On Sat, Nov 8, 2008 at 5:18 PM, Jon Haslam <[EMAIL PROTECTED]> wrote:
> Hi Shiv,
>
>> DTraceToolkit has a dtrace script (Proc/pidpersec.d) that refers to a
>> variable mpid as below
>>
>> profile:::tick-1sec
>> {
>> printf("%-22Y %8d %6d\n", walltimestamp, `mpid, pids);
>> pids = 0;
>> }
>>
>> Where is `mpid getting picked from (it isn't declared anywhere else)?
>
> The backquote (`) allows you to access variables in the running kernel. The
> 'mpid' variable is defined in usr/src/uts/common/os/pid.c (on Solaris
> that is). For more information on the scoping operator check out the docs:
>
> http://wikis.sun.com/display/DTrace/Variables#Variables-ExternalVariables
>
Thanks to all for the responses. It is now clear.
-Shiv
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