ceph/src/boost/libs/context/example/v1/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 boost::context::execution_context * ctx1 = nullptr;
  13 boost::context::execution_context * ctx2 = nullptr;
  14 boost::context::execution_context * ctx = nullptr;
  15
  16 void f1( int i, void *) {
  17     std::cout << "f1: entered" << std::endl;
  18     std::cout << "i == " << i << std::endl;
  19     ( * ctx2)();
  20     std::cout << "f1: re-entered" << std::endl;
  21     ( * ctx2)();
  22 }
  23
  24 void f2( void *) {
  25     std::cout << "f2: entered" << std::endl;
  26     ( * ctx1)();
  27     std::cout << "f2: re-entered" << std::endl;
  28     ( * ctx)();
  29 }
  30
  31 int main() {
  32     {
  33         boost::context::execution_context ctx1_( f1, 3);
  34         ctx1 = & ctx1_;
  35         boost::context::execution_context ctx2_( f2);
  36         ctx2 = & ctx2_;
  37         boost::context::execution_context ctx_( boost::context::execution_context::current() );
  38         ctx = & ctx_;
  39
  40         ( * ctx1)();
  41     }
  42     std::cout << "main: done" << std::endl;
  43     return EXIT_SUCCESS;
  44 }