webrev review request for 6880029

[Xiaobin Lu]

Webrev: http://javaweb.sfbay/~xl116366/webrev/6880029/

Details:

The bug was uncovered by CBOE when their application crashed pretty 
early during startup when -XX:+PrintSafepointStatistics was specified. 
The root cause is that the polling page exception used by JIT could 
occur without safepoint being involved and the array which is used to 
record the page trap count hasn't been initialized at that point. The 
fix is to do initialization at the point where we try to record the page 
trap count.

Verified by: CBOE

Thanks,

-Xiaobin