Re: [Boost-users] Serialization of boost::shared_ptr - wrong ref. count?

Subject: Re: [Boost-users] Serialization of boost::shared_ptr - wrong ref. count?
From: Josef Uher (josef.uher_at_[hidden])
Date: 2015-04-15 01:50:15

Hi Robert,

Thank you for checking it. I tried your modification and it does the same thing on my computer. Still use count two. It is really very strange.

If you say that you are running the latest version of the serialization library, do you mean the one from boost 1.57 or already 1.58?

Cheers,
Josef

> On 14 Apr 2015, at 06:21, Robert Ramey <ramey_at_[hidden]> wrote:
> 
> I ran a modified version of this program on my Mac OS system and it worked as
> I would expect.  I'm running the latest version of the serialization library
> 
> Robert Ramey
> 
> my version:
> 
> //#include <boost/iostreams/device/file_descriptor.hpp>
> //#include <boost/iostreams/filtering_stream.hpp>
> #include <fstream>
> #include "test_tools.hpp"
> #include <boost/archive/xml_iarchive.hpp>
> #include <boost/archive/xml_oarchive.hpp>
> #include <boost/serialization/shared_ptr.hpp>
> #include <boost/make_shared.hpp>
> 
> class SOBJ {
> public:
>    friend class boost::serialization::access;
>    virtual void SerializationHelperFcn() {}
>    SOBJ() {
>        std::cout << "SOBJ Constructor" << std::endl;
>    }
> 
>    virtual ~SOBJ() {
>        std::cout << "SOBJ Destructor" << std::endl;
>    }
>    double value=0.;
>    template<typename Archive> void serialize(Archive &ar, const unsigned
> int ver) {
>        ar & boost::serialization::make_nvp("value", value);
>    }
> };
> 
> void shared_ptr_serialization_test() {
>    const char * testfile = boost::archive::tmpnam(NULL);
>    boost::shared_ptr<SOBJ> out=boost::make_shared<SOBJ>();
> 
>    {
>        //boost::iostreams::filtering_ostream ofs;
> 
> //ofs.push(boost::iostreams::file_descriptor_sink("/Users/juhe/stest.xml"));
>        std::ofstream ofs(testfile);
>        boost::archive::xml_oarchive oa(ofs);
>        oa << boost::serialization::make_nvp("tag", out);
>    }
> 
>    boost::shared_ptr<SOBJ> in=nullptr;
> 
>    {
> //        boost::iostreams::filtering_istream ifs;
> //       
> ifs.push(boost::iostreams::file_descriptor_source("/Users/juhe/stest.xml"));
>        std::ifstream ifs(testfile);
>        boost::archive::xml_iarchive ia(ifs);
>        ia >> boost::serialization::make_nvp("tag", in);
>    }
> 
>    std::cout << "out.use_count()=" << out.use_count() << std::endl;
>    std::cout << "in.use_count() =" << in.use_count() << std::endl;
> }
> 
> int test_main(int argc, char * argv[]){
>    shared_ptr_serialization_test();
>    return 0;
> }
> /raw>
> 
> 
> 
> --
> View this message in context: http://boost.2283326.n4.nabble.com/Serialization-of-boost-shared-ptr-wrong-ref-count-tp4674427p4674440.html
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