QT Threading (2) using Workobject in Qthread

• Workthread, which generally inherits Qthread, creates a temporary workobject in the overloaded run (), which determines whether the workobject is used in the thread
• So what if this workobject is a singleton?

Method 2: Use Workobject in Qthread

1. Create Workobject

1#include <QObject>2#include <QDebug>3#include <QThread>4 5 #defineDEBUG (x)6 {7Qdebug () <<"class Name:"<<x->metaobject ()->classname () <<"\ n"8<<"function:"<<__func__<<"\ n" 9<<"Thread id ="<<Qthread::currentthreadid ()Ten<<"\ n--------------------------------------------------";  One } A  - classWorkobject: PublicQobject - { the Q_object - q_disable_copy (workobject) -  -  Public: +     StaticWorkobject *getinstance () -     { +           StaticWorkobject instance; A           return&instance; at     } -  -     voidStart () {DEBUG ( This);} -  - Private: -  in     ExplicitWorkobject (Qobject *parent =0) - : Qobject (parent) to     {} +};

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2. Create Workthread

1#include <QThread>2 3#include"workobject.h"4 5 classWorkthread: PublicQthread6 {7  Public:8Workthread (Qobject *parent =0)9 : Qthread (parent)Ten     {} One  A protected: -     voidRun () -     { theDEBUG ( This); -Workobject *pwork =workobject::getinstance (); -Pwork->start (); -     } +};

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3. Create Managerobject

1#include <QObject>2 3#include"workobject.h"4#include"workthread.h"5 6 classManagerobject: PublicQobject7 {8 Q_object9  Public:Ten     ExplicitManagerobject (Qobject *parent =0) One : Qobject (parent) A     {} -  -     voidStart () the     { -DEBUG ( This); -Workobject *pobj =workobject::getinstance (); -Pobj->start (); +     } -  +     voidThreadRun () A     { atDEBUG ( This); -Workthread *pthread =NewWorkthread; -Pthread->start (); -     } -};

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4.main.cpp

1#include <QCoreApplication>2#include <QDebug>3 4#include"managerobject.h"5#include"workthread.h"6 7 8 intMainintargcChar*argv[])9 {Ten qcoreapplication A (argc, argv); One  AQdebug () <<"main thread id ="<<qthread::currentthreadid () <<"\ n"; - Managerobject K; - K.start (); the K.threadrun (); -  -     //workthread *p = new Workthread; -    //P->start (); +  -     returna.exec (); +}

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5. Running Results

　　

• So the application of Qt multithreading is also possible, of course, if the computational amount is not or feel this way more troublesome can use qt::concurrent. See Qt threads (3) qt::concurrent

　　

QT Threading (2) using Workobject in Qthread