public static SingletonThreadSafe GetInstance()
{
// this will create two instances running in parallel
//if (_instance == null)
//{
// if (_instance == null)
// {
// _instance = new SingletonThreadSafe();
// }
//}
//return _instance;
// double-checked locking for better performance
if (_instance == null)
{
lock (_instanceLock) // lock lower the performance
{
if (_instance == null)
{
_instance = new SingletonThreadSafe();
}
}
}
return(_instance);
}
public static void FromB()
{
var singleton2 = SingletonThreadSafe.GetInstance();
singleton2.IncrementCount("B");
singleton2.IncrementCount("B");
singleton2.IncrementCount("B");
}
public static void FromA()
{
var singleton1 = SingletonThreadSafe.GetInstance();
singleton1.IncrementCount("A");
singleton1.IncrementCount("A");
singleton1.IncrementCount("A");
}
