According to my study of qnx 3 there are built -in function
are availabel for queue handling like -queue_open,
queue_write, queue_close .But these functions are not available
with qnx4.25. ,then how i will accompanish such tasks which are
based on queue.
Sorry, I have not used the queue lib, and therefore are unable to help you any further. I just remembered seeing the above lib when looking around quics quite a while ago. Hopefully soneone else will be able to help with your question.