author | psandoz |
Mon, 05 Jun 2017 15:52:09 -0700 | |
changeset 45514 | 0fc9cc73ce45 |
parent 42307 | cefc81dc1d52 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 2017, Oracle and/or its affiliates. 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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/* |
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* @test |
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* @bug 8143628 |
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* @summary Test unsafe access for byte |
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* |
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* @modules java.base/jdk.internal.misc:+open |
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* @run testng/othervm -Diters=100 -Xint compiler.unsafe.JdkInternalMiscUnsafeAccessTestByte |
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* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 compiler.unsafe.JdkInternalMiscUnsafeAccessTestByte |
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* @run testng/othervm -Diters=20000 -XX:-TieredCompilation compiler.unsafe.JdkInternalMiscUnsafeAccessTestByte |
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* @run testng/othervm -Diters=20000 compiler.unsafe.JdkInternalMiscUnsafeAccessTestByte |
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*/ |
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package compiler.unsafe; |
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||
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import org.testng.annotations.Test; |
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import java.lang.reflect.Field; |
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import static org.testng.Assert.*; |
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public class JdkInternalMiscUnsafeAccessTestByte { |
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static final int ITERS = Integer.getInteger("iters", 1); |
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static final int WEAK_ATTEMPTS = Integer.getInteger("weakAttempts", 10); |
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static final jdk.internal.misc.Unsafe UNSAFE; |
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static final long V_OFFSET; |
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static final Object STATIC_V_BASE; |
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|
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static final long STATIC_V_OFFSET; |
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static int ARRAY_OFFSET; |
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|
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static int ARRAY_SHIFT; |
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|
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static { |
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try { |
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Field f = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe"); |
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f.setAccessible(true); |
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UNSAFE = (jdk.internal.misc.Unsafe) f.get(null); |
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} catch (Exception e) { |
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throw new RuntimeException("Unable to get Unsafe instance.", e); |
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} |
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|
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try { |
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Field staticVField = JdkInternalMiscUnsafeAccessTestByte.class.getDeclaredField("static_v"); |
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STATIC_V_BASE = UNSAFE.staticFieldBase(staticVField); |
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STATIC_V_OFFSET = UNSAFE.staticFieldOffset(staticVField); |
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} catch (Exception e) { |
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throw new RuntimeException(e); |
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} |
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|
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try { |
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Field vField = JdkInternalMiscUnsafeAccessTestByte.class.getDeclaredField("v"); |
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V_OFFSET = UNSAFE.objectFieldOffset(vField); |
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} catch (Exception e) { |
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throw new RuntimeException(e); |
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} |
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ARRAY_OFFSET = UNSAFE.arrayBaseOffset(byte[].class); |
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int ascale = UNSAFE.arrayIndexScale(byte[].class); |
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ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale); |
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} |
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static byte static_v; |
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byte v; |
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|
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@Test |
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public void testFieldInstance() { |
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JdkInternalMiscUnsafeAccessTestByte t = new JdkInternalMiscUnsafeAccessTestByte(); |
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for (int c = 0; c < ITERS; c++) { |
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testAccess(t, V_OFFSET); |
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} |
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} |
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|
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@Test |
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public void testFieldStatic() { |
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for (int c = 0; c < ITERS; c++) { |
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testAccess(STATIC_V_BASE, STATIC_V_OFFSET); |
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} |
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} |
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|
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@Test |
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public void testArray() { |
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byte[] array = new byte[10]; |
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for (int c = 0; c < ITERS; c++) { |
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for (int i = 0; i < array.length; i++) { |
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testAccess(array, (((long) i) << ARRAY_SHIFT) + ARRAY_OFFSET); |
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} |
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} |
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} |
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|
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@Test |
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public void testArrayOffHeap() { |
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int size = 10; |
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long address = UNSAFE.allocateMemory(size << ARRAY_SHIFT); |
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122 |
try { |
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123 |
for (int c = 0; c < ITERS; c++) { |
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for (int i = 0; i < size; i++) { |
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testAccess(null, (((long) i) << ARRAY_SHIFT) + address); |
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126 |
