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

From: Pedro Lamarão (pedro.lamarao_at_[hidden])
Date: 2006-03-09 14:28:09

Sliwa, Przemyslaw (London) escreveu:
> I was though thread is created by a pointer to a function, e.g. 
> 
> Int foo(int x, int y, int z)
> {
> 	// do something with a,b,c
> 	return a+b+c;
> }
> 
> Boost::thread pop(boost::bind(&foo, a, b, c));
> // do something else
> 
> pop.join();
> 
> The question is how to retrieve the result from foo running in pop.

void foo_wrapper (int x, int y, int z, int& out)
{
    out = foo(x, y, z);
}

int retval = 0;

boost::thread pop(
    boost::bind(&foo_wrapper, a, b, c, retval)
);

pop.join();

// Check retval.

--
 Pedro Lamarão