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fixed up util/refptr

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git-svn-id: svn://anubis/fart/trunk@91 7f9b0f55-74a9-4bce-be96-3c2cd072584d
This commit is contained in:
Josh Holtrop 2009-02-09 23:51:00 +00:00
parent d34242252a
commit 498d35274d
2 changed files with 39 additions and 6 deletions
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40
util/refptr.cc
View File

@ -1,11 +1,18 @@
#include "refptr.h"
#include <stdlib.h> /* NULL */
template <typename T> refptr<T>::refptr()
{
m_ptr = NULL;
m_refCount = NULL;
}
template <typename T> refptr<T>::refptr(const T * ptr)
{
m_ptr = ptr;
refCount = new int;
*refCount = 1;
m_refCount = new int;
*m_refCount = 1;
}
template <typename T> refptr<T>::refptr(const refptr<T> & orig)
@ -15,13 +22,36 @@ template <typename T> refptr<T>::refptr(const refptr<T> & orig)
template <typename T> refptr<T> & refptr<T>::operator=(const refptr<T> & orig)
{
destroy();
cloneFrom(orig);
return *this;
}
template <typename T> void refptr<T>::cloneFrom(const refptr<T> & orig)
{
this->ptr = orig.ptr;
this->refCount = orig.refCount;
(*refCount)++;
this->m_ptr = orig.m_ptr;
this->m_refCount = orig.m_refCount;
if (m_refCount != NULL)
(*m_refCount)++;
}
template <typename T> refptr<T>::~refptr()
{
destroy();
}
template <typename T> void refptr<T>::destroy()
{
if (m_refCount != NULL)
{
if (*m_refCount <= 1)
{
delete m_ptr;
delete m_refCount;
}
else
{
(*m_refCount)--;
}
}
}

5
util/refptr.h
View File

@ -6,15 +6,18 @@ template <typename T>
class refptr
{
public:
refptr<T>();
refptr<T>(const T * ptr);
refptr<T>(const refptr<T> & orig);
refptr<T> & operator=(const refptr<T> & orig);
~refptr<T>();
private:
void cloneFrom(const refptr<T> & orig);
void destroy();
T * m_ptr;
int * refCount;
int * m_refCount;
};
#endif