} |
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127 |
} |
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128 |
} finally { |
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129 |
UNSAFE.freeMemory(address); |
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130 |
} |
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131 |
} |
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132 |
|
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133 |
@Test |
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134 |
public void testArrayOffHeapDirect() { |
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135 |
int size = 10; |
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136 |
long address = UNSAFE.allocateMemory(size << ARRAY_SHIFT); |
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137 |
try { |
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138 |
for (int c = 0; c < ITERS; c++) { |
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139 |
for (int i = 0; i < size; i++) { |
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140 |
testAccess((((long) i) << ARRAY_SHIFT) + address); |
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141 |
} |
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142 |
} |
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143 |
} finally { |
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144 |
UNSAFE.freeMemory(address); |
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145 |
} |
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146 |
} |
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147 |
|
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148 |
static void testAccess(Object base, long offset) { |
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149 |
// Plain |
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150 |
{ |
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151 |
UNSAFE.putByte(base, offset, (byte)0x01); |
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byte x = UNSAFE.getByte(base, offset); |
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153 |
assertEquals(x, (byte)0x01, "set byte value"); |
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154 |
} |
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155 |
|
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156 |
// Volatile |
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157 |
{ |
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158 |
UNSAFE.putByteVolatile(base, offset, (byte)0x23); |
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159 |
byte x = UNSAFE.getByteVolatile(base, offset); |
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160 |
assertEquals(x, (byte)0x23, "putVolatile byte value"); |
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161 |
} |
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162 |
|
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163 |
|
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164 |
// Lazy |
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165 |
{ |
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166 |
UNSAFE.putByteRelease(base, offset, (byte)0x01); |
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167 |
byte x = UNSAFE.getByteAcquire(base, offset); |
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168 |
assertEquals(x, (byte)0x01, "putRelease byte value"); |
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169 |
} |
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170 |
|
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171 |
// Opaque |
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172 |
{ |
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173 |
UNSAFE.putByteOpaque(base, offset, (byte)0x23); |
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174 |
byte x = UNSAFE.getByteOpaque(base, offset); |
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175 |
assertEquals(x, (byte)0x23, "putOpaque byte value"); |
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176 |
} |
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|
177 |
|
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178 |
|
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179 |
UNSAFE.putByte(base, offset, (byte)0x01); |
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180 |
|
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|
181 |
// Compare |
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182 |
{ |
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|
183 |
boolean r = UNSAFE.compareAndSetByte(base, offset, (byte)0x01, (byte)0x23); |
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|
184 |
assertEquals(r, true, "success compareAndSet byte"); |
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185 |
byte x = UNSAFE.getByte(base, offset); |
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|
186 |
assertEquals(x, (byte)0x23, "success compareAndSet byte value"); |
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187 |
} |
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|
188 |
|
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189 |
{ |
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|
190 |
boolean r = UNSAFE.compareAndSetByte(base, offset, (byte)0x01, (byte)0x45); |
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|
191 |
assertEquals(r, false, "failing compareAndSet byte"); |
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|
192 |
byte x = UNSAFE.getByte(base, offset); |
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|
193 |
assertEquals(x, (byte)0x23, "failing compareAndSet byte value"); |
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|
194 |
} |
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|
195 |
|
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|
196 |
// Advanced compare |
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197 |
{ |
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|
198 |
byte r = UNSAFE.compareAndExchangeByte(base, offset, (byte)0x23, (byte)0x01); |
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|
199 |
assertEquals(r, (byte)0x23, "success compareAndExchange byte"); |
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|
200 |
byte x = UNSAFE.getByte(base, offset); |
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changeset
|
201 |
assertEquals(x, (byte)0x01, "success compareAndExchange byte value"); |
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|
202 |
} |
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|
203 |
|
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|
204 |
{ |
45514
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|
205 |
byte r = UNSAFE.compareAndExchangeByte(base, offset, (byte)0x23, (byte)0x45); |
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|
206 |
assertEquals(r, (byte)0x01, "failing compareAndExchange byte"); |
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|
207 |
byte x = UNSAFE.getByte(base, offset); |
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|
208 |
assertEquals(x, (byte)0x01, "failing compareAndExchange byte value"); |
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|
209 |
} |
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|
210 |
|
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|
211 |
{ |
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|
212 |
byte r = UNSAFE.compareAndExchangeByteAcquire(base, offset, (byte)0x01, (byte)0x23); |
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|
213 |
assertEquals(r, (byte)0x01, "success compareAndExchangeAcquire byte"); |
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|
214 |
byte x = UNSAFE.getByte(base, offset); |
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|
215 |
assertEquals(x, (byte)0x23, "success compareAndExchangeAcquire byte value"); |
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|
216 |
} |
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|
217 |
|
