Chapter s Operating System 5.1.1 Resource allocation and related functions In sequential sharing, a resource is allocated for exclusive use by a program. When the resource is de-allocated, it is marked free in the resource table. Now it can be allocated to another program. In concurrent sharing, two or more programs can concurrently use the same resource. Examples of concurrent sharing are data files. Most other resources cannot be shared concurrently. Unless otherwise mentioned, all through this text resources are assumed to be only sequentially shareable. 在串行共享中,一个资源只能分配给一个程序,当资源被释放后,它在资 源表中被标记为“空闲”,这时它才能被分配给下一个程序。在并行共亨 中,两个以上的程序可以同时使用同样的资源。并行共享的例子是数据文 件,其他资源通常不能被并行共享。在本文中以后若无特殊说明,所有资源 都被假设为只能串行共享。 《什第机美语 5-15Chapter 5 Operating System 计算机专业英语 5-15 In sequential sharing, a resource is allocated for exclusive use by a program. When the resource is de-allocated, it is marked free in the resource table. Now it can be allocated to another program. In concurrent sharing, two or more programs can concurrently use the same resource. Examples of concurrent sharing are data files. Most other resources cannot be shared concurrently. Unless otherwise mentioned, all through this text resources are assumed to be only sequentially shareable. 在串行共享中，一个资源只能分配给一个程序，当资源被释放后，它在资 源表中被标记为“空闲”，这时它才能被分配给下一个程序。在并行共亨 中，两个以上的程序可以同时使用同样的资源。并行共享的例子是数据文 件，其他资源通常不能被并行共享。在本文中以后若无特殊说明,所有资源 都被假设为只能串行共享。 5.1.1 Resource allocation and related functions