hurryon wrote:
> Dear colleagues.
>
> I am reading Stevens' book. In his book (apue), a signal concept is
> introduced well, however I can't understand the meaning (pending and
> blocking) in page 283. In the book, he wrote that during the time
> between the generation of a signal and its delivery, the signal is said
> to be pending. Well, I can understand above sentance. But, what's
> meanning blocking?
>
> Does anyone know different between pending and blocking? Please,
> explain the difference.
>
> Cheers.
>

Blocking a signal just sets a bit.

If this signal is later sent, it will not be delivered but it will be
pending until it is no longer blocked.

In other terms: having a signal blocked is a property of your
process/thread, being pending is a property of an instance of a signal.

--
Josef Möllers (Pinguinpfleger bei FSC)
If failure had no penalty success would not be a prize
-- T. Pratchett