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1 /* |
1 /* |
2 * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved. |
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. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * |
4 * |
5 * This code is free software; you can redistribute it and/or modify it |
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 |
6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. Oracle designates this |
7 * published by the Free Software Foundation. Oracle designates this |
47 * @run main/othervm -Xlog:class+unload -Xlog:gc -Xmx16m jdk.jfr.event.runtime.TestClassUnloadEvent |
47 * @run main/othervm -Xlog:class+unload -Xlog:gc -Xmx16m jdk.jfr.event.runtime.TestClassUnloadEvent |
48 */ |
48 */ |
49 |
49 |
50 /** |
50 /** |
51 * System.gc() will trigger class unloading if -XX:+ExplicitGCInvokesConcurrent is NOT set. |
51 * System.gc() will trigger class unloading if -XX:+ExplicitGCInvokesConcurrent is NOT set. |
52 * If this flag is set G1 will never unload classes on System.gc() and |
52 * If this flag is set G1 will never unload classes on System.gc(). |
53 * CMS will not guarantee that all semantically dead classes will be unloaded. |
|
54 * As far as the "jfr" key guarantees no VM flags are set from the outside |
53 * As far as the "jfr" key guarantees no VM flags are set from the outside |
55 * it should be enough with System.gc(). |
54 * it should be enough with System.gc(). |
56 */ |
55 */ |
57 public final class TestClassUnloadEvent { |
56 public final class TestClassUnloadEvent { |
58 private final static String TEST_CLASS_NAME = "jdk.jfr.event.runtime.TestClasses"; |
57 private final static String TEST_CLASS_NAME = "jdk.jfr.event.runtime.TestClasses"; |