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overte-JulianGro/assignment-client/src/octree/OctreeSendThread.cpp

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//
// OctreeSendThread.cpp
// assignment-client/src/octree
//
// Created by Brad Hefta-Gaub on 8/21/13.
// Copyright 2013 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
#include <NodeList.h>
#include <PacketHeaders.h>
#include <PerfStat.h>
#include <SharedUtil.h>
#include "OctreeSendThread.h"
#include "OctreeServer.h"
#include "OctreeServerConsts.h"
quint64 startSceneSleepTime = 0;
quint64 endSceneSleepTime = 0;
OctreeSendThread::OctreeSendThread(const SharedAssignmentPointer& myAssignment, const SharedNodePointer& node) :
_myAssignment(myAssignment),
_myServer(static_cast<OctreeServer*>(myAssignment.data())),
_node(node),
_nodeUUID(node->getUUID()),
_packetData(),
_nodeMissingCount(0),
_isShuttingDown(false)
{
QString safeServerName("Octree");
if (_myServer) {
safeServerName = _myServer->getMyServerName();
}
qDebug() << qPrintable(safeServerName) << "server [" << _myServer << "]: client connected "
"- starting sending thread [" << this << "]";
OctreeServer::clientConnected();
}
OctreeSendThread::~OctreeSendThread() {
QString safeServerName("Octree");
if (_myServer) {
safeServerName = _myServer->getMyServerName();
}
qDebug() << qPrintable(safeServerName) << "server [" << _myServer << "]: client disconnected "
"- ending sending thread [" << this << "]";
OctreeServer::clientDisconnected();
OctreeServer::stopTrackingThread(this);
_node.clear();
_myAssignment.clear();
}
void OctreeSendThread::setIsShuttingDown() {
_isShuttingDown = true;
}
bool OctreeSendThread::process() {
if (_isShuttingDown) {
return false; // exit early if we're shutting down
}
// check that our server and assignment is still valid
if (!_myServer || !_myAssignment) {
return false; // exit early if it's not, it means the server is shutting down
}
OctreeServer::didProcess(this);
quint64 start = usecTimestampNow();
// don't do any send processing until the initial load of the octree is complete...
if (_myServer->isInitialLoadComplete()) {
if (_node) {
_nodeMissingCount = 0;
OctreeQueryNode* nodeData = static_cast<OctreeQueryNode*>(_node->getLinkedData());
// Sometimes the node data has not yet been linked, in which case we can't really do anything
if (nodeData && !nodeData->isShuttingDown()) {
bool viewFrustumChanged = nodeData->updateCurrentViewFrustum();
packetDistributor(nodeData, viewFrustumChanged);
}
}
}
if (_isShuttingDown) {
return false; // exit early if we're shutting down
}
// Only sleep if we're still running and we got the lock last time we tried, otherwise try to get the lock asap
if (isStillRunning()) {
// dynamically sleep until we need to fire off the next set of octree elements
int elapsed = (usecTimestampNow() - start);
int usecToSleep = OCTREE_SEND_INTERVAL_USECS - elapsed;
if (usecToSleep > 0) {
PerformanceWarning warn(false,"OctreeSendThread... usleep()",false,&_usleepTime,&_usleepCalls);
usleep(usecToSleep);
} else {
const int MIN_USEC_TO_SLEEP = 1;
usleep(MIN_USEC_TO_SLEEP);
}
}
return isStillRunning(); // keep running till they terminate us
}
quint64 OctreeSendThread::_usleepTime = 0;
quint64 OctreeSendThread::_usleepCalls = 0;
quint64 OctreeSendThread::_totalBytes = 0;
quint64 OctreeSendThread::_totalWastedBytes = 0;
quint64 OctreeSendThread::_totalPackets = 0;
int OctreeSendThread::handlePacketSend(OctreeQueryNode* nodeData, int& trueBytesSent, int& truePacketsSent) {
OctreeServer::didHandlePacketSend(this);
// if we're shutting down, then exit early
if (nodeData->isShuttingDown()) {
return 0;
}
bool debug = _myServer->wantsDebugSending();
quint64 now = usecTimestampNow();
bool packetSent = false; // did we send a packet?
