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
26 package jdk.jfr.event.runtime;
27
28 import java.time.Duration;
29 import java.util.List;
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 * @summary The test verifies that a class unload event is created when class is unloaded
43 * @key jfr
44 * @requires vm.hasJFR
45 * @library /test/lib /test/jdk
46 * @build jdk.jfr.event.runtime.TestClasses
47 * @run main/othervm -Xlog:class+unload -Xlog:gc -Xmx16m jdk.jfr.event.runtime.TestClassUnloadEvent
48 */
49
50 public final class TestClassUnloadEvent {
51 private final static String TEST_CLASS_NAME = "jdk.jfr.event.runtime.TestClasses";
52 private final static String EVENT_PATH = EventNames.ClassUnload;
53
54 // Declare unloadableClassLoader as "public static"
55 // to prevent the compiler to optimize away all unread writes
56 public static TestClassLoader unloadableClassLoader;
57
58 public static void main(String[] args) throws Throwable {
59 Recording recording = new Recording();
60 recording.enable(EVENT_PATH).withThreshold(Duration.ofMillis(0));
61 unloadableClassLoader = new TestClassLoader();
62 recording.start();
63 unloadableClassLoader.loadClass(TEST_CLASS_NAME);
64 unloadableClassLoader = null;
65 System.gc();
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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
26 package jdk.jfr.event.runtime;
27
28 import java.time.Duration;
29 import java.util.List;
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 * @summary The test verifies that a class unload event is created when class is unloaded
43 * @key jfr
44 * @requires vm.hasJFR
45 * @library /test/lib /test/jdk
46 * @modules java.base/jdk.internal.misc
47 * @build jdk.jfr.event.runtime.TestClasses
48 * @run main/othervm -Xlog:class+unload -Xlog:gc -Xmx16m jdk.jfr.event.runtime.TestClassUnloadEvent
49 */
50
51 public final class TestClassUnloadEvent {
52 private final static String TEST_CLASS_NAME = "jdk.jfr.event.runtime.TestClasses";
53 private final static String EVENT_PATH = EventNames.ClassUnload;
54
55 // Declare unloadableClassLoader as "public static"
56 // to prevent the compiler to optimize away all unread writes
57 public static TestClassLoader unloadableClassLoader;
58
59 public static void main(String[] args) throws Throwable {
60 Recording recording = new Recording();
61 recording.enable(EVENT_PATH).withThreshold(Duration.ofMillis(0));
62 unloadableClassLoader = new TestClassLoader();
63 recording.start();
64 unloadableClassLoader.loadClass(TEST_CLASS_NAME);
65 unloadableClassLoader = null;
66 System.gc();
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