Hello
please review the fix
http://cr.openjdk.java.net/~azvegint/jdk/9/8129116/00/
for the issue
https://bugs.openjdk.java.net/browse/JDK-8129116
This deadlock occurs when we setting a fullscreen window on each
graphics device sequentially without a delay.
EventQueue.invokeAndWait(() -> {
for (GraphicsDevice device : devices) {
device.setFullScreenWindow(new Frame());
}
});
It happens even for non-exclusive fullscreen mode too (before the
JDK-8051617[0] fix).
Currently we are dispatching events in XToolkit under the awtLock. The
fix simply releases this acquired awtLock to avoid deadlock.
However we have a couple of issues ([1], [2]) with similar fixes. This
repetitive pattern doesn't look good to me,
so I created JDK-8129119 [3] to consider releasing awtLock upon
dispatchEvent call in XToolkit.
[0] https://bugs.openjdk.java.net/browse/JDK-8051617 Fullscreen mode is
not working properly on Xorg
[1] https://bugs.openjdk.java.net/browse/JDK-7158311
GraphicsDevice.setDisplayMode(...) leads to hang when DISPLAY variable
points to Oracle Linux
[2] https://bugs.openjdk.java.net/browse/JDK-7155963 Deadlock in
SystemFlavorMap.getFlavorsForNative and SunToolkit.awtLock
[3] https://bugs.openjdk.java.net/browse/JDK-8129119 Consider reducing
the time while the AWTLock is held
--
Thanks,
Alexander.
