Re: What is your opinion on Global Objects?

["J-P. Rosen" <rosen@adalog.fr>]

Le 19/11/2014 10:13, Hubert a écrit :
> Ok this is still an access of the global object directly from a
> subprogram. The subprogram then accesses the variable with the data
> ijnternally which is the same as accessing a global object. The data
> object itself is not passed through the parameters of the subprogram
> that uses it.
<Plug>
Note that AdaControl (rule Directly_Accessed_Globals) can enforce that
this pattern is used safely. From the User's Guide:

"this rule enforces that all global variables are accessed by dedicated
access subprograms, and that only those subprograms access the variables
directly. If given with the keyword “protected” and/or “accept”, it
enforces that global variables are accessed only by dedicated protected
subprograms or tasks, ensuring that no race condition is possible"
</Plug>

-- 
J-P. Rosen
Adalog
2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX
Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00
http://www.adalog.fr