libigl/include/igl/get_seconds.h

// This file is part of libigl, a simple c++ geometry processing library.
// 
// Copyright (C) 2013 Alec Jacobson <[email protected]>
// 
// This Source Code Form is subject to the terms of the Mozilla Public License 
// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
// obtain one at http://mozilla.org/MPL/2.0/.
#ifndef IGL_GET_SECONDS_H
#define IGL_GET_SECONDS_H
#include "igl_inline.h"

#define IGL_TICTOC_LAMBDA \
      const auto & tictoc = []() \
      { \
        static double t_start = igl::get_seconds(); \
        double diff = igl::get_seconds()-t_start; \
        t_start += diff; \
        return diff; \
      };

namespace igl
{
  /// Current time in seconds 
  ///
  /// @return the current time in seconds since epoch
  /// 
  /// #### Example:
  /// \code{cpp}
  ///    const auto & tictoc = []()
  ///    {
  ///      static double t_start = igl::get_seconds();
  ///      double diff = igl::get_seconds()-t_start;
  ///      t_start += diff;
  ///      return diff;
  ///    };
  ///    tictoc();
  ///    ... // part 1
  ///    cout<<"part 1: "<<tictoc()<<endl;
  ///    ... // part 2
  ///    cout<<"part 2: "<<tictoc()<<endl;
  ///    ... // etc
  /// \endcode
  IGL_INLINE double get_seconds();

}

#ifndef IGL_STATIC_LIBRARY
#  include "get_seconds.cpp"
#endif

#endif