int packetsSent = 0;
// Here's where we check to see if this packet is a duplicate of the last packet. If it is, we will silently
// obscure the packet and not send it. This allows the callers and upper level logic to not need to know about
// this rate control savings.
if (nodeData->shouldSuppressDuplicatePacket()) {
nodeData->resetOctreePacket(); // we still need to reset it though!
return packetsSent; // without sending...
}
// If we've got a stats message ready to send, then see if we can piggyback them together
if (nodeData->stats.isReadyToSend() && !nodeData->isShuttingDown()) {
// Send the stats message to the client
unsigned char* statsMessage = nodeData->stats.getStatsMessage();
int statsMessageLength = nodeData->stats.getStatsMessageLength();
int piggyBackSize = nodeData->getPacketLength() + statsMessageLength;
// If the size of the stats message and the voxel message will fit in a packet, then piggyback them
if (piggyBackSize < MAX_PACKET_SIZE) {
// copy voxel message to back of stats message
memcpy(statsMessage + statsMessageLength, nodeData->getPacket(), nodeData->getPacketLength());
statsMessageLength += nodeData->getPacketLength();
// since a stats message is only included on end of scene, don't consider any of these bytes "wasted", since
// there was nothing else to send.
int thisWastedBytes = 0;
_totalWastedBytes += thisWastedBytes;
_totalBytes += nodeData->getPacketLength();
_totalPackets++;
if (debug) {
const unsigned char* messageData = nodeData->getPacket();
int numBytesPacketHeader = numBytesForPacketHeader(reinterpret_cast<const char*>(messageData));
const unsigned char* dataAt = messageData + numBytesPacketHeader;
dataAt += sizeof(OCTREE_PACKET_FLAGS);
OCTREE_PACKET_SEQUENCE sequence = (*(OCTREE_PACKET_SEQUENCE*)dataAt);
dataAt += sizeof(OCTREE_PACKET_SEQUENCE);
OCTREE_PACKET_SENT_TIME timestamp = (*(OCTREE_PACKET_SENT_TIME*)dataAt);
dataAt += sizeof(OCTREE_PACKET_SENT_TIME);
qDebug() << "Adding stats to packet at " << now << " [" << _totalPackets <<"]: sequence: " << sequence <<
" timestamp: " << timestamp <<
" statsMessageLength: " << statsMessageLength <<
" original size: " << nodeData->getPacketLength() << " [" << _totalBytes <<
"] wasted bytes:" << thisWastedBytes << " [" << _totalWastedBytes << "]";
}
// actually send it
OctreeServer::didCallWriteDatagram(this);
NodeList::getInstance()->writeDatagram((char*) statsMessage, statsMessageLength, _node);
packetSent = true;
} else {
// not enough room in the packet, send two packets
OctreeServer::didCallWriteDatagram(this);
NodeList::getInstance()->writeDatagram((char*) statsMessage, statsMessageLength, _node);
// since a stats message is only included on end of scene, don't consider any of these bytes "wasted", since
// there was nothing else to send.
