Say it isn't so! (Formerly: Ada replacements for DOS I/O)

["Bennett, Chip (KTR) ~U" <BennettC@J64.STRATCOM.AF.MIL>]

Chris Warwick <cwarwick@FOX.NSTN.NS.CA> wrote:

> We just got burned on a project using Alsys Ada. Seems we had assumed that
> a multi-tasking Ada program would perform I/O is parallel with other
> processing. The system service call actucally halts all processing in the
> program until the system service is complete...

> I don't mean to burn Alsys, since the bug(?) also exists in the Verdix
> compiler we are using. The difference is the Verdix is for Unix so we just
> sidestepped the problem by not using Ada tasks...

We use SunAda (aka Verdix) with Motif.  Does this mean that if an
application is drawing to the screen and number crunching at the same time
in a separate Ada task, that the "background" task is going to be suspended
for the same I/O interrupts that the "foreground" task is being suspended?

Does everyone else consider this acceptable, or am I the only one that is
appalled?

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* Chip Bennett, GDE Systems Inc | BennettC@j64.stratcom.af.mil  *
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