hello, is there anyway to count number of executed instructions of a function

hello, is there anyway to count number of executed instructions of a function

[李硕（lishuo122587 - 新诛仙世界服务器组）]

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Dear programmers,
       Hello, I’m a newer, does someone known how to count number of executed instructions of a function?

Yours, sincerely

从 Windows 版邮件<https://go.microsoft.com/fwlink/?LinkId=550986>发送

Re: hello, is there anyway to count number of executed instructions of a function

[Philippe Waroquiers]

On Fri, 2022-09-02 at 11:16 +0000, 李硕（lishuo122587 - 新诛仙世界服务器组） wrote:
> Dear programmers,
>        Hello, I’m a newer, does someone known how to count number of executed instructions of a function?
> 
> Yours, sincerely
> 
> 从 Windows 版邮件<https://go.microsoft.com/fwlink/?LinkId=550986>发送
> 

To my knowledge, GDB does not have such a feature.
But for sure, there are various tools that can do that.
E.g. see valgrind  https://valgrind.org/docs/manual/manual.html 
and in particular the sections about callgrind and cachegrind (and possibly
the lackey tool).
Note that kcachegrind is a nice visualisation tool for callgrind output.

On linux, the "perf" command might also do what you want (significantly faster than
valgrind, which have a high performance impact).

Philippe