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https://github.com/boostorg/fiber.git
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94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
#include <cstdlib>
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#include <iostream>
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#include <string>
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#include <boost/assert.hpp>
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#include <boost/bind.hpp>
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#include <boost/intrusive_ptr.hpp>
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#include <boost/ref.hpp>
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#include <boost/optional.hpp>
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#include <boost/fiber/all.hpp>
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typedef boost::fibers::unbounded_channel< std::string > fifo_t;
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inline
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void ping( fifo_t & recv_buf, fifo_t & send_buf)
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{
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boost::fibers::fiber::id id( boost::this_fiber::get_id() );
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boost::optional< std::string > value;
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send_buf.put("ping");
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BOOST_ASSERT( recv_buf.take( value) );
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std::cout << "fiber " << id << ": ping received: " << * value << std::endl;
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value.reset();
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send_buf.put("ping");
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BOOST_ASSERT( recv_buf.take( value) );
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std::cout << "fiber " << id << ": ping received: " << * value << std::endl;
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value.reset();
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send_buf.put("ping");
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BOOST_ASSERT( recv_buf.take( value) );
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std::cout << "fiber " << id << ": ping received: " << * value << std::endl;
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value.reset();
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send_buf.deactivate();
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}
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inline
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void pong( fifo_t & recv_buf, fifo_t & send_buf)
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{
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boost::fibers::fiber::id id( boost::this_fiber::get_id() );
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boost::optional< std::string > value;
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BOOST_ASSERT( recv_buf.take( value) );
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std::cout << "fiber " << id << ": pong received: " << * value << std::endl;
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value.reset();
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send_buf.put("pong");
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BOOST_ASSERT( recv_buf.take( value) );
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std::cout << "fiber " << id << ": pong received: " << * value << std::endl;
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value.reset();
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send_buf.put("pong");
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BOOST_ASSERT( recv_buf.take( value) );
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std::cout << "fiber " << id << ": pong received: " << * value << std::endl;
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value.reset();
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send_buf.put("pong");
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send_buf.deactivate();
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}
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int main()
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{
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boost::fibers::round_robin ds;
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boost::fibers::scheduling_algorithm( & ds);
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try
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{
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fifo_t buf1, buf2;
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boost::fibers::fiber f1(
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boost::bind(
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& ping, boost::ref( buf1), boost::ref( buf2) ) );
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boost::fibers::fiber f2(
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boost::bind(
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& pong, boost::ref( buf2), boost::ref( buf1) ) );
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f1.join();
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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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