--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/unsafe/SunMiscUnsafeAccessTestInt.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,218 @@
+/*
+ * Copyright (c) 2015, 2017, 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.
+ */
+
+/*
+ * @test
+ * @bug 8143628
+ * @summary Test unsafe access for int
+ *
+ * @modules jdk.unsupported/sun.misc
+ * @run testng/othervm -Diters=100 -Xint compiler.unsafe.SunMiscUnsafeAccessTestInt
+ * @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 compiler.unsafe.SunMiscUnsafeAccessTestInt
+ * @run testng/othervm -Diters=20000 -XX:-TieredCompilation compiler.unsafe.SunMiscUnsafeAccessTestInt
+ * @run testng/othervm -Diters=20000 compiler.unsafe.SunMiscUnsafeAccessTestInt
+ */
+
+package compiler.unsafe;
+
+import org.testng.annotations.Test;
+
+import java.lang.reflect.Field;
+
+import static org.testng.Assert.*;
+
+public class SunMiscUnsafeAccessTestInt {
+ static final int ITERS = Integer.getInteger("iters", 1);
+ static final int WEAK_ATTEMPTS = Integer.getInteger("weakAttempts", 10);
+
+ static final sun.misc.Unsafe UNSAFE;
+
+ static final long V_OFFSET;
+
+ static final Object STATIC_V_BASE;
+
+ static final long STATIC_V_OFFSET;
+
+ static int ARRAY_OFFSET;
+
+ static int ARRAY_SHIFT;
+
+ static {
+ try {
+ Field f = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
+ f.setAccessible(true);
+ UNSAFE = (sun.misc.Unsafe) f.get(null);
+ } catch (Exception e) {
+ throw new RuntimeException("Unable to get Unsafe instance.", e);
+ }
+
+ try {
+ Field staticVField = SunMiscUnsafeAccessTestInt.class.getDeclaredField("static_v");
+ STATIC_V_BASE = UNSAFE.staticFieldBase(staticVField);
+ STATIC_V_OFFSET = UNSAFE.staticFieldOffset(staticVField);
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+
+ try {
+ Field vField = SunMiscUnsafeAccessTestInt.class.getDeclaredField("v");
+ V_OFFSET = UNSAFE.objectFieldOffset(vField);
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+
+ ARRAY_OFFSET = UNSAFE.arrayBaseOffset(int[].class);
+ int ascale = UNSAFE.arrayIndexScale(int[].class);
+ ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
+ }
+
+ static int static_v;
+
+ int v;
+
+ @Test
+ public void testFieldInstance() {
+ SunMiscUnsafeAccessTestInt t = new SunMiscUnsafeAccessTestInt();
+ for (int c = 0; c < ITERS; c++) {
+ testAccess(t, V_OFFSET);
+ }
+ }
+
+ @Test
+ public void testFieldStatic() {
+ for (int c = 0; c < ITERS; c++) {
+ testAccess(STATIC_V_BASE, STATIC_V_OFFSET);
+ }
+ }
+
+ @Test
+ public void testArray() {
+ int[] array = new int[10];
+ for (int c = 0; c < ITERS; c++) {
+ for (int i = 0; i < array.length; i++) {
+ testAccess(array, (((long) i) << ARRAY_SHIFT) + ARRAY_OFFSET);
+ }
+ }
+ }
+
+ @Test
+ public void testArrayOffHeap() {
+ int size = 10;
+ long address = UNSAFE.allocateMemory(size << ARRAY_SHIFT);
+ try {
+ for (int c = 0; c < ITERS; c++) {
+ for (int i = 0; i < size; i++) {
+ testAccess(null, (((long) i) << ARRAY_SHIFT) + address);
+ }
+ }
+ } finally {
+ UNSAFE.freeMemory(address);
+ }
+ }
+
+ @Test
+ public void testArrayOffHeapDirect() {
+ int size = 10;
+ long address = UNSAFE.allocateMemory(size << ARRAY_SHIFT);
+ try {
+ for (int c = 0; c < ITERS; c++) {
+ for (int i = 0; i < size; i++) {
+ testAccess((((long) i) << ARRAY_SHIFT) + address);
+ }
+ }
+ } finally {
+ UNSAFE.freeMemory(address);
+ }
+ }
+
+ static void testAccess(Object base, long offset) {
+ // Plain
+ {
+ UNSAFE.putInt(base, offset, 0x01234567);
+ int x = UNSAFE.getInt(base, offset);
+ assertEquals(x, 0x01234567, "set int value");
+ }
+
+ // Volatile
+ {
+ UNSAFE.putIntVolatile(base, offset, 0x89ABCDEF);
+ int x = UNSAFE.getIntVolatile(base, offset);
+ assertEquals(x, 0x89ABCDEF, "putVolatile int value");
+ }
+
+ // Lazy
+ {
+ UNSAFE.putOrderedInt(base, offset, 0x01234567);
+ int x = UNSAFE.getIntVolatile(base, offset);
+ assertEquals(x, 0x01234567, "putRelease int value");
+ }
+
+
+
+ UNSAFE.putInt(base, offset, 0x01234567);
+
+ // Compare
+ {
+ boolean r = UNSAFE.compareAndSwapInt(base, offset, 0x01234567, 0x89ABCDEF);
+ assertEquals(r, true, "success compareAndSwap int");
+ int x = UNSAFE.getInt(base, offset);
+ assertEquals(x, 0x89ABCDEF, "success compareAndSwap int value");
+ }
+
+ {
+ boolean r = UNSAFE.compareAndSwapInt(base, offset, 0x01234567, 0xCAFEBABE);
+ assertEquals(r, false, "failing compareAndSwap int");
+ int x = UNSAFE.getInt(base, offset);
+ assertEquals(x, 0x89ABCDEF, "failing compareAndSwap int value");
+ }
+
+ UNSAFE.putInt(base, offset, 0x89ABCDEF);
+
+ // Compare set and get
+ {
+ int o = UNSAFE.getAndSetInt(base, offset, 0x01234567);
+ assertEquals(o, 0x89ABCDEF, "getAndSet int");
+ int x = UNSAFE.getInt(base, offset);
+ assertEquals(x, 0x01234567, "getAndSet int value");
+ }
+
+ UNSAFE.putInt(base, offset, 0x01234567);
+
+ // get and add, add and get
+ {
+ int o = UNSAFE.getAndAddInt(base, offset, 0x89ABCDEF);
+ assertEquals(o, 0x01234567, "getAndAdd int");
+ int x = UNSAFE.getInt(base, offset);
+ assertEquals(x, (int)(0x01234567 + 0x89ABCDEF), "getAndAdd int");
+ }
+ }
+
+ static void testAccess(long address) {
+ // Plain
+ {
+ UNSAFE.putInt(address, 0x01234567);
+ int x = UNSAFE.getInt(address);
+ assertEquals(x, 0x01234567, "set int value");
+ }
+ }
+}