1 /* 2 * Copyright (c) 2015, 2016, 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 * @run main/othervm DoubleUpcall 27 */ 28 29 import java.lang.invoke.MethodHandles; 30 import java.nicl.Libraries; 31 import java.nicl.metadata.NativeCallback; 32 import java.nicl.metadata.NativeHeader; 33 import java.nicl.metadata.NativeLocation; 34 import java.nicl.metadata.NativeType; 35 36 public class DoubleUpcall { 37 private static final boolean DEBUG = false; 38 39 @NativeHeader 40 public static interface upcall { 41 @NativeCallback("(dd)d") 42 @FunctionalInterface 43 static interface cb { 44 @NativeLocation(file="dummy", line=47, column=11, USR="c:@F@slowsort") 45 public double fn(double d1, double d2); 46 } 47 48 @NativeLocation(file="dummy", line=47, column=11, USR="c:@F@double_upcall") 49 @NativeType(layout="(p:(DD)DDD)D", ctype="double (double_upcall_cb, double, double)", name="double_upcall") 50 public abstract double double_upcall(cb cb, double d1, double d2); 51 } 52 53 public static class cbImpl implements upcall.cb { 54 @Override 55 public double fn(double d1, double d2) { 56 if (DEBUG) { 57 System.err.println("fn(" + d1 + ", " + d2 + ")"); 58 } 59 60 assertEquals(1.23, d1, 0.1); 61 assertEquals(1.11, d2, 0.1); 62 63 return d1 + d2; 64 } 65 } 66 67 public void test() { 68 upcall i = Libraries.bind(upcall.class, Libraries.loadLibrary(MethodHandles.lookup(), "Upcall")); 69 upcall.cb v = new cbImpl(); 70 71 double d = i.double_upcall(v, 1.23, 1.11); 72 73 if (DEBUG) { 74 System.err.println("back in test()"); 75 System.err.println("call returned: " + d); 76 } 77 78 assertEquals(2.34, d, 0.1); 79 } 80 81 private static void assertEquals(double expected, double actual, double maxDiff) { 82 if (Math.abs(expected - actual) > maxDiff) { 83 throw new RuntimeException("actual: " + actual + " does not match expected: " + expected); 84 } 85 } 86 87 public static void main(String[] args) { 88 new DoubleUpcall().test(); 89 } 90 } --- EOF ---