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/*
* Copyright (c) 2016, 2021, 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 8150465 8259339
* @summary Unsafe methods to produce uninitialized arrays
* @modules java.base/jdk.internal.misc:+open
*
* @run main/othervm -ea -Diters=200 -Xint
* compiler.intrinsics.unsafe.AllocateUninitializedArray
* @run main/othervm -ea -Diters=30000 -XX:TieredStopAtLevel=1
* compiler.intrinsics.unsafe.AllocateUninitializedArray
* @run main/othervm -ea -Diters=30000 -XX:TieredStopAtLevel=4
* compiler.intrinsics.unsafe.AllocateUninitializedArray
*/
package compiler.intrinsics.unsafe;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.util.concurrent.Callable;
public class AllocateUninitializedArray {
static final int ITERS = Integer.getInteger("iters", 1);
static final jdk.internal.misc.Unsafe UNSAFE;
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);
}
}
public static void main(String... args) throws Exception {
testIAE(AllConstants::testObject);
testIAE(LengthIsConstant::testObject);
testIAE(ClassIsConstant::testObject);
testIAE(NothingIsConstant::testObject);
testIAE(AllConstants::testArray);
testIAE(LengthIsConstant::testArray);
testIAE(ClassIsConstant::testArray);
testIAE(NothingIsConstant::testArray);
testIAE(AllConstants::testNull);
testIAE(LengthIsConstant::testNull);
testIAE(ClassIsConstant::testNull);
testIAE(NothingIsConstant::testNull);
testOK(boolean[].class, 10, AllConstants::testBoolean);
testOK(byte[].class, 10, AllConstants::testByte);
testOK(short[].class, 10, AllConstants::testShort);
testOK(char[].class, 10, AllConstants::testChar);
testOK(int[].class, 10, AllConstants::testInt);
testOK(float[].class, 10, AllConstants::testFloat);
testOK(long[].class, 10, AllConstants::testLong);
testOK(double[].class, 10, AllConstants::testDouble);
testOK(null, 10, AllConstants::testVoid);
testOK(boolean[].class, 10, LengthIsConstant::testBoolean);
testOK(byte[].class, 10, LengthIsConstant::testByte);
testOK(short[].class, 10, LengthIsConstant::testShort);
testOK(char[].class, 10, LengthIsConstant::testChar);
testOK(int[].class, 10, LengthIsConstant::testInt);
testOK(float[].class, 10, LengthIsConstant::testFloat);
testOK(long[].class, 10, LengthIsConstant::testLong);
testOK(double[].class, 10, LengthIsConstant::testDouble);
testOK(null, 10, LengthIsConstant::testVoid);
testOK(boolean[].class, 10, ClassIsConstant::testBoolean);
testOK(byte[].class, 10, ClassIsConstant::testByte);
testOK(short[].class, 10, ClassIsConstant::testShort);
testOK(char[].class, 10, ClassIsConstant::testChar);
testOK(int[].class, 10, ClassIsConstant::testInt);
testOK(float[].class, 10, ClassIsConstant::testFloat);
testOK(long[].class, 10, ClassIsConstant::testLong);
testOK(double[].class, 10, ClassIsConstant::testDouble);
testOK(null, 10, ClassIsConstant::testVoid);
testOK(boolean[].class, 10, NothingIsConstant::testBoolean);
testOK(byte[].class, 10, NothingIsConstant::testByte);
testOK(short[].class, 10, NothingIsConstant::testShort);
testOK(char[].class, 10, NothingIsConstant::testChar);
testOK(int[].class, 10, NothingIsConstant::testInt);
testOK(float[].class, 10, NothingIsConstant::testFloat);
testOK(long[].class, 10, NothingIsConstant::testLong);
testOK(double[].class, 10, NothingIsConstant::testDouble);
testOK(null, 10, NothingIsConstant::testVoid);
}
public static void testOK(Class<?> expectClass, int expectLen, Callable<Object> test) throws Exception {
for (int c = 0; c < ITERS; c++) {
Object res = test.call();
if (res == null) {
if (expectClass != null) {
throw new IllegalStateException("Unexpected null result");
}
continue;
}
Class<?> actualClass = res.getClass();
if (!actualClass.equals(expectClass)) {
throw new IllegalStateException("Wrong class: expected = " + expectClass + ", but got " + actualClass);
}
int actualLen = Array.getLength(res);
if (actualLen != expectLen) {
throw new IllegalStateException("Wrong length: expected = " + expectLen + ", but got " + actualLen);
}
}
}
static volatile Object sink;
public static void testIAE(Callable<Object> test) throws Exception {
for (int c = 0; c < ITERS; c++) {
try {
sink = test.call();
throw new IllegalStateException("Expected IAE");
} catch (IllegalArgumentException iae) {
// expected
}
}
}
static volatile int sampleLenNeg = -1;
static volatile int sampleLenZero = 0;
static volatile int sampleLen = 10;
static volatile Class<?> classBoolean = boolean.class;
static volatile Class<?> classByte = byte.class;
static volatile Class<?> classShort = short.class;
static volatile Class<?> classChar = char.class;
static volatile Class<?> classInt = int.class;
static volatile Class<?> classFloat = float.class;
static volatile Class<?> classLong = long.class;
static volatile Class<?> classDouble = double.class;
static volatile Class<?> classVoid = void.class;
static volatile Class<?> classObject = Object.class;
static volatile Class<?> classArray = Object[].class;
static volatile Class<?> classNull = null;
static class AllConstants {
static Object testBoolean() { return UNSAFE.allocateUninitializedArray(boolean.class, 10); }
