#include <QtConcurrentMap>
#include <QImage>

struct Job
{
    Job(QString _fileName="")
        : fileName(_fileName)
    {
    }
    void run()
    {
        image = QImage(fileName);
    }
    QString fileName;
    QImage image;
};

int main(int argc, char* argv[])
{
    if(argc<2)
    {
        qDebug() << "Please supply an image path.";
        return -1;
    }

    // If the following line is uncommented, the application won't crash.
    // QThreadPool::globalInstance()->setMaxThreadCount(1);
    
    QVector<Job> jobs(15, Job(argv[1]));
    QtConcurrent::map(jobs, &Job::run).waitForFinished();
    return 0;
}