work on debugging stutter behavior, mostly debugging and cleanup

This commit is contained in:
ZappoMan 2013-11-03 19:06:06 -08:00
parent 0fe09aa327
commit c18de72dd4
5 changed files with 236 additions and 68 deletions

View file

@ -144,6 +144,8 @@ Application::Application(int& argc, char** argv, timeval &startup_time) :
_packetsPerSecond(0),
_bytesPerSecond(0),
_bytesCount(0),
_recentMaxPackets(0),
_resetRecentMaxPacketsSoon(true),
_swatch(NULL),
_pasteMode(false)
{
@ -1314,22 +1316,30 @@ void Application::idle() {
double timeSinceLastUpdate = diffclock(&_lastTimeUpdated, &check);
if (timeSinceLastUpdate > IDLE_SIMULATE_MSECS) {
const float BIGGEST_DELTA_TIME_SECS = 0.25f;
update(glm::clamp((float)timeSinceLastUpdate / 1000.f, 0.f, BIGGEST_DELTA_TIME_SECS));
_glWidget->updateGL();
_lastTimeUpdated = check;
_idleLoopStdev.addValue(timeSinceLastUpdate);
// Record standard deviation and reset counter if needed
const int STDEV_SAMPLES = 500;
if (_idleLoopStdev.getSamples() > STDEV_SAMPLES) {
_idleLoopMeasuredJitter = _idleLoopStdev.getStDev();
_idleLoopStdev.reset();
{
PerformanceWarning warn(showWarnings, "Application::idle()... update()");
const float BIGGEST_DELTA_TIME_SECS = 0.25f;
update(glm::clamp((float)timeSinceLastUpdate / 1000.f, 0.f, BIGGEST_DELTA_TIME_SECS));
}
{
PerformanceWarning warn(showWarnings, "Application::idle()... updateGL()");
_glWidget->updateGL();
}
{
PerformanceWarning warn(showWarnings, "Application::idle()... rest of it");
_lastTimeUpdated = check;
_idleLoopStdev.addValue(timeSinceLastUpdate);
// Record standard deviation and reset counter if needed
const int STDEV_SAMPLES = 500;
if (_idleLoopStdev.getSamples() > STDEV_SAMPLES) {
_idleLoopMeasuredJitter = _idleLoopStdev.getStDev();
_idleLoopStdev.reset();
}
// After finishing all of the above work, restart the idle timer, allowing 2ms to process events.
idleTimer->start(2);
// After finishing all of the above work, restart the idle timer, allowing 2ms to process events.
idleTimer->start(2);
}
}
}
void Application::terminate() {
@ -1776,6 +1786,8 @@ static QUuid DEFAULT_NODE_ID_REF;
void Application::updateLookatTargetAvatar(const glm::vec3& mouseRayOrigin, const glm::vec3& mouseRayDirection,
glm::vec3& eyePosition) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateLookatTargetAvatar()");
_lookatTargetAvatar = findLookatTargetAvatar(mouseRayOrigin, mouseRayDirection, eyePosition, DEFAULT_NODE_ID_REF);
}
@ -1907,17 +1919,13 @@ void Application::updateAvatars(float deltaTime, glm::vec3 mouseRayOrigin, glm::
}
}
void Application::update(float deltaTime) {
void Application::updateMouseRay(float deltaTime, glm::vec3& mouseRayOrigin, glm::vec3& mouseRayDirection) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::update()");
// tell my avatar if the mouse is being pressed...
_myAvatar.setMousePressed(_mousePressed);
// check what's under the mouse and update the mouse voxel
glm::vec3 mouseRayOrigin, mouseRayDirection;
_viewFrustum.computePickRay(_mouseX / (float)_glWidget->width(),
_mouseY / (float)_glWidget->height(), mouseRayOrigin, mouseRayDirection);
PerformanceWarning warn(showWarnings, "Application::updateMouseRay()");
_viewFrustum.computePickRay(_mouseX / (float)_glWidget->width(), _mouseY / (float)_glWidget->height(),
mouseRayOrigin, mouseRayDirection);
// adjust for mirroring
if (_myCamera.getMode() == CAMERA_MODE_MIRROR) {
@ -1928,12 +1936,19 @@ void Application::update(float deltaTime) {
_viewFrustum.getRight() * glm::dot(_viewFrustum.getRight(), mouseRayDirection));
}
// tell my avatar if the mouse is being pressed...
_myAvatar.setMousePressed(_mousePressed);
// tell my avatar the posiion and direction of the ray projected ino the world based on the mouse position
_myAvatar.setMouseRay(mouseRayOrigin, mouseRayDirection);
// Set where I am looking based on my mouse ray (so that other people can see)
