我写了一段关于单例模式实现的代码。不确定它的正确性。请给出一些建议。感谢。
public class Singleton
{
public Singleton Instance
{
get
{
if (_instance == null)
{
if (_mutexCreation.WaitOne(0))
{
try
{
if (_instance == null)
{
_instance = new Singleton();
}
}
finally
{
_mutexCreation.ReleaseMutex();
_eventCreation.Set();
}
}
else
{
_eventCreation.WaitOne();
}
}
return _instance;
}
}
private Singleton() { }
private static Singleton _instance;
private static Mutex _mutexCreation = new Mutex();
private static ManualResetEvent _eventCreation = new ManualResetEvent(false);
}
答案 0 :(得分:4)
public class Singleton
{
private static object _syncRoot = new object();
public Singleton Instance
{
get
{
if (_instance == null)
{
lock (_syncRoot)
{
if (_instance != null)
return _instance;
_instance = new Singleton();
}
}
return _instance;
}
}
private Singleton() { }
private static Singleton _instance;
}
如果您不想使用延迟加载,只需直接在静态构造函数中创建一个新实例。