test/hotspot/jtreg/compiler/unsafe/JdkInternalMiscUnsafeUnalignedAccess.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2016 SAP SE. 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.
  */

 /*
  * @test
  * @bug 8158260
  * @summary Test unaligned Unsafe accesses
  * @modules java.base/jdk.internal.misc:+open
  *
  * @run main/othervm -Diters=20000 -XX:-UseOnStackReplacement -XX:-BackgroundCompilation
  *      compiler.unsafe.JdkInternalMiscUnsafeUnalignedAccess
  * @author volker.simonis@gmail.com
  */

 package compiler.unsafe;

 import jdk.internal.misc.Unsafe;

 import java.lang.reflect.Field;
 import java.nio.ByteOrder;

 public class JdkInternalMiscUnsafeUnalignedAccess {
     static final int ITERS = Integer.getInteger("iters", 20_000);
     private static final boolean BIG_ENDIAN = ByteOrder.nativeOrder().equals(ByteOrder.BIG_ENDIAN);
     private static final Unsafe UNSAFE;
     private static final int SIZE = 1024;
     private static long memory;

     static {
         try {
             Field unsafeField = Unsafe.class.getDeclaredField("theUnsafe");
             unsafeField.setAccessible(true);
             UNSAFE = (Unsafe) unsafeField.get(null);
         }
         catch (Exception e) {
             throw new RuntimeException("Unable to get Unsafe instance.", e);
         }
     }

     static int getInt_0() {
         return UNSAFE.getInt(memory + 0);
     }
     static int getInt_1() {
         return UNSAFE.getInt(memory + 1);
     }
     static int getInt_4() {
         return UNSAFE.getInt(memory + 4);
     }
     static int getInt_17() {
         return UNSAFE.getInt(memory + 17);
     }

     static long getIntAsLong_0() {
         return UNSAFE.getInt(memory + 0);
     }
     static long getIntAsLong_1() {
         return UNSAFE.getInt(memory + 1);
     }
     static long getIntAsLong_4() {
         return UNSAFE.getInt(memory + 4);
     }
     static long getIntAsLong_17() {
         return UNSAFE.getInt(memory + 17);
     }

     static long getLong_0() {
         return UNSAFE.getLong(memory + 0);
     }
     static long getLong_1() {
         return UNSAFE.getLong(memory + 1);
     }
     static long getLong_4() {
         return UNSAFE.getLong(memory + 4);
     }
     static long getLong_8() {
         return UNSAFE.getLong(memory + 8);
     }
     static long getLong_17() {
         return UNSAFE.getLong(memory + 17);
     }

     static void putInt_0(int i) {
         UNSAFE.putInt(memory + 0, i);
     }
     static void putInt_1(int i) {
         UNSAFE.putInt(memory + 1, i);
     }
     static void putInt_4(int i) {
         UNSAFE.putInt(memory + 4, i);
     }
     static void putInt_17(int i) {
         UNSAFE.putInt(memory + 17, i);
     }

     static void putLong_0(long l) {
         UNSAFE.putLong(memory + 0, l);
     }
     static void putLong_1(long l) {
         UNSAFE.putLong(memory + 1, l);
     }
     static void putLong_4(long l) {
         UNSAFE.putLong(memory + 4, l);
     }
     static void putLong_8(long l) {
         UNSAFE.putLong(memory + 8, l);
     }
     static void putLong_17(long l) {
         UNSAFE.putLong(memory + 17, l);
     }

     public static void main(String[] args) throws Exception {

         if (!UNSAFE.unalignedAccess()) {
             System.out.println("Platform is not supporting unaligned access - nothing to test.");
             return;
         }

         memory = UNSAFE.allocateMemory(SIZE);

         UNSAFE.putInt(memory +  0, 0x00112233);
         UNSAFE.putInt(memory +  4, 0x44556677);
         UNSAFE.putInt(memory +  8, 0x8899aabb);
         UNSAFE.putInt(memory + 12, 0xccddeeff);
         UNSAFE.putInt(memory + 16, 0x01234567);
         UNSAFE.putInt(memory + 20, 0x89abcdef);
         UNSAFE.putInt(memory + 24, 0x01234567);

