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test/compiler/intrinsics/unsafe/UnsafeTwoCASLong.java

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rev 12711 : 8181292: Backport Rename internal Unsafe.compare methods from 10 to 9
Reviewed-by: psandoz, dholmes, thartmann
Contributed-by: ron.pressler@oracle.com, claes.redestad@oracle.com
   1 /*
   2  * Copyright (c) 2015, 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  */


  55 
  56         try {
  57             Field vField = UnsafeTwoCASLong.class.getDeclaredField("v");
  58             V_OFFSET = UNSAFE.objectFieldOffset(vField);
  59         } catch (Exception e) {
  60             throw new RuntimeException(e);
  61         }
  62     }
  63 
  64     long v;
  65 
  66     @Test
  67     public void testFieldInstance() {
  68         UnsafeTwoCASLong t = new UnsafeTwoCASLong();
  69         for (int c = 0; c < ITERS; c++) {
  70             testAccess(t, V_OFFSET);
  71         }
  72     }
  73 
  74     static void testAccess(Object base, long offset) {
  75         UNSAFE.compareAndSwapLong(base, offset, 1L, 2L);
  76         UNSAFE.compareAndSwapLong(base, offset, 2L, 1L);
  77     }
  78 
  79 }
  80 
   1 /*
   2  * Copyright (c) 2015, 2017, 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  */


  55 
  56         try {
  57             Field vField = UnsafeTwoCASLong.class.getDeclaredField("v");
  58             V_OFFSET = UNSAFE.objectFieldOffset(vField);
  59         } catch (Exception e) {
  60             throw new RuntimeException(e);
  61         }
  62     }
  63 
  64     long v;
  65 
  66     @Test
  67     public void testFieldInstance() {
  68         UnsafeTwoCASLong t = new UnsafeTwoCASLong();
  69         for (int c = 0; c < ITERS; c++) {
  70             testAccess(t, V_OFFSET);
  71         }
  72     }
  73 
  74     static void testAccess(Object base, long offset) {
  75         UNSAFE.compareAndSetLong(base, offset, 1L, 2L);
  76         UNSAFE.compareAndSetLong(base, offset, 2L, 1L);
  77     }
  78 
  79 }

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