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// future -*- C++ -*- |
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// Copyright (C) 2009-2013 Free Software Foundation, Inc. |
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// |
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// This file is part of the GNU ISO C++ Library. This library is free |
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// software; you can redistribute it and/or modify it under the |
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// terms of the GNU General Public License as published by the |
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// Free Software Foundation; either version 3, or (at your option) |
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// any later version. |
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// This library is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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// GNU General Public License for more details. |
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// Under Section 7 of GPL version 3, you are granted additional |
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// permissions described in the GCC Runtime Library Exception, version |
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// 3.1, as published by the Free Software Foundation. |
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// You should have received a copy of the GNU General Public License and |
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// a copy of the GCC Runtime Library Exception along with this program; |
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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// . |
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#include |
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namespace |
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{ |
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struct future_error_category : public std::error_category |
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{ |
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virtual const char* |
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name() const noexcept |
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{ return "future"; } |
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virtual std::string message(int __ec) const |
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{ |
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std::string __msg; |
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switch (std::future_errc(__ec)) |
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{ |
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case std::future_errc::broken_promise: |
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__msg = "Broken promise"; |
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break; |
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case std::future_errc::future_already_retrieved: |
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__msg = "Future already retrieved"; |
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break; |
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case std::future_errc::promise_already_satisfied: |
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__msg = "Promise already satisfied"; |
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break; |
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case std::future_errc::no_state: |
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__msg = "No associated state"; |
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break; |
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default: |
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__msg = "Unknown error"; |
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break; |
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} |
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return __msg; |
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} |
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}; |
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const future_error_category& |
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__future_category_instance() noexcept |
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{ |
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static const future_error_category __fec{}; |
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return __fec; |
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} |
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} |
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namespace std _GLIBCXX_VISIBILITY(default) |
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{ |
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_GLIBCXX_BEGIN_NAMESPACE_VERSION |
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const error_category& future_category() noexcept |
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{ return __future_category_instance(); } |
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future_error::~future_error() noexcept { } |
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const char* |
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future_error::what() const noexcept { return _M_code.message().c_str(); } |
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#if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) \ |
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&& (ATOMIC_INT_LOCK_FREE > 1) |
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__future_base::_Result_base::_Result_base() = default; |
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__future_base::_Result_base::~_Result_base() = default; |
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__future_base::_State_base::~_State_base() = default; |
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#endif |
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_GLIBCXX_END_NAMESPACE_VERSION |
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} // namespace std |