test/micro/org/openjdk/bench/java/lang/ArrayCopyUnalignedBoth.java
author ecaspole
Fri, 08 Mar 2019 17:45:40 -0500
changeset 54043 0324b3756aa2
parent 52595 16609197022c
permissions -rw-r--r--
8220368: Update String.indexOf to test all the C2 intrinsics Summary: Add new micros for Latin1 and UTF-16 Reviewed-by: kvn, redestad
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/*
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 * Copyright (c) 2014 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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package org.openjdk.bench.java.lang;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.BenchmarkMode;
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import org.openjdk.jmh.annotations.Mode;
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import org.openjdk.jmh.annotations.OutputTimeUnit;
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import org.openjdk.jmh.annotations.Param;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import java.util.concurrent.TimeUnit;
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/**
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 * Benchmark measuring Unaligned System.arraycopy.
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 */
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@State(Scope.Thread)
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public class ArrayCopyUnalignedBoth {
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    @Param({"1", "3", "5", "10", "20", "70", "150", "300", "600", "1200"})
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    int length;
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    int fromPos, toPos;
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    byte[] fromByteArr, toByteArr;
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    char[] fromCharArr, toCharArr;
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    int[] fromIntArr, toIntArr;
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    long[] fromLongArr, toLongArr;
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    @Setup
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    public void setup() {
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        // Both positions Unaligned
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        fromPos = 9;
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        toPos = 10;
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        fromByteArr = new byte[1210];
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        toByteArr = new byte[1210];
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        fromCharArr = new char[1210];
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        toCharArr = new char[1210];
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        fromIntArr = new int[1210];
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        toIntArr = new int[1210];
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        fromLongArr = new long[1210];
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        toLongArr = new long[1210];
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    }
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    @Benchmark
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    public void testByte() {
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        System.arraycopy(fromByteArr, fromPos, toByteArr, toPos, length);
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    }
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    @Benchmark
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    public void testChar() {
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        System.arraycopy(fromCharArr, fromPos, toCharArr, toPos, length);
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    }
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    @Benchmark
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    public void testInt() {
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        System.arraycopy(fromIntArr, fromPos, toIntArr, toPos, length);
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    }
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    @Benchmark
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    public void testLong() {
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        System.arraycopy(fromLongArr, fromPos, toLongArr, toPos, length);
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    }
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}