RefCount.hpp

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00001 /*******************************************************************************
00002 * Copyright (C) 2004 Vintela, Inc. All rights reserved.
00003 * Copyright (C) 2005 Novell, Inc. All rights reserved.
00004 *
00005 * Redistribution and use in source and binary forms, with or without
00006 * modification, are permitted provided that the following conditions are met:
00007 *
00008 *  - Redistributions of source code must retain the above copyright notice,
00009 *    this list of conditions and the following disclaimer.
00010 *
00011 *  - Redistributions in binary form must reproduce the above copyright notice,
00012 *    this list of conditions and the following disclaimer in the documentation
00013 *    and/or other materials provided with the distribution.
00014 *
00015 *  - Neither the name of Vintela, Inc., Novell, Inc., nor the names of its
00016 *    contributors may be used to endorse or promote products derived from this
00017 *    software without specific prior written permission.
00018 *
00019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
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00031 
00032 
00037 #ifndef BLOCXX_REF_COUNT_HPP_
00038 #define BLOCXX_REF_COUNT_HPP_
00039 #include "blocxx/BLOCXX_config.h"
00040 #include "blocxx/AtomicOps.hpp"
00041 
00042 // The classes and functions defined in this file are not meant for general
00043 // use, they are internal implementation details.  They may change at any time.
00044 
00045 namespace BLOCXX_NAMESPACE
00046 {
00047 
00049 class BLOCXX_COMMON_API RefCount
00050 {
00051 public:
00052    RefCount()
00053       : m_count(1)
00054    {
00055    }
00056    RefCount(Atomic_t c)
00057       : m_count(c)
00058    {
00059    }
00060    void inc()
00061    {
00062       AtomicInc(m_count);
00063    }
00064    bool decAndTest()
00065    {
00066       return AtomicDecAndTest(m_count);
00067    }
00068    int get() const
00069    {
00070       return AtomicGet(m_count);
00071    }
00072 private:
00073    Atomic_t m_count;
00074 };
00075 
00076 } // end namespace BLOCXX_NAMESPACE
00077 
00078 #endif

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