1 2 // Copyright Oliver Kowalke 2016. 3 // Distributed under the Boost Software License, Version 1.0. 4 // (See accompanying file LICENSE_1_0.txt or copy at 5 // http://www.boost.org/LICENSE_1_0.txt) 6 7 #include <cstdlib> 8 #include <iostream> 9 10 #include <boost/context/continuation.hpp> 11 12 namespace ctx = boost::context; 13 f1(ctx::continuation && c)14ctx::continuation f1( ctx::continuation && c) { 15 std::cout << "f1: entered first time" << std::endl; 16 c = c.resume(); 17 std::cout << "f1: entered second time" << std::endl; 18 return std::move( c); 19 } 20 main()21int main() { 22 ctx::continuation c = ctx::callcc( f1); 23 std::cout << "f1: returned first time" << std::endl; 24 c = c.resume(); 25 std::cout << "f1: returned second time" << std::endl; 26 std::cout << "main: done" << std::endl; 27 return EXIT_SUCCESS; 28 } 29