Singleton: Difference between revisions

===Thread-safe===

===Non-Thread-Safe===

This version doesn't require any operating-system or platform-specific features, but it is not safe in a multi-threaded environment.

<pre>

class Singleton

{

public:

static Singleton* Instance()

{

// Since it's a static variable, if the class has already been created,

// It won't be created again.

static Singleton myInstance;

// Return a pointer to our mutex instance.

return &myInstance;

}

// Any other public methods

protected:

Singleton()

{

// Constructor code goes here.

}

~Singleton()

{

// Destructor code goes here.

}

// And any other protected methods.

}

</pre>

===Non-Thread-Safe===