30 
  31 import jdk.jfr.Recording;
  32 import jdk.jfr.consumer.RecordedClass;
  33 import jdk.jfr.consumer.RecordedClassLoader;
  34 import jdk.jfr.consumer.RecordedEvent;
  35 import jdk.test.lib.Asserts;
  36 import jdk.test.lib.jfr.EventNames;
  37 import jdk.test.lib.jfr.Events;
  38 import jdk.test.lib.jfr.TestClassLoader;
  39 
  40 /**
  41  * @test
  42  * @key jfr
  43  * @requires vm.hasJFR
  44  * @library /test/lib /test/jdk
  45  * @build jdk.jfr.event.runtime.TestClasses
  46  * @run main/othervm jdk.jfr.event.runtime.TestClassLoadEvent
  47  */
  48 public final class TestClassLoadEvent {
  49 
  50     private final static String TEST_CLASS_NAME = "jdk.jfr.event.runtime.TestClasses";
  51     private final static String BOOT_CLASS_LOADER_NAME = "bootstrap";
  52     private final static String SEARCH_CLASS_NAME = "java.lang.Object";
  53     private final static String SEARCH_PACKAGE_NAME = "java/lang";
  54     private final static String SEARCH_MODULE_NAME = "java.base";
  55     private final static String EVENT_NAME = EventNames.ClassLoad;
  56 
  57     public static void main(String[] args) throws Throwable {
  58         Recording recording = new Recording();
  59         recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
  60         TestClassLoader cl = new TestClassLoader();
  61         recording.start();
  62         cl.loadClass(TEST_CLASS_NAME);
  63         recording.stop();
  64 
  65         List<RecordedEvent> events = Events.fromRecording(recording);
  66         boolean isLoaded = false;
  67         for (RecordedEvent event : events) {
  68             RecordedClass loadedClass = event.getValue("loadedClass");
  69             if (SEARCH_CLASS_NAME.equals(loadedClass.getName())) {
  70                 System.out.println(event);
  71                 Events.assertClassPackage(loadedClass, SEARCH_PACKAGE_NAME);
  72                 Events.assertClassModule(loadedClass, SEARCH_MODULE_NAME);
  73                 RecordedClassLoader initiatingClassLoader = event.getValue("initiatingClassLoader");
  74                 Asserts.assertEquals(cl.getClass().getName(), initiatingClassLoader.getType().getName(),
  75                     "Expected type " + cl.getClass().getName() + ", got type " + initiatingClassLoader.getType().getName());
  76                 RecordedClassLoader definingClassLoader = loadedClass.getClassLoader();
  77                 Asserts.assertEquals(BOOT_CLASS_LOADER_NAME, definingClassLoader.getName(),
  78                     "Expected boot loader to be the defining class loader");
  79                 Asserts.assertNull(definingClassLoader.getType(), "boot loader should not have a type");
  80                 isLoaded = true;
  81             }
  82         }
  83         Asserts.assertTrue(isLoaded, "No class load event found for class " + SEARCH_CLASS_NAME);
  84     }
  85 }

  30 
  31 import jdk.jfr.Recording;
  32 import jdk.jfr.consumer.RecordedClass;
  33 import jdk.jfr.consumer.RecordedClassLoader;
  34 import jdk.jfr.consumer.RecordedEvent;
  35 import jdk.test.lib.Asserts;
  36 import jdk.test.lib.jfr.EventNames;
  37 import jdk.test.lib.jfr.Events;
  38 import jdk.test.lib.jfr.TestClassLoader;
  39 
  40 /**
  41  * @test
  42  * @key jfr
  43  * @requires vm.hasJFR
  44  * @library /test/lib /test/jdk
  45  * @build jdk.jfr.event.runtime.TestClasses
  46  * @run main/othervm jdk.jfr.event.runtime.TestClassLoadEvent
  47  */
  48 public final class TestClassLoadEvent {
  49 
  50      private final static String EVENT_NAME = EventNames.JavaThreadStatistics;





  51 
  52     public static void main(String[] args) throws Throwable {
  53         Recording recording = new Recording();
  54         recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(2000));
  55         TestClassLoader cl = new TestClassLoader();
  56         recording.start();
  57         // make something happen
  58         recording.stop();
  59 
  60         List<RecordedEvent> events = Events.fromRecording(recording);
  61         boolean isLoaded = false;
  62         for (RecordedEvent event : events) {
  63           Long safepointId = event.getValue("safepointId");













  64         }

  65     }
  66 }