Looks fine.

On 01.08.2019 07:58, [email protected] wrote:
Hi Sergey,

I tested SwingSet2 demo also on the same machine and issue is reproducible.

So applied same fix in SwingSet2 also, and issue not reproducible after the fix.

New webrev :http://cr.openjdk.java.net/~akolarkunnu/8221312/webrev.01/ 
<http://cr.openjdk.java.net/%7Eakolarkunnu/8221312/webrev.01/>

-Muneer


On 01/08/19 7:17 AM, Sergey Bylokhov wrote:
Hi, Abdul.

I guess you need to update the SwingSet2 demo as well.

On 30.07.2019 04:30, [email protected] wrote:
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






--
Best regards, Sergey.

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