21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.event.oldobject;
  27 
  28 import java.lang.reflect.Array;
  29 import java.util.ArrayList;
  30 import java.util.List;
  31 
  32 import jdk.jfr.Recording;
  33 import jdk.jfr.consumer.RecordedClass;
  34 import jdk.jfr.consumer.RecordedEvent;
  35 import jdk.jfr.consumer.RecordedObject;
  36 import jdk.jfr.internal.test.WhiteBox;
  37 import jdk.test.lib.Asserts;
  38 import jdk.test.lib.jfr.EventNames;
  39 import jdk.test.lib.jfr.Events;
  40 
  41 /*
  42  * @test
  43  * @key jfr

  44  * @requires vm.gc == "null"
  45  * @library /test/lib /test/jdk
  46  * @modules jdk.jfr/jdk.jfr.internal.test
  47  * @run main/othervm -XX:TLABSize=2k jdk.jfr.event.oldobject.TestClassLoaderLeak
  48  */
  49 public class TestClassLoaderLeak {
  50 
  51     public static List<Object> classObjects = new ArrayList<>(OldObjects.MIN_SIZE);
  52 
  53     public static void main(String[] args) throws Exception {
  54         WhiteBox.setWriteAllObjectSamples(true);
  55 
  56         try (Recording r = new Recording()) {
  57             r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity");
  58             r.start();
  59             TestClassLoader testClassLoader = new TestClassLoader();
  60             for (Class<?> clazz : testClassLoader.loadClasses(OldObjects.MIN_SIZE / 20)) {
  61                 // Allocate array to trigger sampling code path for interpreter / c1
  62                 for (int i = 0; i < 20; i++) {
  63                     Object classArray = Array.newInstance(clazz, 20);

  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.event.oldobject;
  27 
  28 import java.lang.reflect.Array;
  29 import java.util.ArrayList;
  30 import java.util.List;
  31 
  32 import jdk.jfr.Recording;
  33 import jdk.jfr.consumer.RecordedClass;
  34 import jdk.jfr.consumer.RecordedEvent;
  35 import jdk.jfr.consumer.RecordedObject;
  36 import jdk.jfr.internal.test.WhiteBox;
  37 import jdk.test.lib.Asserts;
  38 import jdk.test.lib.jfr.EventNames;
  39 import jdk.test.lib.jfr.Events;
  40 
  41 /**
  42  * @test
  43  * @key jfr
  44  * @requires vm.hasJFR
  45  * @requires vm.gc == "null"
  46  * @library /test/lib /test/jdk
  47  * @modules jdk.jfr/jdk.jfr.internal.test
  48  * @run main/othervm -XX:TLABSize=2k jdk.jfr.event.oldobject.TestClassLoaderLeak
  49  */
  50 public class TestClassLoaderLeak {
  51 
  52     public static List<Object> classObjects = new ArrayList<>(OldObjects.MIN_SIZE);
  53 
  54     public static void main(String[] args) throws Exception {
  55         WhiteBox.setWriteAllObjectSamples(true);
  56 
  57         try (Recording r = new Recording()) {
  58             r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity");
  59             r.start();
  60             TestClassLoader testClassLoader = new TestClassLoader();
  61             for (Class<?> clazz : testClassLoader.loadClasses(OldObjects.MIN_SIZE / 20)) {
  62                 // Allocate array to trigger sampling code path for interpreter / c1
  63                 for (int i = 0; i < 20; i++) {
  64                     Object classArray = Array.newInstance(clazz, 20);