Chapter s Operating System 5.1.1 Resource allocation and related functions When a resource is sequentially shareable, the system can de allocate a resource when the program makes an explicit request for de-allocation. Alternatively, it can de-allocate a resource by force. This is called resource preemption, that is, forceful de- allocation of a resource 当资源可以串行共享时,系统可以在程序明确地提出释放分配 的请求后,对资源进行释放。或者,系统也可强行释放资源 这称为资源抢占。 《什第机专出美语Chapter 5 Operating System 计算机专业英语 5-16 When a resource is sequentially shareable, the system can de￾allocate a resource when the program makes an explicit request for de-allocation. Alternatively, it can de-allocate a resource by force. This is called resource preemption, that is, forceful de￾allocation of a resource. 当资源可以串行共享时，系统可以在程序明确地提出释放分配 的请求后，对资源进行释放。或者，系统也可强行释放资源， 这称为资源抢占。 5.1.1 Resource allocation and related functions