4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import sun.hotspot.WhiteBox;
  25 
  26 import java.lang.reflect.Method;
  27 import java.net.URL;
  28 import java.net.URLClassLoader;
  29 
  30 /*
  31  * @test MethodUnloadingTest
  32  * @bug 8029443
  33  * @summary "Tests the unloading of methods to to class unloading"
  34  * @library /testlibrary /testlibrary/whitebox
  35  * @build TestMethodUnloading
  36  * @build WorkerClass
  37  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  38  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  39  * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:-BackgroundCompilation -XX:-UseCompressedOops -XX:CompileOnly=TestMethodUnloading::doWork TestMethodUnloading
  40  */
  41 public class TestMethodUnloading {
  42     private static final String workerClassName = "WorkerClass";
  43     private static int work = -1;
  44 
  45     private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
  46     private static int COMP_LEVEL_SIMPLE = 1;
  47     private static int COMP_LEVEL_FULL_OPTIMIZATION = 4;
  48 
  49     /**
  50      * Does some work by either using the workerClass or locally producing values.
  51      * @param workerClass Class performing some work (will be unloaded)
  52      * @param useWorker If true the workerClass is used
  53      */
  54     static private void doWork(Class<?> workerClass, boolean useWorker) throws InstantiationException, IllegalAccessException {
  55         if (useWorker) {
  56             // Create a new instance
  57             Object worker = workerClass.newInstance();
  58             // We would like to call a method of WorkerClass here but we cannot cast to WorkerClass

   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import jdk.testlib.WhiteBox;
  25 
  26 import java.lang.reflect.Method;
  27 import java.net.URL;
  28 import java.net.URLClassLoader;
  29 
  30 /*
  31  * @test MethodUnloadingTest
  32  * @bug 8029443
  33  * @summary "Tests the unloading of methods to to class unloading"
  34  * @library /testlibrary /../../test/lib
  35  * @build TestMethodUnloading
  36  * @build WorkerClass
  37  * @run main ClassFileInstaller jdk.testlib.WhiteBox
  38  *                              jdk.testlib.WhiteBox$WhiteBoxPermission
  39  * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:-BackgroundCompilation -XX:-UseCompressedOops -XX:CompileOnly=TestMethodUnloading::doWork TestMethodUnloading
  40  */
  41 public class TestMethodUnloading {
  42     private static final String workerClassName = "WorkerClass";
  43     private static int work = -1;
  44 
  45     private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
  46     private static int COMP_LEVEL_SIMPLE = 1;
  47     private static int COMP_LEVEL_FULL_OPTIMIZATION = 4;
  48 
  49     /**
  50      * Does some work by either using the workerClass or locally producing values.
  51      * @param workerClass Class performing some work (will be unloaded)
  52      * @param useWorker If true the workerClass is used
  53      */
  54     static private void doWork(Class<?> workerClass, boolean useWorker) throws InstantiationException, IllegalAccessException {
  55         if (useWorker) {
  56             // Create a new instance
  57             Object worker = workerClass.newInstance();
  58             // We would like to call a method of WorkerClass here but we cannot cast to WorkerClass