[Info-vax] Listeners in VMS Basic, was: Re: Integrity iLO Configuration?

[Arne Vajhøj]

On 7/1/2021 12:18 AM, Richard Maher wrote:
> On 27/06/2021 2:53 am, Arne Vajhøj wrote:
>> On 6/25/2021 10:02 PM, Dave Froble wrote:
>>> I'll just address my opinion of threads.  Not saying they are
>>> useless, but, if the OS, VMS, already gives me separate "threads"
>>> called processes, why do I want the aggravation of re-inventing it
>>> inside my apps?
>>>
>>> I'm sure someone will cry out "performance", but, with today's 
>>> processors, performance is most likely a rare issue.
>>
>> Threading provides a very convenient programming model.
>>
>> Shared heap is a lot easier than IPC.
>>
>> Sure - it is also possible to shoot oneself in the foot accessing
>> that shared heap.
>>
>> But for people that understand concurrency problems and locking then
>> it should not be a big problem.

> Yes but a simple single threaded shareable image RTL is much easier than 
> Threading or IPC (Although C# async tasks are pretty easy)
> 
> And IIRC correctly there is no thread-granularity T3$PERSONA_ASSUME 
> which allows unprivileged code temporarily assume the Username of the 
> authorized client.
> 
> Let VMS check authorization and not try to duplicate it.

Persona is probably a process attribute not a thread attribute.
Process has P0 and S0 space. Threads just have a slice of P1 space.

But I don't think that is an issue here.

Arne