[ECOS] cyg_cond_signal() without cyg_cond_wait ()

["Trenton D. Adams" <tadams@theone.dnsalias.com>]

I've been looking through the kernel sources for answers now that I
understand a little more how eCos is laid out.

From what I've seen, it would appear that if I call cyg_cond_signal ()
while there isn't a cyg_cond_wait () in progress, nothing will happen at
all.  For example, I thought that MAYBE the condition variable would be
signaled at a later time when cyg_cond_wait () was finally called.  It
looks like cyg_cond_wait () queues the waiting threads and
cyg_cond_signal dequeues them.  But, it appears that cyg_cond_signals
are not queued, correct?

Based on that information, I should leave the condition variable's mutex
locked until such time that I can loop again to call cyg_cond_wait (),
correct?  Should I be locking the scheduler at the end of the loop until
the next loop has started?  If I don't, it's theoretically possible that
a cyg_cond_signal () could occur before I get back to my cyg_cond_wait
(), correct?

Trenton D. Adams
Extreme Engineering
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