1 /*
   2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /*
  27  * @test
  28  * @bug 8195160
  29  * @summary Test to check if rsocket is available
  30  * @requires (os.family == "linux")
  31  * @library /test/lib
  32  * @build jdk.test.lib.Platform
  33  * @run main/native RsocketTest
  34  */
  35 
  36 import java.io.IOException;
  37 
  38 public class RsocketTest {
  39     private static boolean supported;
  40     private static boolean checked;
  41 
  42     static {
  43         System.loadLibrary("RsocketTest");
  44     }
  45 
  46     public static boolean isRsocketAvailable()
  47             throws IOException {
  48         if (!checked) {
  49             checked = true;
  50             supported = isRsocketAvailable0();
  51         }
  52         if (!supported) {
  53             checkThrowsUOE(jdk.net.RdmaSockets::openSocket);
  54             checkThrowsUOE(jdk.net.RdmaSockets::openServerSocket);
  55             checkThrowsUOE(jdk.net.RdmaSockets::openSocketChannel);
  56             checkThrowsUOE(jdk.net.RdmaSockets::openServerSocketChannel);
  57             checkThrowsUOE(jdk.net.RdmaSockets::openSelector);
  58         }
  59         return supported;
  60     }
  61 
  62     static void checkThrowsUOE(ThrowingRunnable runnable) throws IOException {
  63         try {
  64             runnable.run();
  65             throw new RuntimeException("Unexpected creation");
  66         } catch (UnsupportedOperationException expected) { }
  67     }
  68     interface ThrowingRunnable { void run() throws IOException; }
  69 
  70     private static native boolean isRsocketAvailable0();
  71 
  72     public static void main(String[] args) throws Exception {
  73          System.out.println("testing rsocket!");
  74     }
  75 }