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- // Copyright Oliver Kowalke 2016.
- // 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 <cstdlib>
- #include <iostream>
- #include <boost/context/continuation.hpp>
- namespace ctx = boost::context;
- int main() {
- ctx::continuation c;
- int data = 1;
- c = ctx::callcc(
- [&data](ctx::continuation && c){
- std::cout << "entered first time: " << data << std::endl;
- data += 2;
- c = c.resume();
- std::cout << "entered second time: " << data << std::endl;
- return std::move( c);
- });
- std::cout << "returned first time: " << data << std::endl;
- data += 2;
- c = c.resume();
- if ( c) {
- std::cout << "returned second time: " << data << std::endl;
- } else {
- std::cout << "returned second time: execution context terminated" << std::endl;
- }
- std::cout << "main: done" << std::endl;
- return EXIT_SUCCESS;
- }
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