Re: safe shut-down

[Jose Eusebio Roza Pando <jeroza alu uah es>]

Carlos Pereira escribió:

> > Of course the user can still kill -9, and your app can still crash,
> > so you probably don't want to depend on disabling Ctrl-C.
>
> I think it depends of the specific situation,
> in most cases, disabling ctrC can be seen as a
> very user-unfriendly choice, but sometimes it
> might the best option:
>
> - If the application is going to handle a
> sensible file, it makes sense to disable
> ctrC before and enabling it again as soon as
> the operation is completed. This might help to
> avoid data corruption, if the user did ctrC,
> by acident or without thinking. Of course the user
> can still kill the program with kill -9 but then
> it is her/his responsability. Usually people don't
> do kill -9 by accident but indeed they do ctrC.
>
> - If the program is, say a CAD application, where
> the user is building some complex piece, or even a text
> editor, if he/she does a ctrC, important data might
> be lost if the user didn't save it before...
> (for example XEmacs doesn't accept ctrC, at
> least in my system)
>
> On the other hand, if the program crashes when ctrC is
> disabled, say with a forever loop, then the user can
> always do a kill -9 to stop execution. I accept that if
> a program freezes most mainstream users don't know the
> kill -9 command but probably they don't know ctrC either...
>
> Carlos
>
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 I think so, Carlos, I like your idea.
Thank you for your answers.
  Eusebio

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