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Merge branch 'atp' of https://github.com/birarda/hifi into protocol
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commit
8ebdb6d154
3 changed files with 4 additions and 175 deletions
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//
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// SeqNum.cpp
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// libraries/networking/src/udt
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//
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// Created by Clement on 7/23/15.
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// Copyright 2015 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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#include "SeqNum.h"
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int udt::seqlen(const SeqNum& seq1, const SeqNum& seq2) {
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return (seq1._value <= seq2._value) ? (seq2._value - seq1._value + 1)
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: (seq2._value - seq1._value + SeqNum::MAX + 2);
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}
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int udt::seqoff(const SeqNum& seq1, const SeqNum& seq2) {
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if (glm::abs(seq1._value - seq2._value) < SeqNum::THRESHOLD) {
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return seq2._value - seq1._value;
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}
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if (seq1._value < seq2._value) {
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return seq2._value - seq1._value - SeqNum::MAX - 1;
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}
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return seq2._value - seq1._value + SeqNum::MAX + 1;
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}
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//
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// SeqNum.h
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// libraries/networking/src/udt
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//
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// Created by Clement on 7/23/15.
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// Copyright 2015 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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#ifndef hifi_SeqNum_h
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#define hifi_SeqNum_h
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#include <functional>
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#include <glm/detail/func_common.hpp>
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namespace udt {
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class SeqNum {
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public:
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// Base type of sequence numbers
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using Type = uint32_t;
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// Values are for 29 bit SeqNum
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static const Type THRESHOLD = 0x0FFFFFFF; // threshold for comparing sequence numbers
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static const Type MAX = 0x1FFFFFFF; // maximum sequence number used in UDT
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SeqNum() = default;
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SeqNum(const SeqNum& other) : _value(other._value) {}
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// Only explicit conversions
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explicit SeqNum(char* value) { _value = (*reinterpret_cast<int32_t*>(value)) & MAX; }
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explicit SeqNum(Type value) { _value = (value <= MAX) ? value : MAX; }
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explicit operator Type() { return _value; }
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inline SeqNum& operator++() {
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_value = (_value == MAX) ? 0 : ++_value;
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return *this;
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}
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inline SeqNum& operator--() {
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_value = (_value == 0) ? MAX : --_value;
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return *this;
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}
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inline SeqNum operator++(int) {
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SeqNum before = *this;
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(*this)++;
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return before;
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}
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inline SeqNum operator--(int) {
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SeqNum before = *this;
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(*this)--;
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return before;
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}
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inline SeqNum& operator=(const SeqNum& other) {
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_value = other._value;
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return *this;
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}
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inline SeqNum& operator+=(Type inc) {
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_value = (_value + inc > MAX) ? _value + inc - (MAX + 1) : _value + inc;
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return *this;
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}
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inline SeqNum& operator-=(Type dec) {
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_value = (_value < dec) ? MAX - (dec - _value + 1) : _value - dec;
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return *this;
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}
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inline bool operator==(const SeqNum& other) const {
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return _value == other._value;
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}
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inline bool operator!=(const SeqNum& other) const {
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return _value != other._value;
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}
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friend bool operator<(const SeqNum& a, const SeqNum& b);
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friend bool operator>(const SeqNum& a, const SeqNum& b);
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friend bool operator<=(const SeqNum& a, const SeqNum& b);
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friend bool operator>=(const SeqNum& a, const SeqNum& b);
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friend SeqNum operator+(const SeqNum a, const Type& b);
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friend SeqNum operator+(const Type& a, const SeqNum b);
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friend SeqNum operator-(const SeqNum a, const Type& b);
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friend SeqNum operator-(const Type& a, const SeqNum b);
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friend int seqlen(const SeqNum& seq1, const SeqNum& seq2);
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friend int seqoff(const SeqNum& seq1, const SeqNum& seq2);
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private:
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Type _value { 0 };
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friend struct std::hash<SeqNum>;
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};
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inline bool operator<(const SeqNum& a, const SeqNum& b) {
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return (glm::abs(a._value - b._value) < SeqNum::THRESHOLD) ? a._value < b._value : b._value < a._value;
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}
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inline bool operator>(const SeqNum& a, const SeqNum& b) {
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return (glm::abs(a._value - b._value) < SeqNum::THRESHOLD) ? a._value > b._value : b._value > a._value;
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}
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inline bool operator<=(const SeqNum& a, const SeqNum& b) {
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return (glm::abs(a._value - b._value) < SeqNum::THRESHOLD) ? a._value <= b._value : b._value <= a._value;
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}
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inline bool operator>=(const SeqNum& a, const SeqNum& b) {
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return (glm::abs(a._value - b._value) < SeqNum::THRESHOLD) ? a._value >= b._value : b._value >= a._value;
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}
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inline SeqNum operator+(SeqNum a, const SeqNum::Type& b) {
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a += b;
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return a;
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}
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inline SeqNum operator+(const SeqNum::Type& a, SeqNum b) {
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b += a;
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return b;
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}
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inline SeqNum operator-(SeqNum a, const SeqNum::Type& b) {
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a -= b;
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return a;
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}
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inline SeqNum operator-(const SeqNum::Type& a, SeqNum b) {
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b -= a;
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return b;
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}
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int seqlen(const SeqNum& seq1, const SeqNum& seq2);
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int seqoff(const SeqNum& seq1, const SeqNum& seq2);
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}
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template<> struct std::hash<udt::SeqNum> {
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size_t operator()(const udt::SeqNum& seqNum) const {
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return std::hash<unsigned long>()(seqNum._value);
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}
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};
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#endif // hifi_SeqNum_h
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@ -144,7 +144,10 @@ void Socket::readPendingDatagrams() {
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void Socket::rateControlSync() {
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// TODO: enumerate our list of connections and ask each of them to send off periodic ACK packet for rate control
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// enumerate our list of connections and ask each of them to send off periodic ACK packet for rate control
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for (auto& connection : _connectionsHash) {
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connection.second->sendACK();
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}
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if (_synTimer.interval() != _synInterval) {
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// if the _synTimer interval doesn't match the current _synInterval (changes when the CC factory is changed)
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