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Jan Grewe 2018-08-31 18:20:47 +02:00
commit 5d3ed2294f
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48
DataService.pro Normal file
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#-------------------------------------------------
#
# Project created by QtCreator 2018-08-29T14:47:02
#
#-------------------------------------------------
QT += core gui charts
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = DataService
TEMPLATE = app
# The following define makes your compiler emit warnings if you use
# any feature of Qt which has been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
mainwindow.cpp \
dataservice.cpp \
dataqueue.cpp \
dataloader.cpp \
dataresult1d.cpp \
datarequest.cpp \
converttoseries.cpp
HEADERS += \
mainwindow.h \
dataservice.h \
dataqueue.h \
dataloader.h \
dataresult1d.h \
datarequest.h \
converttoseries.h
FORMS += \
mainwindow.ui
unix|win32: LIBS += -lnix

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26
converttoseries.cpp Normal file
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#include "converttoseries.h"
using namespace QtCharts;
ConvertToSeries::ConvertToSeries(QObject *parent) : QObject(parent)
{
}
void ConvertToSeries::run() {
mutex.lock();
if (dataPresent) {
for (size_t i = 0; i < data.xdata.size(); ++i) {
this->series->append(data.xdata[i], data.ydata[i]);
}
emit dataConverted(series, QString::fromStdString(data.entityId));
}
mutex.unlock();
}
void ConvertToSeries::setData(QLineSeries *series, const DataResult1D &data) {
mutex.lock();
this->series = series;
this->data = data;
this->dataPresent = true;
mutex.unlock();
}

33
converttoseries.h Normal file
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#ifndef CONVERTTOSERIES_H
#define CONVERTTOSERIES_H
#include <QObject>
#include <QRunnable>
#include <QMutex>
#include <QLineSeries>
#include "dataresult1d.h"
using namespace QtCharts;
class ConvertToSeries : public QObject, public QRunnable {
Q_OBJECT
public:
explicit ConvertToSeries(QObject *parent = nullptr);
private:
QMutex mutex;
bool dataPresent = false;
DataResult1D data;
QLineSeries *series;
void run() override;
public:
void setData(QLineSeries *series, const DataResult1D &data);
signals:
void dataConverted(QLineSeries *series, QString entityId);
};
#endif // CONVERTTOSERIES_H

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#include "dataloader.h"
#include <iostream>
DataLoader::DataLoader()
{
}
DataResult1D DataLoader::doLoad(const DataRequest &request) {
std::vector<double> x, y;
x = request.array.getDimension(1).asSampledDimension().axis(request.count[0], request.start[0]);
request.array.getData(y, request.count, request.start);
DataResult1D res(request.id, request.array.id(), x, y);
return res;
}

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#ifndef DATALOADER_H
#define DATALOADER_H
#include <QObject>
#include "datarequest.h"
#include "dataresult1d.h"
class DataLoader : public QObject
{
Q_OBJECT
public:
DataLoader();
public slots:
DataResult1D doLoad(const DataRequest &request);
};
#endif // DATALOADER_H

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#include "dataqueue.h"
DataQueue::DataQueue(QObject *parent) :
QThread(parent), stopped(false)
{}
DataQueue::~DataQueue(){
}
void DataQueue::run() {
mutex.lock();
bool stop = stopped || (requestQueue.size() == 0);
mutex.unlock();
while (!stop) {
mutex.lock();
if (requestQueue.size() > 0) {
DataResult1D data = loader->doLoad(requestQueue.front());
resultMap.insert(std::pair<std::string, DataResult1D>(data.id, data));
emit resultReady(QString::fromStdString(data.id));
requestQueue.pop();
stop = requestQueue.size() == 0 || stopped;
}
mutex.unlock();
}
}
void DataQueue::requestData(const nix::DataArray &array, const nix::NDSize &count, const nix::NDSize &offset, std::string &requestId) {
requestId = nix::util::createId();
DataRequest dr(requestId, array, count, offset);
mutex.lock();
requestQueue.push(dr);
mutex.unlock();
start();
}
void DataQueue::stop() {
mutex.lock();
stopped = true;
mutex.unlock();
}
DataResult1D DataQueue::getData(QString requestId) {
DataResult1D ret;
mutex.lock();
std::map<std::string, DataResult1D>::iterator it = resultMap.find(requestId.toStdString());
if (it != resultMap.end()) {
ret = it->second;
resultMap.erase(it);
}
mutex.unlock();
return ret;
}

