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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;
- class moveable {
- public:
- int value;
- moveable() :
- value( -1) {
- }
- moveable( int v) :
- value( v) {
- }
- moveable( moveable && other) {
- std::swap( value, other.value);
- }
- moveable & operator=( moveable && other) {
- if ( this == & other) return * this;
- value = other.value;
- other.value = -1;
- return * this;
- }
- moveable( moveable const& other) = delete;
- moveable & operator=( moveable const& other) = delete;
- };
- int main() {
- ctx::continuation c;
- moveable data{ 1 };
- c = ctx::callcc( std::allocator_arg, ctx::fixedsize_stack{},
- [&data](ctx::continuation && c){
- std::cout << "entered first time: " << data.value << std::endl;
- data = std::move( moveable{ 3 });
- c = c.resume();
- std::cout << "entered second time: " << data.value << std::endl;
- data = std::move( moveable{});
- return std::move( c);
- });
- std::cout << "returned first time: " << data.value << std::endl;
- data.value = 5;
- c = c.resume();
- std::cout << "returned second time: " << data.value << std::endl;
- std::cout << "main: done" << std::endl;
- return EXIT_SUCCESS;
- }
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