Re: Is there some way of calling a system command?

[Dirk Heinrichs <dirk.heinrichs@altum.de>]

adambeneschan@gmail.com wrote:

> You could try putting it in a task.  GNAT and other compilers will cause
> the task to run in another thread (depending on the OS, I think), so it
> should probably work, but I won't make any guarantees.  C library routines
> may do stuff that could interfere with the Ada code that handles tasking.

AFAIK Gnat's System.Os_Lib says you shouldn't.

> Other than that: if you're using GNAT, try one of the other suggested
> library routines GNAT provides.  If you're using another compiler, perhaps
> they provide libraries with similar functionality, or else you'll have to
> figure out what OS calls will do the job and use Import pragmas to call
> them yourself.  Ada just doesn't have a standardized mechanism for
> spawning other programs or commands.  It looks like one was discussed in
> 2004 (AI95-371), but it didn't get approved.

There's also SpawnManager (http://www.codelabs.ch/spawn-manager/index.html), 
which was developed to solve System.OsLib's restriction.

HTH...

	Dirk
-- 
Dirk Heinrichs <dirk.heinrichs@altum.de>
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