76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
// future -*- C++ -*-
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// Copyright (C) 2009, 2010 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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// <http://www.gnu.org/licenses/>.
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#include <future>
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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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future_error_category() {}
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virtual const char*
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name() const
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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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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()
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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
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{
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const error_category* const future_category = &__future_category_instance();
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future_error::~future_error() throw() { }
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const char*
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future_error::what() const throw() { return _M_code.message().c_str(); }
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}
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