Re: [Boost-users] How to retrieve a value from a thread

9 Mar 2006

      Try the following inline changes.

Sliwa, Przemyslaw (London) wrote:
...
I was though thread is created by a pointer to a function, e.g.
void AssignResult( Int& aRef, Int aVal )
{
    aRef = aVal;
}
...
Int foo(int x, int y, int z)
{
// do something with a,b,c
return a+b+c;
}
Int lResult = 0;
...
Boost::thread pop( boost::bind( &AssignResult
                                , boost::ref( lResult  )
                                , boost::bind(&foo, a, b, c)
                                )
                    );
...
// do something else
pop.join();
assert( lResult = foo( a, b, c ) );

is one possibilty. This has not been tested. The inner bind may need to be 
'protected', see http://www.boost.org/libs/bind/bind.html#nested_binds.

Jeff Flinn