Howto know whether the Qthread is running inside an object ?

pingal

I've implemented my Qthread as fol:

Listening Listen2Clients;      // Inherits from QObject
QThread *listening_thread = new QThread();
Listen2Clients.moveToThread(listening_thread);

QObject::connect(listening_thread, SIGNAL(started()), &Listen2Clients, SLOT(process()));
QObject::connect(&Listen2Clients, SIGNAL(finished()), listening_thread, SLOT(quit()));

listening_thread->start();

There is a member function in Listen2Clients class like the following :-

void Listening::recvFromQml(...){
 // Here I want to know whether the listening_thread is running or not
}

I cannot use "this->isRunning()" in Listening::recvFromQml().

Christian Ehrlicher

What exactly do you want to achieve? Why do you need to know where Listening is running at this place?

pingal

@Christian-Ehrlicher
Listening::recvFromQml() is connected with a button on the app interface, everytime i press a button, i want the listening_thread to restart.
But before it restarts, i need to know whether that thread is running or not

Christian Ehrlicher

@pingal How should this work - Listen2Clients is in the running in this thread so it can't restart it's own thread. What exactly are you trying to solve with this?

KroMignon

@pingal said in Howto know whether the Qthread is running inside an object ?:

Listening::recvFromQml() is connected with a button on the app interface, everytime i press a button, i want the listening_thread to restart.
But before it restarts, i need to know whether that thread is running or not

Do you mean:

void Listening::recvFromQml(...){
   if(this->thread()->isRunning()) {
       ...
   }
}

EDIT: but this looks to me like a very bad/error prone coding style

pingal

you ppl are right, i'm doing it in the wrong way, let me clarify my objective.

Listening::recvFromQml(...) receive information from QML and start processing in the listening_thread . I want to restart the whole process when new-information is received (i.e. restart the whole processes (thread) when Listening::recvFromQml(...) is invoked again)

Christian Ehrlicher

Then (stop the old and) create the new thread inside recvFromQml().