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changed octree data nacks to repeatedly nack missing seq nums

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This commit is contained in:
wangyix 2014-06-18 11:06:15 -07:00
parent d78ed66616
commit 29723d0ef3
5 changed files with 58 additions and 69 deletions
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17
assignment-client/src/octree/OctreeInboundPacketProcessor.cpp
View file

@ -184,7 +184,8 @@ void OctreeInboundPacketProcessor::trackInboundPacket(const QUuid& nodeUUID, uns
int OctreeInboundPacketProcessor::sendNackPackets() {
int packetsSent = 0;
char packet[MAX_PACKET_SIZE];
NodeToSenderStatsMapIterator i = _singleSenderStats.begin();
while (i != _singleSenderStats.end()) {
@ -206,15 +207,10 @@ int OctreeInboundPacketProcessor::sendNackPackets() {
const SharedNodePointer& destinationNode = NodeList::getInstance()->getNodeHash().value(nodeUUID);
const QSet<unsigned short int>& missingSequenceNumbers = nodeStats.getMissingSequenceNumbers();
// check if there are any sequence numbers that need to be nacked
int numSequenceNumbersAvailable = missingSequenceNumbers.size();
// construct nack packet(s) for this node
QSet<unsigned short int>::const_iterator missingSequenceNumberIterator = missingSequenceNumbers.begin();
char packet[MAX_PACKET_SIZE];
int numSequenceNumbersAvailable = missingSequenceNumbers.size();
QSet<unsigned short int>::const_iterator missingSequenceNumberIterator = missingSequenceNumbers.constBegin();
while (numSequenceNumbersAvailable > 0) {
char* dataAt = packet;
@ -243,8 +239,7 @@ int OctreeInboundPacketProcessor::sendNackPackets() {
numSequenceNumbersAvailable -= numSequenceNumbers;
// send it
qint64 bytesWritten = NodeList::getInstance()->writeUnverifiedDatagram(packet, dataAt - packet, destinationNode);
NodeList::getInstance()->writeUnverifiedDatagram(packet, dataAt - packet, destinationNode);
packetsSent++;
}
i++;

86
interface/src/Application.cpp
View file

@ -2102,19 +2102,19 @@ void Application::updateMyAvatar(float deltaTime) {
const quint64 TOO_LONG_SINCE_LAST_NACK = 1 * USECS_PER_SECOND;
if (sinceLastNack > TOO_LONG_SINCE_LAST_NACK) {
_lastNackTime = now;
sendNack();
sendNackPackets();
}
}
}
void Application::sendNack() {
int Application::sendNackPackets() {
if (Menu::getInstance()->isOptionChecked(MenuOption::DisableNackPackets)) {
return;
return 0;
}
int packetsSent = 0;
char packet[MAX_PACKET_SIZE];
NodeList* nodeList = NodeList::getInstance();
// iterates thru all nodes in NodeList
foreach(const SharedNodePointer& node, NodeList::getInstance()->getNodeHash()) {
@ -2125,14 +2125,14 @@ void Application::sendNack() {
|| node->getType() == NodeType::ModelServer)
) {
// if there are octree packets from this node that are waiting to be processed,
// don't send a NACK since the missing packets may be among those waiting packets.
if (_octreeProcessor.hasPacketsToProcessFrom(node)) {
continue;
}
QUuid nodeUUID = node->getUUID();
// if there are octree packets from this node that are waiting to be processed,
// don't send a NACK since the missing packets may be among those waiting packets.
if (_octreeProcessor.hasPacketsToProcessFrom(nodeUUID)) {
continue;
}
_octreeSceneStatsLock.lockForRead();
// retreive octree scene stats of this node
@ -2142,40 +2142,48 @@ void Application::sendNack() {
}
OctreeSceneStats& stats = _octreeServerSceneStats[nodeUUID];
// check if there are any sequence numbers that need to be nacked
int numSequenceNumbersAvailable = stats.getNumSequenceNumbersToNack();
if (numSequenceNumbersAvailable == 0) {
_octreeSceneStatsLock.unlock();
continue;
}
// make copy of missing sequence numbers from stats
const QSet<OCTREE_PACKET_SEQUENCE> missingSequenceNumbers = stats.getMissingSequenceNumbers();
char* dataAt = packet;
int bytesRemaining = MAX_PACKET_SIZE;
// pack header
int numBytesPacketHeader = populatePacketHeader(packet, PacketTypeOctreeDataNack);
dataAt += numBytesPacketHeader;
bytesRemaining -= numBytesPacketHeader;
int numSequenceNumbersRoomFor = (bytesRemaining - sizeof(uint16_t)) / sizeof(OCTREE_PACKET_SEQUENCE);
// calculate and pack the number of sequence numbers
uint16_t numSequenceNumbers = min(numSequenceNumbersAvailable, numSequenceNumbersRoomFor);
uint16_t* numSequenceNumbersAt = (uint16_t*)dataAt;
*numSequenceNumbersAt = numSequenceNumbers;
dataAt += sizeof(uint16_t);
// pack sequence numbers
for (int i = 0; i < numSequenceNumbers; i++) {
OCTREE_PACKET_SEQUENCE* sequenceNumberAt = (OCTREE_PACKET_SEQUENCE*)dataAt;
*sequenceNumberAt = stats.getNextSequenceNumberToNack();
dataAt += sizeof(OCTREE_PACKET_SEQUENCE);
}
_octreeSceneStatsLock.unlock();
nodeList->writeUnverifiedDatagram(packet, dataAt - packet, node);
// construct nack packet(s) for this node
int numSequenceNumbersAvailable = missingSequenceNumbers.size();
QSet<OCTREE_PACKET_SEQUENCE>::const_iterator missingSequenceNumbersIterator = missingSequenceNumbers.constBegin();
while (numSequenceNumbersAvailable > 0) {
char* dataAt = packet;
int bytesRemaining = MAX_PACKET_SIZE;
// pack header
int numBytesPacketHeader = populatePacketHeader(packet, PacketTypeOctreeDataNack);
dataAt += numBytesPacketHeader;
bytesRemaining -= numBytesPacketHeader;
// calculate and pack the number of sequence numbers
int numSequenceNumbersRoomFor = (bytesRemaining - sizeof(uint16_t)) / sizeof(OCTREE_PACKET_SEQUENCE);
uint16_t numSequenceNumbers = min(numSequenceNumbersAvailable, numSequenceNumbersRoomFor);
uint16_t* numSequenceNumbersAt = (uint16_t*)dataAt;
*numSequenceNumbersAt = numSequenceNumbers;
dataAt += sizeof(uint16_t);
// pack sequence numbers
for (int i = 0; i < numSequenceNumbers; i++) {
OCTREE_PACKET_SEQUENCE* sequenceNumberAt = (OCTREE_PACKET_SEQUENCE*)dataAt;
*sequenceNumberAt = *missingSequenceNumbersIterator;
dataAt += sizeof(OCTREE_PACKET_SEQUENCE);
missingSequenceNumbersIterator++;
}
numSequenceNumbersAvailable -= numSequenceNumbers;
// send it
NodeList::getInstance()->writeUnverifiedDatagram(packet, dataAt - packet, node);
packetsSent++;
}
}
}
return packetsSent;
}
void Application::queryOctree(NodeType_t serverType, PacketType packetType, NodeToJurisdictionMap& jurisdictions) {

