242 lines
10 KiB
Java
242 lines
10 KiB
Java
/*
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* Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import sun.invoke.util.Wrapper;
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import test.java.lang.invoke.lib.CodeCacheOverflowProcessor;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandleHelper;
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import java.lang.invoke.MethodType;
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import java.util.Arrays;
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import java.util.Collections;
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/* @test
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* @summary unit tests for varargs array methods: MethodHandleInfo.varargsArray(int),
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* MethodHandleInfo.varargsArray(Class,int) & MethodHandleInfo.varargsList(int)
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* @modules java.base/sun.invoke.util
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* @library /test/lib /java/lang/invoke/common
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* @compile/module=java.base java/lang/invoke/MethodHandleHelper.java
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* @run main/bootclasspath VarargsArrayTest
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* @run main/bootclasspath/othervm -DVarargsArrayTest.MAX_ARITY=255 -DVarargsArrayTest.START_ARITY=250
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* VarargsArrayTest
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*/
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/* This might take a while and burn lots of metadata:
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* @run main/bootclasspath -DVarargsArrayTest.MAX_ARITY=255 -DVarargsArrayTest.EXHAUSTIVE=true VarargsArrayTest
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*/
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public class VarargsArrayTest {
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private static final Class<?> CLASS = VarargsArrayTest.class;
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private static final int MAX_ARITY = Integer.getInteger(
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CLASS.getSimpleName()+".MAX_ARITY", 40);
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private static final int START_ARITY = Integer.getInteger(
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CLASS.getSimpleName()+".START_ARITY", 0);
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private static final boolean EXHAUSTIVE = Boolean.getBoolean(
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CLASS.getSimpleName()+".EXHAUSTIVE");
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public static void main(String[] args) throws Throwable {
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CodeCacheOverflowProcessor.runMHTest(VarargsArrayTest::test);
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}
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public static void test() throws Throwable {
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testVarargsArray();
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testVarargsReferenceArray();
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testVarargsPrimitiveArray();
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}
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public static void testVarargsArray() throws Throwable {
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final int MIN = START_ARITY;
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final int MAX = MAX_ARITY-2; // 253+1 would cause parameter overflow with 'this' added
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for (int nargs = MIN; nargs <= MAX; nargs = nextArgCount(nargs, 17, MAX)) {
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MethodHandle target = MethodHandleHelper.varargsArray(nargs);
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Object[] args = new Object[nargs];
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for (int i = 0; i < nargs; i++)
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args[i] = "#"+i;
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Object res = target.invokeWithArguments(args);
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assertArrayEquals(args, (Object[])res);
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}
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}
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private static class CustomClass {}
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public static void testVarargsReferenceArray() throws Throwable {
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testTypedVarargsArray(Object[].class);
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testTypedVarargsArray(String[].class);
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testTypedVarargsArray(Number[].class);
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testTypedVarargsArray(CustomClass[].class);
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}
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public static void testVarargsPrimitiveArray() throws Throwable {
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testTypedVarargsArray(int[].class);
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testTypedVarargsArray(long[].class);
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testTypedVarargsArray(byte[].class);
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testTypedVarargsArray(boolean[].class);
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testTypedVarargsArray(short[].class);
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testTypedVarargsArray(char[].class);
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testTypedVarargsArray(float[].class);
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testTypedVarargsArray(double[].class);
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}
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private static int nextArgCount(int nargs, int density, int MAX) {
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if (EXHAUSTIVE) return nargs + 1;
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if (nargs >= MAX) return Integer.MAX_VALUE;
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int BOT = 20, TOP = MAX-5;
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if (density < 10) { BOT = 10; MAX = TOP-2; }
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if (nargs <= BOT || nargs >= TOP) {
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++nargs;
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} else {
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int bump = Math.max(1, 100 / density);
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nargs += bump;
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if (nargs > TOP) nargs = TOP;
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}
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return nargs;
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}
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private static void testTypedVarargsArray(Class<?> arrayType) throws Throwable {
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Class<?> elemType = arrayType.getComponentType();
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int MIN = START_ARITY;
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int MAX = MAX_ARITY-2; // 253+1 would cause parameter overflow with 'this' added
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int density = 3;
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if (elemType == int.class || elemType == long.class) density = 7;
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if (elemType == long.class || elemType == double.class) { MAX /= 2; MIN /= 2; }
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for (int nargs = MIN; nargs <= MAX; nargs = nextArgCount(nargs, density, MAX)) {
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Object[] args = makeTestArray(elemType, nargs);
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MethodHandle varargsArray = MethodHandleHelper.varargsArray(arrayType, nargs);
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MethodType vaType = varargsArray.type();
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assertEquals(arrayType, vaType.returnType());
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if (nargs != 0) {
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assertEquals(elemType, vaType.parameterType(0));
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assertEquals(elemType, vaType.parameterType(vaType.parameterCount()-1));
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}
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assertEquals(MethodType.methodType(arrayType, Collections.<Class<?>>nCopies(nargs, elemType)),
