Re: [boost] Review Request: future library (Gaskill version)

From: Frank Mori Hess (frank.hess_at_[hidden])
Date: 2008-04-10 09:36:50

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On Wednesday 09 April 2008 22:17 pm, Peter Dimov wrote:
> I no longer like future<>::cancel. :-) Have you considered the alternative
> of automatically invoking the cancel handler when no futures remain? This
> requires that a promise and a future be created at once:
>
>     pair<promise,future> pc = create_channel();

Would that really be necessary?  Presumably, you would only want it to call 
the cancel handler when the future reference count makes the transition from 
1 to 0, not potentially multiple times while the reference count sits at 0.

> or, if empty futures are allowed:
>
>     future f; // empty/detached
>     promise p(f); // attach p to f

- -- 
Frank
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