| /* |
| * Copyright (c) 2014, 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. |
| */ |
| |
| package java.lang.invoke; |
| |
| import sun.invoke.util.Wrapper; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import com.oracle.testlibrary.jsr292.CodeCacheOverflowProcessor; |
| |
| /* @test |
| * @summary unit tests for varargs array methods: MethodHandleInfo.varargsArray(int), |
| * MethodHandleInfo.varargsArray(Class,int) & MethodHandleInfo.varargsList(int) |
| * @library /lib/testlibrary /lib/testlibrary/jsr292 |
| * @run main/bootclasspath java.lang.invoke.VarargsArrayTest |
| * @run main/bootclasspath -DVarargsArrayTest.MAX_ARITY=255 -DVarargsArrayTest.START_ARITY=250 |
| * java.lang.invoke.VarargsArrayTest |
| */ |
| |
| /* This might take a while and burn lots of metadata: |
| * @run main/bootclasspath -DVarargsArrayTest.MAX_ARITY=255 -DVarargsArrayTest.EXHAUSTIVE=true java.lang.invoke.VarargsArrayTest |
| */ |
| public class VarargsArrayTest { |
| private static final Class<?> CLASS = VarargsArrayTest.class; |
| private static final int MAX_ARITY = Integer.getInteger(CLASS.getSimpleName()+".MAX_ARITY", 40); |
| private static final int START_ARITY = Integer.getInteger(CLASS.getSimpleName()+".START_ARITY", 0); |
| private static final boolean EXHAUSTIVE = Boolean.getBoolean(CLASS.getSimpleName()+".EXHAUSTIVE"); |
| |
| public static void main(String[] args) throws Throwable { |
| CodeCacheOverflowProcessor.runMHTest(VarargsArrayTest::test); |
| } |
| |
| public static void test() throws Throwable { |
| testVarargsArray(); |
| testVarargsReferenceArray(); |
| testVarargsPrimitiveArray(); |
| } |
| |
| public static void testVarargsArray() throws Throwable { |
| final int MIN = START_ARITY; |
| final int MAX = MAX_ARITY-2; // 253+1 would cause parameter overflow with 'this' added |
| for (int nargs = MIN; nargs <= MAX; nargs = nextArgCount(nargs, 17, MAX)) { |
| MethodHandle target = MethodHandleImpl.varargsArray(nargs); |
| Object[] args = new Object[nargs]; |
| for (int i = 0; i < nargs; i++) |
| args[i] = "#"+i; |
| Object res = target.invokeWithArguments(args); |
| assertArrayEquals(args, (Object[])res); |
| } |
| } |
| |
| public static void testVarargsReferenceArray() throws Throwable { |
| testTypedVarargsArray(Object[].class); |
| testTypedVarargsArray(String[].class); |
| testTypedVarargsArray(Number[].class); |
| } |
| |
| public static void testVarargsPrimitiveArray() throws Throwable { |
| testTypedVarargsArray(int[].class); |
| testTypedVarargsArray(long[].class); |
| testTypedVarargsArray(byte[].class); |
| testTypedVarargsArray(boolean[].class); |
| testTypedVarargsArray(short[].class); |
| testTypedVarargsArray(char[].class); |
| testTypedVarargsArray(float[].class); |
| testTypedVarargsArray(double[].class); |
| } |
| |
| private static int nextArgCount(int nargs, int density, int MAX) { |
| if (EXHAUSTIVE) return nargs + 1; |
| if (nargs >= MAX) return Integer.MAX_VALUE; |
| int BOT = 20, TOP = MAX-5; |
| if (density < 10) { BOT = 10; MAX = TOP-2; } |
| if (nargs <= BOT || nargs >= TOP) { |
| ++nargs; |
| } else { |
| int bump = Math.max(1, 100 / density); |
| nargs += bump; |
| if (nargs > TOP) nargs = TOP; |
| } |
| return nargs; |
| } |
| |
| private static void testTypedVarargsArray(Class<?> arrayType) throws Throwable { |
| Class<?> elemType = arrayType.getComponentType(); |
| int MIN = START_ARITY; |
| int MAX = MAX_ARITY-2; // 253+1 would cause parameter overflow with 'this' added |
| int density = 3; |
| if (elemType == int.class || elemType == long.class) density = 7; |
| if (elemType == long.class || elemType == double.class) { MAX /= 2; MIN /= 2; } |
| for (int nargs = MIN; nargs <= MAX; nargs = nextArgCount(nargs, density, MAX)) { |
| Object[] args = makeTestArray(elemType, nargs); |
| MethodHandle varargsArray = MethodHandleImpl.varargsArray(arrayType, nargs); |
| MethodType vaType = varargsArray.type(); |
| assertEquals(arrayType, vaType.returnType()); |
| if (nargs != 0) { |
