1 //
2 // execution/bad_executor.hpp
3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~
4 //
5 // Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
6 //
7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
9 //
10 
11 #ifndef BOOST_ASIO_EXECUTION_BAD_EXECUTOR_HPP
12 #define BOOST_ASIO_EXECUTION_BAD_EXECUTOR_HPP
13 
14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
15 # pragma once
16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
17 
18 #include <boost/asio/detail/config.hpp>
19 #include <exception>
20 #include <boost/asio/detail/push_options.hpp>
21 
22 namespace boost {
23 namespace asio {
24 namespace execution {
25 
26 /// Exception thrown when trying to access an empty polymorphic executor.
27 class bad_executor
28   : public std::exception
29 {
30 public:
31   /// Constructor.
32   BOOST_ASIO_DECL bad_executor() BOOST_ASIO_NOEXCEPT;
33 
34   /// Obtain message associated with exception.
35   BOOST_ASIO_DECL virtual const char* what() const
36     BOOST_ASIO_NOEXCEPT_OR_NOTHROW;
37 };
38 
39 } // namespace execution
40 } // namespace asio
41 } // namespace boost
42 
43 #include <boost/asio/detail/pop_options.hpp>
44 
45 #if defined(BOOST_ASIO_HEADER_ONLY)
46 # include <boost/asio/execution/impl/bad_executor.ipp>
47 #endif // defined(BOOST_ASIO_HEADER_ONLY)
48 
49 #endif // BOOST_ASIO_EXECUTION_BAD_EXECUTOR_HPP
50