src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/UnsafeSubstitutionsTest.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */


 package org.graalvm.compiler.replacements.test;

 import org.junit.Assert;
 import org.junit.Test;

 import jdk.vm.ci.code.InstalledCode;
 import jdk.vm.ci.meta.JavaKind;
 import jdk.vm.ci.meta.ResolvedJavaMethod;
 import sun.misc.Unsafe;

 /**
  * Tests the VM independent intrinsification of {@link Unsafe} methods.
  */
 public class UnsafeSubstitutionsTest extends MethodSubstitutionTest {

     public void testSubstitution(String testMethodName, Class<?> holder, String methodName, Class<?>[] parameterTypes, Object receiver, Object[] args1, Object[] args2) {
         ResolvedJavaMethod testMethod = getResolvedJavaMethod(testMethodName);
         ResolvedJavaMethod originalMethod = getResolvedJavaMethod(holder, methodName, parameterTypes);

         // Force compilation
         InstalledCode code = getCode(testMethod);
         assert code != null;

         // Verify that the original method and the substitution produce the same value
         Object expected = invokeSafe(originalMethod, receiver, args1);
         Object actual = invokeSafe(testMethod, null, args2);
         assertDeepEquals(expected, actual);

         // Verify that the generated code and the original produce the same value
         expected = invokeSafe(originalMethod, receiver, args1);
         actual = executeVarargsSafe(code, args2);
         assertDeepEquals(expected, actual);

     }

     static long off(Object o, String name) {
         try {
             return UNSAFE.objectFieldOffset(o.getClass().getDeclaredField(name));
         } catch (Exception e) {
             Assert.fail(e.toString());
             return 0L;
         }
     }

     static class Foo {
         boolean z;
         byte b;
         short s;
         char c;
         int i;
         long l;
         float f;
         double d;
         Object o;
     }

     @Test
     public void testUnsafeSubstitutions() throws Exception {
         test("unsafeCompareAndSwapInt", UNSAFE, supply(() -> new Foo()), fooOffset("i"));

         testGraph("unsafeCompareAndSwapInt");
         testGraph("unsafeCompareAndSwapLong");
         testGraph("unsafeCompareAndSwapObject");

         testGraph("unsafeGetBoolean");
         testGraph("unsafeGetByte");
         testGraph("unsafeGetShort");
         testGraph("unsafeGetChar");
         testGraph("unsafeGetInt");
         testGraph("unsafeGetLong");
         testGraph("unsafeGetFloat");
         testGraph("unsafeGetDouble");
         testGraph("unsafeGetObject");

         testGraph("unsafePutBoolean");
         testGraph("unsafePutByte");
         testGraph("unsafePutShort");
         testGraph("unsafePutChar");
         testGraph("unsafePutInt");
         testGraph("unsafePutLong");
         testGraph("unsafePutFloat");
         testGraph("unsafePutDouble");
         testGraph("unsafePutObject");

         testGraph("unsafeGetAddress");
         testGraph("unsafePutAddress");

         testGraph("unsafeDirectMemoryRead");
         testGraph("unsafeDirectMemoryWrite");

         long address = UNSAFE.allocateMemory(8 * JavaKind.values().length);
         for (Unsafe unsafeArg : new Unsafe[]{UNSAFE, null}) {
             test("unsafeCompareAndSwapInt", unsafeArg, supply(() -> new Foo()), fooOffset("i"));
             test("unsafeCompareAndSwapLong", unsafeArg, supply(() -> new Foo()), fooOffset("l"));
             test("unsafeCompareAndSwapObject", unsafeArg, supply(() -> new Foo()), fooOffset("o"));

             test("unsafeGetBoolean", unsafeArg, supply(() -> new Foo()), fooOffset("z"));
             test("unsafeGetByte", unsafeArg, supply(() -> new Foo()), fooOffset("b"));
             test("unsafeGetShort", unsafeArg, supply(() -> new Foo()), fooOffset("s"));
             test("unsafeGetChar", unsafeArg, supply(() -> new Foo()), fooOffset("c"));
             test("unsafeGetInt", unsafeArg, supply(() -> new Foo()), fooOffset("i"));
             test("unsafeGetLong", unsafeArg, supply(() -> new Foo()), fooOffset("l"));
             test("unsafeGetFloat", unsafeArg, supply(() -> new Foo()), fooOffset("f"));
             test("unsafeGetDouble", unsafeArg, supply(() -> new Foo()), fooOffset("d"));
             test("unsafeGetObject", unsafeArg, supply(() -> new Foo()), fooOffset("o"));

