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8143628: Fork sun.misc.Unsafe and jdk.internal.misc.Unsafe native method tables

Browse source 
Reviewed-by: shade, dholmes, alanb, chegar, mchung, roland
This commit is contained in:
Paul Sandoz 2015-12-09 14:54:40 +01:00
parent 1f2a9c1407
commit 4d4c7ad974
22 changed files with 3690 additions and 9 deletions
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7
hotspot/src/share/vm/prims/nativeLookup.cpp
View file

@ -107,7 +107,8 @@ char* NativeLookup::long_jni_name(const methodHandle& method) {
}
extern "C" {
void JNICALL JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafecls);
void JNICALL JVM_RegisterJDKInternalMiscUnsafeMethods(JNIEnv *env, jclass unsafecls);
void JNICALL JVM_RegisterSunMiscUnsafeMethods(JNIEnv *env, jclass unsafecls);
void JNICALL JVM_RegisterMethodHandleMethods(JNIEnv *env, jclass unsafecls);
void JNICALL JVM_RegisterPerfMethods(JNIEnv *env, jclass perfclass);
void JNICALL JVM_RegisterWhiteBoxMethods(JNIEnv *env, jclass wbclass);
@ -121,8 +122,8 @@ extern "C" {
#define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f)
static JNINativeMethod lookup_special_native_methods[] = {
{ CC"Java_jdk_internal_misc_Unsafe_registerNatives", NULL, FN_PTR(JVM_RegisterUnsafeMethods) },
{ CC"Java_sun_misc_Unsafe_registerNatives", NULL, FN_PTR(JVM_RegisterUnsafeMethods) },
{ CC"Java_jdk_internal_misc_Unsafe_registerNatives", NULL, FN_PTR(JVM_RegisterJDKInternalMiscUnsafeMethods) },
{ CC"Java_sun_misc_Unsafe_registerNatives", NULL, FN_PTR(JVM_RegisterSunMiscUnsafeMethods) },
{ CC"Java_java_lang_invoke_MethodHandleNatives_registerNatives", NULL, FN_PTR(JVM_RegisterMethodHandleMethods) },
{ CC"Java_sun_misc_Perf_registerNatives", NULL, FN_PTR(JVM_RegisterPerfMethods) },
{ CC"Java_sun_hotspot_WhiteBox_registerNatives", NULL, FN_PTR(JVM_RegisterWhiteBoxMethods) },

90
hotspot/src/share/vm/prims/unsafe.cpp
View file

@ -1227,8 +1227,76 @@ UNSAFE_END
{CC "put" #Byte, CC "(" ADR#B ")V", FN_PTR(Unsafe_SetNative##Byte)}
static JNINativeMethod sun_misc_Unsafe_methods[] = {
{CC "getObject", CC "(" OBJ "J)" OBJ "", FN_PTR(Unsafe_GetObject)},
{CC "putObject", CC "(" OBJ "J" OBJ ")V", FN_PTR(Unsafe_SetObject)},
{CC "getObjectVolatile",CC "(" OBJ "J)" OBJ "", FN_PTR(Unsafe_GetObjectVolatile)},
{CC "putObjectVolatile",CC "(" OBJ "J" OBJ ")V", FN_PTR(Unsafe_SetObjectVolatile)},
static JNINativeMethod methods[] = {
{CC "getUncompressedObject", CC "(" ADR ")" OBJ, FN_PTR(Unsafe_GetUncompressedObject)},
{CC "getJavaMirror", CC "(" ADR ")" CLS, FN_PTR(Unsafe_GetJavaMirror)},
{CC "getKlassPointer", CC "(" OBJ ")" ADR, FN_PTR(Unsafe_GetKlassPointer)},
DECLARE_GETPUTOOP(Boolean, Z),
DECLARE_GETPUTOOP(Byte, B),
DECLARE_GETPUTOOP(Short, S),
DECLARE_GETPUTOOP(Char, C),
DECLARE_GETPUTOOP(Int, I),
DECLARE_GETPUTOOP(Long, J),
DECLARE_GETPUTOOP(Float, F),
DECLARE_GETPUTOOP(Double, D),
DECLARE_GETPUTNATIVE(Byte, B),
DECLARE_GETPUTNATIVE(Short, S),
DECLARE_GETPUTNATIVE(Char, C),
DECLARE_GETPUTNATIVE(Int, I),
DECLARE_GETPUTNATIVE(Long, J),
DECLARE_GETPUTNATIVE(Float, F),
DECLARE_GETPUTNATIVE(Double, D),
{CC "getAddress", CC "(" ADR ")" ADR, FN_PTR(Unsafe_GetNativeAddress)},
{CC "putAddress", CC "(" ADR "" ADR ")V", FN_PTR(Unsafe_SetNativeAddress)},
{CC "allocateMemory", CC "(J)" ADR, FN_PTR(Unsafe_AllocateMemory)},
{CC "reallocateMemory", CC "(" ADR "J)" ADR, FN_PTR(Unsafe_ReallocateMemory)},
{CC "freeMemory", CC "(" ADR ")V", FN_PTR(Unsafe_FreeMemory)},
{CC "objectFieldOffset", CC "(" FLD ")J", FN_PTR(Unsafe_ObjectFieldOffset)},
{CC "staticFieldOffset", CC "(" FLD ")J", FN_PTR(Unsafe_StaticFieldOffset)},
{CC "staticFieldBase", CC "(" FLD ")" OBJ, FN_PTR(Unsafe_StaticFieldBaseFromField)},
{CC "ensureClassInitialized",CC "(" CLS ")V", FN_PTR(Unsafe_EnsureClassInitialized)},
{CC "arrayBaseOffset", CC "(" CLS ")I", FN_PTR(Unsafe_ArrayBaseOffset)},
{CC "arrayIndexScale", CC "(" CLS ")I", FN_PTR(Unsafe_ArrayIndexScale)},
{CC "addressSize", CC "()I", FN_PTR(Unsafe_AddressSize)},
{CC "pageSize", CC "()I", FN_PTR(Unsafe_PageSize)},
{CC "defineClass", CC "(" DC_Args ")" CLS, FN_PTR(Unsafe_DefineClass)},
{CC "allocateInstance", CC "(" CLS ")" OBJ, FN_PTR(Unsafe_AllocateInstance)},
{CC "throwException", CC "(" THR ")V", FN_PTR(Unsafe_ThrowException)},
{CC "compareAndSwapObject", CC "(" OBJ "J" OBJ "" OBJ ")Z", FN_PTR(Unsafe_CompareAndSwapObject)},
{CC "compareAndSwapInt", CC "(" OBJ "J""I""I"")Z", FN_PTR(Unsafe_CompareAndSwapInt)},
{CC "compareAndSwapLong", CC "(" OBJ "J""J""J"")Z", FN_PTR(Unsafe_CompareAndSwapLong)},
{CC "putOrderedObject", CC "(" OBJ "J" OBJ ")V", FN_PTR(Unsafe_SetOrderedObject)},
{CC "putOrderedInt", CC "(" OBJ "JI)V", FN_PTR(Unsafe_SetOrderedInt)},
{CC "putOrderedLong", CC "(" OBJ "JJ)V", FN_PTR(Unsafe_SetOrderedLong)},
{CC "park", CC "(ZJ)V", FN_PTR(Unsafe_Park)},
{CC "unpark", CC "(" OBJ ")V", FN_PTR(Unsafe_Unpark)},
{CC "getLoadAverage", CC "([DI)I", FN_PTR(Unsafe_Loadavg)},
{CC "copyMemory", CC "(" OBJ "J" OBJ "JJ)V", FN_PTR(Unsafe_CopyMemory)},
{CC "setMemory", CC "(" OBJ "JJB)V", FN_PTR(Unsafe_SetMemory)},
{CC "defineAnonymousClass", CC "(" DAC_Args ")" CLS, FN_PTR(Unsafe_DefineAnonymousClass)},
{CC "shouldBeInitialized",CC "(" CLS ")Z", FN_PTR(Unsafe_ShouldBeInitialized)},
{CC "loadFence", CC "()V", FN_PTR(Unsafe_LoadFence)},
{CC "storeFence", CC "()V", FN_PTR(Unsafe_StoreFence)},
{CC "fullFence", CC "()V", FN_PTR(Unsafe_FullFence)},
};
static JNINativeMethod jdk_internal_misc_Unsafe_methods[] = {
{CC "getObject", CC "(" OBJ "J)" OBJ "", FN_PTR(Unsafe_GetObject)},
{CC "putObject", CC "(" OBJ "J" OBJ ")V", FN_PTR(Unsafe_SetObject)},
{CC "getObjectVolatile",CC "(" OBJ "J)" OBJ "", FN_PTR(Unsafe_GetObjectVolatile)},
@ -1316,17 +1384,27 @@ static JNINativeMethod methods[] = {
#undef DECLARE_GETPUTNATIVE
// This one function is exported, used by NativeLookup.
// These two functions are exported, used by NativeLookup.
// The Unsafe_xxx functions above are called only from the interpreter.
// The optimizer looks at names and signatures to recognize
// individual functions.
JVM_ENTRY(void, JVM_RegisterUnsafeMethods(JNIEnv *env, jclass unsafeclass))
UnsafeWrapper("JVM_RegisterUnsafeMethods");
JVM_ENTRY(void, JVM_RegisterSunMiscUnsafeMethods(JNIEnv *env, jclass unsafeclass))
UnsafeWrapper("JVM_RegisterSunMiscUnsafeMethods");
{
ThreadToNativeFromVM ttnfv(thread);
int ok = env->RegisterNatives(unsafeclass, methods, sizeof(methods)/sizeof(JNINativeMethod));
guarantee(ok == 0, "register unsafe natives");
int ok = env->RegisterNatives(unsafeclass, sun_misc_Unsafe_methods, sizeof(sun_misc_Unsafe_methods)/sizeof(JNINativeMethod));
guarantee(ok == 0, "register sun.misc.Unsafe natives");
}
JVM_END
JVM_ENTRY(void, JVM_RegisterJDKInternalMiscUnsafeMethods(JNIEnv *env, jclass unsafeclass))
UnsafeWrapper("JVM_RegisterJDKInternalMiscUnsafeMethods");
{
ThreadToNativeFromVM ttnfv(thread);
int ok = env->RegisterNatives(unsafeclass, jdk_internal_misc_Unsafe_methods, sizeof(jdk_internal_misc_Unsafe_methods)/sizeof(JNINativeMethod));
guarantee(ok == 0, "register jdk.internal.misc.Unsafe natives");
}
JVM_END