int thisWastedBytes = 0;
_totalWastedBytes += thisWastedBytes;
_totalBytes += statsMessageLength;
_totalPackets++;
if (debug) {
const unsigned char* messageData = nodeData->getPacket();
int numBytesPacketHeader = numBytesForPacketHeader(reinterpret_cast<const char*>(messageData));
const unsigned char* dataAt = messageData + numBytesPacketHeader;
dataAt += sizeof(OCTREE_PACKET_FLAGS);
OCTREE_PACKET_SEQUENCE sequence = (*(OCTREE_PACKET_SEQUENCE*)dataAt);
dataAt += sizeof(OCTREE_PACKET_SEQUENCE);
OCTREE_PACKET_SENT_TIME timestamp = (*(OCTREE_PACKET_SENT_TIME*)dataAt);
dataAt += sizeof(OCTREE_PACKET_SENT_TIME);
qDebug() << "Sending separate stats packet at " << now << " [" << _totalPackets <<"]: sequence: " << sequence <<
" timestamp: " << timestamp <<
" size: " << statsMessageLength << " [" << _totalBytes <<
"] wasted bytes:" << thisWastedBytes << " [" << _totalWastedBytes << "]";
}
trueBytesSent += statsMessageLength;
truePacketsSent++;
packetsSent++;
OctreeServer::didCallWriteDatagram(this);
NodeList::getInstance()->writeDatagram((char*)nodeData->getPacket(), nodeData->getPacketLength(), _node);
packetSent = true;
thisWastedBytes = MAX_PACKET_SIZE - nodeData->getPacketLength();
_totalWastedBytes += thisWastedBytes;
_totalBytes += nodeData->getPacketLength();
_totalPackets++;
if (debug) {
const unsigned char* messageData = nodeData->getPacket();
int numBytesPacketHeader = numBytesForPacketHeader(reinterpret_cast<const char*>(messageData));
const unsigned char* dataAt = messageData + numBytesPacketHeader;
dataAt += sizeof(OCTREE_PACKET_FLAGS);
OCTREE_PACKET_SEQUENCE sequence = (*(OCTREE_PACKET_SEQUENCE*)dataAt);
dataAt += sizeof(OCTREE_PACKET_SEQUENCE);
OCTREE_PACKET_SENT_TIME timestamp = (*(OCTREE_PACKET_SENT_TIME*)dataAt);
dataAt += sizeof(OCTREE_PACKET_SENT_TIME);
qDebug() << "Sending packet at " << now << " [" << _totalPackets <<"]: sequence: " << sequence <<
" timestamp: " << timestamp <<
" size: " << nodeData->getPacketLength() << " [" << _totalBytes <<
"] wasted bytes:" << thisWastedBytes << " [" << _totalWastedBytes << "]";
}
}
nodeData->stats.markAsSent();
} else {
// If there's actually a packet waiting, then send it.
if (nodeData->isPacketWaiting() && !nodeData->isShuttingDown()) {
// just send the voxel packet
OctreeServer::didCallWriteDatagram(this);
NodeList::getInstance()->writeDatagram((char*)nodeData->getPacket(), nodeData->getPacketLength(), _node);
packetSent = true;
int thisWastedBytes = MAX_PACKET_SIZE - nodeData->getPacketLength();
_totalWastedBytes += thisWastedBytes;
_totalBytes += nodeData->getPacketLength();
_totalPackets++;
if (debug) {
const unsigned char* messageData = nodeData->getPacket();
int numBytesPacketHeader = numBytesForPacketHeader(reinterpret_cast<const char*>(messageData));
const unsigned char* dataAt = messageData + numBytesPacketHeader;
dataAt += sizeof(OCTREE_PACKET_FLAGS);
OCTREE_PACKET_SEQUENCE sequence = (*(OCTREE_PACKET_SEQUENCE*)dataAt);
dataAt += sizeof(OCTREE_PACKET_SEQUENCE);
OCTREE_PACKET_SENT_TIME timestamp = (*(OCTREE_PACKET_SENT_TIME*)dataAt);
dataAt += sizeof(OCTREE_PACKET_SENT_TIME);
qDebug() << "Sending packet at " << now << " [" << _totalPackets <<"]: sequence: " << sequence <<
" timestamp: " << timestamp <<
" size: " << nodeData->getPacketLength() << " [" << _totalBytes <<
"] wasted bytes:" << thisWastedBytes << " [" << _totalWastedBytes << "]";
}
}
}
// remember to track our stats
if (packetSent) {
nodeData->stats.packetSent(nodeData->getPacketLength());
trueBytesSent += nodeData->getPacketLength();
truePacketsSent++;
packetsSent++;
nodeData->octreePacketSent();
nodeData->resetOctreePacket();
}
return packetsSent;
}