             test("unsafePutBoolean", unsafeArg, supply(() -> new Foo()), fooOffset("z"), true);
             test("unsafePutByte", unsafeArg, supply(() -> new Foo()), fooOffset("b"), (byte) 87);
             test("unsafePutShort", unsafeArg, supply(() -> new Foo()), fooOffset("s"), (short) -93);
             test("unsafePutChar", unsafeArg, supply(() -> new Foo()), fooOffset("c"), 'A');
             test("unsafePutInt", unsafeArg, supply(() -> new Foo()), fooOffset("i"), 42);
             test("unsafePutLong", unsafeArg, supply(() -> new Foo()), fooOffset("l"), 4711L);
             test("unsafePutFloat", unsafeArg, supply(() -> new Foo()), fooOffset("f"), 58.0F);
             test("unsafePutDouble", unsafeArg, supply(() -> new Foo()), fooOffset("d"), -28736.243465D);
             test("unsafePutObject", unsafeArg, supply(() -> new Foo()), fooOffset("i"), "value1", "value2", "value3");

             test("unsafeGetAddress", unsafeArg, address);
             test("unsafePutAddress", unsafeArg, address, 0xDEAD_BEEF_DEAD_BABEL);

             test("unsafeDirectMemoryRead", unsafeArg, address);
             test("unsafeDirectMemoryWrite", unsafeArg, address, 0xCAFE_BABE_DEAD_BABEL);
         }
         UNSAFE.freeMemory(address);
     }

     private static long fooOffset(String name) {
         try {
             return UNSAFE.objectFieldOffset(Foo.class.getDeclaredField(name));
         } catch (NoSuchFieldException | SecurityException e) {
             throw new AssertionError(e);
         }
     }

     @SuppressWarnings("all")
     public static boolean unsafeCompareAndSwapInt(Unsafe unsafe, Object obj, long offset) {
         return unsafe.compareAndSwapInt(obj, offset, 0, 1);
     }

     @SuppressWarnings("all")
     public static boolean unsafeCompareAndSwapLong(Unsafe unsafe, Object obj, long offset) {
         return unsafe.compareAndSwapLong(obj, offset, 0, 1);
     }

     @SuppressWarnings("all")
     public static boolean unsafeCompareAndSwapObject(Unsafe unsafe, Object obj, long offset) {
         return unsafe.compareAndSwapObject(obj, offset, null, new Object());
     }

     @SuppressWarnings("all")
     public static boolean unsafeGetBoolean(Unsafe unsafe, Object obj, long offset) {
         return unsafe.getBoolean(obj, offset) && unsafe.getBooleanVolatile(obj, offset);
     }

     @SuppressWarnings("all")
     public static int unsafeGetByte(Unsafe unsafe, Object obj, long offset) {
         return unsafe.getByte(obj, offset) + unsafe.getByteVolatile(obj, offset);
     }

     @SuppressWarnings("all")
     public static int unsafeGetShort(Unsafe unsafe, Object obj, long offset) {
         return unsafe.getShort(obj, offset) + unsafe.getShortVolatile(obj, offset);
     }

     @SuppressWarnings("all")
     public static int unsafeGetChar(Unsafe unsafe, Object obj, long offset) {
         return unsafe.getChar(obj, offset) + unsafe.getCharVolatile(obj, offset);
     }

     @SuppressWarnings("all")
     public static int unsafeGetInt(Unsafe unsafe, Object obj, long offset) {
         return unsafe.getInt(obj, offset) + unsafe.getIntVolatile(obj, offset);
     }

     @SuppressWarnings("all")
     public static long unsafeGetLong(Unsafe unsafe, Object obj, long offset) {
         return unsafe.getLong(obj, offset) + unsafe.getLongVolatile(obj, offset);
     }

     @SuppressWarnings("all")
     public static float unsafeGetFloat(Unsafe unsafe, Object obj, long offset) {
         return unsafe.getFloat(obj, offset) + unsafe.getFloatVolatile(obj, offset);
     }

     @SuppressWarnings("all")
     public static double unsafeGetDouble(Unsafe unsafe, Object obj, long offset) {
         return unsafe.getDouble(obj, offset) + unsafe.getDoubleVolatile(obj, offset);
     }

     @SuppressWarnings("all")
     public static boolean unsafeGetObject(Unsafe unsafe, Object obj, long offset) {
         return unsafe.getObject(obj, offset) == unsafe.getObjectVolatile(obj, offset);
     }

     @SuppressWarnings("all")
     public static int unsafePutBoolean(Unsafe unsafe, Object obj, long offset, boolean value) {
         int res = 1;
         unsafe.putBoolean(obj, offset, value);
         res += unsafe.getBoolean(obj, offset) ? 3 : 5;
         unsafe.putBooleanVolatile(obj, offset, value);
         res += unsafe.getBoolean(obj, offset) ? 7 : 11;
         return res;
     }

