// file      : odb/details/buffer.cxx
// author    : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
// license   : GNU GPL v2; see accompanying LICENSE file

#include <cstring> // std::memcpy

#include <odb/details/buffer.hxx>

using namespace std;

namespace odb
{
  namespace details
  {
    void buffer::
    capacity (size_t c, size_t data_size)
    {
      if (c > capacity_)
      {
        size_t n (capacity_ * 2 > c ? capacity_ * 2 : c);
        char* d (static_cast<char*> (operator new (n)));

        if (data_ != 0)
        {
          if (data_size != 0)
            memcpy (d, data_, data_size);

          operator delete (data_);
        }

        data_ = d;
        capacity_ = n;
      }
    }
  }
}