///This is not Thread safe. when mutli threads try to call the
///GetSingletonObj, it can potentially ends up with multi instance
public static SingletonCalss GetSingletonObj()
{
if (singletonobj == null)
{
singletonobj = new SingletonCalss();
}
return(singletonobj);
}
///This is Thread safe. But slows down the application
public static SingletonCalss ThreadSafeGetSingletonObj()
{
lock (singletonobj)
{
if (singletonobj == null)
{
singletonobj = new SingletonCalss();
}
return(singletonobj);
}
}
///This is Thread safe and only impacts creation
public static SingletonCalss ThreadSafeGetSingletonObjV2()
{
if (singletonobj == null)
{
lock (singletonobj)
{
//Double check incase it got initialized while locking
if (singletonobj == null)
{
singletonobj = new SingletonCalss();
}
}
}
return(singletonobj);
}
static void Main(string[] args)
{
SingletonCalss singleton = SingletonCalss.GetSingletonObj();
}