Jason Tedor 584be0b3f8 Refactor JvmGcMonitorService for testing
This commit refactors the JvmGcMonitorService so that it can be
tested. In particular, hooks are added to verify that the
JvmMonitorService correctly observes slow GC events, and that the
JvmGcMonitorService logs the correct messages.

Relates #18378
2016-05-17 13:05:36 -04:00
..