function()
{
    for (int k = 0; k < 10; k++)
    {
        pthread_mutex_lock (&pmutex);

        pthread_t pthreads[CPUTHRDS];
        launch_threads(pthreads);

        /* Unlock and start timer */
        pthread_mutex_unlock (&pmutex);
        tot_time = -msecond();

        /* Join taskthreads when they are done */
        join_threads(pthreads);
        tot_time += msecond();

        //<do something>
    }
}

void launch_threads(pthread_t *pthreads)
{
    pthread_attr_t attr;
    pthread_attr_init(&attr);
    pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);

    printf("#HOST# Starting Task Threads\n");

    /* Launch the CPU threads */
    for (int i = 0; i < CPUTHRDS; i++)
    {
        fprintf(stderr, "launchthread %d\n", i);
        int rc = pthread_create(&pthreads[i], &attr, cpu_thread, NULL);
        if (rc) {
            printf("ERROR; return code from pthread_create() is %d\n", rc);
            exit(-1);
        }
    }
    printf("#HOST# CPU-Threads started: %d\n", CPUTHRDS);

    pthread_attr_destroy(&attr);
}

void join_threads(pthread_t *pthreads)
{
    int rc = 0;
    for(int i=0; i < CPUTHRDS; i++)
        {
            void *status;
            rc = pthread_join(pthreads[i], &status);
            if (rc) {
                printf("ERROR; return code from pthread_join() is %d\n", rc);
                exit(-1);
            }
            printf("#HOST# Thread %d joined\n", i);
        }
        printf("#HOST# All threads joined\n");
}

void *cpu_thread(void *arg)
{
    unsigned long thid = pthread_self();
    fprintf(stderr, "started %lu\n", thid);
}