摘要
实时操作系统中对任务的响应时间提供了机制上的保障,但任务的同步与互斥又会削弱对任务响应的实时性,本文通过针对一个具体的实时操作系统VxWorks,详细的讨论了任务的同步与互斥机制,重点的讨论了互斥信号量机制对系统的影响。
In real-time operating system, mechanisms is supported in order to guarantee that the deadline time of tasks will be met. But mechanism of synchronism and exclusion supported by operation also weaken the response to deadline of tasks. Synchronism and exclusion of a particular operating system VxWorks is studied and focus is put on exclusion semaphore which is important to access share resource.
出处
《微计算机信息》
2004年第3期78-80,11,共4页
Control & Automation
关键词
VXWORKS
实时操作系统
信号量
同步
互斥
优先权
计算机
VxWorks
real time operating system
synchronism and exclusion of tasks
protocol of priority inheritance
critical area
