ceph/src/boost/libs/process/test/async_system_stackless.cpp

   1 // Copyright (c) 2016 Klemens D. Morgenstern
   2 //
   3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #define BOOST_TEST_MAIN
   7 #define BOOST_TEST_IGNORE_SIGCHLD
   8 #include <boost/test/included/unit_test.hpp>
   9
  10 #include <boost/process/error.hpp>
  11 #include <boost/process/io.hpp>
  12 #include <boost/process/async.hpp>
  13 #include <boost/process/child.hpp>
  14 #include <boost/process/async_system.hpp>
  15
  16 #include <string>
  17 #include <boost/asio/io_context.hpp>
  18 #include <boost/asio/spawn.hpp>
  19 #include <boost/asio/coroutine.hpp>
  20 #include <boost/asio/use_future.hpp>
  21 #include <boost/asio/yield.hpp>
  22
  23 #include <vector>
  24 #include <array>
  25
  26 namespace bp = boost::process;
  27 BOOST_AUTO_TEST_CASE(stackless, *boost::unit_test::timeout(15))
  28 {
  29     using boost::unit_test::framework::master_test_suite;
  30
  31     boost::asio::io_context ios;
  32
  33     bool did_something_else = false;
  34
  35     struct stackless_t : boost::asio::coroutine
  36     {
  37         boost::asio::io_context & ios;
  38         bool & did_something_else;
  39
  40         stackless_t(boost::asio::io_context & ios_,
  41                     bool & did_something_else)
  42                         : ios(ios_), did_something_else(did_something_else) {}
  43         void operator()(
  44                 boost::system::error_code ec = boost::system::error_code(),
  45                 std::size_t exit_code = 0)
  46         {
  47             if (!ec) reenter (this)
  48             {
  49                 yield bp::async_system(
  50                         ios, *this,
  51                         master_test_suite().argv[1],
  52                         "test", "--exit-code", "42");
  53
  54                 BOOST_CHECK_EQUAL(exit_code, 42);
  55                 BOOST_CHECK(did_something_else);
  56             }
  57         }
  58     } stackless{ios, did_something_else};
  59
  60     ios.post([&]{stackless();});
  61     ios.post([&]{did_something_else = true;});
  62
  63     ios.run();
  64
  65     BOOST_CHECK(did_something_else);
  66 }