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

Gottlob Frege wrote:

On 2/23/07, Frank Mori Hess wrote:

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Could you give a short example of how that would look with using bind and a simple free function expecting a pointer or reference to an object that should be tracked?

Attached.

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From the attached: boost::shared_ptr<coordinate> coord(new coordinate); coord->x = 5; sig.connect(boost::bind(&myfunction, boost::signalslib::track(coord, boost::ref(coord->x))));

I actually like the suggestion of just offering a way to add the tracked pointers manually. Either sig.connect( boost::bind( myfunction, boost::ref(coord->x) ), coord ); or sig.connect( boost::bind( myfunction, boost::ref(coord->x) ).track( coord ); Both look better on a syntactic level to me. In addition, I suspect that signalslib::track contains a race condition that is avoided by the other alternatives (but I haven't actually looked at it so I might be wrong; it's possible, if somewhat tedious, to implement it correctly).