     @SuppressWarnings("all")
     public static int unsafePutByte(Unsafe unsafe, Object obj, long offset, byte value) {
         int res = 1;
         unsafe.putByte(obj, offset, (byte) (value + 1));
         res += unsafe.getByte(obj, offset);
         unsafe.putByteVolatile(obj, offset, (byte) (value + 2));
         res += unsafe.getByte(obj, offset);
         return res;
     }

     @SuppressWarnings("all")
     public static int unsafePutShort(Unsafe unsafe, Object obj, long offset, short value) {
         int res = 1;
         unsafe.putShort(obj, offset, (short) (value + 1));
         res += unsafe.getShort(obj, offset);
         unsafe.putShortVolatile(obj, offset, (short) (value + 2));
         res += unsafe.getShort(obj, offset);
         return res;
     }

     @SuppressWarnings("all")
     public static int unsafePutChar(Unsafe unsafe, Object obj, long offset, char value) {
         int res = 1;
         unsafe.putChar(obj, offset, (char) (value + 1));
         res += unsafe.getChar(obj, offset);
         unsafe.putCharVolatile(obj, offset, (char) (value + 2));
         res += unsafe.getChar(obj, offset);
         return res;
     }

     @SuppressWarnings("all")
     public static int unsafePutInt(Unsafe unsafe, Object obj, long offset, int value) {
         int res = 1;
         unsafe.putInt(obj, offset, value);
         res += unsafe.getInt(obj, offset);
         unsafe.putIntVolatile(obj, offset, value + 1);
         res += unsafe.getInt(obj, offset);
         unsafe.putOrderedInt(obj, offset, value + 2);
         res += unsafe.getInt(obj, offset);
         return res;
     }

     @SuppressWarnings("all")
     public static long unsafePutLong(Unsafe unsafe, Object obj, long offset, long value) {
         long res = 1;
         unsafe.putLong(obj, offset, value + 1);
         res += unsafe.getLong(obj, offset);
         unsafe.putLongVolatile(obj, offset, value + 2);
         res += unsafe.getLong(obj, offset);
         unsafe.putOrderedLong(obj, offset, value + 3);
         res += unsafe.getLong(obj, offset);
         return res;
     }

     @SuppressWarnings("all")
     public static float unsafePutFloat(Unsafe unsafe, Object obj, long offset, float value) {
         float res = 1;
         unsafe.putFloat(obj, offset, value + 1.0F);
         res += unsafe.getFloat(obj, offset);
         unsafe.putFloatVolatile(obj, offset, value + 2.0F);
         res += unsafe.getFloat(obj, offset);
         return res;
     }

     @SuppressWarnings("all")
     public static double unsafePutDouble(Unsafe unsafe, Object obj, long offset, double value) {
         double res = 1;
         unsafe.putDouble(obj, offset, value);
         res += unsafe.getDouble(obj, offset);
         unsafe.putDoubleVolatile(obj, offset, value);
         res += unsafe.getDouble(obj, offset);
         return res;
     }

     @SuppressWarnings("all")
     public static Object[] unsafePutObject(Unsafe unsafe, Object obj, long offset, Object value1, Object value2, Object value3) {
         Object[] res = new Object[3];
         unsafe.putObject(obj, offset, value1);
         res[0] = unsafe.getObject(obj, offset);
         unsafe.putObjectVolatile(obj, offset, value2);
         res[1] = unsafe.getObject(obj, offset);
         unsafe.putOrderedObject(obj, offset, value3);
         res[2] = unsafe.getObject(obj, offset);
         return res;
     }

     @SuppressWarnings("all")
     public static long unsafeGetAddress(Unsafe unsafe, long offset) {
         return unsafe.getAddress(offset);
     }

     @SuppressWarnings("all")
     public static long unsafePutAddress(Unsafe unsafe, long offset, long value) {
         long res = 1;
         unsafe.putAddress(offset, value);
         res += unsafe.getAddress(offset);
         return res;
     }

     @SuppressWarnings("all")
     public static double unsafeDirectMemoryRead(Unsafe unsafe, long address) {
         // Unsafe.getBoolean(long) and Unsafe.getObject(long) do not exist
         // @formatter:off
         return unsafe.getByte(address) +
                unsafe.getShort(address + 8) +
                unsafe.getChar(address + 16) +
                unsafe.getInt(address + 24) +
                unsafe.getLong(address + 32) +
                unsafe.getFloat(address + 40) +
                unsafe.getDouble(address + 48);
         // @formatter:on
     }

     @SuppressWarnings("all")
     public static double unsafeDirectMemoryWrite(Unsafe unsafe, long address, long value) {
         // Unsafe.putBoolean(long) and Unsafe.putObject(long) do not exist
         unsafe.putByte(address + 0, (byte) value);
         unsafe.putShort(address + 8, (short) value);
         unsafe.putChar(address + 16, (char) value);
         unsafe.putInt(address + 24, (int) value);
         unsafe.putLong(address + 32, value);
         unsafe.putFloat(address + 40, value);
         unsafe.putDouble(address + 48, value);
         return unsafeDirectMemoryRead(unsafe, address);
     }

     static class MyObject {
         int i = 42;
         final int j = 24;
         final String a = "a";
         final String b;

