std.process: spawnProcess

[Russel Winder]

On Sat, 2018-09-08 at 10:24 +0000, FreeSlave via Digitalmars-d-learn wrote:
> On Friday, 7 September 2018 at 14:36:42 UTC, Russel Winder wrote:
> > From what I can see, processes created with std.process: 
> > spawnProcess are not terminated when the creating process 
> > terminates, i.e. it seems Config.detached is the default for 
> > these process.
> 
> No, detached is not default. By default you should call wait on 
> processes to free OS resources. Process may stay as zombie 
> otherwise and it can be visible in process manager.

Annoying but yes, it looks like having a global registry of processes has to
be created so they can be killed on main termination. :-(

Though I am going to tinker with Basile B's suggestion of using a managing
object with a destructor to see if that can avoid the global registry. 

> > Is there a way of all spawned processes being terminated on 
> > main termination?
> 
> You probably need to register all child processes. Or spawn them 
> as detached so you won't need to worry about freeing them.

Detached is not a good idea, the spawned processes should not outlive the
spawning process.
-- 
Russel.
===========================================
Dr Russel Winder      t: +44 20 7585 2200
41 Buckmaster Road    m: +44 7770 465 077
London SW11 1EN, UK   w: www.russel.org.uk

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