2 * Copyright (c) 2003 The Regents of The University of Michigan
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38 RefCounted(const RefCounted &);
41 RefCounted() : count(0) {}
42 virtual ~RefCounted() {}
44 void incref() { ++count; }
45 void decref() { if (--count <= 0) delete this; }
65 RefCountingPtr() : data(NULL) {}
66 RefCountingPtr(T *data) { copy(data); }
67 RefCountingPtr(const RefCountingPtr &r) { copy(r.data); }
68 ~RefCountingPtr() { del(); }
70 T *operator->() { return data; }
71 T &operator*() { return *data; }
72 T *get() { return data; }
74 const T *operator->() const { return data; }
75 const T &operator*() const { return *data; }
76 const T *get() const { return data; }
78 RefCountingPtr &operator=(T *p) {
86 RefCountingPtr &operator=(const RefCountingPtr &r) {
94 bool operator!() const { return data == 0; }
95 operator bool() const { return data != 0; }
99 bool operator==(const RefCountingPtr<T> &l, const RefCountingPtr<T> &r)
100 { return l.get() == r.get(); }
103 bool operator==(const RefCountingPtr<T> &l, const T *r)
104 { return l.get() == r; }
107 bool operator==(const T &l, const RefCountingPtr<T> &r)
108 { return l == r.get(); }
111 bool operator!=(const RefCountingPtr<T> &l, const RefCountingPtr<T> &r)
112 { return l.get() != r.get(); }
115 bool operator!=(const RefCountingPtr<T> &l, const T *r)
116 { return l.get() != r; }
119 bool operator!=(const T &l, const RefCountingPtr<T> &r)
120 { return l != r.get(); }
122 #endif // __REFCNT_HH__