         // Unsafe.getInt()
         int res;
         for (int i = 0; i < ITERS; i++) {
             res = getInt_0();
             if (res != 0x00112233) {
                 throw new Exception(res + " != 0x00112233");
             }
         }

         for (int i = 0; i < ITERS; i++) {
             res = getInt_1();
             if (res != (BIG_ENDIAN ? 0x11223344 : 0x77001122)) {
                 throw new Exception(res + " != " + (BIG_ENDIAN ? 0x11223344 : 0x77001122));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             res = getInt_4();
             if (res != 0x44556677) {
                 throw new Exception(res + " != 0x44556677");
             }
         }

         for (int i = 0; i < ITERS; i++) {
             res = getInt_17();
             if (res != (BIG_ENDIAN ? 0x23456789 : 0xef012345)) {
                 throw new Exception(res + " != " + (BIG_ENDIAN ? 0x23456789 : 0xef012345));
             }
         }

         // (long)Unsafe.getInt()
         long lres;
         for (int i = 0; i < ITERS; i++) {
             lres = getIntAsLong_0();
             if (lres != (long)0x00112233) {
                 throw new Exception(lres + " != 0x00112233");
             }
         }

         for (int i = 0; i < ITERS; i++) {
             lres = getIntAsLong_1();
             if (lres != (BIG_ENDIAN ? (long)0x11223344 : (long)0x77001122)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? (long)0x11223344 : (long)0x77001122));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             lres = getIntAsLong_4();
             if (lres != (long)0x44556677) {
                 throw new Exception(lres + " != 0x44556677");
             }
         }

         for (int i = 0; i < ITERS; i++) {
             lres = getIntAsLong_17();
             if (lres != (BIG_ENDIAN ? (long)0x23456789 : (long)0xef012345)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? (long)0x23456789 : (long)0xef012345));
             }
         }

         // Unsafe.getLong()
         for (int i = 0; i < ITERS; i++) {
             lres = getLong_0();
             if (lres != (BIG_ENDIAN ? 0x0011223344556677L : 0x4455667700112233L)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x0011223344556677L : 0x4455667700112233L));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             lres = getLong_1();
             if (lres != (BIG_ENDIAN ? 0x1122334455667788L : 0xbb44556677001122L)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x1122334455667788L : 0xbb44556677001122L));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             lres = getLong_4();
             if (lres != (BIG_ENDIAN ? 0x445566778899aabbL : 0x8899aabb44556677L)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x445566778899aabbL : 0x8899aabb44556677L));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             lres = getLong_8();
             if (lres != (BIG_ENDIAN ? 0x8899aabbccddeeffL : 0xccddeeff8899aabbL)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x8899aabbccddeeffL : 0xccddeeff8899aabbL));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             lres = getLong_17();
             if (lres != (BIG_ENDIAN ? 0x23456789abcdef01L : 0x6789abcdef012345L)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x23456789abcdef01L : 0x6789abcdef012345L));
             }
         }

         // Unsafe.putInt()
         for (int i = 0; i < ITERS; i++) {
             putInt_0(0x00112233);
             res = getInt_0();
             if (res != 0x00112233) {
                 throw new Exception(res + " != 0x00112233");
             }
         }

         for (int i = 0; i < ITERS; i++) {
             putInt_1(BIG_ENDIAN ? 0x11223344 : 0x77001122);
             res = getInt_1();
             if (res != (BIG_ENDIAN ? 0x11223344 : 0x77001122)) {
                 throw new Exception(res + " != " + (BIG_ENDIAN ? 0x11223344 : 0x77001122));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             putInt_4(0x44556677);
             res = getInt_4();
             if (res != 0x44556677) {
                 throw new Exception(res + " != 0x44556677");
             }
         }

         for (int i = 0; i < ITERS; i++) {
             putInt_17(BIG_ENDIAN ? 0x23456789 : 0xef012345);
             res = getInt_17();
             if (res != (BIG_ENDIAN ? 0x23456789 : 0xef012345)) {
                 throw new Exception(res + " != " + (BIG_ENDIAN ? 0x23456789 : 0xef012345));
             }
         }