/// Version of voxel distributor that sends the deepest LOD level at once
int OctreeSendThread::packetDistributor(OctreeQueryNode* nodeData, bool viewFrustumChanged) {
OctreeServer::didPacketDistributor(this);
// if shutting down, exit early
if (nodeData->isShuttingDown()) {
return 0;
}
// calculate max number of packets that can be sent during this interval
int clientMaxPacketsPerInterval = std::max(1, (nodeData->getMaxOctreePacketsPerSecond() / INTERVALS_PER_SECOND));
int maxPacketsPerInterval = std::min(clientMaxPacketsPerInterval, _myServer->getPacketsPerClientPerInterval());
int truePacketsSent = 0;
int trueBytesSent = 0;
int packetsSentThisInterval = 0;
bool isFullScene = ((!viewFrustumChanged || !nodeData->getWantDelta()) && nodeData->getViewFrustumJustStoppedChanging())
|| nodeData->hasLodChanged();
bool somethingToSend = true; // assume we have something
// FOR NOW... node tells us if it wants to receive only view frustum deltas
bool wantDelta = viewFrustumChanged && nodeData->getWantDelta();
// If our packet already has content in it, then we must use the color choice of the waiting packet.
// If we're starting a fresh packet, then...
// If we're moving, and the client asked for low res, then we force monochrome, otherwise, use
// the clients requested color state.
bool wantColor = nodeData->getWantColor();
bool wantCompression = nodeData->getWantCompression();
// If we have a packet waiting, and our desired want color, doesn't match the current waiting packets color
// then let's just send that waiting packet.
if (!nodeData->getCurrentPacketFormatMatches()) {
if (nodeData->isPacketWaiting()) {
packetsSentThisInterval += handlePacketSend(nodeData, trueBytesSent, truePacketsSent);
} else {
nodeData->resetOctreePacket();
}
int targetSize = MAX_OCTREE_PACKET_DATA_SIZE;
if (wantCompression) {
targetSize = nodeData->getAvailable() - sizeof(OCTREE_PACKET_INTERNAL_SECTION_SIZE);
}
_packetData.changeSettings(wantCompression, targetSize);
}
const ViewFrustum* lastViewFrustum = wantDelta ? &nodeData->getLastKnownViewFrustum() : NULL;
// If the current view frustum has changed OR we have nothing to send, then search against
// the current view frustum for things to send.
if (viewFrustumChanged || nodeData->nodeBag.isEmpty()) {
// if our view has changed, we need to reset these things...
if (viewFrustumChanged) {
if (nodeData->moveShouldDump() || nodeData->hasLodChanged()) {
nodeData->dumpOutOfView();
}
nodeData->map.erase();
}
if (!viewFrustumChanged && !nodeData->getWantDelta()) {
// only set our last sent time if we weren't resetting due to frustum change
quint64 now = usecTimestampNow();
nodeData->setLastTimeBagEmpty(now);
}
// track completed scenes and send out the stats packet accordingly
nodeData->stats.sceneCompleted();
nodeData->setLastRootTimestamp(_myServer->getOctree()->getRoot()->getLastChanged());
// TODO: add these to stats page
//::endSceneSleepTime = _usleepTime;
//unsigned long sleepTime = ::endSceneSleepTime - ::startSceneSleepTime;
//unsigned long encodeTime = nodeData->stats.getTotalEncodeTime();
//unsigned long elapsedTime = nodeData->stats.getElapsedTime();
int packetsJustSent = handlePacketSend(nodeData, trueBytesSent, truePacketsSent);
packetsSentThisInterval += packetsJustSent;
// If we're starting a full scene, then definitely we want to empty the nodeBag
if (isFullScene) {
nodeData->nodeBag.deleteAll();
}
// TODO: add these to stats page
//::startSceneSleepTime = _usleepTime;
// start tracking our stats
nodeData->stats.sceneStarted(isFullScene, viewFrustumChanged, _myServer->getOctree()->getRoot(), _myServer->getJurisdiction());
// This is the start of "resending" the scene.
