Re: protected objects and data structures

[Tucker Taft <stt@avercom.net>]

James Rogers wrote:
> 
> Sure.
> 
> With variant records you will need to create the linked list such that
> each element is dynamically allocated and the node is initialized with
> the variant being stored. This will work unless the variant record you
> are allocating contains a task object. In that case the allocation is
> potentially blocking. Potentially blocking operations are forbidden in
> a protected operation.

Just to be clear, allocation is never potentially blocking.
It is the initialization of the object that might
be potentially blocking.  In the very rare
case of putting a task inside a variant record, you
could get into trouble.  In general, however, it is
perfectly fine to use linked lists of variant or tagged
records inside protected objects.

> 
> Jim Rogers
> Colorado Springs, Colorado USA

-Tucker Taft  stt@avercom.net
> 
> Tony Gair wrote:
> >
> > Has anyone here used a predefined ada data structure inside a protected object.
> >
> > My problem is that I need to store a undefined amount of variant records inside a
> > protected variable / object.
> >
> > Any ideas

-- 
-Tucker Taft   stt@avercom.net   http://www.avercom.net
Chief Technology Officer, AverCom Corporation (A Titan Company) 
Bedford, MA  USA (AverCom was formerly the Commercial Division of AverStar:
http://www.averstar.com/~stt)