Re: Delay guarantees

["Robert I. Eachus" <eachus@mitre.org>]

Bryce Bardin wrote:
 
> Case 3) is, of course, the effect of section 9.6(20) of the Ada
> Reference
> Manual, which says, in part:
> 
> For a delay_relative_statement, the expiration time is defined as
> the current time, in the time base associated with relative delays,
> plus the value of the delay_expression converted to the type
> Duration, and then _rounded up to the next clock tick_.

    If you are going that far, you really should quote the next
sentence:

    The time base associated with relative delays is as defined in D.9,
"Delay Accuracy" or is implementation defined.

    Translation:  If the compiler supports the real-time annex, you can
look it up.  Otherwise ask your vendor. ;-)

-- 

                                        Robert I. Eachus

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