135
hotspot/test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestBoolean.java Normal file
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@ -0,0 +1,135 @@
/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for boolean
* @modules java.base/jdk.internal.misc
* @run testng/othervm -Diters=100 -Xint JdkInternalMiscUnsafeAccessTestBoolean
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 JdkInternalMiscUnsafeAccessTestBoolean
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation JdkInternalMiscUnsafeAccessTestBoolean
* @run testng/othervm -Diters=20000 JdkInternalMiscUnsafeAccessTestBoolean
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class JdkInternalMiscUnsafeAccessTestBoolean {
static final int ITERS = Integer.getInteger("iters", 1);
static final jdk.internal.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 = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
UNSAFE = (jdk.internal.misc.Unsafe) f.get(null);
} catch (Exception e) {
throw new RuntimeException("Unable to get Unsafe instance.", e);
}
try {
Field staticVField = JdkInternalMiscUnsafeAccessTestBoolean.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 = JdkInternalMiscUnsafeAccessTestBoolean.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(boolean[].class);
int ascale = UNSAFE.arrayIndexScale(boolean[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static boolean static_v;
boolean v;
@Test
public void testFieldInstance() {
JdkInternalMiscUnsafeAccessTestBoolean t = new JdkInternalMiscUnsafeAccessTestBoolean();
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() {
boolean[] array = new boolean[10];
for (int c = 0; c < ITERS; c++) {
for (int i = 0; i < array.length; i++) {
testAccess(array, (((long) i) << ARRAY_SHIFT) + ARRAY_OFFSET);
}
}
}
static void testAccess(Object base, long offset) {
// Plain
{
UNSAFE.putBoolean(base, offset, true);
boolean x = UNSAFE.getBoolean(base, offset);
assertEquals(x, true, "set boolean value");
}
// Volatile
{
UNSAFE.putBooleanVolatile(base, offset, false);
boolean x = UNSAFE.getBooleanVolatile(base, offset);
assertEquals(x, false, "putVolatile boolean value");
}
}
}

172
hotspot/test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestByte.java Normal file
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@ -0,0 +1,172 @@
/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for byte
* @modules java.base/jdk.internal.misc
* @run testng/othervm -Diters=100 -Xint JdkInternalMiscUnsafeAccessTestByte
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 JdkInternalMiscUnsafeAccessTestByte
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation JdkInternalMiscUnsafeAccessTestByte
* @run testng/othervm -Diters=20000 JdkInternalMiscUnsafeAccessTestByte
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class JdkInternalMiscUnsafeAccessTestByte {
static final int ITERS = Integer.getInteger("iters", 1);
static final jdk.internal.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 = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
UNSAFE = (jdk.internal.misc.Unsafe) f.get(null);
} catch (Exception e) {
throw new RuntimeException("Unable to get Unsafe instance.", e);
}
try {
Field staticVField = JdkInternalMiscUnsafeAccessTestByte.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 = JdkInternalMiscUnsafeAccessTestByte.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(byte[].class);
int ascale = UNSAFE.arrayIndexScale(byte[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static byte static_v;
byte v;
@Test
public void testFieldInstance() {
JdkInternalMiscUnsafeAccessTestByte t = new JdkInternalMiscUnsafeAccessTestByte();
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() {
byte[] array = new byte[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.putByte(base, offset, (byte)1);
byte x = UNSAFE.getByte(base, offset);
assertEquals(x, (byte)1, "set byte value");
}
// Volatile
{
UNSAFE.putByteVolatile(base, offset, (byte)2);
byte x = UNSAFE.getByteVolatile(base, offset);
assertEquals(x, (byte)2, "putVolatile byte value");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putByte(address, (byte)1);
byte x = UNSAFE.getByte(address);
assertEquals(x, (byte)1, "set byte value");
}
}
}

