Re: [Boost-users] [signals] thread-safe post-disconnect() cleanup

From: Frank Mori Hess (fmhess_at_[hidden])
Date: 2007-02-25 12:57:47

On Sunday 25 February 2007 12:39 pm, Peter Dimov wrote:
> I think I prefer:
>
> bool expired() const;
> R operator()( A... ) const; // throws bad_weak_ptr

As I recall, the other objection raised by Timmo was the ambiguity as to 
whether a caught bad_weak_ptr exception was thrown by the slot or the 
underlying SlotFunction.  In one case, the signal would just disconnect 
the slot and move on.  In the other, it would want to rethrow the 
exception.  Perhaps that could be mitigated by throwing a more specific 
exception, like an expired_slot derived from bad_weak_ptr?

-- 
Frank