bool dontRestartSceneOnMove = false; // this is experimental
if (dontRestartSceneOnMove) {
if (nodeData->nodeBag.isEmpty()) {
nodeData->nodeBag.insert(_myServer->getOctree()->getRoot()); // only in case of empty
}
} else {
nodeData->nodeBag.insert(_myServer->getOctree()->getRoot()); // original behavior, reset on move or empty
}
}
// If we have something in our nodeBag, then turn them into packets and send them out...
if (!nodeData->nodeBag.isEmpty()) {
int bytesWritten = 0;
quint64 start = usecTimestampNow();
// TODO: add these to stats page
//quint64 startCompressTimeMsecs = OctreePacketData::getCompressContentTime() / 1000;
//quint64 startCompressCalls = OctreePacketData::getCompressContentCalls();
int extraPackingAttempts = 0;
bool completedScene = false;
while (somethingToSend && packetsSentThisInterval < maxPacketsPerInterval && !nodeData->isShuttingDown()) {
float lockWaitElapsedUsec = OctreeServer::SKIP_TIME;
float encodeElapsedUsec = OctreeServer::SKIP_TIME;
float compressAndWriteElapsedUsec = OctreeServer::SKIP_TIME;
float packetSendingElapsedUsec = OctreeServer::SKIP_TIME;
quint64 startInside = usecTimestampNow();
bool lastNodeDidntFit = false; // assume each node fits
if (!nodeData->nodeBag.isEmpty()) {
OctreeElement* subTree = nodeData->nodeBag.extract();
/* TODO: Looking for a way to prevent locking and encoding a tree that is not
// going to result in any packets being sent...
//
// If our node is root, and the root hasn't changed, and our view hasn't changed,
// and we've already seen at least one duplicate packet, then we probably don't need
// to lock the tree and encode, because the result should be that no bytes will be
// encoded, and this will be a duplicate packet from the last one we sent...
OctreeElement* root = _myServer->getOctree()->getRoot();
bool skipEncode = false;
if (
(subTree == root)
&& (nodeData->getLastRootTimestamp() == root->getLastChanged())
&& !viewFrustumChanged
&& (nodeData->getDuplicatePacketCount() > 0)
) {
qDebug() << "is root, root not changed, view not changed, already seen a duplicate!"
<< "Can we skip it?";
skipEncode = true;
}
*/
bool wantOcclusionCulling = nodeData->getWantOcclusionCulling();
CoverageMap* coverageMap = wantOcclusionCulling ? &nodeData->map : IGNORE_COVERAGE_MAP;
float voxelSizeScale = nodeData->getOctreeSizeScale();
int boundaryLevelAdjustClient = nodeData->getBoundaryLevelAdjust();
int boundaryLevelAdjust = boundaryLevelAdjustClient + (viewFrustumChanged && nodeData->getWantLowResMoving()
? LOW_RES_MOVING_ADJUST : NO_BOUNDARY_ADJUST);
EncodeBitstreamParams params(INT_MAX, &nodeData->getCurrentViewFrustum(), wantColor,
WANT_EXISTS_BITS, DONT_CHOP, wantDelta, lastViewFrustum,
wantOcclusionCulling, coverageMap, boundaryLevelAdjust, voxelSizeScale,
nodeData->getLastTimeBagEmpty(),
isFullScene, &nodeData->stats, _myServer->getJurisdiction());
// TODO: should this include the lock time or not? This stat is sent down to the client,
// it seems like it may be a good idea to include the lock time as part of the encode time
// are reported to client. Since you can encode without the lock
nodeData->stats.encodeStarted();
quint64 lockWaitStart = usecTimestampNow();
_myServer->getOctree()->lockForRead();
quint64 lockWaitEnd = usecTimestampNow();
lockWaitElapsedUsec = (float)(lockWaitEnd - lockWaitStart);
quint64 encodeStart = usecTimestampNow();
bytesWritten = _myServer->getOctree()->encodeTreeBitstream(subTree, &_packetData, nodeData->nodeBag, params);
quint64 encodeEnd = usecTimestampNow();
encodeElapsedUsec = (float)(encodeEnd - encodeStart);
// If after calling encodeTreeBitstream() there are no nodes left to send, then we know we've
// sent the entire scene. We want to know this below so we'll actually write this content into
// the packet and send it
completedScene = nodeData->nodeBag.isEmpty();
// if we're trying to fill a full size packet, then we use this logic to determine if we have a DIDNT_FIT case.
