1 /*
   2  * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  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.runtime;
  27 
  28 import java.util.List;
  29 
  30 import jdk.jfr.Recording;
  31 import jdk.jfr.consumer.RecordedEvent;
  32 import jdk.test.lib.Asserts;
  33 import jdk.test.lib.jfr.EventNames;
  34 import jdk.test.lib.jfr.Events;
  35 import jdk.test.lib.jfr.TestClassLoader;
  36 
  37 /**
  38  * @test
  39  * @key jfr
  40  * @requires vm.hasJFR
  41  * @library /test/lib /test/jdk

  42  * @build jdk.jfr.event.runtime.TestClasses
  43  * @run main/othervm jdk.jfr.event.runtime.TestClassLoadingStatisticsEvent
  44  */
  45 /**
  46  * This test will load a number of classes. After each load step we verify that
  47  * the loadedClassCount and unloadedClassCount attributes are correct.
  48  *
  49  * System.gc() will trigger class unloading if -XX:+ExplicitGCInvokesConcurrent
  50  * is NOT set. If this flag is set G1 will never unload classes on System.gc().
  51  * As far as the "jfr" key guarantees no VM flags are set from the
  52  * outside it should be enough with System.gc().
  53  */
  54 public class TestClassLoadingStatisticsEvent {
  55 
  56     private final static String EVENT_PATH = EventNames.ClassLoadingStatistics;
  57     private final static String TESTCLASS_PUBLIC_STATIC =
  58                 "jdk.jfr.event.runtime.TestClasses$TestClassPublicStatic";
  59     private final static String TESTCLASS_PUBLIC_STATIC_INNER =
  60                 "jdk.jfr.event.runtime.TestClasses$TestClassPublicStatic$TestClassPublicStaticInner";
  61 

   1 /*
   2  * Copyright (c) 2013, 2020, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  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.runtime;
  27 
  28 import java.util.List;
  29 
  30 import jdk.jfr.Recording;
  31 import jdk.jfr.consumer.RecordedEvent;
  32 import jdk.test.lib.Asserts;
  33 import jdk.test.lib.jfr.EventNames;
  34 import jdk.test.lib.jfr.Events;
  35 import jdk.test.lib.jfr.TestClassLoader;
  36 
  37 /**
  38  * @test
  39  * @key jfr
  40  * @requires vm.hasJFR
  41  * @library /test/lib /test/jdk
  42  * @modules java.base/jdk.internal.misc
  43  * @build jdk.jfr.event.runtime.TestClasses
  44  * @run main/othervm jdk.jfr.event.runtime.TestClassLoadingStatisticsEvent
  45  */
  46 /**
  47  * This test will load a number of classes. After each load step we verify that
  48  * the loadedClassCount and unloadedClassCount attributes are correct.
  49  *
  50  * System.gc() will trigger class unloading if -XX:+ExplicitGCInvokesConcurrent
  51  * is NOT set. If this flag is set G1 will never unload classes on System.gc().
  52  * As far as the "jfr" key guarantees no VM flags are set from the
  53  * outside it should be enough with System.gc().
  54  */
  55 public class TestClassLoadingStatisticsEvent {
  56 
  57     private final static String EVENT_PATH = EventNames.ClassLoadingStatistics;
  58     private final static String TESTCLASS_PUBLIC_STATIC =
  59                 "jdk.jfr.event.runtime.TestClasses$TestClassPublicStatic";
  60     private final static String TESTCLASS_PUBLIC_STATIC_INNER =
  61                 "jdk.jfr.event.runtime.TestClasses$TestClassPublicStatic$TestClassPublicStaticInner";
  62