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vaType);
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Object res = varargsArray.invokeWithArguments(args);
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assertEquals(res.getClass(), arrayType);
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String resString = toArrayString(res);
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assertEquals(Arrays.toString(args), resString);
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MethodHandle spreader = varargsArray.asSpreader(arrayType, nargs);
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MethodType stype = spreader.type();
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assert(stype == MethodType.methodType(arrayType, arrayType));
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if (nargs <= 5) {
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// invoke target as a spreader also:
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@SuppressWarnings("cast")
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Object res2 = spreader.invokeWithArguments((Object)res);
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String res2String = toArrayString(res2);
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assertEquals(Arrays.toString(args), res2String);
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// invoke the spreader on a generic Object[] array; check for error
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try {
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Object res3 = spreader.invokeWithArguments((Object)args);
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String res3String = toArrayString(res3);
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assertTrue(arrayType.getName(), arrayType.isAssignableFrom(Object[].class));
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assertEquals(Arrays.toString(args), res3String);
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} catch (ClassCastException ex) {
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assertFalse(arrayType.getName(), arrayType.isAssignableFrom(Object[].class));
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}
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}
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if (nargs == 0) {
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// invoke spreader on null arglist
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Object res3 = spreader.invokeWithArguments((Object)null);
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String res3String = toArrayString(res3);
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assertEquals(Arrays.toString(args), res3String);
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}
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}
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}
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private static Object[] makeTestArray(Class<?> elemType, int len) {
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Wrapper elem = null;
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if (elemType.isPrimitive())
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elem = Wrapper.forPrimitiveType(elemType);
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else if (Wrapper.isWrapperType(elemType))
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elem = Wrapper.forWrapperType(elemType);
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Object[] args = new Object[len];
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for (int i = 0; i < len; i++) {
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Object arg = i * 100;
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if (elem == null) {
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if (elemType == String.class)
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arg = "#"+arg;
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if (elemType == CustomClass.class)
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arg = new CustomClass();
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arg = elemType.cast(arg); // just to make sure
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} else {
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switch (elem) {
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case BOOLEAN: arg = (i % 3 == 0); break;
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case CHAR: arg = 'a' + i; break;
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case LONG: arg = (long)i * 1000_000_000; break;
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case FLOAT: arg = (float)i / 100; break;
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case DOUBLE: arg = (double)i / 1000_000; break;
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}
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arg = elem.cast(arg, elemType);
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}
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args[i] = arg;
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}
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return args;
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}
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private static String toArrayString(Object a) {
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if (a == null) return "null";
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Class<?> elemType = a.getClass().getComponentType();
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if (elemType == null) return a.toString();
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if (elemType.isPrimitive()) {
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switch (Wrapper.forPrimitiveType(elemType)) {
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case INT: return Arrays.toString((int[])a);
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case BYTE: return Arrays.toString((byte[])a);
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case BOOLEAN: return Arrays.toString((boolean[])a);
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case SHORT: return Arrays.toString((short[])a);
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case CHAR: return Arrays.toString((char[])a);
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case FLOAT: return Arrays.toString((float[])a);
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case LONG: return Arrays.toString((long[])a);
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case DOUBLE: return Arrays.toString((double[])a);
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}
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}
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return Arrays.toString((Object[])a);
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}
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public static void assertArrayEquals(Object[] arr1, Object[] arr2) {
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if (arr1 == null && arr2 == null) return;
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if (arr1 != null && arr2 != null && arr1.length == arr2.length) {
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for (int i = 0; i < arr1.length; i++) {
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assertEquals(arr1[i], arr2[i]);
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}
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return;
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}
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throw new AssertionError(Arrays.deepToString(arr1)
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+ " != " + Arrays.deepToString(arr2));
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}
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public static void assertEquals(Object o1, Object o2) {
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if (o1 == null && o2 == null) return;
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if (o1 != null && o1.equals(o2)) return;
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throw new AssertionError(o1 + " != " + o2);
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}
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public static void assertTrue(String msg, boolean b) {
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if (!b) {
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throw new AssertionError(msg);
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}
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}
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public static void assertFalse(String msg, boolean b) {
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assertTrue(msg, !b);
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}
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}
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