190
hotspot/test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestChar.java Normal file
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@ -0,0 +1,190 @@
/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for char
* @modules java.base/jdk.internal.misc
* @run testng/othervm -Diters=100 -Xint JdkInternalMiscUnsafeAccessTestChar
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 JdkInternalMiscUnsafeAccessTestChar
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation JdkInternalMiscUnsafeAccessTestChar
* @run testng/othervm -Diters=20000 JdkInternalMiscUnsafeAccessTestChar
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class JdkInternalMiscUnsafeAccessTestChar {
static final int ITERS = Integer.getInteger("iters", 1);
static final jdk.internal.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 = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
UNSAFE = (jdk.internal.misc.Unsafe) f.get(null);
} catch (Exception e) {
throw new RuntimeException("Unable to get Unsafe instance.", e);
}
try {
Field staticVField = JdkInternalMiscUnsafeAccessTestChar.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 = JdkInternalMiscUnsafeAccessTestChar.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(char[].class);
int ascale = UNSAFE.arrayIndexScale(char[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static char static_v;
char v;
@Test
public void testFieldInstance() {
JdkInternalMiscUnsafeAccessTestChar t = new JdkInternalMiscUnsafeAccessTestChar();
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() {
char[] array = new char[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.putChar(base, offset, 'a');
char x = UNSAFE.getChar(base, offset);
assertEquals(x, 'a', "set char value");
}
// Volatile
{
UNSAFE.putCharVolatile(base, offset, 'b');
char x = UNSAFE.getCharVolatile(base, offset);
assertEquals(x, 'b', "putVolatile char value");
}
// Unaligned
{
UNSAFE.putCharUnaligned(base, offset, 'b');
char x = UNSAFE.getCharUnaligned(base, offset);
assertEquals(x, 'b', "putUnaligned char value");
}
{
UNSAFE.putCharUnaligned(base, offset, 'a', true);
char x = UNSAFE.getCharUnaligned(base, offset, true);
assertEquals(x, 'a', "putUnaligned big endian char value");
}
{
UNSAFE.putCharUnaligned(base, offset, 'b', false);
char x = UNSAFE.getCharUnaligned(base, offset, false);
assertEquals(x, 'b', "putUnaligned little endian char value");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putChar(address, 'a');
char x = UNSAFE.getChar(address);
assertEquals(x, 'a', "set char value");
}
}
}

172
hotspot/test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestDouble.java Normal file
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@ -0,0 +1,172 @@
/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for double
* @modules java.base/jdk.internal.misc
* @run testng/othervm -Diters=100 -Xint JdkInternalMiscUnsafeAccessTestDouble
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 JdkInternalMiscUnsafeAccessTestDouble
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation JdkInternalMiscUnsafeAccessTestDouble
* @run testng/othervm -Diters=20000 JdkInternalMiscUnsafeAccessTestDouble
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class JdkInternalMiscUnsafeAccessTestDouble {
static final int ITERS = Integer.getInteger("iters", 1);
static final jdk.internal.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 = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
UNSAFE = (jdk.internal.misc.Unsafe) f.get(null);
} catch (Exception e) {
throw new RuntimeException("Unable to get Unsafe instance.", e);
}
try {
Field staticVField = JdkInternalMiscUnsafeAccessTestDouble.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 = JdkInternalMiscUnsafeAccessTestDouble.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(double[].class);
int ascale = UNSAFE.arrayIndexScale(double[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static double static_v;
double v;
@Test
public void testFieldInstance() {
JdkInternalMiscUnsafeAccessTestDouble t = new JdkInternalMiscUnsafeAccessTestDouble();
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() {
double[] array = new double[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.putDouble(base, offset, 1.0d);
double x = UNSAFE.getDouble(base, offset);
assertEquals(x, 1.0d, "set double value");
}
// Volatile
{
UNSAFE.putDoubleVolatile(base, offset, 2.0d);
double x = UNSAFE.getDoubleVolatile(base, offset);
assertEquals(x, 2.0d, "putVolatile double value");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putDouble(address, 1.0d);
double x = UNSAFE.getDouble(address);
assertEquals(x, 1.0d, "set double value");
}
}
}

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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for float
* @modules java.base/jdk.internal.misc
* @run testng/othervm -Diters=100 -Xint JdkInternalMiscUnsafeAccessTestFloat
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 JdkInternalMiscUnsafeAccessTestFloat
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation JdkInternalMiscUnsafeAccessTestFloat
* @run testng/othervm -Diters=20000 JdkInternalMiscUnsafeAccessTestFloat
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class JdkInternalMiscUnsafeAccessTestFloat {
static final int ITERS = Integer.getInteger("iters", 1);
static final jdk.internal.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 = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
UNSAFE = (jdk.internal.misc.Unsafe) f.get(null);
} catch (Exception e) {
throw new RuntimeException("Unable to get Unsafe instance.", e);
}
try {
Field staticVField = JdkInternalMiscUnsafeAccessTestFloat.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 = JdkInternalMiscUnsafeAccessTestFloat.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(float[].class);
int ascale = UNSAFE.arrayIndexScale(float[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static float static_v;
float v;
@Test
public void testFieldInstance() {
JdkInternalMiscUnsafeAccessTestFloat t = new JdkInternalMiscUnsafeAccessTestFloat();
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() {
float[] array = new float[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.putFloat(base, offset, 1.0f);
float x = UNSAFE.getFloat(base, offset);
assertEquals(x, 1.0f, "set float value");
}
// Volatile
{
UNSAFE.putFloatVolatile(base, offset, 2.0f);
float x = UNSAFE.getFloatVolatile(base, offset);
assertEquals(x, 2.0f, "putVolatile float value");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putFloat(address, 1.0f);
float x = UNSAFE.getFloat(address);
assertEquals(x, 1.0f, "set float value");
}
}
}

