Re: [Boost-users] serialization deserialization through the pointer

Subject: Re: [Boost-users] serialization deserialization through the pointer
From: Robert Ramey (ramey_at_[hidden])
Date: 2009-01-30 11:16:43

add friend class boost::serialization::access as described in the documentation.

Robert Ramey
  "niranjan bangera" <niranjannina_at_[hidden]> wrote in message news:50a2f6f20901300052l51828b3cp4e885df559ad4299_at_mail.gmail.com...
  hi all,

      i am facing some problem in my code. Please help me to tackle it. 

  BOOST Version : 1.36.0
  compliler  : gnu-gcc-/4.1.1-binutils-2.16.1/x86_64-pc-linux2.4/bin/gcc

  example of my prog:
   
  header:  

  my.h
  ----
  class my
  {

      int var1;
      int var2;
      structure object; // structure is the some other structure which is defined(i have defied the serialization function for this also...

  /*serialization function*/

      friend class boost::serialization::access;
      template<class Archive>
      void serialize(Archive & ar, const unsigned int file_version)
      {
          ar & var1;
          ar & var2;
          ar & object;
      }

  };

  mymain.cpp
  ----------
  #include "boost/archive/text_iarchive.hpp"
  #include "boost/archive/text_oarchive.hpp"
  #include "boost/serialization/access.hpp"
  #include "boost/serialization/serialization.hpp"
  #include "boost/serialization/collection_traits.hpp"
  #include "boost/serialization/utility.hpp"

  #include "my.h"

  class mymain
  {

  protected:

        my * ptr;

  public:
  void mytake_arch();

  void myretrive_arch();

  };

  void mymain::mytake_arch()
  {
  std::ofstream  ofs("filename");
           
          {    
              
              boost::archive::text_oarchive oa(ofs);
              oa << ptr;
          }
  }

  void mymain::myretrive_arch()
  {
              mymain *ptr = NULL; //// Confused in this, This is correct or wrong, if wront what else i can use
              std::ifstream ifs("filename");
              boost::archive::text_iarchive ia(ifs);
              ia >> ptr;
  }

  int main()
  {

  mymain obj;

  obj.mytake_arch();
  obj.myretrive_arch();

  }

  Problem:
  -------

      I have some confusion in retriving, Whether the way in which i retrieved is correct or wrong. Any other replacement or modification can be done for the retriving part(myretrive_arch() function). Please let me know. because the retrived ptr(pointer retrived) causes segmentation fault whenenver i use it for some other application.

  Any suggestions will be apprciated.

  Thanks,
  Niranjan

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