         MyObject(String b) {
             this.b = b;
             Thread.dumpStack();
         }

         @Override
         public String toString() {
             return j + a + b + i;
         }
     }

     @SuppressWarnings("all")
     public static String unsafeAllocateInstance(Unsafe unsafe) throws InstantiationException {
         return unsafe.allocateInstance(MyObject.class).toString();
     }

     @Test
     public void testAllocateInstance() throws Exception {
         unsafeAllocateInstance(UNSAFE);
         test("unsafeAllocateInstance", UNSAFE);
         test("unsafeAllocateInstance", (Object) null);
     }

     @Test
     public void testGetAndAddInt() throws Exception {
         Foo f1 = new Foo();
         Foo f2 = new Foo();
         long offset = off(f1, "i");
         Class<?>[] parameterTypes = new Class<?>[]{Object.class, long.class, int.class};
         for (int delta = Integer.MAX_VALUE - 10; delta < Integer.MAX_VALUE; delta++) {
             Object[] args1 = new Object[]{f1, offset, delta};
             Object[] args2 = new Object[]{f2, offset, delta};
             testSubstitution("getAndAddInt", Unsafe.class, "getAndAddInt", parameterTypes, UNSAFE, args1, args2);
         }
     }

     public static int getAndAddInt(Object obj, long offset, int delta) {
         return UNSAFE.getAndAddInt(obj, offset, delta);
     }

     @Test
     public void testGetAndAddLong() throws Exception {
         Foo f1 = new Foo();
         Foo f2 = new Foo();
         long offset = off(f1, "l");
         Class<?>[] parameterTypes = new Class<?>[]{Object.class, long.class, long.class};
         for (long delta = Long.MAX_VALUE - 10; delta < Long.MAX_VALUE; delta++) {
             Object[] args1 = new Object[]{f1, offset, delta};
             Object[] args2 = new Object[]{f2, offset, delta};
             testSubstitution("getAndAddLong", Unsafe.class, "getAndAddLong", parameterTypes, UNSAFE, args1, args2);
         }
     }

     public static long getAndAddLong(Object obj, long offset, long delta) {
         return UNSAFE.getAndAddLong(obj, offset, delta);
     }

     @Test
     public void testGetAndSetInt() throws Exception {
         Foo f1 = new Foo();
         Foo f2 = new Foo();
         long offset = off(f1, "i");
         Class<?>[] parameterTypes = new Class<?>[]{Object.class, long.class, int.class};
         for (int delta = Integer.MAX_VALUE - 10; delta < Integer.MAX_VALUE; delta++) {
             Object[] args1 = new Object[]{f1, offset, delta};
             Object[] args2 = new Object[]{f2, offset, delta};
             testSubstitution("getAndSetInt", Unsafe.class, "getAndSetInt", parameterTypes, UNSAFE, args1, args2);
         }
     }

     public static int getAndSetInt(Object obj, long offset, int newValue) {
         return UNSAFE.getAndSetInt(obj, offset, newValue);
     }

     @Test
     public void testGetAndSetLong() throws Exception {
         Foo f1 = new Foo();
         Foo f2 = new Foo();
         long offset = off(f1, "l");
         Class<?>[] parameterTypes = new Class<?>[]{Object.class, long.class, long.class};
         for (long newValue = Long.MAX_VALUE - 10; newValue < Long.MAX_VALUE; newValue++) {
             Object[] args1 = new Object[]{f1, offset, newValue};
             Object[] args2 = new Object[]{f2, offset, newValue};
             testSubstitution("getAndSetLong", Unsafe.class, "getAndSetLong", parameterTypes, UNSAFE, args1, args2);
         }
     }

     public static long getAndSetLong(Object obj, long offset, long newValue) {
         return UNSAFE.getAndSetLong(obj, offset, newValue);
     }

     @Test
     public void testGetAndSetObject() throws Exception {
         Foo f1 = new Foo();
         Foo f2 = new Foo();
         long offset = off(f1, "o");
         Class<?>[] parameterTypes = new Class<?>[]{Object.class, long.class, Object.class};
         for (long i = 0; i < 10; i++) {
             Object o = new Object();
             Object[] args1 = new Object[]{f1, offset, o};
             Object[] args2 = new Object[]{f2, offset, o};
             testSubstitution("getAndSetObject", Unsafe.class, "getAndSetObject", parameterTypes, UNSAFE, args1, args2);
             System.gc();
         }
     }

     public static Object getAndSetObject(Object obj, long offset, Object newValue) {
         return UNSAFE.getAndSetObject(obj, offset, newValue);
     }

