Function hl_pop

src/fifo.c:112–132

}

int hl_pop(FIFO_RIG *fifo)
{
    if (fifo->tail == fifo->head) { return -1; }

    pthread_mutex_lock(&fifo->mutex);
    char c = fifo->data[fifo->head];
#if 0

    if (isalnum(c))
        rig_debug(RIG_DEBUG_VERBOSE, "%s: pop %c (%d,%d)\n", __func__, c, fifo->head,
                  fifo->tail);
    else
        rig_debug(RIG_DEBUG_VERBOSE, "%s: pop 0x%02x (%d,%d)\n", __func__, c,
                  fifo->head,
                  fifo->tail);

#endif
    fifo->head = (fifo->head + 1) % HAMLIB_FIFO_SIZE;
    pthread_mutex_unlock(&fifo->mutex);
    return c;
}

#ifdef TEST
int main()