dtrace usdt

[Michael Harsch]

Hi Prashanth,

I've reproduced this on 10.0BETA4.  It appears to be specific to i386;
the same test works fine on amd64.

On Wed, Dec 4, 2013 at 3:29 AM, Prashanth Kumar <pra_udupi at yahoo.co.in> wrote:
> Hi
> Tried running the dtrace usdt example code from freebsd dtrace userland wiki page.
> (https://wiki.freebsd.org/DTrace/userland).
>
> If run standalone the program segfaults.
>  # ./db
> Bus error (core dumped)
>
> If run with dtrace
>
>   # dtrace -s db.d -c ./db
> dtrace: script 'db.d' matched 2 probes
> CPU     ID                    FUNCTION:NAME
>   0  43245                 main:query-start Query: SELECT * FROM apples
>
> the program hungs after printing the first probe.
>
> Had to use the following command
>   # env WITH_DTRACE=1 make
>
> to build the program. Is there any other steps that i have missed to make the program work?.
> This was tested on FreeBSD 10BETA1 - i386.
>
> regards
> Prashanth
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