Re: Private or public task ?

["mkasun@gmail.com" <mkasun@gmail.com>]

On Feb 5, 4:38 pm, "Jeffrey R. Carter"
<spam.jrcarter....@spam.acm.org> wrote:
> Hibou57 (Yannick Duch ne) wrote:
>
> > So I wanted to solve this, and added a protected object providing an
> > Put procedure which was displaying the same message, all three
> > statement in an atomic procedure.
>
> Technically this is a bounded error: Ada.Text_IO.Put* operations are potentially
> blocking, and should not be called from a protected operation.
>
> > Later, I advised the task may terminates while some potential clients
> > may still be alive, or even the task may terminates before any client
> > had time to make any first request.
>
> This should not happen. Did you actually experience this?
>
> --
> Jeff Carter
> "He didn't get that nose from playing ping-pong."
> Never Give a Sucker an Even Break
> 110

Why do people insist that Ada.Text_IO.Put routines are potentially
blocking.

From the ARM

Discussion: {AI95-00178-01} Any subprogram in a language-defined input-
output package that has a file parameter or result or operates on a
default file is considered to manipulate a file. An instance of a
language-defined input-output generic package provides subprograms
that are covered by this rule. The only subprograms in language-
defined input-output packages not covered by this rule (and thus not
potentially blocking) are the Get and Put routines that take string
parameters defined in the packages nested in Text_IO.