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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for int
* @modules java.base/jdk.internal.misc
* @run testng/othervm -Diters=100 -Xint JdkInternalMiscUnsafeAccessTestInt
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 JdkInternalMiscUnsafeAccessTestInt
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation JdkInternalMiscUnsafeAccessTestInt
* @run testng/othervm -Diters=20000 JdkInternalMiscUnsafeAccessTestInt
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class JdkInternalMiscUnsafeAccessTestInt {
static final int ITERS = Integer.getInteger("iters", 1);
static final jdk.internal.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 = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
UNSAFE = (jdk.internal.misc.Unsafe) f.get(null);
} catch (Exception e) {
throw new RuntimeException("Unable to get Unsafe instance.", e);
}
try {
Field staticVField = JdkInternalMiscUnsafeAccessTestInt.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 = JdkInternalMiscUnsafeAccessTestInt.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() {
JdkInternalMiscUnsafeAccessTestInt t = new JdkInternalMiscUnsafeAccessTestInt();
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, 1);
int x = UNSAFE.getInt(base, offset);
assertEquals(x, 1, "set int value");
}
// Volatile
{
UNSAFE.putIntVolatile(base, offset, 2);
int x = UNSAFE.getIntVolatile(base, offset);
assertEquals(x, 2, "putVolatile int value");
}
// Lazy
{
UNSAFE.putOrderedInt(base, offset, 1);
int x = UNSAFE.getIntVolatile(base, offset);
assertEquals(x, 1, "putRelease int value");
}
// Unaligned
{
UNSAFE.putIntUnaligned(base, offset, 2);
int x = UNSAFE.getIntUnaligned(base, offset);
assertEquals(x, 2, "putUnaligned int value");
}
{
UNSAFE.putIntUnaligned(base, offset, 1, true);
int x = UNSAFE.getIntUnaligned(base, offset, true);
assertEquals(x, 1, "putUnaligned big endian int value");
}
{
UNSAFE.putIntUnaligned(base, offset, 2, false);
int x = UNSAFE.getIntUnaligned(base, offset, false);
assertEquals(x, 2, "putUnaligned little endian int value");
}
UNSAFE.putInt(base, offset, 1);
// Compare
{
boolean r = UNSAFE.compareAndSwapInt(base, offset, 1, 2);
assertEquals(r, true, "success compareAndSwap int");
int x = UNSAFE.getInt(base, offset);
assertEquals(x, 2, "success compareAndSwap int value");
}
{
boolean r = UNSAFE.compareAndSwapInt(base, offset, 1, 3);
assertEquals(r, false, "failing compareAndSwap int");
int x = UNSAFE.getInt(base, offset);
assertEquals(x, 2, "failing compareAndSwap int value");
}
// Compare set and get
{
int o = UNSAFE.getAndSetInt(base, offset, 1);
assertEquals(o, 2, "getAndSet int");
int x = UNSAFE.getInt(base, offset);
assertEquals(x, 1, "getAndSet int value");
}
UNSAFE.putInt(base, offset, 1);
// get and add, add and get
{
int o = UNSAFE.getAndAddInt(base, offset, 2);
assertEquals(o, 1, "getAndAdd int");
int x = UNSAFE.getInt(base, offset);
assertEquals(x, 1 + 2, "weakCompareAndSwapRelease int");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putInt(address, 1);
int x = UNSAFE.getInt(address);
assertEquals(x, 1, "set int value");
}
}
}

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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for long
* @modules java.base/jdk.internal.misc
* @run testng/othervm -Diters=100 -Xint JdkInternalMiscUnsafeAccessTestLong
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 JdkInternalMiscUnsafeAccessTestLong
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation JdkInternalMiscUnsafeAccessTestLong
* @run testng/othervm -Diters=20000 JdkInternalMiscUnsafeAccessTestLong
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class JdkInternalMiscUnsafeAccessTestLong {
static final int ITERS = Integer.getInteger("iters", 1);
static final jdk.internal.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 = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
UNSAFE = (jdk.internal.misc.Unsafe) f.get(null);
} catch (Exception e) {
throw new RuntimeException("Unable to get Unsafe instance.", e);
}
try {
Field staticVField = JdkInternalMiscUnsafeAccessTestLong.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 = JdkInternalMiscUnsafeAccessTestLong.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(long[].class);
int ascale = UNSAFE.arrayIndexScale(long[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static long static_v;
long v;
@Test
public void testFieldInstance() {
JdkInternalMiscUnsafeAccessTestLong t = new JdkInternalMiscUnsafeAccessTestLong();
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() {
long[] array = new long[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.putLong(base, offset, 1L);
long x = UNSAFE.getLong(base, offset);
assertEquals(x, 1L, "set long value");
}
// Volatile
{
UNSAFE.putLongVolatile(base, offset, 2L);
long x = UNSAFE.getLongVolatile(base, offset);
assertEquals(x, 2L, "putVolatile long value");
}
// Lazy
{
UNSAFE.putOrderedLong(base, offset, 1L);
long x = UNSAFE.getLongVolatile(base, offset);
assertEquals(x, 1L, "putRelease long value");
}
// Unaligned
{
UNSAFE.putLongUnaligned(base, offset, 2L);
long x = UNSAFE.getLongUnaligned(base, offset);
assertEquals(x, 2L, "putUnaligned long value");
}
{
UNSAFE.putLongUnaligned(base, offset, 1L, true);
long x = UNSAFE.getLongUnaligned(base, offset, true);
assertEquals(x, 1L, "putUnaligned big endian long value");
}
{
UNSAFE.putLongUnaligned(base, offset, 2L, false);
long x = UNSAFE.getLongUnaligned(base, offset, false);
assertEquals(x, 2L, "putUnaligned little endian long value");
}
UNSAFE.putLong(base, offset, 1L);
// Compare
{
boolean r = UNSAFE.compareAndSwapLong(base, offset, 1L, 2L);
assertEquals(r, true, "success compareAndSwap long");
long x = UNSAFE.getLong(base, offset);
assertEquals(x, 2L, "success compareAndSwap long value");
}
{
boolean r = UNSAFE.compareAndSwapLong(base, offset, 1L, 3L);
assertEquals(r, false, "failing compareAndSwap long");
long x = UNSAFE.getLong(base, offset);
assertEquals(x, 2L, "failing compareAndSwap long value");
}
// Compare set and get
{
long o = UNSAFE.getAndSetLong(base, offset, 1L);
assertEquals(o, 2L, "getAndSet long");
long x = UNSAFE.getLong(base, offset);
assertEquals(x, 1L, "getAndSet long value");
}
UNSAFE.putLong(base, offset, 1L);
// get and add, add and get
{
long o = UNSAFE.getAndAddLong(base, offset, 2L);
assertEquals(o, 1L, "getAndAdd long");
long x = UNSAFE.getLong(base, offset);
assertEquals(x, 1L + 2L, "weakCompareAndSwapRelease long");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putLong(address, 1L);
long x = UNSAFE.getLong(address);
assertEquals(x, 1L, "set long value");
}
}
}

