同步对象

• There are two approaches to synchronization , polling and using synchronization objects
  有两种方法可以实现同步，轮询和使用同步对象。
• Before returning , the function modifies the state of some types of synchronization objects
  返回前，函数将修改某些类型的同步对象的状态。
• A latch is a lightweight synchronization object that is used by various sql server components
  闩锁是各种sql server组件所使用的轻型同步对象。
• Both local and named event wait handles use system synchronization objects , which are protected by
  本地和命名事件等待句柄都使用系统同步对象，
• Mutex objects are synchronization objects that can be owned by only a single thread at a time
  Mutex对象是一次只能为一个线程所拥有的同步对象。
• The following table describes the actions that can be taken by threads that access synchronized objects
  下表描述了访问同步对象的线程可以采取的操作：
• The exception that is thrown when an object appears more than once in an array of synchronization objects
  当对象在同步对象数组中不止一次出现时引发的异常。
• The system provides synchronization objects that can be used to coordinate resource sharing among multiple threads
  系统提供了可用于协调多个线程之间的资源共享的同步对象。
• Class implements methods that support waiting for synchronization objects to be signaled
  Waithandle类实现下列支持等待同步对象得到信号通知的方法： waitone 、 waitany和waitall 。
• A good way to take locks in static methods involves adding a static internal synchronization object to the code
  要较好地在静态方法中采用锁，需要向代码添加静态内部同步对象。