 }
	/*
	* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/


	package org.graalvm.compiler.replacements.test;

	import org.junit.Assert;
	import org.junit.Test;

	import jdk.vm.ci.code.InstalledCode;
	import jdk.vm.ci.meta.JavaKind;
	import jdk.vm.ci.meta.ResolvedJavaMethod;
	import sun.misc.Unsafe;

	/**
	* Tests the VM independent intrinsification of {@link Unsafe} methods.
	*/
	public class UnsafeSubstitutionsTest extends MethodSubstitutionTest {

	public void testSubstitution(String testMethodName, Class<?> holder, String methodName, Class<?>[] parameterTypes, Object receiver, Object[] args1, Object[] args2) {
	ResolvedJavaMethod testMethod = getResolvedJavaMethod(testMethodName);
	ResolvedJavaMethod originalMethod = getResolvedJavaMethod(holder, methodName, parameterTypes);

	// Force compilation
	InstalledCode code = getCode(testMethod);
	assert code != null;

	// Verify that the original method and the substitution produce the same value
	Object expected = invokeSafe(originalMethod, receiver, args1);
	Object actual = invokeSafe(testMethod, null, args2);
	assertDeepEquals(expected, actual);

	// Verify that the generated code and the original produce the same value
	expected = invokeSafe(originalMethod, receiver, args1);
	actual = executeVarargsSafe(code, args2);
	assertDeepEquals(expected, actual);

	}

	static long off(Object o, String name) {
	try {
	return UNSAFE.objectFieldOffset(o.getClass().getDeclaredField(name));
	} catch (Exception e) {
	Assert.fail(e.toString());
	return 0L;
	}
	}

	static class Foo {
	boolean z;
	byte b;
	short s;
	char c;
	int i;
	long l;
	float f;
	double d;
	Object o;
	}

	@Test
	public void testUnsafeSubstitutions() throws Exception {
	test("unsafeCompareAndSwapInt", UNSAFE, supply(() -> new Foo()), fooOffset("i"));

	testGraph("unsafeCompareAndSwapInt");
	testGraph("unsafeCompareAndSwapLong");
	testGraph("unsafeCompareAndSwapObject");

	testGraph("unsafeGetBoolean");
	testGraph("unsafeGetByte");
	testGraph("unsafeGetShort");
	testGraph("unsafeGetChar");
	testGraph("unsafeGetInt");
	testGraph("unsafeGetLong");
	testGraph("unsafeGetFloat");
	testGraph("unsafeGetDouble");
	testGraph("unsafeGetObject");

	testGraph("unsafePutBoolean");
	testGraph("unsafePutByte");
	testGraph("unsafePutShort");
	testGraph("unsafePutChar");
	testGraph("unsafePutInt");
	testGraph("unsafePutLong");
	testGraph("unsafePutFloat");
	testGraph("unsafePutDouble");
	testGraph("unsafePutObject");

	testGraph("unsafeGetAddress");
	testGraph("unsafePutAddress");

	testGraph("unsafeDirectMemoryRead");
	testGraph("unsafeDirectMemoryWrite");

	long address = UNSAFE.allocateMemory(8 * JavaKind.values().length);
	for (Unsafe unsafeArg : new Unsafe[]{UNSAFE, null}) {
	test("unsafeCompareAndSwapInt", unsafeArg, supply(() -> new Foo()), fooOffset("i"));
	test("unsafeCompareAndSwapLong", unsafeArg, supply(() -> new Foo()), fooOffset("l"));
	test("unsafeCompareAndSwapObject", unsafeArg, supply(() -> new Foo()), fooOffset("o"));

	test("unsafeGetBoolean", unsafeArg, supply(() -> new Foo()), fooOffset("z"));
	test("unsafeGetByte", unsafeArg, supply(() -> new Foo()), fooOffset("b"));
	test("unsafeGetShort", unsafeArg, supply(() -> new Foo()), fooOffset("s"));
	test("unsafeGetChar", unsafeArg, supply(() -> new Foo()), fooOffset("c"));
	test("unsafeGetInt", unsafeArg, supply(() -> new Foo()), fooOffset("i"));
	test("unsafeGetLong", unsafeArg, supply(() -> new Foo()), fooOffset("l"));
	test("unsafeGetFloat", unsafeArg, supply(() -> new Foo()), fooOffset("f"));
	test("unsafeGetDouble", unsafeArg, supply(() -> new Foo()), fooOffset("d"));
	test("unsafeGetObject", unsafeArg, supply(() -> new Foo()), fooOffset("o"));

