[DTrace-devel] timestamp patch

[eugene.loh at oracle.com]

In retrospect, this patch should probably wait until Kris has
finished putting back his compiler changes.  Ah well.  Take a
look if you like.

I am curious about one thing.  With legacy DTrace,
        BEGIN{trace(timestamp)}
        BEGIN{trace(timestamp)}
would return two different values.  Once Kris's compiler changes
are finished, will those two clauses be squashed to
        BEGIN{trace(timestamp);
              trace(timestamp)}
resulting in the same value being reported both times?  Again,
I'm simply curious.  Such a change in semantics is both subtle
and arguably even desirable.