On 11 September 2011 09:02, Riccardo Cattaneo
<[email protected]> wrote:
> Of course, the module from which I'm calling them must be already loaded and 
> initialized, isn't it?
> Riccardo

Well, yes - but then, you can just add something to the module load
code to start off the callout.

There are race conditions to keep in mind though - the callout may
just about to be in-play when you go to remove it. The callout manpage
points out these situations under "Avoiding Race Conditions."


Adrian
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