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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for Object
* @modules java.base/jdk.internal.misc
* @run testng/othervm -Diters=100 -Xint JdkInternalMiscUnsafeAccessTestObject
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 JdkInternalMiscUnsafeAccessTestObject
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation JdkInternalMiscUnsafeAccessTestObject
* @run testng/othervm -Diters=20000 JdkInternalMiscUnsafeAccessTestObject
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class JdkInternalMiscUnsafeAccessTestObject {
static final int ITERS = Integer.getInteger("iters", 1);
static final jdk.internal.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 = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
UNSAFE = (jdk.internal.misc.Unsafe) f.get(null);
} catch (Exception e) {
throw new RuntimeException("Unable to get Unsafe instance.", e);
}
try {
Field staticVField = JdkInternalMiscUnsafeAccessTestObject.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 = JdkInternalMiscUnsafeAccessTestObject.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(Object[].class);
int ascale = UNSAFE.arrayIndexScale(Object[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static Object static_v;
Object v;
@Test
public void testFieldInstance() {
JdkInternalMiscUnsafeAccessTestObject t = new JdkInternalMiscUnsafeAccessTestObject();
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() {
Object[] array = new Object[10];
for (int c = 0; c < ITERS; c++) {
for (int i = 0; i < array.length; i++) {
testAccess(array, (((long) i) << ARRAY_SHIFT) + ARRAY_OFFSET);
}
}
}
static void testAccess(Object base, long offset) {
// Plain
{
UNSAFE.putObject(base, offset, "foo");
Object x = UNSAFE.getObject(base, offset);
assertEquals(x, "foo", "set Object value");
}
// Volatile
{
UNSAFE.putObjectVolatile(base, offset, "bar");
Object x = UNSAFE.getObjectVolatile(base, offset);
assertEquals(x, "bar", "putVolatile Object value");
}
// Lazy
{
UNSAFE.putOrderedObject(base, offset, "foo");
Object x = UNSAFE.getObjectVolatile(base, offset);
assertEquals(x, "foo", "putRelease Object value");
}
UNSAFE.putObject(base, offset, "foo");
// Compare
{
boolean r = UNSAFE.compareAndSwapObject(base, offset, "foo", "bar");
assertEquals(r, true, "success compareAndSwap Object");
Object x = UNSAFE.getObject(base, offset);
assertEquals(x, "bar", "success compareAndSwap Object value");
}
{
boolean r = UNSAFE.compareAndSwapObject(base, offset, "foo", "baz");
assertEquals(r, false, "failing compareAndSwap Object");
Object x = UNSAFE.getObject(base, offset);
assertEquals(x, "bar", "failing compareAndSwap Object value");
}
// Compare set and get
{
Object o = UNSAFE.getAndSetObject(base, offset, "foo");
assertEquals(o, "bar", "getAndSet Object");
Object x = UNSAFE.getObject(base, offset);
assertEquals(x, "foo", "getAndSet Object value");
}
}
}

190
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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for short
* @modules java.base/jdk.internal.misc
* @run testng/othervm -Diters=100 -Xint JdkInternalMiscUnsafeAccessTestShort
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 JdkInternalMiscUnsafeAccessTestShort
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation JdkInternalMiscUnsafeAccessTestShort
* @run testng/othervm -Diters=20000 JdkInternalMiscUnsafeAccessTestShort
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class JdkInternalMiscUnsafeAccessTestShort {
static final int ITERS = Integer.getInteger("iters", 1);
static final jdk.internal.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 = jdk.internal.misc.Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
UNSAFE = (jdk.internal.misc.Unsafe) f.get(null);
} catch (Exception e) {
throw new RuntimeException("Unable to get Unsafe instance.", e);
}
try {
Field staticVField = JdkInternalMiscUnsafeAccessTestShort.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 = JdkInternalMiscUnsafeAccessTestShort.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(short[].class);
int ascale = UNSAFE.arrayIndexScale(short[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static short static_v;
short v;
@Test
public void testFieldInstance() {
JdkInternalMiscUnsafeAccessTestShort t = new JdkInternalMiscUnsafeAccessTestShort();
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() {
short[] array = new short[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.putShort(base, offset, (short)1);
short x = UNSAFE.getShort(base, offset);
assertEquals(x, (short)1, "set short value");
}
// Volatile
{
UNSAFE.putShortVolatile(base, offset, (short)2);
short x = UNSAFE.getShortVolatile(base, offset);
assertEquals(x, (short)2, "putVolatile short value");
}
// Unaligned
{
UNSAFE.putShortUnaligned(base, offset, (short)2);
short x = UNSAFE.getShortUnaligned(base, offset);
assertEquals(x, (short)2, "putUnaligned short value");
}
{
UNSAFE.putShortUnaligned(base, offset, (short)1, true);
short x = UNSAFE.getShortUnaligned(base, offset, true);
assertEquals(x, (short)1, "putUnaligned big endian short value");
}
{
UNSAFE.putShortUnaligned(base, offset, (short)2, false);
short x = UNSAFE.getShortUnaligned(base, offset, false);
assertEquals(x, (short)2, "putUnaligned little endian short value");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putShort(address, (short)1);
short x = UNSAFE.getShort(address);
assertEquals(x, (short)1, "set short value");
}
}
}

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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for boolean
* @modules java.base/sun.misc
* @run testng/othervm -Diters=100 -Xint SunMiscUnsafeAccessTestBoolean
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 SunMiscUnsafeAccessTestBoolean
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation SunMiscUnsafeAccessTestBoolean
* @run testng/othervm -Diters=20000 SunMiscUnsafeAccessTestBoolean
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class SunMiscUnsafeAccessTestBoolean {
static final int ITERS = Integer.getInteger("iters", 1);
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 = SunMiscUnsafeAccessTestBoolean.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 = SunMiscUnsafeAccessTestBoolean.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(boolean[].class);
int ascale = UNSAFE.arrayIndexScale(boolean[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static boolean static_v;
boolean v;
@Test
public void testFieldInstance() {
SunMiscUnsafeAccessTestBoolean t = new SunMiscUnsafeAccessTestBoolean();
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() {
boolean[] array = new boolean[10];
for (int c = 0; c < ITERS; c++) {
for (int i = 0; i < array.length; i++) {
testAccess(array, (((long) i) << ARRAY_SHIFT) + ARRAY_OFFSET);
}
}
}
static void testAccess(Object base, long offset) {
// Plain
{
UNSAFE.putBoolean(base, offset, true);
boolean x = UNSAFE.getBoolean(base, offset);
assertEquals(x, true, "set boolean value");
}
// Volatile
{
UNSAFE.putBooleanVolatile(base, offset, false);
boolean x = UNSAFE.getBooleanVolatile(base, offset);
assertEquals(x, false, "putVolatile boolean value");
}
}
}

172
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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for byte
* @modules java.base/sun.misc
* @run testng/othervm -Diters=100 -Xint SunMiscUnsafeAccessTestByte
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 SunMiscUnsafeAccessTestByte
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation SunMiscUnsafeAccessTestByte
* @run testng/othervm -Diters=20000 SunMiscUnsafeAccessTestByte
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class SunMiscUnsafeAccessTestByte {
static final int ITERS = Integer.getInteger("iters", 1);
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 = SunMiscUnsafeAccessTestByte.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 = SunMiscUnsafeAccessTestByte.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(byte[].class);
int ascale = UNSAFE.arrayIndexScale(byte[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static byte static_v;
byte v;
@Test
public void testFieldInstance() {
SunMiscUnsafeAccessTestByte t = new SunMiscUnsafeAccessTestByte();
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() {
byte[] array = new byte[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.putByte(base, offset, (byte)1);
byte x = UNSAFE.getByte(base, offset);
assertEquals(x, (byte)1, "set byte value");
}
// Volatile
{
UNSAFE.putByteVolatile(base, offset, (byte)2);
byte x = UNSAFE.getByteVolatile(base, offset);
assertEquals(x, (byte)2, "putVolatile byte value");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putByte(address, (byte)1);
byte x = UNSAFE.getByte(address);
assertEquals(x, (byte)1, "set byte value");
}
}
}