	test("unsafePutBoolean", unsafeArg, supply(() -> new Foo()), fooOffset("z"), true);
	test("unsafePutByte", unsafeArg, supply(() -> new Foo()), fooOffset("b"), (byte) 87);
	test("unsafePutShort", unsafeArg, supply(() -> new Foo()), fooOffset("s"), (short) -93);
	test("unsafePutChar", unsafeArg, supply(() -> new Foo()), fooOffset("c"), 'A');
	test("unsafePutInt", unsafeArg, supply(() -> new Foo()), fooOffset("i"), 42);
	test("unsafePutLong", unsafeArg, supply(() -> new Foo()), fooOffset("l"), 4711L);
	test("unsafePutFloat", unsafeArg, supply(() -> new Foo()), fooOffset("f"), 58.0F);
	test("unsafePutDouble", unsafeArg, supply(() -> new Foo()), fooOffset("d"), -28736.243465D);
	test("unsafePutObject", unsafeArg, supply(() -> new Foo()), fooOffset("i"), "value1", "value2", "value3");

	test("unsafeGetAddress", unsafeArg, address);
	test("unsafePutAddress", unsafeArg, address, 0xDEAD_BEEF_DEAD_BABEL);

	test("unsafeDirectMemoryRead", unsafeArg, address);
	test("unsafeDirectMemoryWrite", unsafeArg, address, 0xCAFE_BABE_DEAD_BABEL);
	}
	UNSAFE.freeMemory(address);
	}

	private static long fooOffset(String name) {
	try {
	return UNSAFE.objectFieldOffset(Foo.class.getDeclaredField(name));
	} catch (NoSuchFieldException \| SecurityException e) {
	throw new AssertionError(e);
	}
	}

	@SuppressWarnings("all")
	public static boolean unsafeCompareAndSwapInt(Unsafe unsafe, Object obj, long offset) {
	return unsafe.compareAndSwapInt(obj, offset, 0, 1);
	}

	@SuppressWarnings("all")
	public static boolean unsafeCompareAndSwapLong(Unsafe unsafe, Object obj, long offset) {
	return unsafe.compareAndSwapLong(obj, offset, 0, 1);
	}

	@SuppressWarnings("all")
	public static boolean unsafeCompareAndSwapObject(Unsafe unsafe, Object obj, long offset) {
	return unsafe.compareAndSwapObject(obj, offset, null, new Object());
	}

	@SuppressWarnings("all")
	public static boolean unsafeGetBoolean(Unsafe unsafe, Object obj, long offset) {
	return unsafe.getBoolean(obj, offset) && unsafe.getBooleanVolatile(obj, offset);
	}

	@SuppressWarnings("all")
	public static int unsafeGetByte(Unsafe unsafe, Object obj, long offset) {
	return unsafe.getByte(obj, offset) + unsafe.getByteVolatile(obj, offset);
	}

	@SuppressWarnings("all")
	public static int unsafeGetShort(Unsafe unsafe, Object obj, long offset) {
	return unsafe.getShort(obj, offset) + unsafe.getShortVolatile(obj, offset);
	}

	@SuppressWarnings("all")
	public static int unsafeGetChar(Unsafe unsafe, Object obj, long offset) {
	return unsafe.getChar(obj, offset) + unsafe.getCharVolatile(obj, offset);
	}

	@SuppressWarnings("all")
	public static int unsafeGetInt(Unsafe unsafe, Object obj, long offset) {
	return unsafe.getInt(obj, offset) + unsafe.getIntVolatile(obj, offset);
	}

	@SuppressWarnings("all")
	public static long unsafeGetLong(Unsafe unsafe, Object obj, long offset) {
	return unsafe.getLong(obj, offset) + unsafe.getLongVolatile(obj, offset);
	}

	@SuppressWarnings("all")
	public static float unsafeGetFloat(Unsafe unsafe, Object obj, long offset) {
	return unsafe.getFloat(obj, offset) + unsafe.getFloatVolatile(obj, offset);
	}

	@SuppressWarnings("all")
	public static double unsafeGetDouble(Unsafe unsafe, Object obj, long offset) {
	return unsafe.getDouble(obj, offset) + unsafe.getDoubleVolatile(obj, offset);
	}

	@SuppressWarnings("all")
	public static boolean unsafeGetObject(Unsafe unsafe, Object obj, long offset) {
	return unsafe.getObject(obj, offset) == unsafe.getObjectVolatile(obj, offset);
	}

	@SuppressWarnings("all")
	public static int unsafePutBoolean(Unsafe unsafe, Object obj, long offset, boolean value) {
	int res = 1;
	unsafe.putBoolean(obj, offset, value);
	res += unsafe.getBoolean(obj, offset) ? 3 : 5;
	unsafe.putBooleanVolatile(obj, offset, value);
	res += unsafe.getBoolean(obj, offset) ? 7 : 11;
	return res;
	}

