82 lines
3.0 KiB
Java
82 lines
3.0 KiB
Java
/*
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* Copyright (c) 2013, 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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import com.sun.beans.finder.ConstructorFinder;
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import java.lang.reflect.Constructor;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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/*
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* @test
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* @bug 8028054
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* @summary Tests that cached constructors have synchronized access
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* @author Sergey Malenkov
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* @modules java.desktop/com.sun.beans.finder
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* @compile -XDignore.symbol.file TestConstructorFinder.java
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* @run main TestConstructorFinder
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*/
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public class TestConstructorFinder {
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public static void main(String[] args) throws Exception {
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List<Class<?>> classes = Task.getClasses(Integer.MAX_VALUE);
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List<Constructor> constructors = new ArrayList<>();
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for (Class<?> type : classes) {
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Collections.addAll(constructors, type.getConstructors());
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}
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Task.print("found " + constructors.size() + " constructors in " + classes.size() + " classes");
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List<Task> tasks = new ArrayList<>();
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for (int i = 0; i < 50; i++) {
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tasks.add(new Task<Constructor>(constructors) {
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@Override
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protected void process(Constructor constructor) throws NoSuchMethodException {
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ConstructorFinder.findConstructor(constructor.getDeclaringClass(), constructor.getParameterTypes());
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}
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});
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}
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int alarm = 0;
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while (true) {
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int alive = 0;
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int working = 0;
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for (Task task : tasks) {
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if (task.isWorking()) {
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working++;
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alive++;
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} else if (task.isAlive()) {
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alive++;
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}
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}
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if (alive == 0) {
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break;
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}
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Task.print(working + " out of " + alive + " threads are working");
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if ((working == 0) && (++alarm == 10)) {
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throw new RuntimeException("FAIL - DEADLOCK DETECTED");
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}
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Thread.sleep(1000);
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}
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}
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}
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