#ifdef Q_SPY

extern "C" void *idleThread(void *me) {     // the expected P-Thread signature

    for (;;) {

        struct timeval timeout = { 0 };                // timeout for select()

        timeout.tv_usec = 8000;                // always set timeout in Linux

           // sleep for the full tick or until a console input arrives, NOTE01

        select(0, 0, 0, 0, &timeout);



        {                                                 // perform QS output

            uint16_t nBytes = 1000;

            uint8_t const *block;

            QF_INT_LOCK(ignore);

            block = QS::getBlock(&nBytes);

            QF_INT_UNLOCK(ignore);

            if (block != (uint8_t *)0) {

                send(l_sock, (char const *)block, nBytes, 0);

            }

        }

    }



    return (void *)0;                                        // return success

}

#endif



/* either in QF::onStartup() or in QS::onStartup() ...*/

    . . .

    pthread_t idle;

    if (pthread_create(&idle, &attr, &idleThread, 0) != 0) {

               // Creating the p-thread with the SCHED_FIFO policy failed.

               // Most probably this application has no superuser privileges,

               // so we just fall back to the default SCHED_OTHER policy

               // and priority 0.

        pthread_attr_setschedpolicy(&attr, SCHED_OTHER);

        param.sched_priority = 0;

        pthread_attr_setschedparam(&attr, ¶m);

        Q_ALLEGE(pthread_create(&idle, &attr, &idleThread, 0) == 0);

    }

    pthread_attr_destroy(&attr);

    . . .