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From: Robbie Morrison (robbie_at_[hidden])
Date: 2007-08-21 12:21:59
Hello all
My problem is similar to that discussed by Phil and Robert
Ramey on 'Boost - Users' back in 08-Feb-2007. Their thread
was titled "serialization stream error". Phil however did
not post back a follow up and it remains unclear as to whether
his difficulties were resolved or not. Moreover, these
discussions predate the 1.34.1 release on 24-Jul-2007 by
about five months. For my part, I have tried solving the
problem covered in this email using:
- Boost 1.33.1 from an Ubuntu package and dated 05-Dec-2005
- Boost 1.34.1 built from source under Ubuntu 6.10
I would like to get 'demo_shared_ptr.cpp' to run using XML
rather than text as the archive format -- as a precursor to
integrating this kind of code into an energy system
simulation.
I decided to use a step-by-step approach:
step 1 - build and run the original 'demo_shared_ptr.cpp'
using the original text archive format
- therefore, remove the leading A:: and B:: from
constructor and destructor definitions
- comment out the following (two places):
oa.register_type(static_cast<boost::detail::sp_counted_base_impl
<B *, boost::checked_deleter<B> > *>(NULL));
[as far as I could tell 'sp_counted_base_impl' no longer exists]
step 2 - add NVP statements while retaining the text
archive format for the time being
- therefore, swap over all archive calls, for instance:
// ar & x;
ar & boost::serialization::make_nvp("x", x);
step 3 - switch to the XML archive format
- duly change the following headers:
// #include <boost/archive/text_iarchive.hpp>
// #include <boost/archive/text_oarchive.hpp>
#include <boost/archive/xml_iarchive.hpp>
#include <boost/archive/xml_oarchive.hpp>
- duly change the archive objects:
// boost::archive::text_oarchive oa(ofs);
boost::archive::xml_oarchive oa(ofs);
Step 3 fails but only in the derived pointer code added by
David Tonge to 'demo_shared_ptr.cpp'.
A 'boost::STATIC_ASSERTION_FAILURE' is generated. Typical
error messages are given after the main body of this
posting.
At this point, I ran out of ideas. I have read the HTML
documentation and made my own notes and still can't see a
solution. Any assistance would be very gratefully received!
Note too that I only log on once per day so don't expect a
rapid turn-around for requests for details.
In addition, I will send diffs to the maintainer when I get
a satisfactory solution.
And, in passing, it is material to note that derived class B
does not fully archive its state and that there should
probably be an "ar & x" statement in its 'serialize'
definition.
For the record, here is my development environment:
os : Ubuntu 6.10, Linux 2.6.17-12-generic
hardware : Toshiba Tecra A2 330 laptop (purchased 27-Aug-2004)
specs : 1.4GHz Intel Celeron M (32-bit) / 512MiB RAM / 40GB HDD / 1024x76
gcc : gcc (GCC) 4.1.2 20060928 (prerelease) (Ubuntu 4.1.1-13ubuntu5)
I realize that this is not the latest release of Ubuntu, but
otherwise my system is fully current.
Lastly, I take it Boost.Serialization and TR1 shared
pointers (std::tr1::shared_ptr) remain incompatible at this
point in development.
Many thanks to Robert Ramey for developing Boost.Serialization.
It suits my needs to a tee, so I hope I can get this issue
resolved and move on with real coding.
best wishes
Robbie
---------------------------------
selected error messages
---------------------------------
/usr/local/include/boost-1_34_1/boost/archive/basic_xml_oarchive.hpp:
In member function 'void
boost::archive::basic_xml_oarchive<Archive>::save_override(T&, int)
[with T = const A, Archive = boost::archive::xml_oarchive]':
/usr/local/include/boost-1_34_1/boost/archive/detail/interface_oarchive.hpp:79:
instantiated from 'Archive&
boost::archive::detail::interface_oarchive<Archive>::operator<<(T&)
[with T = const A, Archive = boost::archive::xml_oarchive]'
/usr/local/include/boost-1_34_1/boost/archive/detail/interface_oarchive.hpp:87:
instantiated from 'Archive&
boost::archive::detail::interface_oarchive<Archive>::operator&(T&)
[with T = A, Archive = boost::archive::xml_oarchive]'
qdemo_shared_ptr.mod01.cpp:76:
instantiated from 'void B::serialize(Archive&, unsigned int) [with
