68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
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// Copyright Oliver Kowalke 2013.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <cstdlib>
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#include <functional>
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#include <stdexcept>
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#include <iostream>
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#include <string>
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#include <boost/fiber/all.hpp>
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int value1 = 0;
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int value2 = 0;
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void fn1()
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{
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boost::fibers::fiber::id this_id = boost::this_fiber::get_id();
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for ( int i = 0; i < 5; ++i)
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{
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++value1;
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std::cout << "fiber " << this_id << " fn1: increment value1: " << value1 << std::endl;
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boost::this_fiber::yield();
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}
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std::cout << "fiber " << this_id << " fn1: returns" << std::endl;
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}
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void fn2( boost::fibers::fiber & f)
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{
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boost::fibers::fiber::id this_id = boost::this_fiber::get_id();
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for ( int i = 0; i < 5; ++i)
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{
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++value2;
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std::cout << "fiber " << this_id << " fn2: increment value2: " << value2 << std::endl;
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if ( i == 1)
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{
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boost::fibers::fiber::id id = f.get_id();
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std::cout << "fiber " << this_id << " fn2: joins fiber " << id << std::endl;
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f.join();
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std::cout << "fiber " << this_id << " fn2: joined fiber " << id << std::endl;
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}
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boost::this_fiber::yield();
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}
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std::cout << "fiber " << this_id << " fn2: returns" << std::endl;
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}
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int main()
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{
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try
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{
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boost::fibers::fiber f1( fn1);
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boost::fibers::fiber f2( fn2, std::ref( f1) );
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f2.join();
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std::cout << "done." << std::endl;
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return EXIT_SUCCESS;
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}
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catch ( std::exception const& e)
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{ std::cerr << "exception: " << e.what() << std::endl; }
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catch (...)
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{ std::cerr << "unhandled exception" << std::endl; }
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return EXIT_FAILURE;
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}
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