using a thread for running a function

[benamiar]

hello guys again,

i'm trying to use a thread to run a function with Argument, the function is on a big class that interact with several display i need to use the thread only for one or 2 function.

so i don't wont to use my thread for all the class.

the function is called when we push enterbutton so i think i should connect the thread to my function after the pushbutton
so how can we do to use the thread just for a function not all the class ?

i saw that some people are using moveToThread but they are connecting it to a class perhaps i didn't undertood well what they doing so need you help please

bool copyPath(QString sourceDir, QString destinationDir, bool overWriteDirectory)
{
// using thread for this function
// thread start
...........

if(condition==true)
// thread stoped ; retrun true 

}

thanks for help :)

[jsulm]

@benamiar Take a look at https://doc.qt.io/qt-5/qtconcurrentrun.html

[J.Hilk]

@benamiar like @jsulm suggest QtConcurrent seems like the tool you need for your situation.

Just make sure that you do not use member variables inside your function, that you want to run concurrently!

[benamiar]

i did that and i got an erreur wish speak about a non static function memebr

  QFuture<bool> future = QtConcurrent::run(copyPath,pathSrc,pathDes,false);

erreur : invalid use of non-static member function
QFuture<bool> future = QtConcurrent::run(copyPath,pathSrc, pathDes, false);

whats wrong with that line ?
^ ^

[kuzulis]

@benamiar said in using a thread for running a function:

copyPath

Your copyPath() function should be static (I think).

[J.Hilk]

@benamiar said in using a thread for running a function:

QFuture<bool> future = QtConcurrent::run(copyPath,pathSrc,pathDes,false);

IIRC run wants a function pointer?

QFuture<bool> future = QtConcurrent::run(this, &myClass::copyPath,pathSrc,pathDes,false);

[benamiar]

@kuzulis tnx for your reply but the problem is that i can't see any utility or gain in making my function static but in doing that the run is working :)

[benamiar]

@J.Hilk thanks for your help i didn't see the result yet but seems working thank you all :D

[Rodolfo_TT]

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