Archive = boost::archive::xml_oarchive]'
/usr/local/include/boost-1_34_1/boost/serialization/access.hpp:109:
instantiated from 'static void
boost::serialization::access::serialize(Archive&, T&, unsigned int)
[with Archive = boost::archive::xml_oarchive, T = B]'
/usr/local/include/boost-1_34_1/boost/serialization/serialization.hpp:81:
instantiated from 'void boost::serialization::serialize(Archive&, T&,
unsigned int) [with Archive = boost::archive::xml_oarchive, T = B]'
/usr/local/include/boost-1_34_1/boost/serialization/serialization.hpp:140:
instantiated from 'void boost::serialization::serialize_adl(Archive&,
T&, unsigned int) [with Archive = boost::archive::xml_oarchive, T = B]'
/usr/local/include/boost-1_34_1/boost/archive/detail/oserializer.hpp:225:
instantiated from 'boost::archive::detail::pointer_oserializer<T,
Archive>::pointer_oserializer() [with T = B, Archive =
boost::archive::xml_oarchive]'
/usr/local/include/boost-1_34_1/boost/archive/detail/oserializer.hpp:197:
instantiated from 'const
boost::archive::detail::pointer_oserializer<B,
boost::archive::xml_oarchive>
boost::archive::detail::pointer_oserializer<B,
boost::archive::xml_oarchive>::instance'
/usr/local/include/boost-1_34_1/boost/archive/detail/oserializer.hpp:189:
instantiated from 'static const
boost::archive::detail::pointer_oserializer<T, Archive>&
boost::archive::detail::pointer_oserializer<T, Archive>::instantiate()
[with T = B, Archive = boost::archive::xml_oarchive]'
/usr/local/include/boost-1_34_1/boost/archive/detail/oserializer.hpp:514:
instantiated from 'const
boost::archive::detail::basic_pointer_oserializer&
boost::archive::detail::instantiate_pointer_oserializer(Archive*, T*)
[with Archive = boost::archive::xml_oarchive, T = B]'
/usr/local/include/boost-1_34_1/boost/archive/detail/interface_oarchive.hpp:59:
instantiated from 'const
boost::archive::detail::basic_pointer_oserializer*
boost::archive::detail::interface_oarchive<Archive>::register_type(const
T*) [with T = B, Archive = boost::archive::xml_oarchive]'
demo_shared_ptr.mod01.cpp:200: instantiated from here
/usr/local/include/boost-1_34_1/boost/archive/basic_xml_oarchive.hpp:83:
error: invalid application of 'sizeof' to incomplete type
'boost::STATIC_ASSERTION_FAILURE<false>'
---------------------------------
my modifications
---------------------------------
$ diff -u demo_shared_ptr.cpp demo_shared_ptr.mod01.cpp
--- demo_shared_ptr.cpp 2007-08-21 11:51:35.000000000 +0200
+++ demo_shared_ptr.mod01.cpp 2007-08-21 14:44:33.000000000 +0200
@@ -9,6 +9,21 @@
//
// See http://www.boost.org for updates, documentation, and revision history.
+// build : $ g++ -ggdb -Wall demo_shared_ptr.mod01.cpp
+// -lboost_serialization-gcc41 -o demo_shared_ptr
+// run : $ demo_shared_ptr
+
+// ---------------------------------------------------------
+// PREPROCESSOR DIRECTIVES
+// ---------------------------------------------------------
+
+// 0 = text, 1 = text with NPV statements, 2 = xml
+#define XEONA_ARCHIVE_MODE 2
+// 0 = omit DT code, 1 = use DT code
+#define DT_CODE 1
+
+// ---------------------------------------------------------
+
#include <iomanip>
#include <iostream>
#include <fstream>
@@ -17,15 +32,23 @@
#include <cstdio> // remove
#include <boost/config.hpp>
#if defined(BOOST_NO_STDC_NAMESPACE)
-namespace std{
+namespace std{
using ::remove;
}
#endif
-#include <boost/archive/text_oarchive.hpp>
-#include <boost/archive/text_iarchive.hpp>
+#if (XEONA_ARCHIVE_MODE >= 2)
+# include <boost/archive/xml_oarchive.hpp>
+# include <boost/archive/xml_iarchive.hpp>
+#else
+# include <boost/archive/text_oarchive.hpp>
+# include <boost/archive/text_iarchive.hpp>
+#endif
+
#include <boost/archive/tmpdir.hpp>
+//#include <boost/serialization/base_object.hpp> // base class serialization
+
#include <boost/serialization/shared_ptr.hpp>
///////////////////////////
@@ -37,12 +60,18 @@
int x;
template<class Archive>
void serialize(Archive & ar, const unsigned int /* file_version */){
- ar & x;
+
+#if (XEONA_ARCHIVE_MODE >= 1)
+ ar & boost::serialization::make_nvp("x", x);
+#else
+ ar & x;
+#endif
+
}
public:
static int count;
- A::A(){++count;} // default constructor
- virtual A::~A(){--count;} // default destructor
+ A(){++count;} // default constructor
+ virtual ~A(){--count;} // default destructor
