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/post.hpp>
  19 #include <boost/asio/spawn.hpp>
  20 #include <boost/asio/coroutine.hpp>
  21 #include <boost/asio/use_future.hpp>
  22 #include <boost/asio/yield.hpp>
  23
  24 #include <vector>
  25 #include <array>
  26 BOOST_AUTO_TEST_SUITE( async );
  27
  28 namespace bp = boost::process;
  29 BOOST_AUTO_TEST_CASE(stackless, *boost::unit_test::timeout(15))
  30 {
  31     using boost::unit_test::framework::master_test_suite;
  32
  33     boost::asio::io_context ios;
  34
  35     bool did_something_else = false;
  36
  37     struct stackless_t : boost::asio::coroutine
  38     {
  39         boost::asio::io_context & ios;
  40         bool & did_something_else;
  41
  42         stackless_t(boost::asio::io_context & ios_,
  43                     bool & did_something_else)
  44                         : ios(ios_), did_something_else(did_something_else) {}
  45         void operator()(
  46                 boost::system::error_code ec = boost::system::error_code(),
  47                 std::size_t exit_code = 0)
  48         {
  49             if (!ec) reenter (this)
  50             {
  51                 yield bp::async_system(
  52                         ios, *this,
  53                         master_test_suite().argv[1],
  54                         "test", "--exit-code", "42");
  55
  56                 BOOST_CHECK_EQUAL(exit_code, 42u);
  57                 BOOST_CHECK(did_something_else);
  58             }
  59         }
  60     } stackless{ios, did_something_else};
  61
  62     boost::asio::post(ios.get_executor(), [&]{stackless();});
  63     boost::asio::post(ios.get_executor(), [&]{did_something_else = true;});
  64
  65     ios.run();
  66
  67     BOOST_CHECK(did_something_else);
  68 }
  69
  70
  71 BOOST_AUTO_TEST_SUITE_END();