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"Team Ada: Ada Advocacy Issues (83 & 95)" <[log in to unmask]>
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Randy Brukardt <[log in to unmask]>
Date:
Thu, 28 Jun 2001 11:31:52 -0700
Reply-To:
Edward Colbert <[log in to unmask]>
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From:
Edward Colbert <[log in to unmask]>
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Hi Randy,

I didn't _forget_ 9.5.1(18), I just couldn't remember which paragraph said
that I/O subprograms are potentially and couldn't find the paragraph in my
quick review (;->).  But, that answers my question, thanks!

Take Care,
Ed

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"Always do right.  It will please a few and astonish the rest."
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Edward Colbert
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-----Original Message-----
From: Randy Brukardt [mailto:[log in to unmask]]
Sent: Thursday, June 28, 2001 10:56 AM
To: [log in to unmask]
Cc: [log in to unmask]
Subject: RE: Concurrency & I/0

> Hi All,
>
> Can someone confirm that it is still implementation defined whether I/O
> operations (Put, Get, 'Write, 'Read) are atomic, blocking, or subject to
> Priority_Ceiling.  In quick review of the manual & rational, I found the
> following:

...

You forgot 9.5.1(18): IO subprograms are "potentially blocking". (And thus
cannot be called from a protected object.) Thus, the question about
Priority_Ceiling is moot.

Of course, that doesn't say whether they REALLY are blocking.

                Randy Brukardt.

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