceNumber largest_observed,
- const RttStats& rtt_stats) {
- SequenceNumberSet lost_packets;
- loss_detection_timeout_ = QuicTime::Zero();
- QuicTime::Delta loss_delay = QuicTime::Delta::Max(
- QuicTime::Delta::FromMilliseconds(kMinLossDelayMs),
- QuicTime::Delta::Max(rtt_stats.smoothed_rtt(), rtt_stats.latest_rtt())
- .Multiply(kLossDelayMultiplier));
-
- QuicPacketSequenceNumber sequence_number = unacked_packets.GetLeastUnacked();
- for (QuicUnackedPacketMap::const_iterator it = unacked_packets.begin();
- it != unacked_packets.end() && sequence_number <= largest_observed;
- ++it, ++sequence_number) {
- if (!it->in_flight) {
- continue;
- }
- LOG_IF(DFATAL, it->nack_count == 0 && it->sent_time.IsInitialized())
- << "All packets less than largest observed should have been nacked."
- << "sequence_number:" << sequence_number
- << " largest_observed:" << largest_observed;
-
- // Packets are sent in order, so break when we haven't waited long enough
- // to lose any more packets and leave the loss_time_ set for the timeout.
- QuicTime when_lost = it->sent_time.Add(loss_delay);
- if (time < when_lost) {
- loss_detection_timeout_ = when_lost;
- break;
- }
- lost_packets.insert(sequence_number);
- }
-
- return lost_packets;
-}
-
-// loss_time_ is updated in DetectLostPackets, which must be called every time
-// an ack is received or the timeout expires.
-QuicTime TimeLossAlgorithm::GetLossTimeout() const {
- return loss_detection_timeout_;
-}
-
-} // namespace net
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