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QxOrm
1.4.3
C++ Object Relational Mapping library
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00001 /**************************************************************************** 00002 ** 00003 ** http://www.qxorm.com/ 00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com) 00005 ** 00006 ** This file is part of the QxOrm library 00007 ** 00008 ** This software is provided 'as-is', without any express or implied 00009 ** warranty. In no event will the authors be held liable for any 00010 ** damages arising from the use of this software 00011 ** 00012 ** Commercial Usage 00013 ** Licensees holding valid commercial QxOrm licenses may use this file in 00014 ** accordance with the commercial license agreement provided with the 00015 ** Software or, alternatively, in accordance with the terms contained in 00016 ** a written agreement between you and Lionel Marty 00017 ** 00018 ** GNU General Public License Usage 00019 ** Alternatively, this file may be used under the terms of the GNU 00020 ** General Public License version 3.0 as published by the Free Software 00021 ** Foundation and appearing in the file 'license.gpl3.txt' included in the 00022 ** packaging of this file. Please review the following information to 00023 ** ensure the GNU General Public License version 3.0 requirements will be 00024 ** met : http://www.gnu.org/copyleft/gpl.html 00025 ** 00026 ** If you are unsure which license is appropriate for your use, or 00027 ** if you have questions regarding the use of this file, please contact : 00028 ** contact@qxorm.com 00029 ** 00030 ****************************************************************************/ 00031 00032 #ifdef _QX_ENABLE_BOOST_SERIALIZATION 00033 #ifndef _QX_SERIALIZE_QSHAREDPOINTER_H_ 00034 #define _QX_SERIALIZE_QSHAREDPOINTER_H_ 00035 00036 #ifdef _MSC_VER 00037 #pragma once 00038 #endif 00039 00040 #include <boost/serialization/serialization.hpp> 00041 #include <boost/serialization/split_free.hpp> 00042 #include <boost/serialization/version.hpp> 00043 #include <boost/serialization/nvp.hpp> 00044 00045 #include <QtCore/qsharedpointer.h> 00046 #include <QtCore/QWeakPointer> 00047 #include <QtCore/qhash.h> 00048 00049 namespace boost { 00050 namespace serialization { 00051 00052 template <class Archive, typename T> 00053 inline void save(Archive & ar, const QSharedPointer<T> & t, const unsigned int file_version) 00054 { 00055 Q_UNUSED(file_version); 00056 const T * ptr = t.data(); 00057 ar << boost::serialization::make_nvp("qt_shared_ptr", ptr); 00058 } 00059 00060 template <class Archive, typename T> 00061 inline void load(Archive & ar, QSharedPointer<T> & t, const unsigned int file_version) 00062 { 00063 Q_UNUSED(file_version); 00064 static QHash<void *, QWeakPointer<T> > listOfWeakPointers; 00065 T * ptr = NULL; ar >> boost::serialization::make_nvp("qt_shared_ptr", ptr); 00066 if (! ptr) { t = QSharedPointer<T>(); return; } 00067 00068 void * pVoid = static_cast<void *>(ptr); 00069 QSharedPointer<T> pShared = (listOfWeakPointers.contains(pVoid) ? listOfWeakPointers.value(pVoid).toStrongRef() : QSharedPointer<T>()); 00070 if (pShared) { t = pShared; return; } 00071 t = QSharedPointer<T>(ptr); 00072 QWeakPointer<T> pWeak = t; 00073 listOfWeakPointers.insert(pVoid, pWeak); 00074 00075 static int iLoadCount = 0; 00076 iLoadCount++; if (iLoadCount <= 1000) { return; } 00077 QMutableHashIterator<void *, QWeakPointer<T> > itr(listOfWeakPointers); 00078 while (itr.hasNext()) { itr.next(); if (itr.value().isNull()) { itr.remove(); } } 00079 iLoadCount = 0; 00080 } 00081 00082 template <class Archive, typename T> 00083 inline void serialize(Archive & ar, QSharedPointer<T> & t, const unsigned int file_version) 00084 { 00085 boost::serialization::split_free(ar, t, file_version); 00086 } 00087 00088 } // namespace boost 00089 } // namespace serialization 00090 00091 #endif // _QX_SERIALIZE_QSHAREDPOINTER_H_ 00092 #endif // _QX_ENABLE_BOOST_SERIALIZATION