Implementation of Singleton mode in C++/CLI

The singleton mode implemented by double detection lock (double-checked locking) has considerable value in multithreading application. The Ace_singleton template class is used extensively in the implementation of Aces to convert generic classes into classes with singleton behavior. This is a good way to eliminate some of the repeated code odor, and the optimized performance is 15 times times higher than the standard mutex version. Recently in the use of C++/CLI to do some work, singleton inevitably need to use, so I made another wheel.

1 #pragma once

2

3/** class Sidle::singleton

4 Brief Singleton (double-checked locking)

5 Author Wulping

6 Version 1.0

7 Date 2005.02.08-

8 bugs

9 Warning

10 */

11

Namespace Sidle

13 {

The using namespace System;

using namespace system::threading;

16

Template

Ref class Singleton

19 {

Public:

Static _t^ Instance ()

22 {

if (_instance = = nullptr)

24 {

_mut->waitone ();

A try

27 {

if (_instance = = nullptr)

29 {

_instance = gcnew _t ();

31}

32}

Finally

34 {

_mut->releasemutex ();

36}

37}

return _instance;

39}

Protected:

Singleton () {}

The static _t^ _instance;

The static mutex^ _mut = Gcnew Mutex ();

44}; Ref class Singleton

45

46}; Namespace Sidle