if (_packetData.getTargetSize() == MAX_OCTREE_PACKET_DATA_SIZE) {
if (_packetData.hasContent() && bytesWritten == 0 &&
params.stopReason == EncodeBitstreamParams::DIDNT_FIT) {
lastNodeDidntFit = true;
}
} else {
// in compressed mode and we are trying to pack more... and we don't care if the _packetData has
// content or not... because in this case even if we were unable to pack any data, we want to drop
// below to our sendNow logic, but we do want to track that we attempted to pack extra
extraPackingAttempts++;
if (bytesWritten == 0 && params.stopReason == EncodeBitstreamParams::DIDNT_FIT) {
lastNodeDidntFit = true;
}
}
nodeData->stats.encodeStopped();
_myServer->getOctree()->unlock();
} else {
// If the bag was empty then we didn't even attempt to encode, and so we know the bytesWritten were 0
bytesWritten = 0;
somethingToSend = false; // this will cause us to drop out of the loop...
}
// If the last node didn't fit, but we're in compressed mode, then we actually want to see if we can fit a
// little bit more in this packet. To do this we write into the packet, but don't send it yet, we'll
// keep attempting to write in compressed mode to add more compressed segments
// We only consider sending anything if there is something in the _packetData to send... But
// if bytesWritten == 0 it means either the subTree couldn't fit or we had an empty bag... Both cases
// mean we should send the previous packet contents and reset it.
if (completedScene || lastNodeDidntFit) {
if (_packetData.hasContent()) {
quint64 compressAndWriteStart = usecTimestampNow();
// if for some reason the finalized size is greater than our available size, then probably the "compressed"
// form actually inflated beyond our padding, and in this case we will send the current packet, then
// write to out new packet...
unsigned int writtenSize = _packetData.getFinalizedSize()
+ (nodeData->getCurrentPacketIsCompressed() ? sizeof(OCTREE_PACKET_INTERNAL_SECTION_SIZE) : 0);
if (writtenSize > nodeData->getAvailable()) {
packetsSentThisInterval += handlePacketSend(nodeData, trueBytesSent, truePacketsSent);
}
nodeData->writeToPacket(_packetData.getFinalizedData(), _packetData.getFinalizedSize());
extraPackingAttempts = 0;
quint64 compressAndWriteEnd = usecTimestampNow();
compressAndWriteElapsedUsec = (float)(compressAndWriteEnd - compressAndWriteStart);
}
// If we're not running compressed, then we know we can just send now. Or if we're running compressed, but
// the packet doesn't have enough space to bother attempting to pack more...
