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3rdparty/websocketpp-0.8.2/websocketpp/common/chrono.hpp 2.65 KB
73ef4ff3   Hu Chunming   提交三方库
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  /*
   * Copyright (c) 2015, Peter Thorson. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *     * Redistributions of source code must retain the above copyright
   *       notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above copyright
   *       notice, this list of conditions and the following disclaimer in the
   *       documentation and/or other materials provided with the distribution.
   *     * Neither the name of the WebSocket++ Project nor the
   *       names of its contributors may be used to endorse or promote products
   *       derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   */
  
  #ifndef WEBSOCKETPP_COMMON_CHRONO_HPP
  #define WEBSOCKETPP_COMMON_CHRONO_HPP
  
  #include <websocketpp/common/cpp11.hpp>
  
  // If we've determined that we're in full C++11 mode and the user hasn't
  // explicitly disabled the use of C++11 functional header, then prefer it to
  // boost.
  #if defined _WEBSOCKETPP_CPP11_INTERNAL_ && !defined _WEBSOCKETPP_NO_CPP11_CHRONO_
      #ifndef _WEBSOCKETPP_CPP11_CHRONO_
          #define _WEBSOCKETPP_CPP11_CHRONO_
      #endif
  #endif
  
  // If we're on Visual Studio 2012 or higher and haven't explicitly disabled
  // the use of C++11 chrono header then prefer it to boost.
  #if defined(_MSC_VER) && _MSC_VER >= 1700 && !defined _WEBSOCKETPP_NO_CPP11_CHRONO_
      #ifndef _WEBSOCKETPP_CPP11_CHRONO_
          #define _WEBSOCKETPP_CPP11_CHRONO_
      #endif
  #endif
  
  #ifdef _WEBSOCKETPP_CPP11_CHRONO_
      #include <chrono>
  #else
      #include <boost/chrono.hpp>
  #endif
  
  namespace websocketpp {
  namespace lib {
  
  #ifdef _WEBSOCKETPP_CPP11_CHRONO_
      namespace chrono = std::chrono;
  #else
      namespace chrono = boost::chrono;
  #endif
  
  } // namespace lib
  } // namespace websocketpp
  
  #endif // WEBSOCKETPP_COMMON_CHRONO_HPP