Re: [Boost-users] Deferred Function calls

From: Sohail Somani (s.somani_at_[hidden])
Date: 2006-10-24 17:30:05

> -----Original Message-----
> From: boost-users-bounces_at_[hidden] 
> [mailto:boost-users-bounces_at_[hidden]] On Behalf Of Matt Davies
> 
> I am implementing a signal & slots implementation with a 
> twist.  Normally 
> when a signal is fired the connected slots are called 
> immediately.  I will 
> need to defer the actual calls to be invoked later.  
> Basically I need to 
> store the function reference (via pointer or functor) and the 
> accompanying 
> parameter values to a 'composite' object.  This composite 
> object will be 
> stored on a buffer.  Later another processor will pick this 
> object of the 
> buffer and then invoke the actual function call.
> 
> I am not sure how to do this, or if it can be done.  I've 
> been looking at 
> functors and binding functionality in Boost but I am not sure 
> if I can store 
> a functor with parameter values in a generic container only 
> to invoke it at 
> a later time.  The motivation is that I want a signal & slots 
> solution where 
> slots are executed on different processors in a 
> multi-processor environment.

I think you're on the right track. Basically, you want the interface to
be `void fn()' Binding should help you:

deferred_fn_t fn=boost::bind(the_function,1,2,3);

And have a vector of deferred_fn_t's?

HTH!

Sohail