glm::vec3 lookAtSpot;
}
void Application::updateFaceshift(float deltaTime, glm::vec3& mouseRayOrigin, glm::vec3& mouseRayDirection,
glm::vec3& lookAtRayOrigin, glm::vec3& lookAtRayDirection) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateFaceshift()");
// Update faceshift
_faceshift.update();
@ -1943,14 +1958,19 @@ void Application::update(float deltaTime) {
}
// if we have faceshift, use that to compute the lookat direction
glm::vec3 lookAtRayOrigin = mouseRayOrigin, lookAtRayDirection = mouseRayDirection;
if (_faceshift.isActive()) {
lookAtRayOrigin = _myAvatar.getHead().calculateAverageEyePosition();
lookAtRayDirection = _myAvatar.getHead().getOrientation() * glm::quat(glm::radians(glm::vec3(
_faceshift.getEstimatedEyePitch(), _faceshift.getEstimatedEyeYaw(), 0.0f))) * glm::vec3(0.0f, 0.0f, -1.0f);
}
}
updateLookatTargetAvatar(mouseRayOrigin, mouseRayDirection, lookAtSpot);
void Application::updateMyAvatarLookAtPosition(glm::vec3& lookAtSpot, glm::vec3& lookAtRayOrigin,
glm::vec3& lookAtRayDirection) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateMyAvatarLookAtPosition()");
if (_lookatTargetAvatar && !_faceshift.isActive()) {
// If the mouse is over another avatar's head...
_myAvatar.getHead().setLookAtPosition(lookAtSpot);
@ -1969,11 +1989,14 @@ void Application::update(float deltaTime) {
lookAtSpot = lookAtRayOrigin + lookAtRayDirection * FAR_AWAY_STARE;
_myAvatar.getHead().setLookAtPosition(lookAtSpot);
}
}
// Find the voxel we are hovering over, and respond if clicked
float distance;
BoxFace face;
void Application::updateHoverVoxels(float deltaTime, glm::vec3& mouseRayOrigin, glm::vec3& mouseRayDirection,
float& distance, BoxFace& face) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateHoverVoxels()");
// If we have clicked on a voxel, update it's color
if (_isHoverVoxelSounding) {
VoxelNode* hoveredNode = _voxels.getVoxelAt(_hoverVoxel.x, _hoverVoxel.y, _hoverVoxel.z, _hoverVoxel.s);
@ -2005,13 +2028,19 @@ void Application::update(float deltaTime) {
_isHoverVoxelSounding = true;
}
}
}
void Application::updateMouseVoxels(float deltaTime, glm::vec3& mouseRayOrigin, glm::vec3& mouseRayDirection,
float& distance, BoxFace& face) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateMouseVoxels()");
_mouseVoxel.s = 0.0f;
if (Menu::getInstance()->isVoxelModeActionChecked() &&
(fabs(_myAvatar.getVelocity().x) +
fabs(_myAvatar.getVelocity().y) +
fabs(_myAvatar.getVelocity().z)) / 3 < MAX_AVATAR_EDIT_VELOCITY) {
PerformanceWarning warn(showWarnings, "Application::update()... findRayIntersection()");
if (_voxels.findRayIntersection(mouseRayOrigin, mouseRayDirection, _mouseVoxel, distance, face)) {
if (distance < MAX_VOXEL_EDIT_DISTANCE) {
@ -2080,12 +2109,17 @@ void Application::update(float deltaTime) {
_justEditedVoxel = false;
}
}
}
void Application::updateHandAndTouch(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateHandAndTouch()");
// walking triggers the handControl to stop
if (_myAvatar.getMode() == AVATAR_MODE_WALKING) {
_handControl.stop();
}
// Update from Touch
if (_isTouchPressed) {
float TOUCH_YAW_SCALE = -0.25f;
@ -2096,19 +2130,29 @@ void Application::update(float deltaTime) {
_lastTouchAvgX = _touchAvgX;
_lastTouchAvgY = _touchAvgY;
}
// Leap finger-sensing device
}
void Application::updateLeap(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateLeap()");
LeapManager::enableFakeFingers(Menu::getInstance()->isOptionChecked(MenuOption::SimulateLeapHand));
_myAvatar.getHand().setRaveGloveActive(Menu::getInstance()->isOptionChecked(MenuOption::TestRaveGlove));
LeapManager::nextFrame(_myAvatar);
// Read serial port interface devices
}
void Application::updateSerialDevices(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateSerialDevices()");
if (_serialHeadSensor.isActive()) {
_serialHeadSensor.readData(deltaTime);