         // Unsafe.putLong()
         for (int i = 0; i < ITERS; i++) {
             putLong_0(BIG_ENDIAN ? 0x0011223344556677L : 0x4455667700112233L);
             lres = getLong_0();
             if (lres != (BIG_ENDIAN ? 0x0011223344556677L : 0x4455667700112233L)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x0011223344556677L : 0x4455667700112233L));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             putLong_1(BIG_ENDIAN ? 0x1122334455667788L : 0xbb44556677001122L);
             lres = getLong_1();
             if (lres != (BIG_ENDIAN ? 0x1122334455667788L : 0xbb44556677001122L)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x1122334455667788L : 0xbb44556677001122L));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             putLong_4(BIG_ENDIAN ? 0x445566778899aabbL : 0x8899aabb44556677L);
             lres = getLong_4();
             if (lres != (BIG_ENDIAN ? 0x445566778899aabbL : 0x8899aabb44556677L)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x445566778899aabbL : 0x8899aabb44556677L));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             putLong_8(BIG_ENDIAN ? 0x8899aabbccddeeffL : 0xccddeeff8899aabbL);
             lres = getLong_8();
             if (lres != (BIG_ENDIAN ? 0x8899aabbccddeeffL : 0xccddeeff8899aabbL)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x8899aabbccddeeffL : 0xccddeeff8899aabbL));
             }
         }

         for (int i = 0; i < ITERS; i++) {
             putLong_17(BIG_ENDIAN ? 0x23456789abcdef01L : 0x6789abcdef012345L);
             lres = getLong_17();
             if (lres != (BIG_ENDIAN ? 0x23456789abcdef01L : 0x6789abcdef012345L)) {
                 throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x23456789abcdef01L : 0x6789abcdef012345L));
             }
         }
     }

 }
	/*
	* Copyright (c) 2016 SAP SE. 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.
	*/

	/*
	* @test
	* @bug 8158260
	* @summary Test unaligned Unsafe accesses
	* @modules java.base/jdk.internal.misc:+open
	*
	* @run main/othervm -Diters=20000 -XX:-UseOnStackReplacement -XX:-BackgroundCompilation
	* compiler.unsafe.JdkInternalMiscUnsafeUnalignedAccess
	* @author volker.simonis@gmail.com
	*/

	package compiler.unsafe;

	import jdk.internal.misc.Unsafe;

	import java.lang.reflect.Field;
	import java.nio.ByteOrder;

	public class JdkInternalMiscUnsafeUnalignedAccess {
	static final int ITERS = Integer.getInteger("iters", 20_000);
	private static final boolean BIG_ENDIAN = ByteOrder.nativeOrder().equals(ByteOrder.BIG_ENDIAN);
	private static final Unsafe UNSAFE;
	private static final int SIZE = 1024;
	private static long memory;

	static {
	try {
	Field unsafeField = Unsafe.class.getDeclaredField("theUnsafe");
	unsafeField.setAccessible(true);
	UNSAFE = (Unsafe) unsafeField.get(null);
	}
	catch (Exception e) {
	throw new RuntimeException("Unable to get Unsafe instance.", e);
	}
	}

	static int getInt_0() {
	return UNSAFE.getInt(memory + 0);
	}
	static int getInt_1() {
	return UNSAFE.getInt(memory + 1);
	}
	static int getInt_4() {
	return UNSAFE.getInt(memory + 4);
	}
	static int getInt_17() {
	return UNSAFE.getInt(memory + 17);
	}

	static long getIntAsLong_0() {
	return UNSAFE.getInt(memory + 0);
	}
	static long getIntAsLong_1() {
	return UNSAFE.getInt(memory + 1);
	}
	static long getIntAsLong_4() {
	return UNSAFE.getInt(memory + 4);
	}
	static long getIntAsLong_17() {
	return UNSAFE.getInt(memory + 17);
	}

