驗證網址www.jguru.com安全性

How do you write a Thread-Safe Singleton?

The problem is that the thread (Ta) making the call could swap-out immediately after checking for a null. A subsequent thread (Tb) could then make a call to get the instance and construct an instance of the Singleton. When the original thread (Ta) is then...

網址安全性掃描由 google 提供