| assertEquals(elemType, vaType.parameterType(0)); |
| assertEquals(elemType, vaType.parameterType(vaType.parameterCount()-1)); |
| } |
| assertEquals(MethodType.methodType(arrayType, Collections.<Class<?>>nCopies(nargs, elemType)), |
| vaType); |
| Object res = varargsArray.invokeWithArguments(args); |
| assertEquals(res.getClass(), arrayType); |
| String resString = toArrayString(res); |
| assertEquals(Arrays.toString(args), resString); |
| |
| MethodHandle spreader = varargsArray.asSpreader(arrayType, nargs); |
| MethodType stype = spreader.type(); |
| assert(stype == MethodType.methodType(arrayType, arrayType)); |
| if (nargs <= 5) { |
| // invoke target as a spreader also: |
| @SuppressWarnings("cast") |
| Object res2 = spreader.invokeWithArguments((Object)res); |
| String res2String = toArrayString(res2); |
| assertEquals(Arrays.toString(args), res2String); |
| // invoke the spreader on a generic Object[] array; check for error |
| try { |
| Object res3 = spreader.invokeWithArguments((Object)args); |
| String res3String = toArrayString(res3); |
| assertTrue(arrayType.getName(), arrayType.isAssignableFrom(Object[].class)); |
| assertEquals(Arrays.toString(args), res3String); |
| } catch (ClassCastException ex) { |
| assertFalse(arrayType.getName(), arrayType.isAssignableFrom(Object[].class)); |
| } |
| } |
| if (nargs == 0) { |
| // invoke spreader on null arglist |
| Object res3 = spreader.invokeWithArguments((Object)null); |
| String res3String = toArrayString(res3); |
| assertEquals(Arrays.toString(args), res3String); |
| } |
| } |
| } |
| |
| private static Object[] makeTestArray(Class<?> elemType, int len) { |
| Wrapper elem = null; |
| if (elemType.isPrimitive()) |
| elem = Wrapper.forPrimitiveType(elemType); |
| else if (Wrapper.isWrapperType(elemType)) |
| elem = Wrapper.forWrapperType(elemType); |
| Object[] args = new Object[len]; |
| for (int i = 0; i < len; i++) { |
| Object arg = i * 100; |
| if (elem == null) { |
| if (elemType == String.class) |
| arg = "#"+arg; |
| arg = elemType.cast(arg); // just to make sure |
| } else { |
| switch (elem) { |
| case BOOLEAN: arg = (i % 3 == 0); break; |
| case CHAR: arg = 'a' + i; break; |
| case LONG: arg = (long)i * 1000_000_000; break; |
| case FLOAT: arg = (float)i / 100; break; |
| case DOUBLE: arg = (double)i / 1000_000; break; |
| } |
| arg = elem.cast(arg, elemType); |
| } |
| args[i] = arg; |
| } |
| return args; |
| } |
| |
| private static String toArrayString(Object a) { |
| if (a == null) return "null"; |
| Class<?> elemType = a.getClass().getComponentType(); |
| if (elemType == null) return a.toString(); |
| if (elemType.isPrimitive()) { |
| switch (Wrapper.forPrimitiveType(elemType)) { |
| case INT: return Arrays.toString((int[])a); |
| case BYTE: return Arrays.toString((byte[])a); |
| case BOOLEAN: return Arrays.toString((boolean[])a); |
| case SHORT: return Arrays.toString((short[])a); |
| case CHAR: return Arrays.toString((char[])a); |
| case FLOAT: return Arrays.toString((float[])a); |
| case LONG: return Arrays.toString((long[])a); |
| case DOUBLE: return Arrays.toString((double[])a); |
| } |
| } |
| return Arrays.toString((Object[])a); |
| } |
| |
| public static void assertArrayEquals(Object[] arr1, Object[] arr2) { |
| if (arr1 == null && arr2 == null) return; |
| if (arr1 != null && arr2 != null && arr1.length == arr2.length) { |
| for (int i = 0; i < arr1.length; i++) { |
| assertEquals(arr1[i], arr2[i]); |
| } |
| return; |
| } |
| throw new AssertionError(Arrays.deepToString(arr1) + " != " + Arrays.deepToString(arr2)); |
| } |
| |
| public static void assertEquals(Object o1, Object o2) { |
| if (o1 == null && o2 == null) return; |
| if (o1 != null && o1.equals(o2)) return; |
| throw new AssertionError(o1 + " != " + o2); |
| } |
| |
| public static void assertTrue(String msg, boolean b) { |
| if (!b) { |
| throw new AssertionError(msg); |
| } |
| } |
| |
| public static void assertFalse(String msg, boolean b) { |
| assertTrue(msg, !b); |
| } |
| } |