78 lines
3.4 KiB
Java
78 lines
3.4 KiB
Java
/*
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* Copyright (c) 2019, 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 TestAnonSymbolLeak
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* @bug 8218755
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* @requires vm.opt.final.ClassUnloading
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* @modules java.base/jdk.internal.misc
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* java.base/jdk.internal.org.objectweb.asm
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* java.management
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* @library /test/lib /runtime/testlibrary
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* @build p1.AnonSymbolLeak
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* @build sun.hotspot.WhiteBox
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* @run main ClassFileInstaller sun.hotspot.WhiteBox
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* sun.hotspot.WhiteBox$WhiteBoxPermission
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* @run main/othervm -Xbootclasspath/a:. -Xmn8m -XX:+UnlockDiagnosticVMOptions -Xlog:class+unload -XX:+WhiteBoxAPI TestAnonSymbolLeak
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*/
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import java.lang.reflect.Method;
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import sun.hotspot.WhiteBox;
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import jdk.test.lib.Asserts;
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public class TestAnonSymbolLeak {
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static String className = "p1.AnonSymbolLeak";
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private static class ClassUnloadTestMain {
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public static void test() throws Exception {
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// Load the AnonSymbolLeak class in a new class loader, run it, which loads
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// an unsafe anonymous class in the same package p1. Then unload it.
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// Then test that the refcount of the symbol created for the prepended name doesn't leak.
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ClassLoader cl = ClassUnloadCommon.newClassLoader();
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Class<?> c = cl.loadClass(className);
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c.getMethod("test").invoke(null);
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cl = null; c = null;
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ClassUnloadCommon.triggerUnloading();
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}
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}
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public static WhiteBox wb = WhiteBox.getWhiteBox();
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public static void main(String... args) throws Exception {
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String oldName = "AnonClass";
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String prependedName = "p1/AnonClass";
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ClassUnloadCommon.failIf(wb.isClassAlive(className), "should not be loaded");
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int countBeforeOld = wb.getSymbolRefcount(oldName);
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int countBefore = wb.getSymbolRefcount(prependedName);
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ClassUnloadTestMain.test();
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ClassUnloadCommon.failIf(wb.isClassAlive(className), "should be unloaded");
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int countAfterOld = wb.getSymbolRefcount(oldName);
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int countAfter = wb.getSymbolRefcount(prependedName);
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Asserts.assertEquals(countBeforeOld, countAfterOld); // no leaks to the old name
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System.out.println("count before and after " + countBeforeOld + " " + countAfterOld);
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Asserts.assertEquals(countBefore, countAfter); // no leaks to the prepended name
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System.out.println("count before and after " + countBefore + " " + countAfter);
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}
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}
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