};
BOOST_SERIALIZATION_SHARED_PTR(A)
@@ -56,12 +85,18 @@
int x;
template<class Archive>
void serialize(Archive & ar, const unsigned int /* file_version */){
- ar & boost::serialization::base_object<A>(*this);
+
+#if (XEONA_ARCHIVE_MODE >= 1)
+ ar & boost::serialization::base_object<A>(*this); // problem
+#else
+ ar & boost::serialization::base_object<A>(*this);
+#endif
+
}
public:
static int count;
- B::B() : A() {};
- virtual B::~B() {};
+ B() : A() {};
+ virtual ~B() {};
};
BOOST_SERIALIZATION_SHARED_PTR(B)
@@ -83,8 +118,30 @@
int main(int argc, char *argv[])
{
+ std::cout << std::endl;
+ std::cout << "xeona archive mode : "
+ << XEONA_ARCHIVE_MODE
+ << std::endl;
+
+ std::cout << "DT extension mode : "
+ << DT_CODE
+ << std::endl;
+
+#if (XEONA_ARCHIVE_MODE >= 2)
+ std::string ext = "xml";
+#else
+ std::string ext = "txt";
+#endif
+
std::string filename(boost::archive::tmpdir());
filename += "/testfile";
+ filename += ".";
+ filename += ext;
+
+ std::cout << "testfile : "
+ << filename
+ << "\n"
+ << std::endl;
// create a new shared pointer to ta new object of type A
boost::shared_ptr<A> spa(new A);
@@ -94,9 +151,21 @@
// serialize it
{
std::ofstream ofs(filename.c_str());
+
+#if (XEONA_ARCHIVE_MODE >= 2)
+ boost::archive::xml_oarchive oa(ofs);
+#else
boost::archive::text_oarchive oa(ofs);
+#endif
+
+#if (XEONA_ARCHIVE_MODE >= 1)
+ oa << boost::serialization::make_nvp("spa", spa);
+ oa << boost::serialization::make_nvp("spa1", spa1);
+#else
oa << spa;
oa << spa1;
+#endif
+
}
// reset the shared pointer to NULL
// thereby destroying the object of type A
@@ -108,17 +177,28 @@
{
// open the archive
std::ifstream ifs(filename.c_str());
+
+#if (XEONA_ARCHIVE_MODE >= 2)
+ boost::archive::xml_iarchive ia(ifs);
+#else
boost::archive::text_iarchive ia(ifs);
+#endif
- // restore the schedule from the archive
+#if (XEONA_ARCHIVE_MODE >= 1)
+ ia >> boost::serialization::make_nvp("spa", spa);
+ ia >> boost::serialization::make_nvp("spa1", spa1);
+#else
ia >> spa;
ia >> spa1;
+#endif
+
}
display(spa, spa1);
spa.reset();
spa1.reset();
- std::cout << std::endl;
+#if (DT_CODE >= 1)
+
std::cout << std::endl;
std::cout << "New tests" << std::endl;
@@ -131,17 +211,29 @@
// serialize it
{
std::ofstream ofs(filename.c_str());
+
+#if (XEONA_ARCHIVE_MODE >= 2)
+ boost::archive::xml_oarchive oa(ofs);
+#else
boost::archive::text_oarchive oa(ofs);
+#endif
oa.register_type(static_cast<B *>(NULL));
- oa.register_type(
- static_cast<
- boost::detail::sp_counted_base_impl<
- B *, boost::checked_deleter<B>
- > *
- >(NULL)
- );
+// oa.register_type(
+// static_cast<
+// boost::detail::sp_counted_base_impl<
+// B *, boost::checked_deleter<B>
+// > *
+// >(NULL)
+// );
+
+#if (XEONA_ARCHIVE_MODE >= 1)
+ oa << boost::serialization::make_nvp("spa", spa);
+ oa << boost::serialization::make_nvp("spa1", spa1);
+#else
oa << spa;
oa << spa1;
+#endif
+
}
// reset the shared pointer to NULL
// thereby destroying the object of type B
@@ -153,25 +245,40 @@
{
// open the archive
std::ifstream ifs(filename.c_str());
+
+#if (XEONA_ARCHIVE_MODE >= 2)
+ boost::archive::xml_iarchive ia(ifs);
+#else
boost::archive::text_iarchive ia(ifs);
+#endif
- // restore the schedule from the archive
ia.register_type(static_cast<B *>(NULL));
- ia.register_type(
- static_cast<
- boost::detail::sp_counted_base_impl<
- B *, boost::checked_deleter<B>
- > *
- >(NULL)
- );
+// ia.register_type(
+// static_cast<
+// boost::detail::sp_counted_base_impl<
+// B *, boost::checked_deleter<B>
+// > *
+// >(NULL)
+// );
+
+#if (XEONA_ARCHIVE_MODE >= 1)
+ ia >> boost::serialization::make_nvp("spa", spa);
+ ia >> boost::serialization::make_nvp("spa1", spa1);
+#else
ia >> spa;
ia >> spa1;
+#endif
+
}
display(spa, spa1);
+
+#endif // DT code
+
///////////////
- std::remove(filename.c_str());
+ // std::remove(filename.c_str());
// obj of type A gets destroyed
// as smart_ptr goes out of scope
return 0;
}
+
--- Robbie Morrison PhD student -- policy-oriented energy system simulation Institute for Energy Engineering (IET) Technical University of Berlin (TU-Berlin), Germany University email (redirected) : morrison_at_[hidden] Webmail (preferred) : robbie_at_[hidden] [from IMAP client]
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