bool sendNow = true;
if (nodeData->getCurrentPacketIsCompressed() &&
nodeData->getAvailable() >= MINIMUM_ATTEMPT_MORE_PACKING &&
extraPackingAttempts <= REASONABLE_NUMBER_OF_PACKING_ATTEMPTS) {
sendNow = false; // try to pack more
}
int targetSize = MAX_OCTREE_PACKET_DATA_SIZE;
if (sendNow) {
quint64 packetSendingStart = usecTimestampNow();
packetsSentThisInterval += handlePacketSend(nodeData, trueBytesSent, truePacketsSent);
quint64 packetSendingEnd = usecTimestampNow();
packetSendingElapsedUsec = (float)(packetSendingEnd - packetSendingStart);
if (wantCompression) {
targetSize = nodeData->getAvailable() - sizeof(OCTREE_PACKET_INTERNAL_SECTION_SIZE);
}
} else {
// If we're in compressed mode, then we want to see if we have room for more in this wire packet.
// but we've finalized the _packetData, so we want to start a new section, we will do that by
// resetting the packet settings with the max uncompressed size of our current available space
// in the wire packet. We also include room for our section header, and a little bit of padding
// to account for the fact that whenc compressing small amounts of data, we sometimes end up with
// a larger compressed size then uncompressed size
targetSize = nodeData->getAvailable() - sizeof(OCTREE_PACKET_INTERNAL_SECTION_SIZE) - COMPRESS_PADDING;
}
_packetData.changeSettings(nodeData->getWantCompression(), targetSize); // will do reset
}
OctreeServer::trackTreeWaitTime(lockWaitElapsedUsec);
OctreeServer::trackEncodeTime(encodeElapsedUsec);
OctreeServer::trackCompressAndWriteTime(compressAndWriteElapsedUsec);
OctreeServer::trackPacketSendingTime(packetSendingElapsedUsec);
quint64 endInside = usecTimestampNow();
quint64 elapsedInsideUsecs = endInside - startInside;
OctreeServer::trackInsideTime((float)elapsedInsideUsecs);
}
// Here's where we can/should allow the server to send other data...
// send the environment packet
// TODO: should we turn this into a while loop to better handle sending multiple special packets
if (_myServer->hasSpecialPacketToSend(_node) && !nodeData->isShuttingDown()) {
int specialPacketsSent;
trueBytesSent += _myServer->sendSpecialPacket(_node, nodeData, specialPacketsSent);
nodeData->resetOctreePacket(); // because nodeData's _sequenceNumber has changed
truePacketsSent += specialPacketsSent;
packetsSentThisInterval += specialPacketsSent;
}
// Re-send packets that were nacked by the client
while (nodeData->hasNextNackedPacket() && packetsSentThisInterval < maxPacketsPerInterval) {
const QByteArray* packet = nodeData->getNextNackedPacket();
if (packet) {
NodeList::getInstance()->writeDatagram(*packet, _node);
truePacketsSent++;
packetsSentThisInterval++;
_totalBytes += packet->size();
_totalPackets++;
_totalWastedBytes += MAX_PACKET_SIZE - packet->size();
}
}
quint64 end = usecTimestampNow();
int elapsedmsec = (end - start)/USECS_PER_MSEC;
OctreeServer::trackLoopTime(elapsedmsec);
// TODO: add these to stats page
//quint64 endCompressCalls = OctreePacketData::getCompressContentCalls();
//int elapsedCompressCalls = endCompressCalls - startCompressCalls;
//quint64 endCompressTimeMsecs = OctreePacketData::getCompressContentTime() / 1000;
//int elapsedCompressTimeMsecs = endCompressTimeMsecs - startCompressTimeMsecs;
// if after sending packets we've emptied our bag, then we want to remember that we've sent all
// the voxels from the current view frustum
if (nodeData->nodeBag.isEmpty()) {
nodeData->updateLastKnownViewFrustum();
nodeData->setViewSent(true);
nodeData->map.erase(); // It would be nice if we could save this, and only reset it when the view frustum changes
}
} // end if bag wasn't empty, and so we sent stuff...
return truePacketsSent;
}
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