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 * Copyright (c) 2018, 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

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 * questions.

 */

package org.openjdk.bench.java.util;

import java.security.InvalidAlgorithmParameterException;

import java.security.InvalidKeyException;

import java.security.NoSuchAlgorithmException;

import java.security.spec.InvalidParameterSpecException;

import java.util.Arrays;

import java.util.concurrent.TimeUnit;

import javax.crypto.BadPaddingException;

import javax.crypto.IllegalBlockSizeException;

import javax.crypto.NoSuchPaddingException;

import org.openjdk.jmh.annotations.Benchmark;

import org.openjdk.jmh.annotations.BenchmarkMode;

import org.openjdk.jmh.annotations.Measurement;

import org.openjdk.jmh.annotations.Mode;

import org.openjdk.jmh.annotations.OutputTimeUnit;

import org.openjdk.jmh.annotations.Param;

import org.openjdk.jmh.annotations.Scope;

import org.openjdk.jmh.annotations.Setup;

import org.openjdk.jmh.annotations.State;

import org.openjdk.jmh.annotations.Warmup;

@BenchmarkMode(Mode.AverageTime)

@OutputTimeUnit(TimeUnit.NANOSECONDS)

@State(Scope.Thread)

public abstract class ArraysMismatch {

    @Param({"90", "800"})

    private static int size;

    static final byte fill = 99;

    static final byte mismatch = -1;

    int leftStartRange;

    int leftEndRange;

    int rightStartRange;

    int rightEndRange;

    @Setup

    public void setup() {

        leftStartRange = size / 4;

        leftEndRange = size - size / 4;

        rightStartRange = size / 4 + 10;

        rightEndRange = size - size / 4 + 10;

        specificSetup();

    }

    abstract void specificSetup();

    public static class Byte extends ArraysMismatch {

        byte[] left;

        byte[] right_startMismatch;

        byte[] right_midMismatch;

        byte[] right_endMismatch;

        byte[] right_matches;

        public void specificSetup() {

            left = new byte[size];

            Arrays.fill(left, (byte) fill);

            right_startMismatch = Arrays.copyOf(left, left.length);

            right_startMismatch[2] = (byte) mismatch;

            right_midMismatch = Arrays.copyOf(left, left.length);

            right_midMismatch[size / 2] = (byte) mismatch;

            right_endMismatch = Arrays.copyOf(left, left.length);

            right_endMismatch[size - 5] = (byte) mismatch;

            right_matches = Arrays.copyOf(left, left.length);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int matches() {

            return Arrays.mismatch(left, right_matches);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int differentSubrangeMatches() {

            return Arrays.mismatch(left, leftStartRange, leftEndRange, right_matches, rightStartRange, rightEndRange);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchEnd() {

            return Arrays.mismatch(left, right_endMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchMid() {

            return Arrays.mismatch(left, right_midMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchStart() {

            return Arrays.mismatch(left, right_startMismatch);

        }

    }

    public static class Char extends ArraysMismatch {

        char[] left;

        char[] right_startMismatch;

        char[] right_midMismatch;

        char[] right_endMismatch;

        char[] right_matches;

        public void specificSetup() {

            left = new char[size];

            Arrays.fill(left, (char) fill);

            right_startMismatch = Arrays.copyOf(left, left.length);

            right_startMismatch[2] = (char) mismatch;

            right_midMismatch = Arrays.copyOf(left, left.length);

            right_midMismatch[size / 2] = (char) mismatch;

            right_endMismatch = Arrays.copyOf(left, left.length);

            right_endMismatch[size - 5] = (char) mismatch;

            right_matches = Arrays.copyOf(left, left.length);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int matches() {

            return Arrays.mismatch(left, right_matches);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int differentSubrangeMatches() {

            return Arrays.mismatch(left, leftStartRange, leftEndRange, right_matches, rightStartRange, rightEndRange);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchEnd() {

            return Arrays.mismatch(left, right_endMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchMid() {

            return Arrays.mismatch(left, right_midMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchStart() {

            return Arrays.mismatch(left, right_startMismatch);