	static long getLong_0() {
	return UNSAFE.getLong(memory + 0);
	}
	static long getLong_1() {
	return UNSAFE.getLong(memory + 1);
	}
	static long getLong_4() {
	return UNSAFE.getLong(memory + 4);
	}
	static long getLong_8() {
	return UNSAFE.getLong(memory + 8);
	}
	static long getLong_17() {
	return UNSAFE.getLong(memory + 17);
	}

	static void putInt_0(int i) {
	UNSAFE.putInt(memory + 0, i);
	}
	static void putInt_1(int i) {
	UNSAFE.putInt(memory + 1, i);
	}
	static void putInt_4(int i) {
	UNSAFE.putInt(memory + 4, i);
	}
	static void putInt_17(int i) {
	UNSAFE.putInt(memory + 17, i);
	}

	static void putLong_0(long l) {
	UNSAFE.putLong(memory + 0, l);
	}
	static void putLong_1(long l) {
	UNSAFE.putLong(memory + 1, l);
	}
	static void putLong_4(long l) {
	UNSAFE.putLong(memory + 4, l);
	}
	static void putLong_8(long l) {
	UNSAFE.putLong(memory + 8, l);
	}
	static void putLong_17(long l) {
	UNSAFE.putLong(memory + 17, l);
	}

	public static void main(String[] args) throws Exception {

	if (!UNSAFE.unalignedAccess()) {
	System.out.println("Platform is not supporting unaligned access - nothing to test.");
	return;
	}

	memory = UNSAFE.allocateMemory(SIZE);

	UNSAFE.putInt(memory + 0, 0x00112233);
	UNSAFE.putInt(memory + 4, 0x44556677);
	UNSAFE.putInt(memory + 8, 0x8899aabb);
	UNSAFE.putInt(memory + 12, 0xccddeeff);
	UNSAFE.putInt(memory + 16, 0x01234567);
	UNSAFE.putInt(memory + 20, 0x89abcdef);
	UNSAFE.putInt(memory + 24, 0x01234567);

	// Unsafe.getInt()
	int res;
	for (int i = 0; i < ITERS; i++) {
	res = getInt_0();
	if (res != 0x00112233) {
	throw new Exception(res + " != 0x00112233");
	}
	}

	for (int i = 0; i < ITERS; i++) {
	res = getInt_1();
	if (res != (BIG_ENDIAN ? 0x11223344 : 0x77001122)) {
	throw new Exception(res + " != " + (BIG_ENDIAN ? 0x11223344 : 0x77001122));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	res = getInt_4();
	if (res != 0x44556677) {
	throw new Exception(res + " != 0x44556677");
	}
	}

	for (int i = 0; i < ITERS; i++) {
	res = getInt_17();
	if (res != (BIG_ENDIAN ? 0x23456789 : 0xef012345)) {
	throw new Exception(res + " != " + (BIG_ENDIAN ? 0x23456789 : 0xef012345));
	}
	}

	// (long)Unsafe.getInt()
	long lres;
	for (int i = 0; i < ITERS; i++) {
	lres = getIntAsLong_0();
	if (lres != (long)0x00112233) {
	throw new Exception(lres + " != 0x00112233");
	}
	}

	for (int i = 0; i < ITERS; i++) {
	lres = getIntAsLong_1();
	if (lres != (BIG_ENDIAN ? (long)0x11223344 : (long)0x77001122)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? (long)0x11223344 : (long)0x77001122));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	lres = getIntAsLong_4();
	if (lres != (long)0x44556677) {
	throw new Exception(lres + " != 0x44556677");
	}
	}

	for (int i = 0; i < ITERS; i++) {
	lres = getIntAsLong_17();
	if (lres != (BIG_ENDIAN ? (long)0x23456789 : (long)0xef012345)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? (long)0x23456789 : (long)0xef012345));
	}
	}

