ACE_Singleton3

A singleton adapter uses the adapter pattern to turn ordinary classes into singletons optimized with the double-checked locking optimization pattern.

Usage

#include <ace/Singleton.h>
template<class TYPE, class ACE_LOCK>
class ACE_Singleton : public ACE_Cleanup
{
  public:
    static TYPE *instance (void);
    virtual void cleanup (void *param = 0);
    static void dump (void);
  protected:
    ACE_Singleton (void);
    TYPE instance_;
    static ACE_Singleton<TYPE, ACE_LOCK> *singleton_;
    static ACE_Singleton<TYPE, ACE_LOCK> *&instance_i (void);
};

Overview

Public members

static TYPE *instance (void);

Global access point to the Singleton.

virtual void cleanup (void *param = 0);

Cleanup method, used by ace_cleanup_destroyer to destroy the ACE_Singleton.

static void dump (void);

Dump the state of the object.

Protected members

ACE_Singleton (void);

Default constructor.

TYPE instance_;

Contained instance.

static ACE_Singleton<TYPE, ACE_LOCK> *singleton_;

Pointer to the Singleton (ACE_Cleanup) instance.

static ACE_Singleton<TYPE, ACE_LOCK> *&instance_i (void);

Get pointer to the Singleton instance.

Library

ace