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#ifndef DATAQUEUE_H
#define DATAQUEUE_H
#include <QObject>
#include <QThread>
#include <QMutex>
#include <QWaitCondition>
#include <queue>
#include <iostream>
#include <nix.hpp>
#include "dataloader.h"
#include "dataresult1d.h"
#include "datarequest.h"
class DataQueue : public QThread
{
Q_OBJECT
public:
DataQueue(QObject *parent = 0);
~DataQueue();
void run() override;
void stop();
DataResult1D getData(QString requestId);
signals:
void resultReady(QString requestId);
public slots:
void requestData(const nix::DataArray &array, const nix::NDSize &count, const nix::NDSize &offset, std::string &requestId);
private:
std::queue<DataRequest> requestQueue;
std::map<std::string, DataResult1D> resultMap;
QMutex mutex;
DataLoader *loader;
bool stopped;
};
#endif // DATAQUEUE_H

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#include "datarequest.h"
DataRequest::DataRequest(const std::string &requestId, const nix::DataArray &array, const nix::NDSize &count, const nix::NDSize &start)
: id(requestId), array(array), count(count), start(start)
{}

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#ifndef DATAREQUEST_H
#define DATAREQUEST_H
#include <nix.hpp>
class DataRequest
{
public:
DataRequest(const std::string &requestId, const nix::DataArray &array, const nix::NDSize &count, const nix::NDSize &start);
std::string id;
nix::DataArray array;
nix::NDSize count, start;
};
#endif // DATAREQUEST_H

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#include "dataresult1d.h"
DataResult1D::DataResult1D(const std::string &request_id, const std::string &entityId, const std::vector<double> &x, const std::vector<double> &y)
: id(request_id), entityId(entityId), xdata(x), ydata(y)
{}

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#ifndef DATARESULT1D_H
#define DATARESULT1D_H
#include <iostream>
#include <vector>
class DataResult1D
{
public:
DataResult1D(){};
DataResult1D(const std::string &request_id, const std::string &entityId, const std::vector<double> &x, const std::vector<double> &y);
std::string id, entityId;
std::vector<double> xdata;
std::vector<double> ydata;
};
#endif // DATARESULT1D_H

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#include "dataservice.h"
DataService::DataService(QObject *parent):
QObject(parent)
{}
void DataService::doWork( ) {
QString result;
size_t count = 0;
for (size_t i = 1; i < 100000000; ++i){
count++;
}
/* ... here is the expensive or blocking operation ... */
emit resultReady();
}

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#ifndef DATASERVICE_H
#define DATASERVICE_H
#include <QObject>
class DataService : public QObject
{
Q_OBJECT
public:
explicit DataService(QObject *parent = nullptr);
signals:
void resultReady();
public slots:
void doWork();
};
#endif // DATASERVICE_H

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#include "mainwindow.h"
#include <QApplication>
#include "dataresult1d.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}

