互斥

• A type of semaphore with just two states . also called a mutex
  一种只有两种状态的信号。也叫互斥信号。
• Controls to allow users to choose between exclusive options
  控件以使用户能在互斥的选项之间进行选择。
• Semaphores and process mutual exclusion
  信号量和进程互斥
• Except when they are mutually exclusive for example ,
  ，但是，如果常量之间是互斥的，则不能组合使用，例如
• Linux has three kinds of mutex
  Linux有三种类型的互斥。
• Once the required mutexes have been acquired , the task can execute
  获取所需互斥体后，任务就可以执行了。
• Open an existing named mutex
  打开现有的已命名互斥体。
• To create the mutex , as shown in
  来创建互斥，如下面的
• Mutual exclusion can be achieved with the use of a semaphore or mutex
  互斥现象能由使用信号灯或互斥完成。