/*

 * Copyright (c) 2014, 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.

 */

/*

 * @test

 * @bug 8035897

 * @summary FD_SETSIZE should be set on macosx

 * @run main/othervm AnotherSelectFdsLimit 1023

 * @run main/othervm AnotherSelectFdsLimit 1024

 * @run main/othervm AnotherSelectFdsLimit 1025

 * @run main/othervm AnotherSelectFdsLimit 1600

 */

import java.io.IOException;

import java.net.ServerSocket;

import java.net.SocketTimeoutException;

import java.util.ArrayList;

import java.util.List;

public class AnotherSelectFdsLimit {

    static final int DEFAULT_FDS_TO_USE = 1600;

    public static void main(String [] args) throws Exception {

        if (!System.getProperty("os.name").contains("OS X")) {

            System.out.println("Test only run on MAC. Exiting.");

            return;

        }

        int fdsToUse = DEFAULT_FDS_TO_USE;

        if (args.length == 1)

            fdsToUse = Integer.parseInt(args[0]);

        System.out.println("Using " + fdsToUse + " fds.");

        List<Thread> threads = new ArrayList<>();

        for (int i=0; i<fdsToUse; i++)

            threads.add(new WorkerThread());

        for (Thread t : threads)

            t.start();

        for (Thread t : threads)

            t.join();

    }

    static class WorkerThread extends Thread {

        public void run() {

            try (ServerSocket ss = new ServerSocket(0)) {

                ss.setSoTimeout(2000);

                ss.accept();

            } catch (SocketTimeoutException x) {

                // expected

            } catch (IOException x) {

                throw new java.io.UncheckedIOException(x);

            }

        }

    }

}