Linux Process Management

作者: 来源:网络文章时间:2005-12-16 23:43:24

Linux Process Management(7) >              .                                .
>
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>    5. P.20 Manipulating the Current Process State
>          1. Using the set_task_state(task, state) function to set the
>             given task to the given state.
>    6. P.20 Process Context
>          1. One of the most important parts of a process is the
>             executing program code.
>          2. When a program executes a system call or triggers an
>             exception, it enters kernel-space. At this point, the
>             kernel is said to "be executing on behalf of the process"
>             and is in process context.
>          3. When in process context, the current macro is valid.
>          4. All processes are descendents of the init process whose
>             PID is 1.
>          5. Every process on the system has exactly one parent.
>             Likewise, every process can have one or more children. The
>             relationship between processes is stored in the process

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