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Poco::SharedPtr< C > Class Template Reference

#include <SharedPtr.h>

List of all members.

Detailed Description

template<class C>
class Poco::SharedPtr< C >

SharedPtr is a "smart" pointer for classes implementing reference counting based garbage collection. SharedPtr is thus similar to AutoPtr. Unlike the AutoPtr template, which can only be used with classes that support reference counting, SharedPtr can be used with any class. For this to work, a SharedPtr manages a reference count for the object it manages.

SharedPtr works in the following way: If an SharedPtr is assigned an ordinary pointer to an object (via the constructor or the assignment operator), it takes ownership of the object and the object's reference count is initialized to one. If the SharedPtr is assigned another SharedPtr, the object's reference count is incremented by one. The destructor of SharedPtr decrements the object's reference count by one and deletes the object if the reference count reaches zero. SharedPtr supports dereferencing with both the -> and the * operator. An attempt to dereference a null SharedPtr results in a NullPointerException being thrown. SharedPtr also implements all relational operators and a cast operator in case dynamic casting of the encapsulated data types is required.

Definition at line 79 of file SharedPtr.h.

Public Member Functions

template<class Other>
SharedPtrassign (const SharedPtr< Other > &ptr)
SharedPtrassign (const SharedPtr &ptr)
SharedPtrassign (C *ptr)
template<class Other>
SharedPtr< Other > cast () const
const C * get () const
C * get ()
bool isNull () const
 operator C * ()
 operator const C * () const
bool operator! () const
bool operator!= (C *ptr) const
bool operator!= (const C *ptr) const
bool operator!= (const SharedPtr &ptr) const
const C & operator* () const
C & operator* ()
const C * operator-> () const
C * operator-> ()
bool operator< (C *ptr) const
bool operator< (const C *ptr) const
bool operator< (const SharedPtr &ptr) const
bool operator<= (C *ptr) const
bool operator<= (const C *ptr) const
bool operator<= (const SharedPtr &ptr) const
template<class Other>
SharedPtroperator= (const SharedPtr< Other > &ptr)
SharedPtroperator= (const SharedPtr &ptr)
SharedPtroperator= (C *ptr)
bool operator== (C *ptr) const
bool operator== (const C *ptr) const
bool operator== (const SharedPtr &ptr) const
bool operator> (C *ptr) const
bool operator> (const C *ptr) const
bool operator> (const SharedPtr &ptr) const
bool operator>= (C *ptr) const
bool operator>= (const C *ptr) const
bool operator>= (const SharedPtr &ptr) const
 SharedPtr (const SharedPtr &ptr)
template<class Other>
 SharedPtr (const SharedPtr< Other > &ptr)
 SharedPtr (C *ptr)
void swap (SharedPtr &ptr)
template<class Other>
SharedPtr< Other > unsafeCast () const

Private Member Functions

C * deref () const
void release ()
 SharedPtr (ReferenceCounter *pCounter, C *ptr)

Private Attributes

C * _ptr


class SharedPtr

The documentation for this class was generated from the following file:

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