}
// Sample hardware, update view frustum if needed, and send avatar data to mixer/nodes
updateAvatar(deltaTime);
}
void Application::updateThreads(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateThreads()");
// read incoming packets from network
if (!_enableNetworkThread) {
@ -2120,12 +2164,12 @@ void Application::update(float deltaTime) {
_voxelProcessor.threadRoutine();
_voxelEditSender.threadRoutine();
}
}
void Application::updateMyAvatarSimulation(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateMyAvatarSimulation()");
//loop through all the other avatars and simulate them...
updateAvatars(deltaTime, mouseRayOrigin, mouseRayDirection);
// Simulate myself
if (Menu::getInstance()->isOptionChecked(MenuOption::Gravity)) {
_myAvatar.setGravity(_environment.getGravity(_myAvatar.getPosition()));
}
@ -2138,12 +2182,21 @@ void Application::update(float deltaTime) {
} else {
_myAvatar.simulate(deltaTime, NULL);
}
// Simulate particle cloud movements
}
void Application::updateParticles(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateParticles()");
if (Menu::getInstance()->isOptionChecked(MenuOption::ParticleCloud)) {
_cloud.simulate(deltaTime);
}
}
void Application::updateTransmitter(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateTransmitter()");
// no transmitter drive implies transmitter pick
if (!Menu::getInstance()->isOptionChecked(MenuOption::TransmitterDrive) && _myTransmitter.isConnected()) {
_transmitterPickStart = _myAvatar.getSkeleton().joint[AVATAR_JOINT_CHEST].position;
@ -2178,7 +2231,12 @@ void Application::update(float deltaTime) {
} else {
_transmitterPickStart = _transmitterPickEnd = glm::vec3();
}
}
void Application::updateCamera(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateCamera()");
if (!OculusManager::isConnected()) {
if (Menu::getInstance()->isOptionChecked(MenuOption::FullscreenMirror)) {
if (_myCamera.getMode() != CAMERA_MODE_MIRROR) {
@ -2213,7 +2271,12 @@ void Application::update(float deltaTime) {
}
}
}
}
void Application::updateDialogs(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateDialogs()");
// Update bandwidth dialog, if any
BandwidthDialog* bandwidthDialog = Menu::getInstance()->getBandwidthDialog();
if (bandwidthDialog) {
@ -2224,6 +2287,11 @@ void Application::update(float deltaTime) {
if (voxelStatsDialog) {
voxelStatsDialog->update();
}
}
void Application::updateAudio(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateAudio()");
// Update audio stats for procedural sounds
#ifndef _WIN32
@ -2231,7 +2299,12 @@ void Application::update(float deltaTime) {
_audio.setLastVelocity(_myAvatar.getVelocity());
_audio.eventuallyAnalyzePing();
#endif
}
void Application::updateCursor(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateCursor()");
// watch mouse position, if it hasn't moved, hide the cursor
bool underMouse = _glWidget->underMouse();
if (!_mouseHidden) {
@ -2252,6 +2325,43 @@ void Application::update(float deltaTime) {
}
}
void Application::update(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::update()");
// check what's under the mouse and update the mouse voxel
glm::vec3 mouseRayOrigin, mouseRayDirection;
updateMouseRay(deltaTime, mouseRayOrigin, mouseRayDirection);
// Set where I am looking based on my mouse ray (so that other people can see)
glm::vec3 lookAtSpot;
glm::vec3 lookAtRayOrigin = mouseRayOrigin, lookAtRayDirection = mouseRayDirection;
updateFaceshift(deltaTime, mouseRayOrigin, mouseRayDirection, lookAtRayOrigin, lookAtRayDirection);
updateLookatTargetAvatar(mouseRayOrigin, mouseRayDirection, lookAtSpot);
updateMyAvatarLookAtPosition(lookAtSpot, lookAtRayOrigin, lookAtRayDirection);
// Find the voxel we are hovering over, and respond if clicked
float distance;
BoxFace face;
