The lcov tool generates an entire HTML tree that contains every line of code in the kernel and data on how many times, if any, each line was executed.
lcov 工具会生成一棵完整的 HTML 树,其中包含有内核中代码的每一行以及关于每一行执行了 多少次的数据(如果有的话)。
Doing so adds a line that loads the Tree widget, which allows you to use the widget in the content area of your code.
这样做将添加一行代码用于装入Tree控件,它将允许您在代码的内容区域使用控件。
This line of code returns the user root of the data tree.
这一行代码返回数据树的user root。
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