author | roland |
Mon, 05 Nov 2018 12:53:55 +0100 | |
changeset 52409 | 87bc444ca642 |
parent 52220 | 9c260a6b6471 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, Red Hat, Inc. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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|
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package compiler.c2.aarch64; |
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import java.lang.reflect.Field; |
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import jdk.internal.misc.Unsafe; |
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class TestUnsafeVolatileCAS |
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{ |
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public volatile int f_int = 0; |
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public volatile Integer f_obj = Integer.valueOf(0); |
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public volatile long f_long = 0; |
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public volatile byte f_byte = 0; |
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public volatile short f_short = 0; |
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public static Unsafe unsafe = Unsafe.getUnsafe(); |
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public static Field f_int_field; |
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public static Field f_obj_field; |
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public static Field f_long_field; |
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public static Field f_byte_field; |
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public static Field f_short_field; |
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public static long f_int_off; |
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public static long f_obj_off; |
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public static long f_long_off; |
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public static long f_byte_off; |
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public static long f_short_off; |
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static { |
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try { |
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f_int_field = TestUnsafeVolatileCAS.class.getField("f_int"); |
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f_obj_field = TestUnsafeVolatileCAS.class.getField("f_obj"); |
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f_long_field = TestUnsafeVolatileCAS.class.getField("f_long"); |
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f_byte_field = TestUnsafeVolatileCAS.class.getField("f_byte"); |
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f_short_field = TestUnsafeVolatileCAS.class.getField("f_short"); |
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f_int_off = unsafe.objectFieldOffset(f_int_field); |
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f_obj_off = unsafe.objectFieldOffset(f_obj_field); |
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f_long_off = unsafe.objectFieldOffset(f_long_field); |
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f_byte_off = unsafe.objectFieldOffset(f_byte_field); |
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f_short_off = unsafe.objectFieldOffset(f_short_field); |
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} catch (Exception e) { |
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System.out.println("reflection failed " + e); |
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e.printStackTrace(); |
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} |
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} |
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public static void main(String[] args) |
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{ |
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final TestUnsafeVolatileCAS t = new TestUnsafeVolatileCAS(); |
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for (int i = 0; i < 100_000; i++) { |
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t.f_int = -1; |
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t.testInt(-1, i); |
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if (t.f_int != i) { |
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throw new RuntimeException("bad result!"); |
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} |
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} |
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for (int i = 0; i < 100_000; i++) { |
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t.f_long = -1; |
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t.testLong(-1, i); |
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if (t.f_long != i) { |
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throw new RuntimeException("bad result!"); |
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} |
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} |
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for (int i = 0; i < 100_000; i++) { |
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t.f_byte = -1; |
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byte i_b = (byte)i; |
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t.testByte((byte)-1, i_b); |
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if (t.f_byte != i_b) { |
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throw new RuntimeException("bad result!"); |
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} |
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} |
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for (int i = 0; i < 100_000; i++) { |
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t.f_short = -1; |
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short i_s = (short)i; |
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t.testShort((byte)-1, i_s); |
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if (t.f_short != i_s) { |
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throw new RuntimeException("bad result!"); |
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} |
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} |
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Integer minusOne = Integer.valueOf(-1); |
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for (int i = 0; i < 100_000; i++) { |
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t.f_obj = minusOne; |
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t.testObj(minusOne, Integer.valueOf(i)); |
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if (t.f_obj != i) { |
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throw new RuntimeException("bad result!"); |
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} |
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} |
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} |
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public void testInt(int x, int i) |
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{ |
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unsafe.compareAndSetInt(this, f_int_off, x, i); |
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} |
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public void testObj(Object x, Object o) |
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{ |
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unsafe.compareAndSetReference(this, f_obj_off, x, o); |
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} |
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public void testLong(long x, long i) |
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{ |
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unsafe.compareAndSetLong(this, f_long_off, x, i); |
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} |
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public void testByte(byte x, byte i) |
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{ |
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unsafe.compareAndSetByte(this, f_byte_off, x, i); |
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} |
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public void testShort(short x, short i) |
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{ |
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unsafe.compareAndSetShort(this, f_short_off, x, i); |
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} |
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} |