[9] RFR (S): 8068272: Extend WhiteBox API with methods that check monitor state and force safepoint

[Filipp Zhinkin]

Hi all,

please review new methods added to WhiteBox which aimed to
- check if a monitor associated with a java object is an inflated one;
- force safepoint synchronization (and cause monitor's deflation).

These methods are required to solve several issues in compiler/rtm tests [1].

Bug id: https://bugs.openjdk.java.net/browse/JDK-8068272
Webrev: http://cr.openjdk.java.net/~fzhinkin/8068272/webrev.00/
Testing: on local machine.

Thanks,
Filipp.

[1] https://bugs.openjdk.java.net/browse/JDK-8050486