//对AppConfig对象的GetInstance加锁
private static void AsyncCreateAppConfigWithLock()
{
AppConfigWithLock appConfig1 = null;
AppConfigWithLock appConfig2 = null;
Action createA = () => appConfig1 = AppConfigWithLock.GetInstance();
Action createB = () => appConfig2 = AppConfigWithLock.GetInstance();
Parallel.Invoke(createA, createB);
Console.WriteLine(object.ReferenceEquals(appConfig1, appConfig2));
Console.ReadKey();
}
//获取唯一实例
public static AppConfigWithLock GetInstance()
{
if (appConfig == null)
{
lock (asyncRoot)
{
if (appConfig == null)
{
appConfig = new AppConfigWithLock();
}
}
}
return(appConfig);
}
