Re: 4 beginner's questions on the PL Ada

[Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>]

On 08/09/2013 11:51 AM, Adam Beneschan wrote:
> On Friday, August 9, 2013 11:29:31 AM UTC-7, Jeffrey Carter wrote:
>> On 08/09/2013 09:50 AM, Emanuel Berg wrote:
>>
>>> 3. Is it possible to get the task *name* (from the code) into a string,
>>> programatically? That way, a generic procedure could be used to
>>> communicate from tasks, with Put_Line, and without having to hard code
>>> the task name every time.
>>
>> It's possible to get a name using Ada.Tags.Expanded_Name.
>
> Unless he's declaring a tagged task type (which is possible only by deriving
> it from an interface), there's nothing you can pass as a parameter to
> Expanded_Name.  If he's declaring a standalone task object (with an anonymous
> type), then I don't think there's a way to do this even if the task is
> derived from an interface.

You can declare a tagged type T in the task, and pass T'Tag to Expanded_Name. 
The task "name" is embedded in the resulting string, and is easy to isolate.

-- 
Jeff Carter
"Well, a gala day is enough for me. I don't think
I can handle any more."
Duck Soup
93