172
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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for char
* @modules java.base/sun.misc
* @run testng/othervm -Diters=100 -Xint SunMiscUnsafeAccessTestChar
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 SunMiscUnsafeAccessTestChar
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation SunMiscUnsafeAccessTestChar
* @run testng/othervm -Diters=20000 SunMiscUnsafeAccessTestChar
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class SunMiscUnsafeAccessTestChar {
static final int ITERS = Integer.getInteger("iters", 1);
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 = SunMiscUnsafeAccessTestChar.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 = SunMiscUnsafeAccessTestChar.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(char[].class);
int ascale = UNSAFE.arrayIndexScale(char[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static char static_v;
char v;
@Test
public void testFieldInstance() {
SunMiscUnsafeAccessTestChar t = new SunMiscUnsafeAccessTestChar();
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() {
char[] array = new char[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.putChar(base, offset, 'a');
char x = UNSAFE.getChar(base, offset);
assertEquals(x, 'a', "set char value");
}
// Volatile
{
UNSAFE.putCharVolatile(base, offset, 'b');
char x = UNSAFE.getCharVolatile(base, offset);
assertEquals(x, 'b', "putVolatile char value");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putChar(address, 'a');
char x = UNSAFE.getChar(address);
assertEquals(x, 'a', "set char value");
}
}
}

172
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@ -0,0 +1,172 @@
/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for double
* @modules java.base/sun.misc
* @run testng/othervm -Diters=100 -Xint SunMiscUnsafeAccessTestDouble
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 SunMiscUnsafeAccessTestDouble
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation SunMiscUnsafeAccessTestDouble
* @run testng/othervm -Diters=20000 SunMiscUnsafeAccessTestDouble
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class SunMiscUnsafeAccessTestDouble {
static final int ITERS = Integer.getInteger("iters", 1);
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 = SunMiscUnsafeAccessTestDouble.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 = SunMiscUnsafeAccessTestDouble.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(double[].class);
int ascale = UNSAFE.arrayIndexScale(double[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static double static_v;
double v;
@Test
public void testFieldInstance() {
SunMiscUnsafeAccessTestDouble t = new SunMiscUnsafeAccessTestDouble();
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() {
double[] array = new double[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.putDouble(base, offset, 1.0d);
double x = UNSAFE.getDouble(base, offset);
assertEquals(x, 1.0d, "set double value");
}
// Volatile
{
UNSAFE.putDoubleVolatile(base, offset, 2.0d);
double x = UNSAFE.getDoubleVolatile(base, offset);
assertEquals(x, 2.0d, "putVolatile double value");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putDouble(address, 1.0d);
double x = UNSAFE.getDouble(address);
assertEquals(x, 1.0d, "set double value");
}
}
}

172
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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for float
* @modules java.base/sun.misc
* @run testng/othervm -Diters=100 -Xint SunMiscUnsafeAccessTestFloat
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 SunMiscUnsafeAccessTestFloat
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation SunMiscUnsafeAccessTestFloat
* @run testng/othervm -Diters=20000 SunMiscUnsafeAccessTestFloat
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class SunMiscUnsafeAccessTestFloat {
static final int ITERS = Integer.getInteger("iters", 1);
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 = SunMiscUnsafeAccessTestFloat.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 = SunMiscUnsafeAccessTestFloat.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(float[].class);
int ascale = UNSAFE.arrayIndexScale(float[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static float static_v;
float v;
@Test
public void testFieldInstance() {
SunMiscUnsafeAccessTestFloat t = new SunMiscUnsafeAccessTestFloat();
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() {
float[] array = new float[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.putFloat(base, offset, 1.0f);
float x = UNSAFE.getFloat(base, offset);
assertEquals(x, 1.0f, "set float value");
}
// Volatile
{
UNSAFE.putFloatVolatile(base, offset, 2.0f);
float x = UNSAFE.getFloatVolatile(base, offset);
assertEquals(x, 2.0f, "putVolatile float value");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putFloat(address, 1.0f);
float x = UNSAFE.getFloat(address);
assertEquals(x, 1.0f, "set float value");
}
}
}

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@ -0,0 +1,211 @@
/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for int
* @modules java.base/sun.misc
* @run testng/othervm -Diters=100 -Xint SunMiscUnsafeAccessTestInt
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 SunMiscUnsafeAccessTestInt
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation SunMiscUnsafeAccessTestInt
* @run testng/othervm -Diters=20000 SunMiscUnsafeAccessTestInt
*/
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 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, 1);
int x = UNSAFE.getInt(base, offset);
assertEquals(x, 1, "set int value");
}
// Volatile
{
UNSAFE.putIntVolatile(base, offset, 2);
int x = UNSAFE.getIntVolatile(base, offset);
assertEquals(x, 2, "putVolatile int value");
}
// Lazy
{
UNSAFE.putOrderedInt(base, offset, 1);
int x = UNSAFE.getIntVolatile(base, offset);
assertEquals(x, 1, "putRelease int value");
}
UNSAFE.putInt(base, offset, 1);
// Compare
{
boolean r = UNSAFE.compareAndSwapInt(base, offset, 1, 2);
assertEquals(r, true, "success compareAndSwap int");
int x = UNSAFE.getInt(base, offset);
assertEquals(x, 2, "success compareAndSwap int value");
}
{
boolean r = UNSAFE.compareAndSwapInt(base, offset, 1, 3);
assertEquals(r, false, "failing compareAndSwap int");
int x = UNSAFE.getInt(base, offset);
assertEquals(x, 2, "failing compareAndSwap int value");
}
// Compare set and get
{
int o = UNSAFE.getAndSetInt(base, offset, 1);
assertEquals(o, 2, "getAndSet int");
int x = UNSAFE.getInt(base, offset);
assertEquals(x, 1, "getAndSet int value");
}
UNSAFE.putInt(base, offset, 1);
// get and add, add and get
{
int o = UNSAFE.getAndAddInt(base, offset, 2);
assertEquals(o, 1, "getAndAdd int");
int x = UNSAFE.getInt(base, offset);
assertEquals(x, 1 + 2, "weakCompareAndSwapRelease int");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putInt(address, 1);
int x = UNSAFE.getInt(address);
assertEquals(x, 1, "set int value");
}
}
}

