Run java_g (or java fastdebug) with the following arguments:
-Xbatch -Xcomp -XX:+PrintOpto -jar Java2Demo122.jar -runs=5 -ccthread

After about 8100 compilations, you will see many lines of this form:
8122 DemoSurface::createGraphics2D (145 bytes)

(See a larger example below.)

The problem is an uncommon trap that forces the method to be recompiled,
but without removing the occasion for the trap. There is a class which
the compiler thinks is unloaded, but the runtime thinks is already loaded.
The class is java/awt/RenderingHints$Key in this case.



8095 java.awt.Font$FontLineMetrics::getHeight (5 bytes)
8096s java.awt.geom.GeneralPath::reset (11 bytes)
8097 demos.Composite.ACrules::drawCompBI (467 bytes)
8098 java.awt.Font$FontLineMetrics::getDescent (5 bytes)
8099 DemoSurface::getSleepAmount (5 bytes)
8100 DemoSurface::createGraphics2D (145 bytes)
8101 DemoSurface::createGraphics2D (145 bytes)
8102 java.awt.geom.RoundRectangle2D$Float::<init> (18 bytes)
8103 java.awt.geom.RoundRectangle2D$Float::setRoundRect (34 bytes)
8104 java.awt.geom.RoundRectIterator::<clinit> (533 bytes)
8105 java.awt.geom.RoundRectIterator::<init> (104 bytes)
8106 java.awt.geom.RoundRectangle2D$Float::getX (6 bytes)
8107 java.awt.geom.RoundRectangle2D$Float::getY (6 bytes)
8108 java.awt.geom.RoundRectangle2D$Float::getWidth (6 bytes)
8109 java.awt.geom.RoundRectangle2D$Float::getHeight (6 bytes)
8110 java.awt.geom.RoundRectangle2D$Float::getArcWidth (6 bytes)
8111 java.awt.geom.RoundRectangle2D$Float::getArcHeight (6 bytes)
8112 java.awt.geom.RoundRectIterator::isDone (17 bytes)
8113 java.awt.image.IndexColorModel::<init> (319 bytes)
8114 Java2Demo$J2DIcon::paintIcon (71 bytes)
8115 DemoSurface::createGraphics2D (145 bytes)
8116 DemoSurface::createGraphics2D (145 bytes)
8117 DemoSurface::createGraphics2D (145 bytes)
8118 DemoSurface::createGraphics2D (145 bytes)
8119 DemoSurface::createGraphics2D (145 bytes)
8120 DemoSurface::createGraphics2D (145 bytes)
8121 DemoSurface::createGraphics2D (145 bytes)
8122 DemoSurface::createGraphics2D (145 bytes)
8123 DemoSurface::createGraphics2D (145 bytes)
8124 DemoSurface::createGraphics2D (145 bytes)
8125 DemoSurface::createGraphics2D (145 bytes)
8126 DemoSurface::createGraphics2D (145 bytes)