fortunethread.cpp Example File

blockingfortuneclient/fortunethread.cpp
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#include <QtNetwork> #include "fortunethread.h" FortuneThread::FortuneThread(QObject *parent) : QThread(parent), quit(false) { } FortuneThread::~FortuneThread() { mutex.lock(); quit = true; cond.wakeOne(); mutex.unlock(); wait(); } void FortuneThread::requestNewFortune(const QString &hostName, quint16 port) { QMutexLocker locker(&mutex); this->hostName = hostName; this->port = port; if (!isRunning()) start(); else cond.wakeOne(); } void FortuneThread::run() { mutex.lock(); QString serverName = hostName; quint16 serverPort = port; mutex.unlock(); while (!quit) { const int Timeout = 5 * 1000; QTcpSocket socket; socket.connectToHost(serverName, serverPort); if (!socket.waitForConnected(Timeout)) { emit error(socket.error(), socket.errorString()); return; } QDataStream in(&socket); in.setVersion(QDataStream::Qt_4_0); QString fortune; do { if (!socket.waitForReadyRead(Timeout)) { emit error(socket.error(), socket.errorString()); return; } in.startTransaction(); in >> fortune; } while (!in.commitTransaction()); mutex.lock(); emit newFortune(fortune); cond.wait(&mutex); serverName = hostName; serverPort = port; mutex.unlock(); } }