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arangodb/3rdParty/boost/1.62.0/libs/context/example/v2/throw.cpp

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// Copyright Oliver Kowalke 2014.
// 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 <stdexcept>
#include <tuple>
#include <boost/context/all.hpp>
struct my_exception {
boost::context::execution_context< void > ctx;
my_exception( boost::context::execution_context< void > && ctx_) :
ctx( std::forward< boost::context::execution_context< void > >( ctx_) ) {
}
};
boost::context::execution_context<void> f1(boost::context::execution_context<void> ctx) {
try {
for (;;) {
std::cout << "f1()" << std::endl;
ctx = ctx();
}
} catch ( my_exception & e) {
std::cout << "f1(): my_exception catched" << std::endl;
ctx = std::move( e.ctx);
}
return ctx;
}
boost::context::execution_context<void> f2(boost::context::execution_context<void> ctx) {
throw my_exception( std::move( ctx) );
return ctx;
}
int main() {
boost::context::execution_context< void > ctx( f1);
ctx = ctx();
ctx = ctx();
ctx = ctx( boost::context::exec_ontop_arg, f2);
std::cout << "main: done" << std::endl;
return EXIT_SUCCESS;
}