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|
218 |
{ |
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|
219 |
byte r = UNSAFE.compareAndExchangeByteAcquire(base, offset, (byte)0x01, (byte)0x45); |
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|
220 |
assertEquals(r, (byte)0x23, "failing compareAndExchangeAcquire byte"); |
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|
221 |
byte x = UNSAFE.getByte(base, offset); |
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|
222 |
assertEquals(x, (byte)0x23, "failing compareAndExchangeAcquire byte value"); |
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|
223 |
} |
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|
224 |
|
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|
225 |
{ |
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|
226 |
byte r = UNSAFE.compareAndExchangeByteRelease(base, offset, (byte)0x23, (byte)0x01); |
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|
227 |
assertEquals(r, (byte)0x23, "success compareAndExchangeRelease byte"); |
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|
228 |
byte x = UNSAFE.getByte(base, offset); |
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|
229 |
assertEquals(x, (byte)0x01, "success compareAndExchangeRelease byte value"); |
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|
230 |
} |
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|
231 |
|
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|
232 |
{ |
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|
233 |
byte r = UNSAFE.compareAndExchangeByteRelease(base, offset, (byte)0x23, (byte)0x45); |
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changeset
|
234 |
assertEquals(r, (byte)0x01, "failing compareAndExchangeRelease byte"); |
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|
235 |
byte x = UNSAFE.getByte(base, offset); |
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assertEquals(x, (byte)0x01, "failing compareAndExchangeRelease byte value"); |
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} |
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|
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{ |
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boolean success = false; |
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for (int c = 0; c < WEAK_ATTEMPTS && !success; c++) { |
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success = UNSAFE.weakCompareAndSetBytePlain(base, offset, (byte)0x01, (byte)0x23); |
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} |
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assertEquals(success, true, "weakCompareAndSetPlain byte"); |
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byte x = UNSAFE.getByte(base, offset); |
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assertEquals(x, (byte)0x23, "weakCompareAndSetPlain byte value"); |
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} |
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|
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{ |
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boolean success = false; |
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for (int c = 0; c < WEAK_ATTEMPTS && !success; c++) { |
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success = UNSAFE.weakCompareAndSetByteAcquire(base, offset, (byte)0x23, (byte)0x01); |
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} |
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assertEquals(success, true, "weakCompareAndSetAcquire byte"); |
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byte x = UNSAFE.getByte(base, offset); |
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assertEquals(x, (byte)0x01, "weakCompareAndSetAcquire byte"); |
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} |
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|
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{ |
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boolean success = false; |
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for (int c = 0; c < WEAK_ATTEMPTS && !success; c++) { |
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success = UNSAFE.weakCompareAndSetByteRelease(base, offset, (byte)0x01, (byte)0x23); |
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} |
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assertEquals(success, true, "weakCompareAndSetRelease byte"); |
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byte x = UNSAFE.getByte(base, offset); |
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assertEquals(x, (byte)0x23, "weakCompareAndSetRelease byte"); |
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} |
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|
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{ |
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boolean success = false; |
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for (int c = 0; c < WEAK_ATTEMPTS && !success; c++) { |
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success = UNSAFE.weakCompareAndSetByte(base, offset, (byte)0x23, (byte)0x01); |
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} |
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assertEquals(success, true, "weakCompareAndSet byte"); |
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byte x = UNSAFE.getByte(base, offset); |
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assertEquals(x, (byte)0x01, "weakCompareAndSet byte"); |
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} |
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|
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UNSAFE.putByte(base, offset, (byte)0x23); |
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|
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// Compare set and get |
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{ |
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byte o = UNSAFE.getAndSetByte(base, offset, (byte)0x01); |
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assertEquals(o, (byte)0x23, "getAndSet byte"); |
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byte x = UNSAFE.getByte(base, offset); |
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assertEquals(x, (byte)0x01, "getAndSet byte value"); |
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} |
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|
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UNSAFE.putByte(base, offset, (byte)0x01); |
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|
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// get and add, add and get |
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{ |
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byte o = UNSAFE.getAndAddByte(base, offset, (byte)0x23); |
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assertEquals(o, (byte)0x01, "getAndAdd byte"); |
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byte x = UNSAFE.getByte(base, offset); |
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assertEquals(x, (byte)((byte)0x01 + (byte)0x23), "getAndAdd byte"); |
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} |
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} |
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|
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static void testAccess(long address) { |
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// Plain |
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{ |
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UNSAFE.putByte(address, (byte)0x01); |
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byte x = UNSAFE.getByte(address); |
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assertEquals(x, (byte)0x01, "set byte value"); |
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} |
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} |
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} |