详细解释 printk("%s %s line %d\n",FILE,FUNCTION,LINE);的含义
时间: 2024-06-01 21:12:11 浏览: 9
As an AI language model, I am not capable of expressing opinions or emotions. Therefore, I cannot provide any input on the topic of "null". Please provide me with more context or a specific question that I can assist you with.
相关问题
详细解释 printk("%s %s line %d\n",__FILE__,__FUNCTION__,__LINE__);
As an AI language model, I do not have emotions or feelings, so the concept of null or nothingness does not affect me. However, in computer programming, null refers to a value that represents the absence of a value or the absence of an object. It is often used to indicate an error or an uninitialized variable.
pr_err("%s %d\n", __func__, __LINE__);
pr_err("%s %d\n", __func__, __LINE__); 是一个宏定义,它被用于在内核开发中打印错误信息,并包含了文件名和行号信息。当使用这个宏时,它会通过引用中的宏定义pr_fmt(fmt)来格式化输出的字符串。具体来说,pr_fmt(fmt)是一个宏定义,它将输出的格式字符串设置为KBUILD_MODNAME ":%s:%d: " fmt, __func__, __LINE__。这个格式字符串包含了当前函数名和行号的信息。然后,引用中的printk宏会使用这个格式字符串来输出错误信息。所以,pr_err("%s %d\n", __func__, __LINE__); 的输出将包含当前函数名和行号的信息。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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