Issue: NPE in GlassScene.frameRendered(). Cause: scenePaintListener is set in setTKScenePaintListener(), used in frameRendered() and set to null in dispose(). setTKScenePaintListener() and dispose() are called on JavaFX Application Thread and frameRendered() is called by QuantumRenderer thread. setTKScenePaintListener() and frameRendered() are synchronized but dispose() is not.
Fix: dispose() should use the synchronized setTKScenePaintListener() to set scenePaintListener to null. Verification: This is a very rare issue and cannot be reliably reproduced with a test case. ------------- Commits: - ca95597f: [WIP]8223296: NullPointerException in GlassScene.java at line 325 Changes: https://git.openjdk.java.net/jfx/pull/64/files Webrev: https://webrevs.openjdk.java.net/jfx/64/webrev.00 Issue: https://bugs.openjdk.java.net/browse/JDK-8223296 Stats: 3 lines in 1 file changed: 1 ins; 1 del; 1 mod Patch: https://git.openjdk.java.net/jfx/pull/64.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/64/head:pull/64 PR: https://git.openjdk.java.net/jfx/pull/64
