Linux Process Management

作者: 来源:网络文章时间:2005-12-16 23:43:24

Linux Process Management(17) >                   another thread in their thread group or the init
>                   process, and set the task's state to TASK_ZOMBIE.
>                8. Finally, call schedule() to switch to a new process,
>                   this is the last code the task will ever execute.
>                9. ==> The only memory it occupies is its kernel stack
>                   and slab object, which contain its thread_info and
>                   task_struct structures. The task exists solely to
>                   provide information to its parent.
>   13. P.28 Removal of the Process Descriptor
>          1. The acts of cleaning up after a process and removing its
>             process descriptor are separate.
>          2. When it is time to finally deallocate the process
>             descriptor, release_task() is invoked. It does the following:
>                1. Call free_uid() to decrement the usage count of the
>                   process's user.

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