1 /*
   2  * Copyright (c) 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  * @modules java.base/jdk.internal.misc
  27  */
  28 
  29 import java.nicl.*;
  30 import java.nicl.metadata.*;
  31 import java.nicl.metadata.Array;
  32 import java.nicl.types.*;
  33 
  34 public class StructTest {
  35     public static final boolean DEBUG = Boolean.getBoolean("StructTest.DEBUG");
  36 
  37     public static final long TOTAL_SIZE = 16;
  38     public static final long A_OFFSET  = 0;
  39     public static final long A_LENGTH  = 4;
  40     public static final long M_OFFSET  = 256;
  41     public static final long MA_OFFSET = 512;
  42     public static final int MA_LENGTH = 2;
  43 
  44     public static long alignUp(long n, long alignment) {
  45         return (n + alignment - 1) & ~(alignment - 1);
  46     }
  47 
  48     @C(file="dummy", line=47, column=11, USR="c:@S@MyStruct")
  49     @NativeType(layout="[4i]", ctype="struct MyStruct", size=16l, isRecordType=true)

  50     static interface MyStruct extends Struct<MyStruct> {
  51         @C(file="dummy", line=47, column=11, USR="c:@SA@MyStruct@field1")
  52         @NativeType(layout="4i", ctype="off_t", size=4l)
  53         @Array(elementType="int", elementSize=4l, length=4l)
  54         @Offset(offset=0l)
  55         int[] a$get();
  56         void a$set(int[] a);
  57     }
  58 
  59     public int buildInt(long baseValue) {
  60         int tmp = 0;
  61 
  62         for (int i = 0; i < 4; i++) {
  63             tmp |= baseValue++ << (i * 8);
  64         }
  65 
  66         return tmp;
  67     }
  68 
  69 
  70     public long buildLong(long baseValue) {
  71         long tmp = 0;
  72 
  73         for (int i = 0; i < 8; i++) {
  74             tmp |= baseValue++ << (i * 8);
  75         }
  76 
  77         return tmp;
  78     }
  79 
  80     public void testIntArray(MyStruct s, Pointer<Byte> p) {
  81         {
  82             long expected = A_OFFSET / 8;
  83 
  84             int[] ia = s.a$get();
  85             assertEquals(A_LENGTH, ia.length);
  86 
  87             for (int i = 0; i < ia.length; i++, expected += 4) {
  88                 if (DEBUG) {
  89                     System.err.println("ia[" + i + "] = 0x" + Integer.toHexString(ia[i]));
  90                 }
  91                 try {
  92                     assertEquals(buildInt(expected), ia[i]);
  93                 } catch (Exception e) {
  94                     throw new RuntimeException("Failed to verify ia[" + i + "]", e);
  95                 }
  96             }
  97         }
  98 
  99         {
 100             int counter = 0x80;
 101 
 102             int[] ia = new int[4];
 103             for (int i = 0; i < ia.length; i++, counter += 4) {
 104                 ia[i] = buildInt(counter);
 105             }
 106             s.a$set(ia);
 107         }
 108 
 109         {
 110             int expected = 0x80;
 111 
 112             int[] ia = s.a$get();
 113             assertEquals(A_LENGTH, ia.length);
 114 
 115             for (int i = 0; i < ia.length; i++, expected += 4) {
 116                 int val = ia[i];
 117                 if (DEBUG) {
 118                     System.err.println("ia[" + i + "] = 0x" + Integer.toHexString(val));
 119                 }
 120                 try {
 121                     assertEquals(buildInt(expected), val);
 122                 } catch (Exception e) {
 123                     throw new RuntimeException("Failed to verify ia[" + i + "]", e);
 124                 }
 125             }
 126         }
 127     }
 128 
 129     private static void assertEquals(int expected, int actual) {
 130         if (expected != actual) {
 131             throw new RuntimeException("actual: 0x" + Long.toHexString(actual) + " does not match expected: 0x" + Long.toHexString(expected));
 132         }
 133     }
 134 
 135     private static void assertEquals(long expected, long actual) {
 136         if (expected != actual) {
 137             throw new RuntimeException("actual: 0x" + Long.toHexString(actual) + " does not match expected: 0x" + Long.toHexString(expected));
 138         }
 139     }
 140 
 141     public void test() {
 142         try (Scope scope = Scope.newNativeScope()) {
 143             MyStruct s = scope.allocateStruct(MyStruct.class);
 144             long size = TOTAL_SIZE;
 145             Pointer<Byte> p = scope.allocate(NativeTypes.UINT8, size);
 146 
 147             for (int i = 0; i < size; i++) {
 148                 p.offset(i).set((byte)i);
 149             }
 150             Pointer.copy(p, s.ptr(), size);
 151 
 152             testIntArray(s, p);
 153         } catch (IllegalAccessException iae) {
 154             throw new RuntimeException("Unexpected exception " + iae);
 155         }
 156     }
 157 
 158     public static void main(String[] args) {
 159         StructTest t = new StructTest();
 160         t.test();
 161     }
 162 }
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