Date: Mon, 2 Mar 2020 11:13:50 -0500 From: Mark Johnston <markj@freebsd.org> To: kamalp@acm.org Cc: freebsd-dtrace@freebsd.org Subject: Re: set argument Message-ID: <20200302161350.GB26104@spy> In-Reply-To: <CAK=yUGL8Ls5V4E=ucPJ9Unvf_UhDDngU7ue%2BkeRL3Zx2khJw5Q@mail.gmail.com> References: <CAK=yUGL8Ls5V4E=ucPJ9Unvf_UhDDngU7ue%2BkeRL3Zx2khJw5Q@mail.gmail.com>
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On Mon, Mar 02, 2020 at 03:33:57PM +0530, Kamal R. Prasad wrote:
> hello,
>
> How does dtrace access the argument type declarations when we define a new
> SDT? eg:- I define an SDT that has arg0 as (struct mystrust*)
>
> I have defined in my proprietary header file
> ---------------
> typedef struct abc {
> int a;
> int b;
> int c;
> };
> typedef struct def {
> int d;
> int e;
> int f;
> };
>
> typedef struct mystrust {
> struct abc* myarg1;
> struct def* myarg2
> };
> ---------------
>
> I want my probe to be able to access the typedeffor struct abc and struct
> def.
Is this in the kernel or userspace? We automatically build the kernel
with CTF info included, so dtrace should be able to see the structure
definitions automatically.
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