suspend + delay mechanism?

[Eric Peterson <ericp@troikanetworks.com>]

    Is it possible to do an pthread_suspend_np with a delay in RT-Linux
    (3.0)?  I'd like to suspend a task, but if he isn't woken up (e.g.
    lost the interrupt), I want to pop out of the suspend and poll.

    The easiest way I see is to use pthread_wait_np(), in a periodic
    task, and use (if possible) pthread_wakeup_np() to awaken it from
    the intr handler.  But based on the man pages, it isn't explicitly
    stated that I can "pthread_wakeup_np" a thread that hasn't used
    pthread_suspend_np() to suspend itself.

    Yes, I know I could create a "timer task" to do the wakeups, but
    unless necessary, I'd rather use the built-in (pthread_make_periodic_np) 
    functionality.  If there's is a better way to do this, I'm all
    ears...

    One more query: is there a document that generally describes when
    one can use the various RT calls, and from what context one can use
    Linux kernel routines?  Pointers appreciated.

Regards,
Eric

-- 
The United States is a nation of laws, badly written and randomly enforced.
-- Frank Zappa 

Eric Peterson WB6PYK (805)370-3046 mailto:ericp@troikanetworks.com
    http://www.troikanetworks.com