ceph/src/boost/libs/context/example/v1/fibonacci.cpp

   1
   2 //          Copyright Oliver Kowalke 2014.
   3 // Distributed under the Boost Software License, Version 1.0.
   4 //    (See accompanying file LICENSE_1_0.txt or copy at
   5 //          http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #include <cstdlib>
   8 #include <iostream>
   9 #include <memory>
  10
  11 #include <boost/context/all.hpp>
  12
  13 int main() {
  14     int n=35;
  15     boost::context::execution_context sink( boost::context::execution_context::current() );
  16     boost::context::execution_context source(
  17         [n,&sink](void*)mutable{
  18             int a=0;
  19             int b=1;
  20             while(n-->0){
  21                 sink(&a);
  22                 auto next=a+b;
  23                 a=b;
  24                 b=next;
  25             }
  26         });
  27     for(int i=0;i<10;++i){
  28         std::cout<<*(int*)source()<<" ";
  29     }
  30     std::cout << "\nmain: done" << std::endl;
  31     return EXIT_SUCCESS;
  32 }