static Object testByte() { return UNSAFE.allocateUninitializedArray(byte.class, 10); }
static Object testShort() { return UNSAFE.allocateUninitializedArray(short.class, 10); }
static Object testChar() { return UNSAFE.allocateUninitializedArray(char.class, 10); }
static Object testInt() { return UNSAFE.allocateUninitializedArray(int.class, 10); }
static Object testFloat() { return UNSAFE.allocateUninitializedArray(float.class, 10); }
static Object testLong() { return UNSAFE.allocateUninitializedArray(long.class, 10); }
static Object testDouble() { return UNSAFE.allocateUninitializedArray(double.class, 10); }
static Object testVoid() { return UNSAFE.allocateUninitializedArray(void.class, 10); }
static Object testObject() { return UNSAFE.allocateUninitializedArray(Object.class, 10); }
static Object testArray() { return UNSAFE.allocateUninitializedArray(Object[].class, 10); }
static Object testNull() { return UNSAFE.allocateUninitializedArray(null, 10); }
static Object testZero() { return UNSAFE.allocateUninitializedArray(int.class, 0); }
static Object testNeg() { return UNSAFE.allocateUninitializedArray(int.class, -1); }
}
static class ClassIsConstant {
static Object testBoolean() { return UNSAFE.allocateUninitializedArray(boolean.class, sampleLen); }
static Object testByte() { return UNSAFE.allocateUninitializedArray(byte.class, sampleLen); }
static Object testShort() { return UNSAFE.allocateUninitializedArray(short.class, sampleLen); }
static Object testChar() { return UNSAFE.allocateUninitializedArray(char.class, sampleLen); }
static Object testInt() { return UNSAFE.allocateUninitializedArray(int.class, sampleLen); }
static Object testFloat() { return UNSAFE.allocateUninitializedArray(float.class, sampleLen); }
static Object testLong() { return UNSAFE.allocateUninitializedArray(long.class, sampleLen); }
static Object testDouble() { return UNSAFE.allocateUninitializedArray(double.class, sampleLen); }
static Object testVoid() { return UNSAFE.allocateUninitializedArray(void.class, sampleLen); }
static Object testObject() { return UNSAFE.allocateUninitializedArray(Object.class, sampleLen); }
static Object testArray() { return UNSAFE.allocateUninitializedArray(Object[].class, sampleLen); }
static Object testNull() { return UNSAFE.allocateUninitializedArray(null, sampleLen); }
static Object testZero() { return UNSAFE.allocateUninitializedArray(int.class, sampleLenZero); }
static Object testNeg() { return UNSAFE.allocateUninitializedArray(int.class, sampleLenNeg); }
}
static class LengthIsConstant {
static Object testBoolean() { return UNSAFE.allocateUninitializedArray(classBoolean, 10); }
static Object testByte() { return UNSAFE.allocateUninitializedArray(classByte, 10); }
static Object testShort() { return UNSAFE.allocateUninitializedArray(classShort, 10); }
static Object testChar() { return UNSAFE.allocateUninitializedArray(classChar, 10); }
static Object testInt() { return UNSAFE.allocateUninitializedArray(classInt, 10); }
static Object testFloat() { return UNSAFE.allocateUninitializedArray(classFloat, 10); }
static Object testLong() { return UNSAFE.allocateUninitializedArray(classLong, 10); }
static Object testDouble() { return UNSAFE.allocateUninitializedArray(classDouble, 10); }
static Object testVoid() { return UNSAFE.allocateUninitializedArray(classVoid, 10); }
static Object testObject() { return UNSAFE.allocateUninitializedArray(classObject, 10); }
static Object testArray() { return UNSAFE.allocateUninitializedArray(classArray, 10); }
static Object testNull() { return UNSAFE.allocateUninitializedArray(classNull, 10); }
static Object testZero() { return UNSAFE.allocateUninitializedArray(classInt, 0); }
static Object testNeg() { return UNSAFE.allocateUninitializedArray(classInt, -1); }
}
static class NothingIsConstant {
static Object testBoolean() { return UNSAFE.allocateUninitializedArray(classBoolean, sampleLen); }
static Object testByte() { return UNSAFE.allocateUninitializedArray(classByte, sampleLen); }
static Object testShort() { return UNSAFE.allocateUninitializedArray(classShort, sampleLen); }
static Object testChar() { return UNSAFE.allocateUninitializedArray(classChar, sampleLen); }
static Object testInt() { return UNSAFE.allocateUninitializedArray(classInt, sampleLen); }
static Object testFloat() { return UNSAFE.allocateUninitializedArray(classFloat, sampleLen); }
static Object testLong() { return UNSAFE.allocateUninitializedArray(classLong, sampleLen); }
static Object testDouble() { return UNSAFE.allocateUninitializedArray(classDouble, sampleLen); }
static Object testVoid() { return UNSAFE.allocateUninitializedArray(classVoid, sampleLen); }
static Object testObject() { return UNSAFE.allocateUninitializedArray(classObject, sampleLen); }
static Object testArray() { return UNSAFE.allocateUninitializedArray(classArray, sampleLen); }
static Object testNull() { return UNSAFE.allocateUninitializedArray(classNull, sampleLen); }
static Object testZero() { return UNSAFE.allocateUninitializedArray(classInt, sampleLenZero); }
static Object testNeg() { return UNSAFE.allocateUninitializedArray(classInt, sampleLenNeg); }
}
}
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