[OpenJDK 2D-Dev] [9] Review Request: 8152683 Deadlock when resuming from sleep with different monitor setup

[Sergey Bylokhov]

Hello,
Please review the fix for jdk9.

Bug: https://bugs.openjdk.java.net/browse/JDK-8152683
Webrev can be found at: http://cr.openjdk.java.net/~serb/8152683/webrev.00/

In the fix we update the mainDisplayId when the list of displays are updated on Appkit thread, instead of reading it each time from the different threads. No new issues were found by jck and jtreg tests.

The fix was contributed by Karl von Randow <karl at xk72.com>:
[1] http://mail.openjdk.java.net/pipermail/2d-dev/2017-January/008087.html