Mercurial > hg > truffle
view truffle/com.oracle.truffle.api.interop.java.test/src/com/oracle/truffle/api/interop/java/test/JavaInteropSpeedTest.java @ 22157:dc83cc1f94f2
Using fully qualified imports
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
---|---|
date | Wed, 16 Sep 2015 11:33:22 +0200 |
parents | 291574f3e498 |
children | 14e6dfb1ef05 |
line wrap: on
line source
/* * 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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 com.oracle.truffle.api.interop.java.test; import com.oracle.truffle.api.interop.TruffleObject; import com.oracle.truffle.api.interop.java.JavaInterop; import java.util.Random; import org.junit.AfterClass; import static org.junit.Assert.assertEquals; import static org.junit.Assert.fail; import org.junit.BeforeClass; import org.junit.Test; public class JavaInteropSpeedTest { private static final int REPEAT = 10000; private static int[] arr; private static long javaTime; private static long interopTime; @BeforeClass public static void beforeTesting() { arr = initArray(REPEAT); for (int i = 0; i < 1000; i++) { JavaInteropSpeedTest t = new JavaInteropSpeedTest(); t.doMinMaxInJava(); t.doMinMaxWithInterOp(); t.assertSame(); } } private int mmInOp; private int mmInJava; @Test public void doMinMaxInJava() { int max = 0; long now = System.currentTimeMillis(); for (int i = 0; i < arr.length; i++) { max = Math.max(arr[i], max); } javaTime = System.currentTimeMillis() - now; mmInJava = max; } private void assertSame() { assertEquals(mmInJava, mmInOp); } private static final TruffleObject TRUFFLE_MAX = JavaInterop.asTruffleFunction(IntBinaryOperation.class, new IntBinaryOperation() { @Override public int compute(int a, int b) { return Math.max(a, b); } }); private static final IntBinaryOperation MAX = JavaInterop.asJavaFunction(IntBinaryOperation.class, TRUFFLE_MAX); @Test public void doMinMaxWithInterOp() { int max = 0; long now = System.currentTimeMillis(); for (int i = 0; i < arr.length; i++) { max = MAX.compute(arr[i], max); } interopTime = System.currentTimeMillis() - now; mmInOp = max; } @AfterClass public static void nonSignificanDifference() { if (javaTime < 1) { javaTime = 1; } if (interopTime > 6 * javaTime) { fail("Interop took too long: " + interopTime + " ms, while java only " + javaTime + " ms"); } } private static int[] initArray(int size) { Random r = new Random(); int[] tmp = new int[size]; for (int i = 0; i < tmp.length; i++) { tmp[i] = r.nextInt(100000); } return tmp; } }