/*
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 * 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.
 *
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 */

/* @test
 * @bug 8195160
 * @summary Test RdmaSocket with OP_WRITE would get selected only once
 * @requires (os.family == "linux")
 * @library .. /test/lib
 * @build RsocketTest
 * @run main/othervm -Djava.net.preferIPv4Stack=true SelectWrite
 */

import java.nio.channels.Selector;
import java.nio.channels.SelectionKey;
import java.nio.channels.SocketChannel;
import jdk.net.Sockets;

public class SelectWrite implements Runnable {

    static SocketChannel sc;
    static ByteServer server;

    public static void main(String[] argv) throws Exception {
        if (!RsocketTest.isRsocketAvailable())
            return;

        try {
            server = new ByteServer();
            sc = Sockets.openRdmaSocketChannel();

            Thread t = new Thread(new SelectWrite());
            t.start();

            server.acceptConnection();

            try (Selector sel = Sockets.openRdmaSelector()) {
                sc.configureBlocking(false);
                sc.register(sel, SelectionKey.OP_WRITE);
                sel.select();
                sel.selectedKeys().clear();
                if (sel.select() == 0) {
                    throw new Exception("Select returned zero");
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException("Test Failed!");
        }
    }

    public void run() {
        try {
            sc.connect(server.address());
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException("Test Failed!");
        }
    }
}