88 lines
3.3 KiB
Java
88 lines
3.3 KiB
Java
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/*
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* Copyright (c) 2020, 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
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* @summary Stress defining hidden classes.
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* @requires !vm.graal.enabled
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* @library /test/lib
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* @modules jdk.compiler
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* @run main/othervm StressHiddenClasses
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*/
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import java.lang.invoke.MethodType;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodHandles.Lookup;
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import static java.lang.invoke.MethodHandles.Lookup.ClassOption.*;
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import jdk.test.lib.compiler.InMemoryJavaCompiler;
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// This test is based on vmTestbase/vm/mlvm/anonloader/share/StressClassLoadingTest.java
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public class StressHiddenClasses {
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private static final int PARSE_TIMEOUT = 0;
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private static final int ITERATIONS = 40000;
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static byte klassbuf[] = InMemoryJavaCompiler.compile("TestClass",
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"public class TestClass { " +
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" public static void concat(String one, String two) throws Throwable { " +
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" System.out.println(one + two);" +
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" } } ");
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public void run() throws Exception {
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for (int x = 0; x < ITERATIONS; x++) {
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Thread parserThread = new Thread() {
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public void run() {
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try {
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Lookup lookup = MethodHandles.lookup();
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Class<?> c = lookup.defineHiddenClass(klassbuf, true, NESTMATE).lookupClass();
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} catch (Throwable e) {
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throw new RuntimeException("Unexpected exception: " + e.toString());
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}
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}
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};
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parserThread.start();
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parserThread.join(PARSE_TIMEOUT);
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if (parserThread.isAlive()) {
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System.out.println("parser thread may be hung!");
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StackTraceElement[] stack = parserThread.getStackTrace();
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System.out.println("parser thread stack len: " + stack.length);
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System.out.println(parserThread + " stack trace:");
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for (int i = 0; i < stack.length; ++i) {
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System.out.println(parserThread + "\tat " + stack[i]);
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}
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parserThread.join(); // Wait until either thread finishes or test times out.
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}
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}
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}
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public static void main(String[] args) throws Throwable {
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StressHiddenClasses shc = new StressHiddenClasses();
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shc.run();
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}
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}
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