[dtrace-discuss] What am I missing in the dtrace script?

Brian D. Horn Brian.Horn at Sun.COM
Thu Jul 12 13:16:12 PDT 2007


Wee Yeh Tan wrote:
> On 7/11/07, Brian D. Horn <Brian.Horn at sun.com> wrote:
>> BTW, where is it documented that globals are not lock protected but
>> aggregates are?
>
> aggregates need not be lock protected.  It works on a per-cpu buffer.
>
> See 
> <http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/sys/dtrace_impl.h#247> 
>
>
Ok, then the question becomes "Where is documented that aggregates are 
MP safe, but scalars are
not MP safe?"


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