mirror of
https://github.com/boostorg/fiber.git
synced 2026-02-20 02:32:19 +00:00
69 lines
1.5 KiB
C++
69 lines
1.5 KiB
C++
|
|
// Copyright Oliver Kowalke 2009.
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// (See accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
#include <iostream>
|
|
#include <cstdlib>
|
|
#include <stdexcept>
|
|
#include <vector>
|
|
|
|
#include <boost/bind.hpp>
|
|
#include <boost/date_time/posix_time/posix_time.hpp>
|
|
#include <boost/ref.hpp>
|
|
|
|
#include "boost/task.hpp"
|
|
|
|
namespace pt = boost::posix_time;
|
|
namespace tsk = boost::tasks;
|
|
|
|
inline
|
|
int fibonacci_fn( int n)
|
|
{
|
|
boost::this_thread::sleep( pt::milliseconds( 500) );
|
|
if ( n == 0) return 0;
|
|
if ( n == 1) return 1;
|
|
int k1( 1), k2( 0);
|
|
for ( int i( 2); i <= n; ++i)
|
|
{
|
|
boost::this_thread::interruption_point();
|
|
int tmp( k1);
|
|
k1 = k1 + k2;
|
|
k2 = tmp;
|
|
}
|
|
boost::this_thread::interruption_point();
|
|
return k1;
|
|
}
|
|
|
|
int main( int argc, char *argv[])
|
|
{
|
|
try
|
|
{
|
|
tsk::static_pool< tsk::unbounded_fifo > pool( tsk::poolsize( 1) );
|
|
|
|
tsk::task< int > t( fibonacci_fn, 10);
|
|
|
|
tsk::handle< int > h(
|
|
tsk::async(
|
|
boost::move( t),
|
|
pool) );
|
|
|
|
boost::this_thread::sleep( pt::milliseconds( 250) );
|
|
|
|
pool.shutdown_now();
|
|
|
|
std::cout << h.get() << std::endl;
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
catch ( tsk::task_interrupted const& )
|
|
{ std::cerr << "task_interrupted: task was interrupted" << std::endl; }
|
|
catch ( std::exception const& e)
|
|
{ std::cerr << "exception: " << e.what() << std::endl; }
|
|
catch ( ... )
|
|
{ std::cerr << "unhandled" << std::endl; }
|
|
|
|
return EXIT_FAILURE;
|
|
}
|