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Diffstat (limited to 'src/boost/libs/serialization/performance/performance_no_rtti.cpp')
| -rw-r--r-- | src/boost/libs/serialization/performance/performance_no_rtti.cpp | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/src/boost/libs/serialization/performance/performance_no_rtti.cpp b/src/boost/libs/serialization/performance/performance_no_rtti.cpp new file mode 100644 index 000000000..bebafe783 --- /dev/null +++ b/src/boost/libs/serialization/performance/performance_no_rtti.cpp @@ -0,0 +1,222 @@ +/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 +// test_no_rtti.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) + +// note: this program tests the inter-operability of different +// extended typeinfo systems. In this example, one class is +// identified using the default RTTI while the other uses a custom +// system based on the export key. +// +// As this program uses RTTI for one of the types, the test will fail +// on a system for which RTTI is not enabled or not existent. + +#include <fstream> + +#include <cstdio> // remove +#include <boost/config.hpp> +#if defined(BOOST_NO_STDC_NAMESPACE) +namespace std{ + using ::remove; +} +#endif + +#include <boost/static_assert.hpp> +#include <boost/type_traits/is_same.hpp> + +#include <boost/archive/archive_exception.hpp> +#include "../test/test_tools.hpp" +#include <boost/preprocessor/stringize.hpp> +// #include <boost/preprocessor/cat.hpp> +// the following fails with (only!) gcc 3.4 +// #include BOOST_PP_STRINGIZE(BOOST_PP_CAT(../test/,BOOST_ARCHIVE_TEST)) +// just copy over the files from the test directory +#include BOOST_PP_STRINGIZE(BOOST_ARCHIVE_TEST) + +#include <boost/serialization/nvp.hpp> +#include <boost/serialization/base_object.hpp> +#include <boost/serialization/export.hpp> +#include <boost/serialization/type_info_implementation.hpp> +#include <boost/serialization/extended_type_info_no_rtti.hpp> + +class polymorphic_base +{ + friend class boost::serialization::access; + template<class Archive> + void serialize(Archive & /* ar */, const unsigned int /* file_version */){ + } +public: + virtual const char * get_key() const = 0; + virtual ~polymorphic_base(){}; +}; + +BOOST_IS_ABSTRACT(polymorphic_base) +BOOST_CLASS_TYPE_INFO( + polymorphic_base, + extended_type_info_no_rtti<polymorphic_base> +) +// note: types which use ...no_rtti MUST be exported +BOOST_CLASS_EXPORT(polymorphic_base) + +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); + } +public: + virtual const char * get_key() const ; +}; + +BOOST_CLASS_TYPE_INFO( + polymorphic_derived1, + extended_type_info_no_rtti<polymorphic_derived1> +) +BOOST_CLASS_EXPORT(polymorphic_derived1) + +const char * polymorphic_derived1::get_key() const { + const boost::serialization::extended_type_info *eti + = boost::serialization::type_info_implementation<polymorphic_derived1> + ::type::get_instance(); + return eti->get_key(); +} + +class polymorphic_derived2 : 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); + } +public: + virtual const char * get_key() const ; +}; + +// note the mixing of type_info systems is supported. +BOOST_CLASS_TYPE_INFO( + polymorphic_derived2, + boost::serialization::extended_type_info_typeid<polymorphic_derived2> +) + +BOOST_CLASS_EXPORT(polymorphic_derived2) + +const char * polymorphic_derived2::get_key() const { + // use the exported key as the identifier + const boost::serialization::extended_type_info *eti + = boost::serialization::type_info_implementation<polymorphic_derived2> + ::type::get_instance(); + return eti->get_key(); +} + +// save derived polymorphic class +void save_derived(const char *testfile) +{ + test_ostream os(testfile, TEST_STREAM_FLAGS); + test_oarchive oa(os, TEST_ARCHIVE_FLAGS); + + polymorphic_derived1 *rd1 = new polymorphic_derived1; + polymorphic_derived2 *rd2 = new polymorphic_derived2; + + oa << BOOST_SERIALIZATION_NVP(rd1); + oa << BOOST_SERIALIZATION_NVP(rd2); + + // the above opereration registers the derived classes as a side + // effect. Hence, instances can now be correctly serialized through + // a base class pointer. + polymorphic_base *rb1 = rd1; + polymorphic_base *rb2 = rd2; + oa << BOOST_SERIALIZATION_NVP(rb1); + oa << BOOST_SERIALIZATION_NVP(rb2); + + delete rd1; + delete rd2; +} + +// save derived polymorphic class +void load_derived(const char *testfile) +{ + test_istream is(testfile, TEST_STREAM_FLAGS); + test_iarchive ia(is, TEST_ARCHIVE_FLAGS); + + polymorphic_derived1 *rd1 = NULL; + polymorphic_derived2 *rd2 = NULL; + + ia >> BOOST_SERIALIZATION_NVP(rd1); + + BOOST_CHECK_MESSAGE( + boost::serialization::type_info_implementation<polymorphic_derived1> + ::type::get_instance() + == boost::serialization::type_info_implementation<polymorphic_derived1> + ::type::get_derived_extended_type_info(*rd1), + "restored pointer d1 not of correct type" + ); + + ia >> BOOST_SERIALIZATION_NVP(rd2); + + BOOST_CHECK_MESSAGE( + boost::serialization::type_info_implementation<polymorphic_derived2> + ::type::get_instance() + == boost::serialization::type_info_implementation<polymorphic_derived2> + ::type::get_derived_extended_type_info(*rd2), + "restored pointer d2 not of correct type" + ); + + polymorphic_base *rb1 = NULL; + polymorphic_base *rb2 = NULL; + + // the above opereration registers the derived classes as a side + // effect. Hence, instances can now be correctly serialized through + // a base class pointer. + ia >> BOOST_SERIALIZATION_NVP(rb1); + + BOOST_CHECK_MESSAGE( + rb1 == dynamic_cast<polymorphic_base *>(rd1), + "serialized pointers not correctly restored" + ); + + BOOST_CHECK_MESSAGE( + boost::serialization::type_info_implementation<polymorphic_derived1> + ::type::get_instance() + == boost::serialization::type_info_implementation<polymorphic_base> + ::type::get_derived_extended_type_info(*rb1), + "restored pointer b1 not of correct type" + ); + + ia >> BOOST_SERIALIZATION_NVP(rb2); + + BOOST_CHECK_MESSAGE( + rb2 == dynamic_cast<polymorphic_base *>(rd2), + "serialized pointers not correctly restored" + ); + + BOOST_CHECK_MESSAGE( + boost::serialization::type_info_implementation<polymorphic_derived2> + ::type::get_instance() + == boost::serialization::type_info_implementation<polymorphic_base> + ::type::get_derived_extended_type_info(*rb2), + "restored pointer b2 not of correct type" + ); + + delete rb1; + delete rb2; +} + +int +test_main( int /* argc */, char* /* argv */[] ) +{ + const char * testfile = boost::archive::tmpnam(NULL); + + BOOST_REQUIRE(NULL != testfile); + + save_derived(testfile); + load_derived(testfile); + + std::remove(testfile); + return EXIT_SUCCESS; +} + +// EOF |