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ThreadSafePointerTo< T > Class Template Reference

This works exactly like PointerTo, except that the object is designed to be thread-safe: it is generally safe to make unprotected assignments to this pointer, in the sense that the last assignment will win and the reference counts will be properly maintained. More...

#include "threadSafePointerTo.h"

Inheritance diagram for ThreadSafePointerTo< T >:
ThreadSafePointerToBase< T > PointerToVoid MemoryBase

List of all members.

Public Types

typedef
ThreadSafePointerToBase< T >
::To 
To

Public Member Functions

 ThreadSafePointerTo (To *ptr=(To *) NULL)
 ThreadSafePointerTo (const ThreadSafePointerTo< T > &copy)
void clear ()
 A convenient way to set the ThreadSafePointerTo object to NULL.
size_t get_hash () const
bool is_null () const
 Returns true if the PointerTo is a NULL pointer, false otherwise.
void operator delete (void *ptr)
void operator delete (void *ptr, void *)
void operator delete[] (void *, void *)
void operator delete[] (void *ptr)
void * operator new (size_t size)
void * operator new (size_t size, void *ptr)
void * operator new[] (size_t size, void *ptr)
void * operator new[] (size_t size)
 operator T * () const
 We also have the typecast operator to automatically convert ThreadSafePointerTo's to the required kind of actual pointer.
bool operator!= (const PointerToVoid &other) const
To & operator* () const
To * operator-> () const
bool operator< (const PointerToVoid &other) const
bool operator< (const void *other) const
ThreadSafePointerTo< T > & operator= (const ThreadSafePointerTo< T > &copy)
ThreadSafePointerTo< T > & operator= (To *ptr)
bool operator== (const PointerToVoid &other) const
void output (ostream &out) const
 A handy function to output ThreadSafePointerTo's as a hex pointer followed by a reference count.
To * p () const
 Returns an ordinary pointer instead of a ThreadSafePointerTo.

Protected Member Functions

void reassign (To *ptr)
 This is the main work of the ThreadSafePointerTo family.
void reassign (const ThreadSafePointerToBase< To > &copy)

Protected Attributes

void * _void_ptr

Detailed Description

template<class T>
class ThreadSafePointerTo< T >

This works exactly like PointerTo, except that the object is designed to be thread-safe: it is generally safe to make unprotected assignments to this pointer, in the sense that the last assignment will win and the reference counts will be properly maintained.

Definition at line 30 of file threadSafePointerTo.h.


Member Function Documentation

template<class T>
void ThreadSafePointerTo< T >::clear ( ) [inline]

A convenient way to set the ThreadSafePointerTo object to NULL.

(Assignment to a NULL pointer also works, of course.)

Reimplemented from ThreadSafePointerToBase< T >.

Definition at line 68 of file threadSafePointerTo.h.

template<class T>
bool ThreadSafePointerTo< T >::is_null ( ) const [inline]

Returns true if the PointerTo is a NULL pointer, false otherwise.

(Direct comparison to a NULL pointer also works.)

Reimplemented from PointerToVoid.

Definition at line 67 of file threadSafePointerTo.h.

template<class T >
ThreadSafePointerTo< T >::operator T * ( ) const [inline]

We also have the typecast operator to automatically convert ThreadSafePointerTo's to the required kind of actual pointer.

This introduces ambiguities which the compiler will resolve one way or the other, but we don't care which way it goes because either will be correct.

Definition at line 82 of file threadSafePointerTo.I.

template<class T >
void ThreadSafePointerToBase< T >::output ( ostream &  out) const [inline, inherited]

A handy function to output ThreadSafePointerTo's as a hex pointer followed by a reference count.

Definition at line 148 of file threadSafePointerToBase.I.

template<class T >
ThreadSafePointerTo< T >::To * ThreadSafePointerTo< T >::p ( ) const [inline]

Returns an ordinary pointer instead of a ThreadSafePointerTo.

Useful to work around compiler problems, particularly for implicit upcasts.

Definition at line 95 of file threadSafePointerTo.I.

template<class T >
void ThreadSafePointerToBase< T >::reassign ( To *  ptr) [inline, protected, inherited]

This is the main work of the ThreadSafePointerTo family.

When the pointer is reassigned, decrement the old reference count and increment the new one.

Definition at line 58 of file threadSafePointerToBase.I.


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