211
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@ -0,0 +1,211 @@
/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for long
* @modules java.base/sun.misc
* @run testng/othervm -Diters=100 -Xint SunMiscUnsafeAccessTestLong
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 SunMiscUnsafeAccessTestLong
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation SunMiscUnsafeAccessTestLong
* @run testng/othervm -Diters=20000 SunMiscUnsafeAccessTestLong
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class SunMiscUnsafeAccessTestLong {
static final int ITERS = Integer.getInteger("iters", 1);
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 = SunMiscUnsafeAccessTestLong.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 = SunMiscUnsafeAccessTestLong.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(long[].class);
int ascale = UNSAFE.arrayIndexScale(long[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static long static_v;
long v;
@Test
public void testFieldInstance() {
SunMiscUnsafeAccessTestLong t = new SunMiscUnsafeAccessTestLong();
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() {
long[] array = new long[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.putLong(base, offset, 1L);
long x = UNSAFE.getLong(base, offset);
assertEquals(x, 1L, "set long value");
}
// Volatile
{
UNSAFE.putLongVolatile(base, offset, 2L);
long x = UNSAFE.getLongVolatile(base, offset);
assertEquals(x, 2L, "putVolatile long value");
}
// Lazy
{
UNSAFE.putOrderedLong(base, offset, 1L);
long x = UNSAFE.getLongVolatile(base, offset);
assertEquals(x, 1L, "putRelease long value");
}
UNSAFE.putLong(base, offset, 1L);
// Compare
{
boolean r = UNSAFE.compareAndSwapLong(base, offset, 1L, 2L);
assertEquals(r, true, "success compareAndSwap long");
long x = UNSAFE.getLong(base, offset);
assertEquals(x, 2L, "success compareAndSwap long value");
}
{
boolean r = UNSAFE.compareAndSwapLong(base, offset, 1L, 3L);
assertEquals(r, false, "failing compareAndSwap long");
long x = UNSAFE.getLong(base, offset);
assertEquals(x, 2L, "failing compareAndSwap long value");
}
// Compare set and get
{
long o = UNSAFE.getAndSetLong(base, offset, 1L);
assertEquals(o, 2L, "getAndSet long");
long x = UNSAFE.getLong(base, offset);
assertEquals(x, 1L, "getAndSet long value");
}
UNSAFE.putLong(base, offset, 1L);
// get and add, add and get
{
long o = UNSAFE.getAndAddLong(base, offset, 2L);
assertEquals(o, 1L, "getAndAdd long");
long x = UNSAFE.getLong(base, offset);
assertEquals(x, 1L + 2L, "weakCompareAndSwapRelease long");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putLong(address, 1L);
long x = UNSAFE.getLong(address);
assertEquals(x, 1L, "set long value");
}
}
}

165
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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for Object
* @modules java.base/sun.misc
* @run testng/othervm -Diters=100 -Xint SunMiscUnsafeAccessTestObject
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 SunMiscUnsafeAccessTestObject
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation SunMiscUnsafeAccessTestObject
* @run testng/othervm -Diters=20000 SunMiscUnsafeAccessTestObject
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class SunMiscUnsafeAccessTestObject {
static final int ITERS = Integer.getInteger("iters", 1);
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 = SunMiscUnsafeAccessTestObject.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 = SunMiscUnsafeAccessTestObject.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(Object[].class);
int ascale = UNSAFE.arrayIndexScale(Object[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static Object static_v;
Object v;
@Test
public void testFieldInstance() {
SunMiscUnsafeAccessTestObject t = new SunMiscUnsafeAccessTestObject();
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() {
Object[] array = new Object[10];
for (int c = 0; c < ITERS; c++) {
for (int i = 0; i < array.length; i++) {
testAccess(array, (((long) i) << ARRAY_SHIFT) + ARRAY_OFFSET);
}
}
}
static void testAccess(Object base, long offset) {
// Plain
{
UNSAFE.putObject(base, offset, "foo");
Object x = UNSAFE.getObject(base, offset);
assertEquals(x, "foo", "set Object value");
}
// Volatile
{
UNSAFE.putObjectVolatile(base, offset, "bar");
Object x = UNSAFE.getObjectVolatile(base, offset);
assertEquals(x, "bar", "putVolatile Object value");
}
// Lazy
{
UNSAFE.putOrderedObject(base, offset, "foo");
Object x = UNSAFE.getObjectVolatile(base, offset);
assertEquals(x, "foo", "putRelease Object value");
}
UNSAFE.putObject(base, offset, "foo");
// Compare
{
boolean r = UNSAFE.compareAndSwapObject(base, offset, "foo", "bar");
assertEquals(r, true, "success compareAndSwap Object");
Object x = UNSAFE.getObject(base, offset);
assertEquals(x, "bar", "success compareAndSwap Object value");
}
{
boolean r = UNSAFE.compareAndSwapObject(base, offset, "foo", "baz");
assertEquals(r, false, "failing compareAndSwap Object");
Object x = UNSAFE.getObject(base, offset);
assertEquals(x, "bar", "failing compareAndSwap Object value");
}
// Compare set and get
{
Object o = UNSAFE.getAndSetObject(base, offset, "foo");
assertEquals(o, "bar", "getAndSet Object");
Object x = UNSAFE.getObject(base, offset);
assertEquals(x, "foo", "getAndSet Object value");
}
}
}

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/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for short
* @modules java.base/sun.misc
* @run testng/othervm -Diters=100 -Xint SunMiscUnsafeAccessTestShort
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 SunMiscUnsafeAccessTestShort
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation SunMiscUnsafeAccessTestShort
* @run testng/othervm -Diters=20000 SunMiscUnsafeAccessTestShort
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class SunMiscUnsafeAccessTestShort {
static final int ITERS = Integer.getInteger("iters", 1);
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 = SunMiscUnsafeAccessTestShort.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 = SunMiscUnsafeAccessTestShort.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset(short[].class);
int ascale = UNSAFE.arrayIndexScale(short[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static short static_v;
short v;
@Test
public void testFieldInstance() {
SunMiscUnsafeAccessTestShort t = new SunMiscUnsafeAccessTestShort();
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() {
short[] array = new short[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.putShort(base, offset, (short)1);
short x = UNSAFE.getShort(base, offset);
assertEquals(x, (short)1, "set short value");
}
// Volatile
{
UNSAFE.putShortVolatile(base, offset, (short)2);
short x = UNSAFE.getShortVolatile(base, offset);
assertEquals(x, (short)2, "putVolatile short value");
}
}
static void testAccess(long address) {
// Plain
{
UNSAFE.putShort(address, (short)1);
short x = UNSAFE.getShort(address);
assertEquals(x, (short)1, "set short value");
}
}
}

