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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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