blocxx

RefCount.hpp

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00001 /*******************************************************************************
00002 * Copyright (C) 2005, Vintela, Inc. All rights reserved.
00003 * Copyright (C) 2006, 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:
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00008 *     * Redistributions of source code must retain the above copyright notice,
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00014 *       Vintela, Inc., 
00015 *       nor Novell, Inc., 
00016 *       nor the names of its contributors or employees may be used to 
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00020 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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00032 
00033 
00038 #ifndef BLOCXX_REF_COUNT_HPP_
00039 #define BLOCXX_REF_COUNT_HPP_
00040 #include "blocxx/BLOCXX_config.h"
00041 #include "blocxx/AtomicOps.hpp"
00042 
00043 // The classes and functions defined in this file are not meant for general
00044 // use, they are internal implementation details.  They may change at any time.
00045 
00046 namespace BLOCXX_NAMESPACE
00047 {
00048 
00050 class BLOCXX_COMMON_API RefCount
00051 {
00052 public:
00053    RefCount()
00054       : m_count(1)
00055    {
00056    }
00057    RefCount(Atomic_t c)
00058       : m_count(c)
00059    {
00060    }
00061    void inc()
00062    {
00063       AtomicInc(m_count);
00064    }
00065    bool decAndTest()
00066    {
00067       return AtomicDecAndTest(m_count);
00068    }
00069    int get() const
00070    {
00071       return AtomicGet(m_count);
00072    }
00073 private:
00074    Atomic_t m_count;
00075 };
00076 
00077 } // end namespace BLOCXX_NAMESPACE
00078 
00079 #endif