/*

 * 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

 */

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);

        }

    }

}