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fiber/examples/ping_pong.cpp
Oliver Kowalke d0cb6e6756 some examples
2015-09-22 21:10:14 +02:00

88 lines
2.0 KiB
C++

#include <cstdlib>
#include <iostream>
#include <string>
#include <boost/assert.hpp>
#include <boost/intrusive_ptr.hpp>
#include <boost/ref.hpp>
#include <boost/optional.hpp>
#include <boost/fiber/all.hpp>
typedef boost::fibers::unbounded_channel< std::string > fifo_t;
inline
void ping( fifo_t & recv_buf, fifo_t & send_buf)
{
boost::fibers::fiber::id id( boost::this_fiber::get_id() );
send_buf.push( std::string("ping") );
std::string value = recv_buf.value_pop();
std::cout << "fiber " << id << ": ping received: " << value << std::endl;
value.clear();
send_buf.push( std::string("ping") );
value = recv_buf.value_pop();
std::cout << "fiber " << id << ": ping received: " << value << std::endl;
value.clear();
send_buf.push( std::string("ping") );
value = recv_buf.value_pop();
std::cout << "fiber " << id << ": ping received: " << value << std::endl;
send_buf.close();
}
inline
void pong( fifo_t & recv_buf, fifo_t & send_buf)
{
boost::fibers::fiber::id id( boost::this_fiber::get_id() );
std::string value = recv_buf.value_pop();
std::cout << "fiber " << id << ": pong received: " << value << std::endl;
value.clear();
send_buf.push( std::string("pong") );
value = recv_buf.value_pop();
std::cout << "fiber " << id << ": pong received: " << value << std::endl;
value.clear();
send_buf.push( std::string("pong") );
value = recv_buf.value_pop();
std::cout << "fiber " << id << ": pong received: " << value << std::endl;
send_buf.push( std::string("pong") );
send_buf.close();
}
int main()
{
try
{
{
fifo_t buf1, buf2;
boost::fibers::fiber f1( & ping, boost::ref( buf1), boost::ref( buf2) );
boost::fibers::fiber f2( & pong, boost::ref( buf2), boost::ref( buf1) );
f1.join();
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;
}