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- // Copyright Oliver Kowalke 2013.
- // 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 <functional>
- #include <stdexcept>
- #include <iostream>
- #include <string>
- #include <boost/fiber/all.hpp>
- int value1 = 0;
- int value2 = 0;
- void fn1()
- {
- boost::fibers::fiber::id this_id = boost::this_fiber::get_id();
- for ( int i = 0; i < 5; ++i)
- {
- ++value1;
- std::cout << "fiber " << this_id << " fn1: increment value1: " << value1 << std::endl;
- boost::this_fiber::yield();
- }
- std::cout << "fiber " << this_id << " fn1: returns" << std::endl;
- }
- void fn2( boost::fibers::fiber & f)
- {
- boost::fibers::fiber::id this_id = boost::this_fiber::get_id();
- for ( int i = 0; i < 5; ++i)
- {
- ++value2;
- std::cout << "fiber " << this_id << " fn2: increment value2: " << value2 << std::endl;
- if ( i == 1)
- {
- boost::fibers::fiber::id id = f.get_id();
- std::cout << "fiber " << this_id << " fn2: joins fiber " << id << std::endl;
- f.join();
- std::cout << "fiber " << this_id << " fn2: joined fiber " << id << std::endl;
- }
- boost::this_fiber::yield();
- }
- std::cout << "fiber " << this_id << " fn2: returns" << std::endl;
- }
- int main()
- {
- try
- {
- boost::fibers::fiber f1( fn1);
- boost::fibers::fiber f2( fn2, std::ref( f1) );
- f2.join();
- std::cout << "done." << std::endl;
- return EXIT_SUCCESS;
- }
- catch ( std::exception const& e)
- { std::cerr << "exception: " << e.what() << std::endl; }
- catch (...)
- { std::cerr << "unhandled exception" << std::endl; }
- return EXIT_FAILURE;
- }
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