91 lines
3.8 KiB
Java
91 lines
3.8 KiB
Java
/*
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* Copyright (c) 2018, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test DictionaryDependsTest
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* @bug 8210094
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* @summary Create ClassLoader dependency from initiating loader to class loader through reflection
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* @requires vm.opt.final.ClassUnloading
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* @modules java.base/jdk.internal.misc
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* java.compiler
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* @library /test/lib
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* @build jdk.test.whitebox.WhiteBox
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* @compile p2/c2.java MyDiffClassLoader.java
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -Xmn8m -XX:+UnlockDiagnosticVMOptions -Xlog:class+unload -XX:+WhiteBoxAPI DictionaryDependsTest
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*/
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import jdk.test.whitebox.WhiteBox;
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import java.lang.reflect.Method;
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import jdk.test.lib.classloader.ClassUnloadCommon;
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public class DictionaryDependsTest {
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public static WhiteBox wb = WhiteBox.getWhiteBox();
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public static final String MY_TEST = "DictionaryDependsTest$c1r";
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static public class c1r {
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private void test() throws Exception {
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// forName loads through reflection and doesn't create dependency
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Class<?> x = Class.forName("p2.c2", true, c1r.class.getClassLoader());
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Method m = x.getMethod("method2");
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java.lang.Object t = x.newInstance();
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m.invoke(t);
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}
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public c1r () throws Exception {
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test();
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ClassUnloadCommon.triggerUnloading(); // should unload p2.c2
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test();
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ClassUnloadCommon.triggerUnloading(); // should unload p2.c2
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}
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}
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public void test() throws Throwable {
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// now use the same loader to load class MyTest
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Class MyTest_class = new MyDiffClassLoader(MY_TEST).loadClass(MY_TEST);
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try {
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// Call MyTest to load p2.c2 twice and call p2.c2.method2
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MyTest_class.newInstance();
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} catch (Exception e) {
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System.out.println("Not expected NSME");
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throw new RuntimeException("Not expecting NSME");
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}
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ClassUnloadCommon.triggerUnloading(); // should not unload anything
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ClassUnloadCommon.failIf(!wb.isClassAlive(MY_TEST), "should not be unloaded");
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ClassUnloadCommon.failIf(!wb.isClassAlive("p2.c2"), "should not be unloaded");
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// Unless MyTest_class is referenced here, the compiler can unload it.
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System.out.println("Should not unload anything before here because " + MyTest_class + " is still alive.");
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}
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public static void main(String args[]) throws Throwable {
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DictionaryDependsTest d = new DictionaryDependsTest();
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d.test();
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ClassUnloadCommon.triggerUnloading(); // should not unload anything
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System.out.println("Should unload MyTest and p2.c2 just now");
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ClassUnloadCommon.failIf(wb.isClassAlive(MY_TEST), "should be unloaded");
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ClassUnloadCommon.failIf(wb.isClassAlive("p2.c2"), "should be unloaded");
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}
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}
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