Mercurial > jdk8-mips64-public > hotspot / changeset

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/compiler/unsafe/UnsafeRaw.java	Tue Sep 23 17:24:34 2014 -0700
     1.3 @@ -0,0 +1,140 @@
     1.4 +/*
     1.5 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + */
    1.26 +
    1.27 +/*
    1.28 + * @test
    1.29 + * @bug 8058744
    1.30 + * @summary Invalid pattern-matching of address computations in raw unsafe
    1.31 + * @library /testlibrary
    1.32 + * @run main/othervm -Xbatch UnsafeRaw
    1.33 + */
    1.34 +
    1.35 +import com.oracle.java.testlibrary.Utils;
    1.36 +import java.util.Random;
    1.37 +
    1.38 +public class UnsafeRaw {
    1.39 +  public static class Tests {
    1.40 +    public static int int_index(sun.misc.Unsafe unsafe, long base, int index) throws Exception {
    1.41 +      return unsafe.getInt(base + (index << 2));
    1.42 +    }
    1.43 +    public static int long_index(sun.misc.Unsafe unsafe, long base, long index) throws Exception {
    1.44 +      return unsafe.getInt(base + (index << 2));
    1.45 +    }
    1.46 +    public static int int_index_back_ashift(sun.misc.Unsafe unsafe, long base, int index) throws Exception {
    1.47 +      return unsafe.getInt(base + (index >> 2));
    1.48 +    }
    1.49 +    public static int int_index_back_lshift(sun.misc.Unsafe unsafe, long base, int index) throws Exception {
    1.50 +      return unsafe.getInt(base + (index >>> 2));
    1.51 +    }
    1.52 +    public static int long_index_back_ashift(sun.misc.Unsafe unsafe, long base, long index) throws Exception {
    1.53 +      return unsafe.getInt(base + (index >> 2));
    1.54 +    }
    1.55 +    public static int long_index_back_lshift(sun.misc.Unsafe unsafe, long base, long index) throws Exception {
    1.56 +      return unsafe.getInt(base + (index >>> 2));
    1.57 +    }
    1.58 +    public static int int_const_12345678_index(sun.misc.Unsafe unsafe, long base) throws Exception {
    1.59 +      int idx4 = 0x12345678;
    1.60 +      return unsafe.getInt(base + idx4);
    1.61 +    }
    1.62 +    public static int long_const_1234567890abcdef_index(sun.misc.Unsafe unsafe, long base) throws Exception {
    1.63 +      long idx5 = 0x1234567890abcdefL;
    1.64 +      return unsafe.getInt(base + idx5);
    1.65 +    }
    1.66 +    public static int int_index_mul(sun.misc.Unsafe unsafe, long base, int index) throws Exception {
    1.67 +      return unsafe.getInt(base + (index * 4));
    1.68 +    }
    1.69 +    public static int long_index_mul(sun.misc.Unsafe unsafe, long base, long index) throws Exception {
    1.70 +      return unsafe.getInt(base + (index * 4));
    1.71 +    }
    1.72 +    public static int int_index_mul_scale_16(sun.misc.Unsafe unsafe, long base, int index) throws Exception {
    1.73 +      return unsafe.getInt(base + (index * 16));
    1.74 +    }
    1.75 +    public static int long_index_mul_scale_16(sun.misc.Unsafe unsafe, long base, long index) throws Exception {
    1.76 +      return unsafe.getInt(base + (index * 16));
    1.77 +    }
    1.78 +  }
    1.79 +
    1.80 +  public static void main(String[] args) throws Exception {
    1.81 +    sun.misc.Unsafe unsafe = Utils.getUnsafe();
    1.82 +    final int array_size = 128;
    1.83 +    final int element_size = 4;
    1.84 +    final int magic = 0x12345678;
    1.85 +
    1.86 +    Random rnd = new Random();
    1.87 +
    1.88 +    long array = unsafe.allocateMemory(array_size * element_size); // 128 ints
    1.89 +    long addr = array + array_size * element_size / 2; // something in the middle to work with
    1.90 +    unsafe.putInt(addr, magic);
    1.91 +    for (int j = 0; j < 100000; j++) {
    1.92 +       if (Tests.int_index(unsafe, addr, 0) != magic) throw new Exception();
    1.93 +       if (Tests.long_index(unsafe, addr, 0) != magic) throw new Exception();
    1.94 +       if (Tests.int_index_mul(unsafe, addr, 0) != magic) throw new Exception();
    1.95 +       if (Tests.long_index_mul(unsafe, addr, 0) != magic) throw new Exception();
    1.96 +       {
    1.97 +         long idx1 = rnd.nextLong();
    1.98 +         long addr1 = addr - (idx1 << 2);
    1.99 +         if (Tests.long_index(unsafe, addr1, idx1) != magic) throw new Exception();
   1.100 +       }
   1.101 +       {
   1.102 +         long idx2 = rnd.nextLong();
   1.103 +         long addr2 = addr - (idx2 >> 2);
   1.104 +         if (Tests.long_index_back_ashift(unsafe, addr2, idx2) != magic) throw new Exception();
   1.105 +       }
   1.106 +       {
   1.107 +         long idx3 = rnd.nextLong();
   1.108 +         long addr3 = addr - (idx3 >>> 2);
   1.109 +         if (Tests.long_index_back_lshift(unsafe, addr3, idx3) != magic) throw new Exception();
   1.110 +       }
   1.111 +       {
   1.112 +         long idx4 = 0x12345678;
   1.113 +         long addr4 = addr - idx4;
   1.114 +         if (Tests.int_const_12345678_index(unsafe, addr4) != magic) throw new Exception();
   1.115 +       }
   1.116 +       {
   1.117 +         long idx5 = 0x1234567890abcdefL;
   1.118 +         long addr5 = addr - idx5;
   1.119 +         if (Tests.long_const_1234567890abcdef_index(unsafe, addr5) != magic) throw new Exception();
   1.120 +       }
   1.121 +       {
   1.122 +         int idx6 = rnd.nextInt();
   1.123 +         long addr6 = addr - (idx6 >> 2);
   1.124 +         if (Tests.int_index_back_ashift(unsafe, addr6, idx6) != magic) throw new Exception();
   1.125 +       }
   1.126 +       {
   1.127 +         int idx7 = rnd.nextInt();
   1.128 +         long addr7 = addr - (idx7 >>> 2);
   1.129 +         if (Tests.int_index_back_lshift(unsafe, addr7, idx7) != magic) throw new Exception();
   1.130 +       }
   1.131 +       {
   1.132 +         int idx8 = rnd.nextInt();
   1.133 +         long addr8 = addr - (idx8 * 16);
   1.134 +         if (Tests.int_index_mul_scale_16(unsafe, addr8, idx8) != magic) throw new Exception();
   1.135 +       }
   1.136 +       {
   1.137 +         long idx9 = rnd.nextLong();
   1.138 +         long addr9 = addr - (idx9 * 16);
   1.139 +         if (Tests.long_index_mul_scale_16(unsafe, addr9, idx9) != magic) throw new Exception();
   1.140 +       }
   1.141 +    }
   1.142 +  }
   1.143 +}