1// (C) Copyright 2008-10 Anthony Williams
2// (C) Copyright 2011-2012,2015 Vicente J. Botet Escriba
3//
4// Distributed under the Boost Software License, Version 1.0. (See
5// accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt)
7
8#ifndef BOOST_THREAD_FUTURES_FUTURE_ERROR_CODE_HPP
9#define BOOST_THREAD_FUTURES_FUTURE_ERROR_CODE_HPP
10
11#include <boost/thread/detail/config.hpp>
12#include <boost/core/scoped_enum.hpp>
13#include <boost/system/error_code.hpp>
14#include <boost/type_traits/integral_constant.hpp>
15
16namespace boost
17{
18
19 //enum class future_errc
20 BOOST_SCOPED_ENUM_DECLARE_BEGIN(future_errc)
21 {
22 broken_promise = 1,
23 future_already_retrieved,
24 promise_already_satisfied,
25 no_state
26 }
27 BOOST_SCOPED_ENUM_DECLARE_END(future_errc)
28
29 namespace system
30 {
31 template <>
32 struct BOOST_SYMBOL_VISIBLE is_error_code_enum< ::boost::future_errc> : public true_type {};
33
34 #ifdef BOOST_NO_CXX11_SCOPED_ENUMS
35 template <>
36 struct BOOST_SYMBOL_VISIBLE is_error_code_enum< ::boost::future_errc::enum_type> : public true_type { };
37 #endif
38 } // system
39
40 BOOST_THREAD_DECL
41 const system::error_category& future_category() BOOST_NOEXCEPT;
42
43 namespace system
44 {
45 inline
46 error_code
47 make_error_code(future_errc e) BOOST_NOEXCEPT
48 {
49 return error_code(underlying_cast<int>(e), boost::future_category());
50 }
51
52 inline
53 error_condition
54 make_error_condition(future_errc e) BOOST_NOEXCEPT
55 {
56 return error_condition(underlying_cast<int>(e), boost::future_category());
57 }
58 } // system
59} // boost
60
61#endif // header
62