blocxx
ReferenceBase.hpp
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32
33
38#ifndef BLOCXX_REFERENCE_BASE_HPP_INCLUDE_GUARD_
39#define BLOCXX_REFERENCE_BASE_HPP_INCLUDE_GUARD_
40#include "blocxx/BLOCXX_config.h"
41#include "blocxx/RefCount.hpp"
42
43// The classes and functions defined in this file are not meant for general
44// use, they are internal implementation details. They may change at any time.
45
46namespace BLOCXX_NAMESPACE
47{
48
50template<class T>
51inline void RefSwap(T& x, T&y)
52{
53 T t = x;
54 x = y;
55 y = t;
56}
58// This class contains the non-templated code for Reference, to help
59// minimize code bloat.
60class BLOCXX_COMMON_API ReferenceBase
61{
62#if !defined(__GNUC__) || __GNUC__ > 2 // because of a gcc 2.95 ICE
63protected:
64#else
65public:
66#endif
68 : m_pRefCount(new RefCount) {}
70 : m_pRefCount(0)
71 {
72 m_pRefCount = arg.m_pRefCount;
73 m_pRefCount->inc();
74 }
75 void incRef()
76 {
77 m_pRefCount->inc();
78 }
79
80 bool decRef()
81 {
82 if (m_pRefCount->decAndTest())
83 {
84 delete m_pRefCount;
85 return true;
86 }
87 return false;
88 }
90 {
91 RefSwap(m_pRefCount, arg.m_pRefCount);
92 }
94 {
95 decRef();
96 m_pRefCount = arg.m_pRefCount;
97 incRef();
98 }
99
100#if !defined(__GNUC__) || __GNUC__ > 2 // because of a gcc 2.95 ICE
101protected:
102#else
103public:
104#endif
106};
107
108} // end namespace BLOCXX_NAMESPACE
109
110#endif
111
void swap(ReferenceBase &arg)
ReferenceBase(const ReferenceBase &arg)
void useRefCountOf(const ReferenceBase &arg)
Taken from RFC 1321.
void RefSwap(T &x, T &y)