Re: [Threads-devel] Bind question for member functions

Subject: Re: [Threads-devel] Bind question for member functions
From: Anthony Williams (anthony_at_[hidden])
Date: 2009-01-08 12:23:54

At Thu 08 Jan 2009 17:15:58 UTC, David Eaves <ideaves_at_[hidden]> wrote:

> For example, when I specify the following, it should compile and work
> just the same as the simpler example, where count() has file scope. I
> took care to create local copies of the function ptr objects, as has
> been suggested in several threads. Since bind is supposed to create a
> copy of the function ptr, my creation of two local copies is probably
> overkill. But anyway, once the function pointer is to a member of foo
> instead of the simpler case, it will no longer compile.

>   void (some_api_class::*fp1)(int) = &some_api_class::do_one_foo_task;
>   boost::thread thrd1(boost::bind(fp1,1));

If you pass a member function, you need an object to bind it to. In  
this case, an object of type "some_api_class". Try

boost::thread thrd1(boost::bind(fp1,&some_object,1));

Where some_object is an instance of some_api_class.

Anthony
-- 
Anthony Williams
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