<Swing Dev> [14] RFR [JDK-8221312] test/jdk/sanity/client/SwingSet/src/ColorChooserDemoTest.java failed

[abdul.kolarkunnu at oracle.com]

Hi All,

Please review fix for the below bug:

Bug: https://bugs.openjdk.java.net/browse/JDK-8221312

Webrev: http://cr.openjdk.java.net/~akolarkunnu/8221312/webrev.00/ 
<http://cr.openjdk.java.net/%7Eakolarkunnu/8221312/webrev.00/>

<http://cr.openjdk.java.net/%7Eakolarkunnu/8221312/webrev.00/>

Description:

It's a machine dependent issue, in some machines it works perfectly and 
in some machines this issue reproducible consistently.

Also this issue can reproduce by just launching the demo itself, 
animation in the demo will become so slow.

So here the issue is in the demo code, In demo it is invoking 
Thread.yield() from the animation loop.

Thread context switch is not happening in some iterations, so EDT and 
Main threads are not getting CPU cycle. So test case execution is 
getting slow and getting timed out.

 From Thread.yield javadoc:

/A hint to the scheduler that the current thread is willing to yield its 
current use of a processor. The scheduler is free to ignore this hint./

/It is rarely appropriate to use this method. It may be useful for 
debugging or testing purposes, where it may help to reproduce bugs due 
to race conditions./

//

Fix:

Invoked repaint() in SwingUtilities.invokeAndWait(), so that thread 
switch will happen and complete the repaint and proceed for next iteration.


Testing:

Issue was reproducible for me in a local machine and it is not 
reproducible after the fix.

Also issue was reproducible in oracle internal test infrastructure, 
tested with fix and it works fine.

-Muneer

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