I'm trying to port a device driver from Linux to QNX. The driver uses wait queues and the wait_event_interruptible() and
 wake_up_interruptible() system calls to do synchronization. QNX (6.5.0) doesn't have the same system calls. Are 
condition variables as close as I'm going to come to the equivalent of wait queues, or is there some other way to 
accomplish the same thing?