2
interface/src/Application.h
View file

@ -411,7 +411,7 @@ private:
static void attachNewHeadToNode(Node *newNode);
static void* networkReceive(void* args); // network receive thread
void sendNack();
int sendNackPackets();
MainWindow* _window;
GLCanvas* _glWidget; // our GLCanvas has a couple extra features

16
libraries/octree/src/OctreeSceneStats.cpp
View file

@ -47,7 +47,6 @@ OctreeSceneStats::OctreeSceneStats() :
_incomingReallyLate(0),
_incomingPossibleDuplicate(0),
_missingSequenceNumbers(),
_sequenceNumbersToNack(),
_incomingFlightTimeAverage(samples),
_jurisdictionRoot(NULL)
{
@ -160,7 +159,6 @@ void OctreeSceneStats::copyFromOther(const OctreeSceneStats& other) {
_incomingPossibleDuplicate = other._incomingPossibleDuplicate;
_missingSequenceNumbers = other._missingSequenceNumbers;
_sequenceNumbersToNack = other._sequenceNumbersToNack;
}
@ -946,7 +944,6 @@ void OctreeSceneStats::trackIncomingOctreePacket(const QByteArray& packet,
qDebug() << "found it in _missingSequenceNumbers";
}
_missingSequenceNumbers.remove(sequence);
_sequenceNumbersToNack.remove(sequence);
_incomingLikelyLost--;
_incomingRecovered++;
}
@ -986,7 +983,6 @@ void OctreeSceneStats::trackIncomingOctreePacket(const QByteArray& packet,
for (int missingSequenceInt = expectedInt; missingSequenceInt < sequenceInt; missingSequenceInt++) {
OCTREE_PACKET_SEQUENCE missingSequence = missingSequenceInt >= 0 ? missingSequenceInt : missingSequenceInt + UINT16_RANGE;
_missingSequenceNumbers << missingSequence;
_sequenceNumbersToNack << missingSequence;
}
_incomingLastSequence = sequence;
@ -1025,7 +1021,6 @@ void OctreeSceneStats::trackIncomingOctreePacket(const QByteArray& packet,
qDebug() << "pruning really old missing sequence:" << missingItem;
}
_missingSequenceNumbers.remove(missingItem);
_sequenceNumbersToNack.remove(missingItem);
}
}
}
@ -1038,13 +1033,6 @@ void OctreeSceneStats::trackIncomingOctreePacket(const QByteArray& packet,
}
}
int OctreeSceneStats::getNumSequenceNumbersToNack() const {
return _sequenceNumbersToNack.size();
}
uint16_t OctreeSceneStats::getNextSequenceNumberToNack() {
QSet<uint16_t>::Iterator it = _sequenceNumbersToNack.begin();
uint16_t sequenceNumber = *it;
_sequenceNumbersToNack.remove(sequenceNumber);
return sequenceNumber;
const QSet<OCTREE_PACKET_SEQUENCE>& OctreeSceneStats::getMissingSequenceNumbers() const {
return _missingSequenceNumbers;
}

6
libraries/octree/src/OctreeSceneStats.h
View file

@ -172,9 +172,8 @@ public:
quint32 getIncomingReallyLate() const { return _incomingReallyLate; }
quint32 getIncomingPossibleDuplicate() const { return _incomingPossibleDuplicate; }
float getIncomingFlightTimeAverage() { return _incomingFlightTimeAverage.getAverage(); }
int getNumSequenceNumbersToNack() const;
OCTREE_PACKET_SEQUENCE getNextSequenceNumberToNack();
const QSet<OCTREE_PACKET_SEQUENCE>& getMissingSequenceNumbers() const;
private:
@ -277,7 +276,6 @@ private:
quint32 _incomingReallyLate; /// out of order and later than MAX_MISSING_SEQUENCE_OLD_AGE late
quint32 _incomingPossibleDuplicate; /// out of order possibly a duplicate
QSet<OCTREE_PACKET_SEQUENCE> _missingSequenceNumbers;
QSet<OCTREE_PACKET_SEQUENCE> _sequenceNumbersToNack;
SimpleMovingAverage _incomingFlightTimeAverage;
// features related items