	@SuppressWarnings("all")
	public static int unsafePutByte(Unsafe unsafe, Object obj, long offset, byte value) {
	int res = 1;
	unsafe.putByte(obj, offset, (byte) (value + 1));
	res += unsafe.getByte(obj, offset);
	unsafe.putByteVolatile(obj, offset, (byte) (value + 2));
	res += unsafe.getByte(obj, offset);
	return res;
	}

	@SuppressWarnings("all")
	public static int unsafePutShort(Unsafe unsafe, Object obj, long offset, short value) {
	int res = 1;
	unsafe.putShort(obj, offset, (short) (value + 1));
	res += unsafe.getShort(obj, offset);
	unsafe.putShortVolatile(obj, offset, (short) (value + 2));
	res += unsafe.getShort(obj, offset);
	return res;
	}

	@SuppressWarnings("all")
	public static int unsafePutChar(Unsafe unsafe, Object obj, long offset, char value) {
	int res = 1;
	unsafe.putChar(obj, offset, (char) (value + 1));
	res += unsafe.getChar(obj, offset);
	unsafe.putCharVolatile(obj, offset, (char) (value + 2));
	res += unsafe.getChar(obj, offset);
	return res;
	}

	@SuppressWarnings("all")
	public static int unsafePutInt(Unsafe unsafe, Object obj, long offset, int value) {
	int res = 1;
	unsafe.putInt(obj, offset, value);
	res += unsafe.getInt(obj, offset);
	unsafe.putIntVolatile(obj, offset, value + 1);
	res += unsafe.getInt(obj, offset);
	unsafe.putOrderedInt(obj, offset, value + 2);
	res += unsafe.getInt(obj, offset);
	return res;
	}

	@SuppressWarnings("all")
	public static long unsafePutLong(Unsafe unsafe, Object obj, long offset, long value) {
	long res = 1;
	unsafe.putLong(obj, offset, value + 1);
	res += unsafe.getLong(obj, offset);
	unsafe.putLongVolatile(obj, offset, value + 2);
	res += unsafe.getLong(obj, offset);
	unsafe.putOrderedLong(obj, offset, value + 3);
	res += unsafe.getLong(obj, offset);
	return res;
	}

	@SuppressWarnings("all")
	public static float unsafePutFloat(Unsafe unsafe, Object obj, long offset, float value) {
	float res = 1;
	unsafe.putFloat(obj, offset, value + 1.0F);
	res += unsafe.getFloat(obj, offset);
	unsafe.putFloatVolatile(obj, offset, value + 2.0F);
	res += unsafe.getFloat(obj, offset);
	return res;
	}

	@SuppressWarnings("all")
	public static double unsafePutDouble(Unsafe unsafe, Object obj, long offset, double value) {
	double res = 1;
	unsafe.putDouble(obj, offset, value);
	res += unsafe.getDouble(obj, offset);
	unsafe.putDoubleVolatile(obj, offset, value);
	res += unsafe.getDouble(obj, offset);
	return res;
	}

	@SuppressWarnings("all")
	public static Object[] unsafePutObject(Unsafe unsafe, Object obj, long offset, Object value1, Object value2, Object value3) {
	Object[] res = new Object[3];
	unsafe.putObject(obj, offset, value1);
	res[0] = unsafe.getObject(obj, offset);
	unsafe.putObjectVolatile(obj, offset, value2);
	res[1] = unsafe.getObject(obj, offset);
	unsafe.putOrderedObject(obj, offset, value3);
	res[2] = unsafe.getObject(obj, offset);
	return res;
	}

	@SuppressWarnings("all")
	public static long unsafeGetAddress(Unsafe unsafe, long offset) {
	return unsafe.getAddress(offset);
	}

	@SuppressWarnings("all")
	public static long unsafePutAddress(Unsafe unsafe, long offset, long value) {
	long res = 1;
	unsafe.putAddress(offset, value);
	res += unsafe.getAddress(offset);
	return res;
	}

	@SuppressWarnings("all")
	public static double unsafeDirectMemoryRead(Unsafe unsafe, long address) {
	// Unsafe.getBoolean(long) and Unsafe.getObject(long) do not exist
	// @formatter:off
	return unsafe.getByte(address) +
	unsafe.getShort(address + 8) +
	unsafe.getChar(address + 16) +
	unsafe.getInt(address + 24) +
	unsafe.getLong(address + 32) +
	unsafe.getFloat(address + 40) +
	unsafe.getDouble(address + 48);
	// @formatter:on
	}

	@SuppressWarnings("all")
	public static double unsafeDirectMemoryWrite(Unsafe unsafe, long address, long value) {
	// Unsafe.putBoolean(long) and Unsafe.putObject(long) do not exist
	unsafe.putByte(address + 0, (byte) value);
	unsafe.putShort(address + 8, (short) value);
	unsafe.putChar(address + 16, (char) value);
	unsafe.putInt(address + 24, (int) value);
	unsafe.putLong(address + 32, value);
	unsafe.putFloat(address + 40, value);
	unsafe.putDouble(address + 48, value);
	return unsafeDirectMemoryRead(unsafe, address);
	}

	static class MyObject {
	int i = 42;
	final int j = 24;
	final String a = "a";
	final String b;

