Hi Sergey,
As you said there are 2 issues here. The first is about
KeyboardFocusManager initialization in the main event loop.
And the second about initialization of the KeyboardManagerManager itself
where keystrokes are shared between contexts.
Or do you mean if I remove the keystrokes sharing then the
KeyboardFocusManager can be initialized in the toolkit thread? Is that
what you mean?
--Semyon
On 7/22/2015 8:20 PM, Sergey Bylokhov wrote:
It is unclear why it is unrelated, the stack trace from the bug:
java.lang.ExceptionInInitializerError
at sun.misc.Unsafe.ensureClassInitialized(Native Method)
at
sun.awt.AWTAccessor.getKeyboardFocusManagerAccessor(AWTAccessor.java:966)
at
sun.awt.KeyboardFocusManagerPeerImpl.<clinit>(KeyboardFocusManagerPeerImpl.java:46)
at sun.awt.X11.XToolkit.run(XToolkit.java:611)
at sun.awt.X11.XToolkit.run(XToolkit.java:550)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at java.awt.AWTKeyStroke.getCachedStroke(AWTKeyStroke.java:255)
at java.awt.AWTKeyStroke.getAWTKeyStroke(AWTKeyStroke.java:394)
at java.awt.KeyboardFocusManager.<clinit>(KeyboardFocusManager.java:332)
... 6 more
On 22.07.15 17:09, Semyon Sadetsky wrote:
Hi Sergey,
From the process point of view it's better to fix the issue you've
found in another ticket. The failed test is not related to the
keystrokes caching.
So I suggest to push this fix as it is and file another JIRA for the
keystrokes.
--Semyon
On 7/22/2015 3:58 PM, Sergey Bylokhov wrote:
Hi, Semyon.
NPE occurs when we initialize KFM on the Toolkit thread, but this is
only a part of the bug, another issue is that we will use cached
keystrokes on the toolkit thread. But this keystrokes is bound to
the appcontext so we should not use objects which connect to the
application on the toolkit thread. This code should be carefully
checked to remove appcontext related stuff from the toolkit thread.
On 21.07.15 12:40, Semyon Sadetsky wrote:
Hello,
Please review fix for JDK9:
bug: https://bugs.openjdk.java.net/browse/JDK-8130895
webrev: http://cr.openjdk.java.net/~ssadetsky/8130895/webrev.00/
realSync() used in the test's TestRunnable class causes events come
to the XAWT event loop but there are no any windows created at the
moment and the system application context is not initialized. This
results in attempt to create the KeyboardFocusManager instance on
the XAWT's thread group during the XEvent dispatching. That in its
turn causes NPE.
The solution: since KeyboardFocusManager should never be
instantiated in the toolkit event loop, the corresponding check was
added.
--Semyon
--
Best regards, Sergey.
--
Best regards, Sergey.