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#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "converttoseries.h"
#include <iostream>
using namespace QtCharts;
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
/*
dataService = new DataService();
dataService->moveToThread(&dataServiceThread);
connect(&dataServiceThread, &QThread::finished, dataService, &QObject::deleteLater);
connect(ui->goBtn, SIGNAL(clicked(bool)), dataService, SLOT(doWork()));
connect(dataService, SIGNAL(resultReady()), this, SLOT(handleResult()));
dataServiceThread.start();
*/
connect(&dataQueue, SIGNAL(resultReady(QString)), this, SLOT(dataReady(QString)));
//connect(&dataQueue, SIGNAL(finished()), &dataQueue, SLOT(deleteLater()));
DataLoader *loader = new DataLoader();
loader->moveToThread(&dataQueue);
dataQueue.start();
connect(ui->requestDataBtn, SIGNAL(clicked(bool)), this, SLOT(requestData()));
file = nix::File::open("/home/grewe/zwischenlager/2017-08-17-af-invivo-1/2017-08-17-af-invivo-1.nix",
nix::FileMode::ReadOnly);
//file = nix::File::open("/Users/jan/zwischenlager/threading_test/event_queue/DataService/data/2017-08-17-af-invivo-1.nix",
// nix::FileMode::ReadOnly);
nix::Block b = file.getBlock(0);
this->voltage = b.getDataArray("V-1");
this->eod = b.getDataArray("EOD");
voltageChart = new QChart();
voltageChart->legend()->hide();
//voltageChart->createDefaultAxes();
eodChart = new QChart();
eodChart->legend()->hide();
//eodChart->createDefaultAxes();
chartMap.insert(std::pair<std::string, QChart*>(voltage.id(), voltageChart));
chartMap.insert(std::pair<std::string, QChart*>(eod.id(), eodChart));
voltageChart->setTitle(QString::fromStdString(this->voltage.name()));
eodChart->setTitle(QString::fromStdString(this->eod.name()));
QMargins margins = voltageChart->margins();
int marg1 = margins.left();
margins.setLeft(marg1 * 4);
eodChart->setMargins(margins);
voltageView = new QtCharts::QChartView(voltageChart);
eodView = new QtCharts::QChartView(eodChart);
voltageView->setRenderHint(QPainter::Antialiasing);
eodView->setRenderHint(QPainter::Antialiasing);
ui->vbox->addWidget(voltageView);
ui->vbox->addWidget(eodView);
}
MainWindow::~MainWindow() {
if (file) {
file.close();
}
//dataServiceThread.quit();
//dataServiceThread.wait();
dataQueue.stop();
dataQueue.quit();
dataQueue.wait();
delete ui;
}
void MainWindow::dataReady(QString requestId) {
DataResult1D data = dataQueue.getData(requestId);
if (data.id.empty()) {
return;
}
ConvertToSeries *task = new ConvertToSeries();
QLineSeries *series = new QLineSeries();
task->setData(series, data);
connect(task, SIGNAL(dataConverted(QLineSeries*,QString)), this, SLOT(dataConverted(QLineSeries*,QString)));
QThreadPool::globalInstance()->start(task);
}
void MainWindow::dataConverted(QLineSeries *series, QString entityId) {
QPen pen = series->pen();
pen.setWidth(1);
series->setPen(pen);
chartMap[entityId.toStdString()]->addSeries(series);
}
void MainWindow::requestData() {
if (voltage && eod) {
nix::NDSize count(1, 10000);
nix::NDSize start(1, 0);
std::string vId, eodId;
dataQueue.requestData(voltage, count, start, vId);
dataQueue.requestData(eod, count, start, eodId);
}
}

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#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
//#include <QThread>
#include <QtCharts>
#include <nix.hpp>
#include "dataservice.h"
#include "dataqueue.h"
#include "dataresult1d.h"
Q_DECLARE_METATYPE(DataResult1D)
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
public slots:
void requestData();
void dataReady(QString requestId);
void dataConverted(QLineSeries *series, QString entityId);
private:
Ui::MainWindow *ui;
//QThread dataServiceThread;
//DataService *dataService;
DataQueue dataQueue;
nix::DataArray voltage, eod;
nix::File file;
QtCharts::QChartView *voltageView;
QtCharts::QChartView *eodView;
QtCharts::QChart *voltageChart;
QtCharts::QChart *eodChart;
std::map<std::string, QtCharts::QChart*> chartMap;
};
#endif // MAINWINDOW_H

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<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>300</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<widget class="QWidget" name="centralWidget">
<layout class="QVBoxLayout" name="verticalLayout_2">
<item>
<layout class="QVBoxLayout" name="vbox">
<property name="rightMargin">
<number>2</number>
</property>
</layout>
</item>
<item>
<widget class="QPushButton" name="requestDataBtn">
<property name="text">
<string>request data</string>
</property>
</widget>
</item>
</layout>
</widget>
<widget class="QMenuBar" name="menuBar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>28</height>
</rect>
</property>
</widget>
<widget class="QToolBar" name="mainToolBar">
<attribute name="toolBarArea">
<enum>TopToolBarArea</enum>
</attribute>
<attribute name="toolBarBreak">
<bool>false</bool>
</attribute>
</widget>
<widget class="QStatusBar" name="statusBar"/>
</widget>
<layoutdefault spacing="6" margin="11"/>
<resources/>
<connections/>
</ui>