        }

    }

    public static class Short extends ArraysMismatch {

        short[] left;

        short[] right_startMismatch;

        short[] right_midMismatch;

        short[] right_endMismatch;

        short[] right_matches;

        public void specificSetup() {

            left = new short[size];

            Arrays.fill(left, (short) fill);

            right_startMismatch = Arrays.copyOf(left, left.length);

            right_startMismatch[2] = (short) mismatch;

            right_midMismatch = Arrays.copyOf(left, left.length);

            right_midMismatch[size / 2] = (short) mismatch;

            right_endMismatch = Arrays.copyOf(left, left.length);

            right_endMismatch[size - 5] = (short) mismatch;

            right_matches = Arrays.copyOf(left, left.length);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int matches() {

            return Arrays.mismatch(left, right_matches);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int differentSubrangeMatches() {

            return Arrays.mismatch(left, leftStartRange, leftEndRange, right_matches, rightStartRange, rightEndRange);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchEnd() {

            return Arrays.mismatch(left, right_endMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchMid() {

            return Arrays.mismatch(left, right_midMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchStart() {

            return Arrays.mismatch(left, right_startMismatch);

        }

    }

    public static class Int extends ArraysMismatch {

        int[] left;

        int[] right_startMismatch;

        int[] right_midMismatch;

        int[] right_endMismatch;

        int[] right_matches;

        public void specificSetup() {

            left = new int[size];

            Arrays.fill(left, (int) fill);

            right_startMismatch = Arrays.copyOf(left, left.length);

            right_startMismatch[2] = (int) mismatch;

            right_midMismatch = Arrays.copyOf(left, left.length);

            right_midMismatch[size / 2] = (int) mismatch;

            right_endMismatch = Arrays.copyOf(left, left.length);

            right_endMismatch[size - 5] = (int) mismatch;

            right_matches = Arrays.copyOf(left, left.length);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int matches() {

            return Arrays.mismatch(left, right_matches);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int differentSubrangeMatches() {

            return Arrays.mismatch(left, leftStartRange, leftEndRange, right_matches, rightStartRange, rightEndRange);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchEnd() {

            return Arrays.mismatch(left, right_endMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchMid() {

            return Arrays.mismatch(left, right_midMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchStart() {

            return Arrays.mismatch(left, right_startMismatch);

        }

    }

    public static class Long extends ArraysMismatch {

        long[] left;

        long[] right_startMismatch;

        long[] right_midMismatch;

        long[] right_endMismatch;

        long[] right_matches;

        public void specificSetup() {

            left = new long[size];

            Arrays.fill(left, (long) fill);

            right_startMismatch = Arrays.copyOf(left, left.length);

            right_startMismatch[2] = (long) mismatch;

            right_midMismatch = Arrays.copyOf(left, left.length);

            right_midMismatch[size / 2] = (long) mismatch;

            right_endMismatch = Arrays.copyOf(left, left.length);

            right_endMismatch[size - 5] = (long) mismatch;

            right_matches = Arrays.copyOf(left, left.length);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int matches() {

            return Arrays.mismatch(left, right_matches);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int differentSubrangeMatches() {

            return Arrays.mismatch(left, leftStartRange, leftEndRange, right_matches, rightStartRange, rightEndRange);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchEnd() {

            return Arrays.mismatch(left, right_endMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchMid() {

            return Arrays.mismatch(left, right_midMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchStart() {

            return Arrays.mismatch(left, right_startMismatch);

        }

    }

    public static class Float extends ArraysMismatch {

        float[] left;

        float[] right_startMismatch;

        float[] right_midMismatch;

        float[] right_endMismatch;

        float[] right_matches;

        public void specificSetup() {

            left = new float[size];

            Arrays.fill(left, (float) fill);

            right_startMismatch = Arrays.copyOf(left, left.length);

            right_startMismatch[2] = (float) mismatch;

            right_midMismatch = Arrays.copyOf(left, left.length);

            right_midMismatch[size / 2] = (float) mismatch;

            right_endMismatch = