[ECOS] Need clarification for cyg_mbox_timed_get()

[Andrew Lunn]

Nick has already answered, but....

On Thu, Jun 17, 2004 at 11:05:23AM -0700, Jay Foster wrote:
> The documentation for cyg_mbox_timed_get() states that it "will wait until
> either a message is available or until a number of clock ticks have
> occurred."

To fully quote the documentation: 

There are two variants of cyg_mbox_get. The first, cyg_mbox_timed_get
will wait until either a message is available or until a number of
clock ticks have occurred. The number of ticks is specified as an
absolute, not relative tick count, and so in order to wait for a
relative number of ticks, the return value of the cyg_current_time()
function should be added to determine the absolute number of ticks.

> I assumed it was clock ticks occurred since the call to
> cyg_mbox_timed_get(), but it seems to behave as if it is clock ticks
> occurred since boot time (not as useful).  What is the correct behavior?

Question: Why is it not as useful?

        Andrew

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