When this probe fires, you want to count the number of invocations and emit this count with an indication of the calling process ID (PID).

当该探针触发时，您希望计算调用的次数，并发送这个计数以及表示调用进程 ID（PID）的信息。

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Unlike the system call probe, user function probes must specify a specific process ID and are limited to probe the function at entry.

与系统调用探测不同，用户函数探测必须指定一个进程ID，而且只能探测函数的进入。

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The name of the pid probe provider is formed by suffixing process id to the string 'pid.'

pid探测提供者的名称形式为字符串‘pid’加上进程id。

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