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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  */
  27 
  28 import java.lang.invoke.MethodHandles;
  29 import java.nicl.*;
  30 import java.nicl.metadata.*;
  31 
  32 public class Hello {
  33     @NativeHeader(libraries = { "Hello" })
  34     static interface hello {
  35         @NativeLocation(file="dummy", line=1, column=1, USR="c:@F@func")
  36         @NativeType(layout="()I", ctype="dummy")
  37         public abstract int func();
  38     }
  39 
  40     public static void main(String[] args) {
  41         // "hello" library mentioned already in annotation (LibraryDependencies)
  42         // No need to explicitly call Libraries.loadLibrary!
  43         hello i = Libraries.bind(MethodHandles.lookup(), hello.class);
  44         int value = i.func();
  45         if (value != 42) {
  46             throw new RuntimeException("Expected 42, but got " + i);
  47         }
  48     }
  49 }