updateHoverVoxels(deltaTime, mouseRayOrigin, mouseRayDirection, distance, face); // clicking on voxels and making sounds
updateMouseVoxels(deltaTime, mouseRayOrigin, mouseRayDirection, distance, face); // UI/UX related to voxels
updateHandAndTouch(deltaTime); // Update state for touch sensors
updateLeap(deltaTime); // Leap finger-sensing device
updateSerialDevices(deltaTime); // Read serial port interface devices
updateAvatar(deltaTime); // Sample hardware, update view frustum if needed, and send avatar data to mixer/nodes
updateThreads(deltaTime); // If running non-threaded, then give the threads some time to process...
updateAvatars(deltaTime, mouseRayOrigin, mouseRayDirection); //loop through all the other avatars and simulate them...
updateMyAvatarSimulation(deltaTime); // Simulate myself
updateParticles(deltaTime); // Simulate particle cloud movements
updateTransmitter(deltaTime); // transmitter drive or pick
updateCamera(deltaTime); // handle various camera tweaks like off axis projection
updateDialogs(deltaTime); // update various stats dialogs if present
updateAudio(deltaTime); // Update audio stats for procedural sounds
updateCursor(deltaTime); // Handle cursor updates
}
void Application::updateAvatar(float deltaTime) {
bool showWarnings = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showWarnings, "Application::updateAvatar()");
@ -3258,6 +3368,8 @@ void Application::displayStats() {
drawtext(10, statsVerticalOffset, 0.10f, 0, 1.0, 0, avatarStats);
QLocale locale(QLocale::English);
std::stringstream voxelStats;
voxelStats.precision(4);
voxelStats << "Voxels " <<
@ -3280,11 +3392,19 @@ void Application::displayStats() {
statsVerticalOffset += PELS_PER_LINE;
drawtext(10, statsVerticalOffset, 0.10f, 0, 1.0, 0, (char*)voxelStats.str().c_str());
unsigned long localTotal = VoxelNode::getNodeCount();
unsigned long localInternal = VoxelNode::getInternalNodeCount();
unsigned long localLeaves = VoxelNode::getLeafNodeCount();
QString localTotalString = locale.toString((uint)localTotal); // consider adding: .rightJustified(10, ' ');
QString localInternalString = locale.toString((uint)localInternal);
QString localLeavesString = locale.toString((uint)localLeaves);
voxelStats.str("");
voxelStats <<
"Local Voxels Total: " << VoxelNode::getNodeCount() << ", " <<
"Internal: " << VoxelNode::getInternalNodeCount() << " , " <<
"Leaves: " << VoxelNode::getLeafNodeCount() << "";
"Local Voxels Total: " << localTotalString.toLocal8Bit().constData() << " / " <<
"Internal: " << localInternalString.toLocal8Bit().constData() << " / " <<
"Leaves: " << localLeavesString.toLocal8Bit().constData() << "";
statsVerticalOffset += PELS_PER_LINE;
drawtext(10, statsVerticalOffset, 0.10f, 0, 1.0, 0, (char*)voxelStats.str().c_str());
@ -3311,6 +3431,29 @@ void Application::displayStats() {
voxelStats << "Sending Mode: " << voxelDetails;
statsVerticalOffset += PELS_PER_LINE;
drawtext(10, statsVerticalOffset, 0.10f, 0, 1.0, 0, (char*)voxelStats.str().c_str());
voxelStats.str("");
int voxelPacketsToProcess = _voxelProcessor.packetsToProcessCount();
QString packetsString = locale.toString((int)voxelPacketsToProcess);
QString maxString = locale.toString((int)_recentMaxPackets);
voxelStats << "Voxel Packets to Process: " << packetsString.toLocal8Bit().constData()
<< " [Recent Max: " << maxString.toLocal8Bit().constData() << "]";
if (_resetRecentMaxPacketsSoon && voxelPacketsToProcess > 0) {
_recentMaxPackets = 0;
_resetRecentMaxPacketsSoon = false;
}
if (voxelPacketsToProcess == 0) {
_resetRecentMaxPacketsSoon = true;
} else {
if (voxelPacketsToProcess > _recentMaxPackets) {
_recentMaxPackets = voxelPacketsToProcess;
}
}
statsVerticalOffset += PELS_PER_LINE;
drawtext(10, statsVerticalOffset, 0.10f, 0, 1.0, 0, (char*)voxelStats.str().c_str());
Node *avatarMixer = NodeList::getInstance()->soloNodeOfType(NODE_TYPE_AVATAR_MIXER);
char avatarMixerStats[200];

