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#ifndef TEST_SUITE_REFCOUNT_H__
#define TEST_SUITE_REFCOUNT_H__
struct RCObjBase {
/*!
Return the numbers of active references.
\return The internal \c refCount value.
*/
int ref_count() const
{
return refCount;
}
/*!
Add one reference.
\return The reference counter value.
*/
int addref() const
{
return add_ref();
}
/*!
Delete one reference. If the refCount is zero, the
object is deleted.
\return The reference counter value, which can be zero after
deletion.
*/
int delref() const
{
if (ref_count() == 0 || del_ref() == 0 )
{
delete this;
return 0;
}
return ref_count();
}
protected:
RCObjBase();
RCObjBase(const RCObjBase& );
virtual ~RCObjBase() = 0;
private:
RCObjBase& operator=(const RCObjBase& );
friend struct RCObj;
int add_ref() const
{
return ++refCount;
}
int del_ref() const
{
return --refCount;
}
mutable int refCount;
};
struct RCObj : virtual RCObjBase {
protected:
RCObj()
{
}
};
/*! Reference an RCObj object
\return The input pointer \a r
*/
template <class T>
inline
T* addref(T* r)
{
return (r && r->addref() ) ? r : 0;
}
/*! Unreference an RCObj object.
\return The input pointer \a r or nil if the object was deleted.
*/
template <class T>
inline
T* delref(T* r)
{
return ( r && r->delref() ) ? r : 0;
}
RCObjBase::RCObjBase()
: refCount(0)
{
}
RCObjBase::~RCObjBase()
{
}
RCObjBase::RCObjBase(const RCObjBase&)
: refCount(0)
{
}
RCObjBase& RCObjBase::operator=(const RCObjBase&)
{
return *this;
}
template <class T>
struct RCPtr {
typedef T* pointer_type;
typedef T& refernce_type;
typedef T value_type;
RCPtr();
RCPtr(T* realPtr);
RCPtr(const RCPtr& rhs);
~RCPtr();
RCPtr& operator=(const RCPtr& rhs);
RCPtr& operator=(T* realPtr);
T* operator->() { return pointee; }
T& operator*() { return *pointee; }
const T* operator->() const { return pointee; }
const T& operator*() const { return *pointee; }
operator T*() { return pointee; }
operator T&() { return *pointee; }
operator const T*() const { return pointee; }
operator const T&() const { return *pointee; }
T* get() { return pointee; }
T* get() const { return pointee; }
private:
T* pointee;
};
template <class T>
inline
RCPtr<T>::RCPtr()
: pointee(0)
{
}
template <class T>
inline
RCPtr<T>::RCPtr(T* realPtr)
: pointee(realPtr)
{
addref(pointee);
}
template <class T>
inline
RCPtr<T>::RCPtr(const RCPtr& rhs)
: pointee(rhs.pointee)
{
addref(pointee);
}
template <class T>
inline
RCPtr<T>::~RCPtr()
{
delref(pointee);
}
template <class T>
inline
RCPtr<T>& RCPtr<T>::operator=(const RCPtr& rhs)
{
if (pointee != rhs.pointee) {
delref(pointee);
pointee = rhs.pointee;
addref(pointee);
}
return *this;
}
#endif //TEST_SUITE_REFCOUNT_H__
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