<Swing Dev> [9] Review request for 8169922 SwingMark/TextArea: 2-7% regression on Linux, Mac, Windows in 9-b143

[Alexandr Scherbatiy]

Hello,

Could you review the fix:
   bug: https://bugs.openjdk.java.net/browse/JDK-8169922
   webrev: http://cr.openjdk.java.net/~alexsch/8169922/webrev.00

   The fix JDK-8156217 checks presence of the overridden methods with 
floating point arguments.
   The proposed fix caches results of found overridden methods with 
floating point arguments.

   I run the SwingSet2 with the custom test which intensively creates 
JTextField, JPasswordField, JTextArea, and JEditorPane.

   The results of the test running with the following JDK are:
   1. Methods with int arguments are always called without the methods 
overridden check: 45822 // before the fix JDK-8156217
   2. Methods with floating point arguments are always called without 
the methods overridden check: 46175
     performance decreasing: 100 * (46175 - 45822) / 45822 = 0.77%
   3. Methods with floating point arguments are always called with the 
methods overridden check: 48836 // fix JDK-8156217
     performance decreasing: 100 * (48836 - 45822) / 45822 = 6.58%
   4. Methods with floating point arguments are always called and the 
methods overridden checks are cached: 46592 // current fix
     performance decreasing: 100 * (46592 - 45822) / 45822 = 1.68%

  Thanks,
  Alexandr.