asio/execution/bad_executor.hpp

0001 //
0002 // execution/bad_executor.hpp
0003 // ~~~~~~~~~~~~~~~~~~~~~~~~~~
0004 //
0005 // Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0008 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0009 //
0010
0011 #ifndef BOOST_ASIO_EXECUTION_BAD_EXECUTOR_HPP
0012 #define BOOST_ASIO_EXECUTION_BAD_EXECUTOR_HPP
0013
0014 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
0015 # pragma once
0016 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
0017
0018 #include <boost/asio/detail/config.hpp>
0019 #include <exception>
0020 #include <boost/asio/detail/push_options.hpp>
0021
0022 namespace boost {
0023 namespace asio {
0024 namespace execution {
0025
0026 /// Exception thrown when trying to access an empty polymorphic executor.
0027 class bad_executor
0028   : public std::exception
0029 {
0030 public:
0031   /// Constructor.
0032   BOOST_ASIO_DECL bad_executor() noexcept;
0033
0034   /// Obtain message associated with exception.
0035   BOOST_ASIO_DECL virtual const char* what() const noexcept;
0036 };
0037
0038 } // namespace execution
0039 } // namespace asio
0040 } // namespace boost
0041
0042 #include <boost/asio/detail/pop_options.hpp>
0043
0044 #if defined(BOOST_ASIO_HEADER_ONLY)
0045 # include <boost/asio/execution/impl/bad_executor.ipp>
0046 #endif // defined(BOOST_ASIO_HEADER_ONLY)
0047
0048 #endif // BOOST_ASIO_EXECUTION_BAD_EXECUTOR_HPP