I have a for-loop that will run a fixed number of times, usually in

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Asked: May 30, 20262026-05-30T01:31:59+00:00 2026-05-30T01:31:59+00:00

I have a for-loop that will run a fixed number of times, usually in

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I have a for-loop that will run a fixed number of times, usually in the 100-300 range depending on the input. Every iteration of this loop calls a function that I want to be threaded. The function to thread grabs data from an input file, does some stuff with it, then writes it out in a new format to an output file…

Here is some high-level code:

void myClass::processFile()
{
    ...

    for (int index = 0; index < 200; index++)
    {
        //Function or loop to thread
        generateData(someMapOfMaps1[index], someMapOfMaps2[index]);
    }
}

Then inside generateData within the same class:

void myClass::generateData(QMap<float, foo*> mapA, QMap<float, foo*> mapB)
{
    //read in data from a file
    //process data
    //write data to a different file
}

I played around with QtConcurrent::run() and QtConcurrent::mapped() but didn’t have much luck. I believe mapped() would have been a great choice, but my function takes 2 maps instead of just one.

I was using this as a resource, around slide 25: http://www.develer.com/promo/workshop/enhancing_with_multi_threading.pdf

Thanks!