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+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// test_dll_plugin.cpp
+
+// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
+// Use, modification and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+// should pass compilation and execution
+
+// Note this test creates, serializes, and destroys
+// a class instance while knowing nothing more than its
+// exported class ID (GUID) and a base class from which
+// it is derived. This is referred to as a "plugin"
+// since the same program could, without recompilation,
+// manipulate any number of derived types - even those
+// which have not been yet been created.
+
+#include <fstream>
+
+#include <cstdio> // remove
+#include <boost/config.hpp>
+#if defined(BOOST_NO_STDC_NAMESPACE)
+namespace std{
+ using ::remove;
+}
+#endif
+
+#include <boost/archive/archive_exception.hpp>
+
+// for now, only test with simple text and polymorphic archive
+#include "test_tools.hpp"
+
+#include <boost/serialization/base_object.hpp>
+#include <boost/serialization/export.hpp>
+#include <boost/serialization/type_info_implementation.hpp>
+#include <boost/serialization/access.hpp>
+#include <boost/serialization/void_cast.hpp>
+#include <boost/serialization/extended_type_info.hpp>
+
+#include "polymorphic_base.hpp"
+
+// declare and implement a derived class in our own executable
+class polymorphic_derived1 : public polymorphic_base
+{
+ friend class boost::serialization::access;
+ template<class Archive>
+ void serialize(Archive &ar, const unsigned int /* file_version */){
+ ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(polymorphic_base);
+ }
+ const char * get_key() const{
+ return
+ boost::serialization::type_info_implementation<
+ polymorphic_derived1
+ >::type::get_const_instance().get_key();
+ }
+public:
+ virtual ~polymorphic_derived1(){}
+};
+
+// This class is derived from polymorphic_base which uses the no_rtti system
+// rather than the typeid system. This system uses the exported name as the
+// type identifier key. This MUST be exported!!!
+BOOST_CLASS_EXPORT(polymorphic_derived1)
+
+// MWerks users can do this to make their code work
+BOOST_SERIALIZATION_MWERKS_BASE_AND_DERIVED(polymorphic_base, polymorphic_derived1)
+
+// save exported polymorphic class
+void save_exported(const char *testfile)
+{
+ test_ostream os(testfile, TEST_STREAM_FLAGS);
+ test_oarchive oa(os, TEST_ARCHIVE_FLAGS);
+
+ polymorphic_base *rb1 = new polymorphic_derived1;
+
+ // get the eti record for the exported type "polymorphic_derived2"
+ boost::serialization::extended_type_info const * const d2_eti =
+ boost::serialization::extended_type_info::find(
+ "polymorphic_derived2"
+ );
+ assert(NULL != d2_eti);
+
+ // create a new instance of the type referred to by this record.
+ // in this example, we happen to know that the class constructor
+ // takes no arguments.
+ void const * const rd2 = d2_eti->construct();
+ assert(NULL != rd2);
+
+ // transform the pointer to a pointer to the base class
+ polymorphic_base const * const rb2
+ = static_cast<polymorphic_base const *>(
+ boost::serialization::void_upcast(
+ * d2_eti,
+ boost::serialization::type_info_implementation<polymorphic_base>
+ ::type::get_const_instance(),
+ rd2
+ )
+ );
+
+ // export will permit correct serialization
+ // through a pointer to a base class
+ oa << BOOST_SERIALIZATION_NVP(rb1);
+ oa << BOOST_SERIALIZATION_NVP(rb2);
+
+ // don't need these any more - don't leak memory
+ delete rb1;
+ // note delete original handle - not runtime cast one !!!
+ //delete rb2;
+ d2_eti->destroy(rd2);
+}
+
+// save exported polymorphic class
+void load_exported(const char *testfile)
+{
+ test_istream is(testfile, TEST_STREAM_FLAGS);
+ test_iarchive ia(is, TEST_ARCHIVE_FLAGS);
+
+ polymorphic_base *rb1 = NULL;
+ polymorphic_base *rb2 = NULL;
+
+ // export will permit correct serialization
+ // through a pointer to a base class
+ ia >> BOOST_SERIALIZATION_NVP(rb1);
+
+ BOOST_CHECK_MESSAGE(
+ boost::serialization::type_info_implementation<polymorphic_derived1>
+ ::type::get_const_instance()
+ ==
+ * boost::serialization::type_info_implementation<polymorphic_base>
+ ::type::get_const_instance().get_derived_extended_type_info(*rb1),
+ "restored pointer b1 not of correct type"
+ );
+ ia >> BOOST_SERIALIZATION_NVP(rb2);
+
+ // get the eti record for the exported type "polymorphic_derived2"
+ boost::serialization::extended_type_info const * const d2_eti =
+ boost::serialization::extended_type_info::find(
+ "polymorphic_derived2"
+ );
+ assert(NULL != d2_eti);
+
+ BOOST_CHECK_MESSAGE(
+ * d2_eti
+ ==
+ * boost::serialization::type_info_implementation<polymorphic_base>
+ ::type::get_const_instance().get_derived_extended_type_info(*rb2),
+ "restored pointer b2 not of correct type"
+ );
+
+ delete rb1;
+ delete rb2;
+}
+
+#ifdef BOOST_WINDOWS
+
+#define WIN32_LEAN_AND_MEAN
+#include <TCHAR.H>
+#include <windows.h>
+
+int
+test_main( int /* argc */, char* /* argv */[] )
+{
+ const char * testfile = boost::archive::tmpnam(NULL);
+ BOOST_REQUIRE(NULL != testfile);
+
+ HINSTANCE hDLL; // Handle to DLL
+ hDLL = LoadLibrary(_T("polymorphic_derived2.dll"));
+ BOOST_CHECK_MESSAGE(
+ (0 != hDLL),
+ "Failed to find/load polymorphic_derived2"
+ );
+ if(0 == hDLL)
+ return EXIT_FAILURE;
+
+ save_exported(testfile);
+ load_exported(testfile);
+ FreeLibrary(hDLL);
+
+ std::remove(testfile);
+ return EXIT_SUCCESS;
+}
+
+#else // presume *nix
+
+#include <dlfcn.h>
+
+int
+test_main( int /* argc */, char* /* argv */[] )
+{
+ const char * testfile = boost::archive::tmpnam(NULL);
+ BOOST_REQUIRE(NULL != testfile);
+
+ void * hDLL; // Handle to DLL
+ hDLL = dlopen("polymorphic_derived2.so", RTLD_NOW | RTLD_GLOBAL);
+ BOOST_CHECK_MESSAGE((0 != hDLL), "Failed to find/load plugin_polymorphic_derived2" );
+ BOOST_CHECK_MESSAGE((0 != hDLL), dlerror() );
+ if(0 == hDLL)
+ return EXIT_FAILURE;
+
+ save_exported(testfile);
+ load_exported(testfile);
+ dlclose(hDLL);
+
+ std::remove(testfile);
+ return EXIT_SUCCESS;
+}
+
+#endif
+
+// EOF