View file

@ -223,9 +223,30 @@ private:
void init();
void update(float deltaTime);
// Various helper functions called during update()
void updateMouseRay(float deltaTime, glm::vec3& mouseRayOrigin, glm::vec3& mouseRayDirection);
void updateFaceshift(float deltaTime, glm::vec3& mouseRayOrigin, glm::vec3& mouseRayDirection,
glm::vec3& lookAtRayOrigin, glm::vec3& lookAtRayDirection);
void updateMyAvatarLookAtPosition(glm::vec3& lookAtSpot, glm::vec3& lookAtRayOrigin, glm::vec3& lookAtRayDirection);
void updateHoverVoxels(float deltaTime, glm::vec3& mouseRayOrigin, glm::vec3& mouseRayDirection,
float& distance, BoxFace& face);
void updateMouseVoxels(float deltaTime, glm::vec3& mouseRayOrigin, glm::vec3& mouseRayDirection,
float& distance, BoxFace& face);
void updateLookatTargetAvatar(const glm::vec3& mouseRayOrigin, const glm::vec3& mouseRayDirection,
glm::vec3& eyePosition);
void updateHandAndTouch(float deltaTime);
void updateLeap(float deltaTime);
void updateSerialDevices(float deltaTime);
void updateThreads(float deltaTime);
void updateMyAvatarSimulation(float deltaTime);
void updateParticles(float deltaTime);
void updateTransmitter(float deltaTime);
void updateCamera(float deltaTime);
void updateDialogs(float deltaTime);
void updateAudio(float deltaTime);
void updateCursor(float deltaTime);
Avatar* findLookatTargetAvatar(const glm::vec3& mouseRayOrigin, const glm::vec3& mouseRayDirection,
glm::vec3& eyePosition, QUuid &nodeUUID);
bool isLookingAtMyAvatar(Avatar* avatar);
@ -407,6 +428,9 @@ private:
int _bytesPerSecond;
int _bytesCount;
int _recentMaxPackets; // recent max incoming voxel packets to process
bool _resetRecentMaxPacketsSoon;
StDev _idleLoopStdev;
float _idleLoopMeasuredJitter;

View file

@ -19,7 +19,7 @@ void VoxelPacketProcessor::processPacket(sockaddr& senderAddress, unsigned char*
"VoxelPacketProcessor::processPacket()");
const int WAY_BEHIND = 300;
if (packetsToProcessCount() > WAY_BEHIND && Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings)) {
if (packetsToProcessCount() > WAY_BEHIND && Menu::getInstance()->isOptionChecked(MenuOption::ExtraDebugging)) {
qDebug("VoxelPacketProcessor::processPacket() packets to process=%d\n", packetsToProcessCount());
}
ssize_t messageLength = packetLength;

View file

@ -1882,7 +1882,7 @@ void VoxelSystem::hideOutOfView(bool forceFullFrustum) {
_inhideOutOfView = true;
bool showDebugDetails = Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings);
PerformanceWarning warn(showDebugDetails, "hideOutOfView()", showDebugDetails);
PerformanceWarning warn(showDebugDetails, "hideOutOfView()");
bool widenFrustum = true;
// When using "delta" view frustums and only hide/show items that are in the difference
@ -1927,7 +1927,8 @@ void VoxelSystem::hideOutOfView(bool forceFullFrustum) {
setupNewVoxelsForDrawingSingleNode(DONT_BAIL_EARLY);
}
if (showDebugDetails) {
bool extraDebugDetails = Menu::getInstance()->isOptionChecked(MenuOption::ExtraDebugging);
if (extraDebugDetails) {
qDebug("hideOutOfView() scanned=%ld removed=%ld inside=%ld intersect=%ld outside=%ld\n",
args.nodesScanned, args.nodesRemoved, args.nodesInside,
args.nodesIntersect, args.nodesOutside

View file

@ -24,6 +24,12 @@ public:
/// \param ssize_t packetLength size of received data
/// \thread network receive thread
void queueReceivedPacket(sockaddr& senderAddress, unsigned char* packetData, ssize_t packetLength);
/// Are there received packets waiting to be processed
bool hasPacketsToProcess() const { return _packets.size() > 0; }
/// How many received packets waiting are to be processed
int packetsToProcessCount() const { return _packets.size(); }
protected:
/// Callback for processing of recieved packets. Implement this to process the incoming packets.
@ -36,12 +42,6 @@ protected:
/// Implements generic processing behavior for this thread.
virtual bool process();
/// Are there received packets waiting to be processed
bool hasPacketsToProcess() const { return _packets.size() > 0; }
/// How many received packets waiting are to be processed
int packetsToProcessCount() const { return _packets.size(); }
private:
std::vector<NetworkPacket> _packets;