This is related to 6857194: Add hotspot new perf counters to aid class
loading performance measurement.
It's useful to add performance counters in the library code so that perf
data from the JDK and VM can be collected and output in a unified way
(written in the jvmstat shared memory buffer). I add a simple
sun.misc.PerfCounter class to maintain the list of perf counters for the
library to use. This fix only instruments the class loading and jar/zip
to collect simple basic metrics. Additional perf counters will be
added in the future.
Webrev:
http://cr.openjdk.java.net/~mchung/6878481/webrev.00/
Thanks
Mandy
