用qt写一段代码实现创建两个独立的线程或进程,一个用于从socket接收特征值数据,另一个用于从socket接收实时波形数据
时间: 2023-08-13 18:03:03 浏览: 109
以下是一个使用 Qt 的多线程和网络模块实现创建两个独立线程的示例代码:
```cpp
#include <QtWidgets>
#include <QtNetwork>
class FeatureThread : public QThread {
Q_OBJECT
public:
explicit FeatureThread(QObject* parent = nullptr) : QThread(parent) {}
signals:
void featureDataReceived(QByteArray data);
protected:
void run() override {
QTcpSocket socket;
socket.connectToHost("localhost", 1234);
if (!socket.waitForConnected()) {
emit finished();
return;
}
while (!isInterruptionRequested()) {
if (socket.waitForReadyRead()) {
QByteArray data = socket.readAll();
emit featureDataReceived(data);
}
}
socket.disconnectFromHost();
}
};
class WaveformThread : public QThread {
Q_OBJECT
public:
explicit WaveformThread(QObject* parent = nullptr) : QThread(parent) {}
signals:
void waveformDataReceived(QByteArray data);
protected:
void run() override {
QTcpSocket socket;
socket.connectToHost("localhost", 5678);
if (!socket.waitForConnected()) {
emit finished();
return;
}
while (!isInterruptionRequested()) {
if (socket.waitForReadyRead()) {
QByteArray data = socket.readAll();
emit waveformDataReceived(data);
}
}
socket.disconnectFromHost();
}
};
class MainWindow : public QMainWindow {
Q_OBJECT
public:
explicit MainWindow(QWidget* parent = nullptr) : QMainWindow(parent) {
connect(&featureThread, &FeatureThread::featureDataReceived, this, &MainWindow::onFeatureDataReceived);
connect(&waveformThread, &WaveformThread::waveformDataReceived, this, &MainWindow::onWaveformDataReceived);
featureThread.start();
waveformThread.start();
}
~MainWindow() override {
featureThread.requestInterruption();
featureThread.wait();
waveformThread.requestInterruption();
waveformThread.wait();
}
private slots:
void onFeatureDataReceived(QByteArray data) {
// 处理特征值数据
}
void onWaveformDataReceived(QByteArray data) {
// 处理实时波形数据
}
private:
FeatureThread featureThread;
WaveformThread waveformThread;
};
```
在这个示例中,我们分别创建了 `FeatureThread` 和 `WaveformThread` 两个线程,并分别用于从 `localhost:1234` 和 `localhost:5678` 接收数据。当每个线程收到数据时,它们会分别发出 `featureDataReceived` 和 `waveformDataReceived` 信号,并在主窗口的 `onFeatureDataReceived` 和 `onWaveformDataReceived` 槽中处理数据。
在主窗口的构造函数中,我们将 `featureThread` 和 `waveformThread` 启动,并在析构函数中通过调用 `requestInterruption` 和 `wait` 等待线程退出。
请注意,在实际使用中,您需要根据实际情况更改线程的实现以及使用的网络协议和端口号。
阅读全文