3 // Copyright (C) 2009, 2010, 2011 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/>.
29 struct future_error_category : public std::error_category
31 future_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";
51 case std::future_errc::no_state:
52 __msg = "No associated state";
55 __msg = "Unknown error";
62 const future_error_category&
63 __future_category_instance()
65 static const future_error_category __fec;
70 namespace std _GLIBCXX_VISIBILITY(default)
72 _GLIBCXX_BEGIN_NAMESPACE_VERSION
74 const error_category& future_category()
75 { return __future_category_instance(); }
77 future_error::~future_error() throw() { }
80 future_error::what() const throw() { return _M_code.message().c_str(); }
82 __future_base::_Result_base::_Result_base() = default;
84 __future_base::_Result_base::~_Result_base() = default;
86 __future_base::_State_base::~_State_base() = default;
88 _GLIBCXX_END_NAMESPACE_VERSION
91 // XXX GLIBCXX_ABI Deprecated
93 // <future> export changes
94 #if defined(_GLIBCXX_SYMVER_GNU) && defined(PIC) \
95 && defined(_GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE) \
96 && defined(_GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT)
98 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
100 const std::error_category* future_category = &__future_category_instance();
103 #define _GLIBCXX_ASM_SYMVER(cur, old, version) \
104 asm (".symver " #cur "," #old "@@@" #version);
106 _GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx15future_categoryE, _ZSt15future_category, GLIBCXX_3.4.14)