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问题描述
在Linux内核开发,第三版,这code被赋予遍历当前进程的孩子。
In Linux Kernel Development, 3rd ed, this code was given for traversing the children of the current process.
list_for_each(list, ¤t->children) { task = list_entry(list, struct task_struct, sibling); /* task now points to one of current’s children */ }在兄弟,在这个成语看起来格格不入。其目的是什么?
The "sibling" in this idiom looks out of place. What is its purpose?
推荐答案兄弟是名称 LIST_HEAD 结构结构的task_struct 对应于父母的孩子名单。
sibling is the name of the list_head structure in struct task_struct that corresponds to the parent's children list.
也就是说,在这个循环列表总是指向一个兄弟的成员结构的task_struct 或孩子父成员。
That is, in this loop list always points to a sibling member of a struct task_struct, or the children member of the parent.
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内核:如何遍历当前进程的孩子?
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