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Unified Diff: net/quic/congestion_control/tcp_cubic_sender_base.h

Issue 2193073003: Move shared files in net/quic/ into net/quic/core/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: io_thread_unittest.cc Created 4 years, 5 months ago
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Index: net/quic/congestion_control/tcp_cubic_sender_base.h
diff --git a/net/quic/congestion_control/tcp_cubic_sender_base.h b/net/quic/congestion_control/tcp_cubic_sender_base.h
deleted file mode 100644
index 55ac920f2892d3dae559393d062bcf10810937d8..0000000000000000000000000000000000000000
--- a/net/quic/congestion_control/tcp_cubic_sender_base.h
+++ /dev/null
@@ -1,158 +0,0 @@
-// Copyright (c) 2012 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.
-//
-// TCP cubic send side congestion algorithm, emulates the behavior of TCP cubic.
-
-#ifndef NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_BASE_H_
-#define NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_BASE_H_
-
-#include <stdint.h>
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "net/base/net_export.h"
-#include "net/quic/congestion_control/cubic.h"
-#include "net/quic/congestion_control/hybrid_slow_start.h"
-#include "net/quic/congestion_control/prr_sender.h"
-#include "net/quic/congestion_control/send_algorithm_interface.h"
-#include "net/quic/quic_bandwidth.h"
-#include "net/quic/quic_connection_stats.h"
-#include "net/quic/quic_protocol.h"
-#include "net/quic/quic_time.h"
-
-namespace net {
-
-class RttStats;
-
-// Maximum window to allow when doing bandwidth resumption.
-const QuicPacketCount kMaxResumptionCongestionWindow = 200;
-
-namespace test {
-class TcpCubicSenderBasePeer;
-} // namespace test
-
-class NET_EXPORT_PRIVATE TcpCubicSenderBase : public SendAlgorithmInterface {
- public:
- // Reno option and max_tcp_congestion_window are provided for testing.
- TcpCubicSenderBase(const QuicClock* clock,
- const RttStats* rtt_stats,
- bool reno,
- QuicConnectionStats* stats);
- ~TcpCubicSenderBase() override;
-
- // Start implementation of SendAlgorithmInterface.
- void SetFromConfig(const QuicConfig& config,
- Perspective perspective) override;
- void ResumeConnectionState(
- const CachedNetworkParameters& cached_network_params,
- bool max_bandwidth_resumption) override;
- void SetNumEmulatedConnections(int num_connections) override;
- void OnCongestionEvent(bool rtt_updated,
- QuicByteCount bytes_in_flight,
- const CongestionVector& acked_packets,
- const CongestionVector& lost_packets) override;
- bool OnPacketSent(QuicTime sent_time,
- QuicByteCount bytes_in_flight,
- QuicPacketNumber packet_number,
- QuicByteCount bytes,
- HasRetransmittableData is_retransmittable) override;
- void OnRetransmissionTimeout(bool packets_retransmitted) override;
- void OnConnectionMigration() override;
- QuicTime::Delta TimeUntilSend(QuicTime now,
- QuicByteCount bytes_in_flight) const override;
- QuicBandwidth PacingRate(QuicByteCount bytes_in_flight) const override;
- QuicBandwidth BandwidthEstimate() const override;
- QuicTime::Delta RetransmissionDelay() const override;
- bool InSlowStart() const override;
- bool InRecovery() const override;
-
- protected:
- // Called when resuming a previous bandwidth.
- virtual void SetCongestionWindowFromBandwidthAndRtt(QuicBandwidth bandwidth,
- QuicTime::Delta rtt) = 0;
-
- // Called when initializing the congestion window.
- virtual void SetCongestionWindowInPackets(
- QuicPacketCount congestion_window) = 0;
-
- // Called when initializing the minimum congestion window.
- virtual void SetMinCongestionWindowInPackets(
- QuicPacketCount congestion_window) = 0;
-
- // Called when slow start is exited to set SSTHRESH.
- virtual void ExitSlowstart() = 0;
-
- // Called when a packet is lost.
- virtual void OnPacketLost(QuicPacketNumber largest_loss,
- QuicByteCount lost_bytes,
- QuicByteCount bytes_in_flight) = 0;
-
- // Called when a packet has been acked to possibly increase the congestion
- // window.
- virtual void MaybeIncreaseCwnd(QuicPacketNumber acked_packet_number,
- QuicByteCount acked_bytes,
- QuicByteCount bytes_in_flight) = 0;
-
- // Called when a retransmission has occured which resulted in packets
- // being retransmitted.
- virtual void HandleRetransmissionTimeout() = 0;
-
- // Compute the TCP Reno beta based on the current number of connections.
- float RenoBeta() const;
-
- bool IsCwndLimited(QuicByteCount bytes_in_flight) const;
-
- private:
- friend class test::TcpCubicSenderBasePeer;
-
- // TODO(ianswett): Remove these and migrate to OnCongestionEvent.
- void OnPacketAcked(QuicPacketNumber acked_packet_number,
- QuicByteCount acked_bytes,
- QuicByteCount bytes_in_flight);
-
- protected:
- // TODO(rch): Make these private and clean up subclass access to them.
- HybridSlowStart hybrid_slow_start_;
- PrrSender prr_;
- const RttStats* rtt_stats_;
- QuicConnectionStats* stats_;
-
- // If true, Reno congestion control is used instead of Cubic.
- const bool reno_;
-
- // Number of connections to simulate.
- uint32_t num_connections_;
-
- // Track the largest packet that has been sent.
- QuicPacketNumber largest_sent_packet_number_;
-
- // Track the largest packet that has been acked.
- QuicPacketNumber largest_acked_packet_number_;
-
- // Track the largest packet number outstanding when a CWND cutback occurs.
- QuicPacketNumber largest_sent_at_last_cutback_;
-
- // Whether to use 4 packets as the actual min, but pace lower.
- bool min4_mode_;
-
- // Whether the last loss event caused us to exit slowstart.
- // Used for stats collection of slowstart_packets_lost
- bool last_cutback_exited_slowstart_;
-
- // When true, exit slow start with large cutback of congestion window.
- bool slow_start_large_reduction_;
-
- // When true, use rate based sending instead of only sending if there's CWND.
- bool rate_based_sending_;
-
- // When true, use unity pacing instead of PRR.
- bool no_prr_;
-
- private:
- DISALLOW_COPY_AND_ASSIGN(TcpCubicSenderBase);
-};
-
-} // namespace net
-
-#endif // NET_QUIC_CONGESTION_CONTROL_TCP_CUBIC_SENDER_BASE_H_
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