jdk
1/*
2* Copyright (c) 2014, 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.
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9* This code is distributed in the hope that it will be useful, but WITHOUT
10* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12* version 2 for more details (a copy is included in the LICENSE file that
13* accompanied this code).
14*
15* You should have received a copy of the GNU General Public License version
16* 2 along with this work; if not, write to the Free Software Foundation,
17* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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22*/
23
24/*
25* @test
26* @bug 8197901 8209758
27* @summary Redefine classes with enabling logging to verify Klass:external_name() during GC.
28* @comment This test is simplified version of serviceability/jvmti/RedefineClasses/RedefineRunningMethods.java.
29* @library /test/lib
30* @modules java.compiler
31* java.instrument
32* @requires vm.jvmti
33* @run main RedefineClassHelper
34* @run main/othervm -Xmx256m -XX:MaxMetaspaceSize=64m -javaagent:redefineagent.jar -Xlog:all=trace:file=all.log RedefineClasses
35*/
36
37// package access top-level class to avoid problem with RedefineClassHelper
38// and nested types.
39class RedefineClasses_B {40public static void test() {41}42}
43
44public class RedefineClasses {45static Object[] obj = new Object[20];46public static String newB =47"class RedefineClasses_B {" +48" public static void test() { " +49" }" +50"}";51
52public static void main(String[] args) throws Exception {53RedefineClassHelper.redefineClass(RedefineClasses_B.class, newB);54RedefineClasses_B.test();55for (int i = 0; i < 20 ; i++) {56obj[i] = new byte[1024 * 1024];57System.gc();58}59}60}
61