ceph/src/boost/libs/context/example/ontop_void.cpp

   1
   2 //          Copyright Oliver Kowalke 2016.
   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 <tuple>
  10
  11 #include <boost/context/continuation.hpp>
  12
  13 namespace ctx = boost::context;
  14
  15 ctx::continuation f1( ctx::continuation && c) {
  16     std::cout << "f1: entered first time"  << std::endl;
  17     c = c.resume();
  18     std::cout << "f1: entered second time" << std::endl;
  19     c = c.resume();
  20     std::cout << "f1: entered third time" << std::endl;
  21     return std::move( c);
  22 }
  23
  24 ctx::continuation f2( ctx::continuation && c) {
  25     std::cout << "f2: entered" << std::endl;
  26     return std::move( c);
  27 }
  28
  29 int main() {
  30     ctx::continuation c = ctx::callcc( f1);
  31     std::cout << "f1: returned first time" << std::endl;
  32     c = c.resume();
  33     std::cout << "f1: returned second time" << std::endl;
  34     c = c.resume_with( f2);
  35     std::cout << "f1: returned third time" << std::endl;
  36
  37     std::cout << "main: done" << std::endl;
  38
  39     return EXIT_SUCCESS;
  40 }