	// Unsafe.getLong()
	for (int i = 0; i < ITERS; i++) {
	lres = getLong_0();
	if (lres != (BIG_ENDIAN ? 0x0011223344556677L : 0x4455667700112233L)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x0011223344556677L : 0x4455667700112233L));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	lres = getLong_1();
	if (lres != (BIG_ENDIAN ? 0x1122334455667788L : 0xbb44556677001122L)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x1122334455667788L : 0xbb44556677001122L));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	lres = getLong_4();
	if (lres != (BIG_ENDIAN ? 0x445566778899aabbL : 0x8899aabb44556677L)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x445566778899aabbL : 0x8899aabb44556677L));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	lres = getLong_8();
	if (lres != (BIG_ENDIAN ? 0x8899aabbccddeeffL : 0xccddeeff8899aabbL)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x8899aabbccddeeffL : 0xccddeeff8899aabbL));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	lres = getLong_17();
	if (lres != (BIG_ENDIAN ? 0x23456789abcdef01L : 0x6789abcdef012345L)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x23456789abcdef01L : 0x6789abcdef012345L));
	}
	}

	// Unsafe.putInt()
	for (int i = 0; i < ITERS; i++) {
	putInt_0(0x00112233);
	res = getInt_0();
	if (res != 0x00112233) {
	throw new Exception(res + " != 0x00112233");
	}
	}

	for (int i = 0; i < ITERS; i++) {
	putInt_1(BIG_ENDIAN ? 0x11223344 : 0x77001122);
	res = getInt_1();
	if (res != (BIG_ENDIAN ? 0x11223344 : 0x77001122)) {
	throw new Exception(res + " != " + (BIG_ENDIAN ? 0x11223344 : 0x77001122));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	putInt_4(0x44556677);
	res = getInt_4();
	if (res != 0x44556677) {
	throw new Exception(res + " != 0x44556677");
	}
	}

	for (int i = 0; i < ITERS; i++) {
	putInt_17(BIG_ENDIAN ? 0x23456789 : 0xef012345);
	res = getInt_17();
	if (res != (BIG_ENDIAN ? 0x23456789 : 0xef012345)) {
	throw new Exception(res + " != " + (BIG_ENDIAN ? 0x23456789 : 0xef012345));
	}
	}


	// Unsafe.putLong()
	for (int i = 0; i < ITERS; i++) {
	putLong_0(BIG_ENDIAN ? 0x0011223344556677L : 0x4455667700112233L);
	lres = getLong_0();
	if (lres != (BIG_ENDIAN ? 0x0011223344556677L : 0x4455667700112233L)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x0011223344556677L : 0x4455667700112233L));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	putLong_1(BIG_ENDIAN ? 0x1122334455667788L : 0xbb44556677001122L);
	lres = getLong_1();
	if (lres != (BIG_ENDIAN ? 0x1122334455667788L : 0xbb44556677001122L)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x1122334455667788L : 0xbb44556677001122L));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	putLong_4(BIG_ENDIAN ? 0x445566778899aabbL : 0x8899aabb44556677L);
	lres = getLong_4();
	if (lres != (BIG_ENDIAN ? 0x445566778899aabbL : 0x8899aabb44556677L)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x445566778899aabbL : 0x8899aabb44556677L));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	putLong_8(BIG_ENDIAN ? 0x8899aabbccddeeffL : 0xccddeeff8899aabbL);
	lres = getLong_8();
	if (lres != (BIG_ENDIAN ? 0x8899aabbccddeeffL : 0xccddeeff8899aabbL)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x8899aabbccddeeffL : 0xccddeeff8899aabbL));
	}
	}

	for (int i = 0; i < ITERS; i++) {
	putLong_17(BIG_ENDIAN ? 0x23456789abcdef01L : 0x6789abcdef012345L);
	lres = getLong_17();
	if (lres != (BIG_ENDIAN ? 0x23456789abcdef01L : 0x6789abcdef012345L)) {
	throw new Exception(lres + " != " + (BIG_ENDIAN ? 0x23456789abcdef01L : 0x6789abcdef012345L));
	}
	}
	}

	}