QT跨线程的信号与槽[2]---后台SOCKET

来源：互联网发布：怎么做图书marc数据编辑：程序博客网时间：2024/05/01 06:48

继上一篇文章

大体实现了一个与UI线程分离的SOCKET封装类

即后台线程负责收发数据包，有数据到来则通知UI线程

UI线程发送数据时通知后台线程（异步）

嗯，大概是这个意思

#pragma once#include <QTcpSocket>#include <QByteArray>#include "XBackgroundWorker.h"class CXAsyncSocket : public CXBackgroundWorker{Q_OBJECTpublic:explicit CXAsyncSocket(void);virtual ~CXAsyncSocket(void);private:QTcpSocket *m_TcpSocket;private slots:void Construct_Invokee();void Destruct_Invokee();void Connect_Invokee(char *host, quint16 port);void DisConnect_Invokee();void Send_Invokee(QByteArray buffer);public:static void RegisterMetaTypes();// 下面三个函数用于前台线程void Connect(char *host, quint16 port);void DisConnect();void Send(QByteArray buffer);private slots:// 执行环境为后台线程void OnReceive();protected:// 执行环境为后台线程virtual void OnReceiveBuffer(QByteArray &buffer) = 0;signals:void OnConnect();void OnDisConnect();void OnException(QAbstractSocket::SocketError);};

#include "XAsyncSocket.h"CXAsyncSocket::CXAsyncSocket(){m_TcpSocket = NULL;QMetaObject::invokeMethod(this, "Construct_Invokee", Qt::BlockingQueuedConnection);Q_ASSERT(m_TcpSocket != NULL);}CXAsyncSocket::~CXAsyncSocket(void){Q_ASSERT(m_TcpSocket != NULL);QMetaObject::invokeMethod(this, "Destruct_Invokee", Qt::BlockingQueuedConnection);Q_ASSERT(m_TcpSocket == NULL);}void CXAsyncSocket::RegisterMetaTypes(){qRegisterMetaType<char*>("char*");qRegisterMetaType<QAbstractSocket::SocketError>("QAbstractSocket::SocketError");}void CXAsyncSocket::Construct_Invokee(){m_TcpSocket = new QTcpSocket;connect(m_TcpSocket, SIGNAL(connected()), this, SIGNAL(OnConnect()), Qt::QueuedConnection);connect(m_TcpSocket, SIGNAL(disconnected()), this, SIGNAL(OnDisConnect()), Qt::QueuedConnection);connect(m_TcpSocket, SIGNAL(error(QAbstractSocket::SocketError)), this, SIGNAL(OnException(QAbstractSocket::SocketError)), Qt::QueuedConnection);connect(m_TcpSocket, SIGNAL(readyRead()), this, SLOT(OnReceive()), Qt::QueuedConnection);}void CXAsyncSocket::Destruct_Invokee(){m_TcpSocket->disconnect();m_TcpSocket->abort();delete m_TcpSocket;m_TcpSocket = NULL;}void CXAsyncSocket::Connect_Invokee(char *host, quint16 port){m_TcpSocket->connectToHost(host, port);}void CXAsyncSocket::Connect(char *host, quint16 port){QMetaObject::invokeMethod(this, "Connect_Invokee", Qt::QueuedConnection, Q_ARG(char*, host), Q_ARG(quint16, port));}void CXAsyncSocket::DisConnect_Invokee(){m_TcpSocket->abort();}void CXAsyncSocket::DisConnect(){QMetaObject::invokeMethod(this, "DisConnect_Invokee", Qt::QueuedConnection);}void CXAsyncSocket::Send_Invokee(QByteArray buffer){m_TcpSocket->write(buffer);}void CXAsyncSocket::Send(QByteArray buffer){QMetaObject::invokeMethod(this, "Send_Invokee", Qt::QueuedConnection, Q_ARG(QByteArray, buffer));}void CXAsyncSocket::OnReceive(){OnReceiveBuffer(m_TcpSocket->readAll());}

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