247
hotspot/test/compiler/unsafe/X-UnsafeAccessTest.java.template Normal file
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@ -0,0 +1,247 @@
/*
* Copyright (c) 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.
*/
/*
* @test
* @bug 8143628
* @summary Test unsafe access for $type$
* @modules java.base/$package$
* @run testng/othervm -Diters=100 -Xint $Qualifier$UnsafeAccessTest$Type$
* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 $Qualifier$UnsafeAccessTest$Type$
* @run testng/othervm -Diters=20000 -XX:-TieredCompilation $Qualifier$UnsafeAccessTest$Type$
* @run testng/othervm -Diters=20000 $Qualifier$UnsafeAccessTest$Type$
*/
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import static org.testng.Assert.*;
public class $Qualifier$UnsafeAccessTest$Type$ {
static final int ITERS = Integer.getInteger("iters", 1);
static final $package$.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 = $package$.Unsafe.class.getDeclaredField("theUnsafe");
f.setAccessible(true);
UNSAFE = ($package$.Unsafe) f.get(null);
} catch (Exception e) {
throw new RuntimeException("Unable to get Unsafe instance.", e);
}
try {
Field staticVField = $Qualifier$UnsafeAccessTest$Type$.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 = $Qualifier$UnsafeAccessTest$Type$.class.getDeclaredField("v");
V_OFFSET = UNSAFE.objectFieldOffset(vField);
} catch (Exception e) {
throw new RuntimeException(e);
}
ARRAY_OFFSET = UNSAFE.arrayBaseOffset($type$[].class);
int ascale = UNSAFE.arrayIndexScale($type$[].class);
ARRAY_SHIFT = 31 - Integer.numberOfLeadingZeros(ascale);
}
static $type$ static_v;
$type$ v;
@Test
public void testFieldInstance() {
$Qualifier$UnsafeAccessTest$Type$ t = new $Qualifier$UnsafeAccessTest$Type$();
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() {
$type$[] array = new $type$[10];
for (int c = 0; c < ITERS; c++) {
for (int i = 0; i < array.length; i++) {
testAccess(array, (((long) i) << ARRAY_SHIFT) + ARRAY_OFFSET);
}
}
}
#if[!Object]
#if[!boolean]
@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);
}
}
#end[!boolean]
#end[!Object]
static void testAccess(Object base, long offset) {
// Plain
{
UNSAFE.put$Type$(base, offset, $value1$);
$type$ x = UNSAFE.get$Type$(base, offset);
assertEquals(x, $value1$, "set $type$ value");
}
// Volatile
{
UNSAFE.put$Type$Volatile(base, offset, $value2$);
$type$ x = UNSAFE.get$Type$Volatile(base, offset);
assertEquals(x, $value2$, "putVolatile $type$ value");
}
#if[Ordered]
// Lazy
{
UNSAFE.putOrdered$Type$(base, offset, $value1$);
$type$ x = UNSAFE.get$Type$Volatile(base, offset);
assertEquals(x, $value1$, "putRelease $type$ value");
}
#end[Ordered]
#if[JdkInternalMisc]
#if[Unaligned]
// Unaligned
{
UNSAFE.put$Type$Unaligned(base, offset, $value2$);
$type$ x = UNSAFE.get$Type$Unaligned(base, offset);
assertEquals(x, $value2$, "putUnaligned $type$ value");
}
{
UNSAFE.put$Type$Unaligned(base, offset, $value1$, true);
$type$ x = UNSAFE.get$Type$Unaligned(base, offset, true);
assertEquals(x, $value1$, "putUnaligned big endian $type$ value");
}
{
UNSAFE.put$Type$Unaligned(base, offset, $value2$, false);
$type$ x = UNSAFE.get$Type$Unaligned(base, offset, false);
assertEquals(x, $value2$, "putUnaligned little endian $type$ value");
}
#end[Unaligned]
#end[JdkInternalMisc]
#if[CAS]
UNSAFE.put$Type$(base, offset, $value1$);
// Compare
{
boolean r = UNSAFE.compareAndSwap$Type$(base, offset, $value1$, $value2$);
assertEquals(r, true, "success compareAndSwap $type$");
$type$ x = UNSAFE.get$Type$(base, offset);
assertEquals(x, $value2$, "success compareAndSwap $type$ value");
}
{
boolean r = UNSAFE.compareAndSwap$Type$(base, offset, $value1$, $value3$);
assertEquals(r, false, "failing compareAndSwap $type$");
$type$ x = UNSAFE.get$Type$(base, offset);
assertEquals(x, $value2$, "failing compareAndSwap $type$ value");
}
// Compare set and get
{
$type$ o = UNSAFE.getAndSet$Type$(base, offset, $value1$);
assertEquals(o, $value2$, "getAndSet $type$");
$type$ x = UNSAFE.get$Type$(base, offset);
assertEquals(x, $value1$, "getAndSet $type$ value");
}
#end[CAS]
#if[AtomicAdd]
UNSAFE.put$Type$(base, offset, $value1$);
// get and add, add and get
{
$type$ o = UNSAFE.getAndAdd$Type$(base, offset, $value2$);
assertEquals(o, $value1$, "getAndAdd $type$");
$type$ x = UNSAFE.get$Type$(base, offset);
assertEquals(x, $value1$ + $value2$, "weakCompareAndSwapRelease $type$");
}
#end[AtomicAdd]
}
#if[!Object]
#if[!boolean]
static void testAccess(long address) {
// Plain
{
UNSAFE.put$Type$(address, $value1$);
$type$ x = UNSAFE.get$Type$(address);
assertEquals(x, $value1$, "set $type$ value");
}
}
#end[!boolean]
#end[!Object]
}

119
hotspot/test/compiler/unsafe/generate-unsafe-access-tests.sh Normal file
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@ -0,0 +1,119 @@
#!/bin/bash
#
# Copyright (c) 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.
#
javac -d . ../../../../jdk/make/src/classes/build/tools/spp/Spp.java
SPP=build.tools.spp.Spp
# Generates unsafe access tests for objects and all primitive types
# $1 = package name to Unsafe, sun.misc | jdk.internal.misc
# $2 = test class qualifier name, SunMisc | JdkInternalMisc
function generate {
package=$1
Qualifier=$2
for type in boolean byte short char int long float double Object
do
Type="$(tr '[:lower:]' '[:upper:]' <<< ${type:0:1})${type:1}"
args="-K$type -Dtype=$type -DType=$Type"
case $type in
Object|int|long)
args="$args -KCAS -KOrdered"
;;
esac
case $type in
int|long)
args="$args -KAtomicAdd"
;;
esac
case $type in
short|char|int|long)
args="$args -KUnaligned"
;;
esac
case $type in
boolean)
value1=true
value2=false
value3=false
;;
byte)
value1=(byte)1
value2=(byte)2
value3=(byte)3
;;
short)
value1=(short)1
value2=(short)2
value3=(short)3
;;
char)
value1=\'a\'
value2=\'b\'
value3=\'c\'
;;
int)
value1=1
value2=2
value3=3
;;
long)
value1=1L
value2=2L
value3=3L
;;
float)
value1=1.0f
value2=2.0f
value3=3.0f
;;
double)
value1=1.0d
value2=2.0d
value3=3.0d
;;
Object)
value1=\"foo\"
value2=\"bar\"
value3=\"baz\"
;;
esac
args="$args -Dvalue1=$value1 -Dvalue2=$value2 -Dvalue3=$value3"
echo $args
java $SPP -nel -K$Qualifier -Dpackage=$package -DQualifier=$Qualifier \
$args < X-UnsafeAccessTest.java.template > ${Qualifier}UnsafeAccessTest${Type}.java
done
}
generate sun.misc SunMisc
generate jdk.internal.misc JdkInternalMisc
rm -fr build