ceph/src/boost/libs/context/example/v2/jump.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
  10 #include <boost/context/all.hpp>
  11
  12 namespace ctx = boost::context;
  13
  14 ctx::execution_context< int > f1( ctx::execution_context< int > ctxm, int data) {
  15     std::cout << "f1: entered first time: " << data << std::endl;
  16     std::tie( ctxm, data) = ctxm( data + 2);
  17     std::cout << "f1: entered second time: " << data << std::endl;
  18     return ctxm;
  19 }
  20
  21 int main() {
  22     int data = 1;
  23     ctx::execution_context< int > ctx1( f1);
  24     std::tie( ctx1, data) = ctx1( data + 2);
  25     std::cout << "f1: returned first time: " << data << std::endl;
  26     std::tie( ctx1, data) = ctx1( data + 2);
  27     std::cout << "f1: returned second time: " << data << std::endl;
  28
  29     std::cout << "main: done" << std::endl;
  30
  31     return EXIT_SUCCESS;
  32 }