114 lines
2.4 KiB
C++
114 lines
2.4 KiB
C++
//
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// VMime library (http://www.vmime.org)
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// Copyright (C) 2002-2013 Vincent Richard <vincent@vmime.org>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 3 of
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// the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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// Linking this library statically or dynamically with other modules is making
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// a combined work based on this library. Thus, the terms and conditions of
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// the GNU General Public License cover the whole combination.
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//
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#ifndef VMIME_UTILITY_SMARTPTRIMPL_HPP_INCLUDED
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#define VMIME_UTILITY_SMARTPTRIMPL_HPP_INCLUDED
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#include "vmime/config.hpp"
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#include "vmime/utility/smartPtr.hpp"
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#if defined(_WIN32)
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# include <windows.h>
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#elif defined(VMIME_HAVE_PTHREAD)
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# include <pthread.h>
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#endif
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namespace vmime {
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namespace utility {
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/** Reference counter for shared pointers.
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*/
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class refCounter
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{
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public:
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refCounter(const long initialValue);
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~refCounter();
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long increment();
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long decrement();
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operator long() const;
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private:
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#if defined(_WIN32)
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long m_value;
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#elif defined(__GNUC__) && (defined(__GLIBCPP__) || defined(__GLIBCXX__))
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mutable volatile int m_value;
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#elif defined (VMIME_HAVE_PTHREAD)
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volatile long m_value;
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pthread_mutex_t m_mutex;
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#else // not thread-safe implementation
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long m_value;
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#endif
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};
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/** Separate implementation of refManager, to avoid polluting global
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* namespace with system-specific inclusions/definitions.
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*/
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class refManagerImpl : public refManager
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{
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public:
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refManagerImpl(object* obj);
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~refManagerImpl();
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bool addStrong();
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void releaseStrong();
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void addWeak();
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void releaseWeak();
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object* getObject();
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long getStrongRefCount() const;
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long getWeakRefCount() const;
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private:
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void deleteManager();
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void deleteObject();
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object* m_object;
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refCounter m_strongCount;
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refCounter m_weakCount;
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};
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} // utility
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} // vmime
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#endif // VMIME_UTILITY_SMARTPTRIMPL_HPP_INCLUDED
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