| /* |
| * Copyright (c) 2014, 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 5043030 |
| * @summary Verify that the method java.lang.reflect.Method.invoke(Object, Object...) |
| * makes use of the same caching mechanism as used for autoboxing |
| * when wrapping returned values of the primitive types. |
| * @author Andrej Golovnin |
| * @run main/othervm -Dsun.reflect.noInflation=true TestMethodReflectValueOf |
| * @run main/othervm -Dsun.reflect.noInflation=false -Dsun.reflect.inflationThreshold=500 TestMethodReflectValueOf |
| */ |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| |
| |
| public class TestMethodReflectValueOf { |
| |
| public static void main(String[] args) { |
| // When the inflation is disabled we compare values using "==" |
| // as the returned values of the primitive types should be cached |
| // by the same mechanism as used for autoboxing. When the inflation |
| // is enabled we use "equals()"-method to compare values as the native |
| // code still creates new instances to wrap values of the primitive |
| // types. |
| boolean checkIdentity = Boolean.getBoolean("sun.reflect.noInflation"); |
| |
| // Boolean#valueOf test |
| testMethod(Boolean.TYPE, Boolean.FALSE, checkIdentity); |
| testMethod(Boolean.TYPE, Boolean.TRUE, checkIdentity); |
| |
| // Byte#valueOf test |
| for (int b = Byte.MIN_VALUE; b < (Byte.MAX_VALUE + 1); b++) { |
| testMethod(Byte.TYPE, Byte.valueOf((byte) b), checkIdentity); |
| } |
| |
| // Character#valueOf test |
| for (char c = '\u0000'; c <= '\u007F'; c++) { |
| testMethod(Character.TYPE, Character.valueOf(c), checkIdentity); |
| } |
| |
| // Integer#valueOf test |
| for (int i = -128; i <= 127; i++) { |
| testMethod(Integer.TYPE, Integer.valueOf(i), checkIdentity); |
| } |
| |
| // Long#valueOf test |
| for (long l = -128L; l <= 127L; l++) { |
| testMethod(Long.TYPE, Long.valueOf(l), checkIdentity); |
| } |
| |
| // Short#valueOf test |
| for (short s = -128; s <= 127; s++) { |
| testMethod(Short.TYPE, Short.valueOf(s), checkIdentity); |
| } |
| } |
| |
| public static void testMethod(Class<?> primType, Object wrappedValue, |
| boolean checkIdentity) |
| { |
| String methodName = primType.getName() + "Method"; |
| try { |
| Method method = TestMethodReflectValueOf.class.getMethod(methodName, primType); |
| Object result = method.invoke(new TestMethodReflectValueOf(), wrappedValue); |
| if (checkIdentity) { |
| if (result != wrappedValue) { |
| throw new RuntimeException("The value " + wrappedValue |
| + " is not cached for the type " + primType); |
| } |
| } else { |
| if (!result.equals(wrappedValue)) { |
| throw new RuntimeException("The result value " + result |
| + " is not equal to the expected value " |
| + wrappedValue + " for the type " + primType); |
| } |
| } |
| } catch ( NoSuchMethodException | SecurityException |
| | IllegalAccessException | IllegalArgumentException |
| | InvocationTargetException e) |
| { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public int intMethod(int value) { |
| return value; |
| } |
| |
| public long longMethod(long value) { |
| return value; |
| } |
| |
| public short shortMethod(short value) { |
| return value; |
| } |
| |
| public byte byteMethod(byte value) { |
| return value; |
| } |
| |
| public char charMethod(char value) { |
| return value; |
| } |
| |
| public boolean booleanMethod(boolean value) { |
| return value; |
| } |
| |
| } |