标签：
critical-section problem
a solution to critical-setion problem should satisfy 3 requiremnets:
1.Mutual exclusion
2.Progress
3.Bounded waiting
2 & 3的区别？有什么场景？
Process Synchronization 进程同步
原文地址：http://www.cnblogs.com/JosephLiao/p/4468749.html
