Hi,
I’m
very sorry to post the message hereafter a second time, but I’ve not received
any reply, maybe I’ve missed it.
Any
workaround or recommendations will be welcome because we are right now
surrounded in our software development.
Thanks
in advance.
Marc
VIALA
After
few hour on the subject, I’m would like to have some explanations &
recommendations one the boost serialization library. To explain, my problem,
you will find hereafter a VC++ 7.1 project that demonstrates it.
Problem
Description
We
have involved in a large project with for example two DLLs libraries: LibA and
LibB. These libraries define & implement one
class, let’s say libA::A and libB::B. These two classes can be serialized through boost
serialization engine.
The
interfaces for the two classes are the same:
----------------------
struct
LIBA_API A
{
std::vector<double> my_vector
;
private:
friend class
boost::serialization::access;
template<class Archive>
void save(Archive & ar, const
unsigned int version) const
;
template<class Archive>
void load(Archive & ar, const
unsigned int version) ;
BOOST_SERIALIZATION_SPLIT_MEMBER()
};
LIBA_API
void save(const libA::A* pObj, std::ostream& os) ;
LIBA_API
void load(libA::A* &pObj, std::istream& is)
;
};
// Namespace libA
----------------------
The
two free functions save() and load() are defined to
be able to serialize the class libA::A (respectively
the class libB::B).
When,
we try to use these interfaces in an EXE
application:
----------------------
#include
<LibA/A.h>
#include
<LibB/B.h>
#include
<boost/filesystem/path.hpp>
#include
<boost/filesystem/fstream.hpp>
#pragma comment(lib, "liba_d.lib")
#pragma comment(lib, "libb_d.lib")
int
main(int
argc, char* argv[])
{
libA::A a;
libA::save(&a, boost::filesystem::ofstream("a.xml"));
libB::B b;
libB::save(&b, boost::filesystem::ofstream("b.xml")); // -> Assert in debug
mode
return
0;
}
----------------------
The
figure hereafter describes the relationships between LibA, LibB and EXE
application:
------------
------------
|
LibA |
|
LibB
|
------------
------------
\
/
\
/
Exe Application
We
have to face to an assert in debug mode generate by the file boost::serialization::extended_type_info.cpp, line#71.
This assert happens during the instance serialization of class libB:B.
Recently,
there are some posts on this subject, but I would like to known how I can deal
with this assert? Is it possible to avoid it by a code organisation? Is it
possible to comment this assert?
To
have a concrete answer, I have joined my complete VC++7.1 project.
Thanks
in advance for your help.
Development
Platform
WindowsXP
VC++
7.1
Boost
1.33.1
Marc
Viala
mailto:mviala@acticm.com