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//////////////////////////////////////////////////////////////////////////
//
// pgScript - PostgreSQL Tools
//
// Copyright (C) 2002 - 2014, The pgAdmin Development Team
// This software is released under the PostgreSQL Licence
//
//////////////////////////////////////////////////////////////////////////
#ifndef PGSSHAREDPTR_H_
#define PGSSHAREDPTR_H_
template <typename T> class pgsSharedPtr
{
private:
struct count
{
long c;
T *q;
count(T *q) :
c(1), q(q)
{
}
~count()
{
pdelete(q);
}
};
count *p;
public:
pgsSharedPtr(T *q) :
p(pnew count(q))
{
}
pgsSharedPtr() :
p(pnew count(0))
{
}
pgsSharedPtr(const pgsSharedPtr &that) :
p(that.p)
{
++p->c;
}
~pgsSharedPtr()
{
if (!--p->c)
{
pdelete(p);
}
}
pgsSharedPtr &operator =(pgsSharedPtr that)
{
std::swap(p, that.p);
return (*this);
}
T &operator *()
{
return *(p->q);
}
const T &operator *() const
{
return *(p->q);
}
T *operator ->()
{
return p->q;
}
const T *operator ->() const
{
return p->q;
}
const T *get() const
{
return p->q;
}
};
#endif /*PGSSHAREDPTR_H_*/
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