[Gretl-devel] append and sleep

[Allin Cottrell]

On Fri, 19 Jan 2007, Sven Schreiber wrote:

> Allin Cottrell schrieb:
>> Ah, I see.  But in that context you'd be better off with a flag to make
>> the shell command execute synchronously, i.e. for gretl to wait just as
>> long as is needed for the shell command to complete.
>> (This might have some relevance to Sven's project too.)
>>
>
> I worried about that, too, but I have never had any problems so 
> far. And returning from the external call sometimes takes quite 
> a while, so I thought that synchronicity had been taken care of.

Duh!  You're quite right.  fork(), execl() and friends are a bit 
of a mystery to me, but we were already waiting for the child to 
exit on Linux.  Now I just need to get that working on Windows. 
Next questions: Is there a useful role for a non-waiting variant 
of "!" on Linux?  Which should be the default, waiting or
non-waiting?

Allin.