3 // Copyright (C) 2009 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
27 #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) \
28 && defined(_GLIBCXX_ATOMIC_BUILTINS_4)
31 struct future_error_category : public std::error_category
37 virtual std::string message(int __ec) const
40 switch (std::future_errc(__ec))
42 case std::future_errc::broken_promise:
43 __msg = "Broken promise";
45 case std::future_errc::future_already_retrieved:
46 __msg = "Future already retrieved";
48 case std::future_errc::promise_already_satisfied:
49 __msg = "Promise already satisfied";
52 __msg = "Unknown error";
59 const future_error_category&
60 __future_category_instance()
62 static const future_error_category __fec;
69 const error_category* const future_category = &__future_category_instance();
71 future_error::~future_error() throw() { }
74 future_error::what() const throw() { return _M_code.message().c_str(); }
77 #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1
78 // && _GLIBCXX_ATOMIC_BUILTINS_4