RWAtomicCounter Class Reference

Maintains a reference count safely in a multithreaded environment. More...

#include <rw/pointer/RWAtomicCounter.h>

Public Member Functions
	RWAtomicCounter (unsigned n=0)
	RWAtomicCounter (RWStaticCtor)
	RWAtomicCounter (const RWAtomicCounter &)
unsigned	addReference (void)
RWAtomicCounter &	operator= (const RWAtomicCounter &)
unsigned	references (void) const
unsigned	removeReference (void)

Detailed Description

RWAtomicCounter maintains a reference count and can safely be used in a multithreaded environment.

Example

#include <rw/pointer/RWAtomicCounter.h>
#include <rw/pointer/RWTCountingPointer.h>

int main()
{
  RWTCountingPointer<int, RWAtomicCounter> pointer = new int(10);

  return 0;
}

Constructor & Destructor Documentation

RWAtomicCounter::RWAtomicCounter ( unsigned  n = 0 )

inline

Constructs a default instance that initializes the reference count. Throws no exceptions.

RWAtomicCounter::RWAtomicCounter ( RWStaticCtor  )

inline

Constructs a static instance that does not initialize the reference count. Throws no exceptions.

RWAtomicCounter::RWAtomicCounter ( const RWAtomicCounter &  )

inline

Default-initializes the internal count to zero.

Member Function Documentation

unsigned RWAtomicCounter::addReference ( void  )

inline

Increments the reference count and then returns the previous value minus one.

RWAtomicCounter & RWAtomicCounter::operator= ( const RWAtomicCounter &  )

inline

Copy assignment operator that does nothing, allowing derived classes to do assignments. Returns *this.

unsigned RWAtomicCounter::references ( void  ) const

inline

Queries the current reference count. Throws no exceptions.

unsigned RWAtomicCounter::removeReference ( void  )

inline

Decrements the reference count and then returns the previous value minus one.