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/*
* Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import com.sun.beans.finder.ConstructorFinder;
import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/*
* @test
* @bug 8028054
* @summary Tests that cached constructors have synchronized access
* @author Sergey Malenkov
* @modules java.desktop/com.sun.beans.finder
* @compile -XDignore.symbol.file TestConstructorFinder.java
* @run main TestConstructorFinder
*/
public class TestConstructorFinder {
public static void main(String[] args) throws Exception {
List<Class<?>> classes = Task.getClasses(Integer.MAX_VALUE);
List<Constructor> constructors = new ArrayList<>();
for (Class<?> type : classes) {
Collections.addAll(constructors, type.getConstructors());
}
Task.print("found " + constructors.size() + " constructors in " + classes.size() + " classes");
List<Task> tasks = new ArrayList<>();
for (int i = 0; i < 50; i++) {
tasks.add(new Task<Constructor>(constructors) {
@Override
protected void process(Constructor constructor) throws NoSuchMethodException {
ConstructorFinder.findConstructor(constructor.getDeclaringClass(), constructor.getParameterTypes());
}
});
}
int alarm = 0;
while (true) {
int alive = 0;
int working = 0;
for (Task task : tasks) {
if (task.isWorking()) {
working++;
alive++;
} else if (task.isAlive()) {
alive++;
}
}
if (alive == 0) {
break;
}
Task.print(working + " out of " + alive + " threads are working");
if ((working == 0) && (++alarm == 10)) {
throw new RuntimeException("FAIL - DEADLOCK DETECTED");
}
Thread.sleep(1000);
}
}
}
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