	MyObject(String b) {
	this.b = b;
	Thread.dumpStack();
	}

	@Override
	public String toString() {
	return j + a + b + i;
	}
	}

	@SuppressWarnings("all")
	public static String unsafeAllocateInstance(Unsafe unsafe) throws InstantiationException {
	return unsafe.allocateInstance(MyObject.class).toString();
	}

	@Test
	public void testAllocateInstance() throws Exception {
	unsafeAllocateInstance(UNSAFE);
	test("unsafeAllocateInstance", UNSAFE);
	test("unsafeAllocateInstance", (Object) null);
	}

	@Test
	public void testGetAndAddInt() throws Exception {
	Foo f1 = new Foo();
	Foo f2 = new Foo();
	long offset = off(f1, "i");
	Class<?>[] parameterTypes = new Class<?>[]{Object.class, long.class, int.class};
	for (int delta = Integer.MAX_VALUE - 10; delta < Integer.MAX_VALUE; delta++) {
	Object[] args1 = new Object[]{f1, offset, delta};
	Object[] args2 = new Object[]{f2, offset, delta};
	testSubstitution("getAndAddInt", Unsafe.class, "getAndAddInt", parameterTypes, UNSAFE, args1, args2);
	}
	}

	public static int getAndAddInt(Object obj, long offset, int delta) {
	return UNSAFE.getAndAddInt(obj, offset, delta);
	}

	@Test
	public void testGetAndAddLong() throws Exception {
	Foo f1 = new Foo();
	Foo f2 = new Foo();
	long offset = off(f1, "l");
	Class<?>[] parameterTypes = new Class<?>[]{Object.class, long.class, long.class};
	for (long delta = Long.MAX_VALUE - 10; delta < Long.MAX_VALUE; delta++) {
	Object[] args1 = new Object[]{f1, offset, delta};
	Object[] args2 = new Object[]{f2, offset, delta};
	testSubstitution("getAndAddLong", Unsafe.class, "getAndAddLong", parameterTypes, UNSAFE, args1, args2);
	}
	}

	public static long getAndAddLong(Object obj, long offset, long delta) {
	return UNSAFE.getAndAddLong(obj, offset, delta);
	}

	@Test
	public void testGetAndSetInt() throws Exception {
	Foo f1 = new Foo();
	Foo f2 = new Foo();
	long offset = off(f1, "i");
	Class<?>[] parameterTypes = new Class<?>[]{Object.class, long.class, int.class};
	for (int delta = Integer.MAX_VALUE - 10; delta < Integer.MAX_VALUE; delta++) {
	Object[] args1 = new Object[]{f1, offset, delta};
	Object[] args2 = new Object[]{f2, offset, delta};
	testSubstitution("getAndSetInt", Unsafe.class, "getAndSetInt", parameterTypes, UNSAFE, args1, args2);
	}
	}

	public static int getAndSetInt(Object obj, long offset, int newValue) {
	return UNSAFE.getAndSetInt(obj, offset, newValue);
	}

	@Test
	public void testGetAndSetLong() throws Exception {
	Foo f1 = new Foo();
	Foo f2 = new Foo();
	long offset = off(f1, "l");
	Class<?>[] parameterTypes = new Class<?>[]{Object.class, long.class, long.class};
	for (long newValue = Long.MAX_VALUE - 10; newValue < Long.MAX_VALUE; newValue++) {
	Object[] args1 = new Object[]{f1, offset, newValue};
	Object[] args2 = new Object[]{f2, offset, newValue};
	testSubstitution("getAndSetLong", Unsafe.class, "getAndSetLong", parameterTypes, UNSAFE, args1, args2);
	}
	}

	public static long getAndSetLong(Object obj, long offset, long newValue) {
	return UNSAFE.getAndSetLong(obj, offset, newValue);
	}

	@Test
	public void testGetAndSetObject() throws Exception {
	Foo f1 = new Foo();
	Foo f2 = new Foo();
	long offset = off(f1, "o");
	Class<?>[] parameterTypes = new Class<?>[]{Object.class, long.class, Object.class};
	for (long i = 0; i < 10; i++) {
	Object o = new Object();
	Object[] args1 = new Object[]{f1, offset, o};
	Object[] args2 = new Object[]{f2, offset, o};
	testSubstitution("getAndSetObject", Unsafe.class, "getAndSetObject", parameterTypes, UNSAFE, args1, args2);
	System.gc();
	}
	}

	public static Object getAndSetObject(Object obj, long offset, Object newValue) {
	return UNSAFE.getAndSetObject(obj, offset, newValue);
	}

	}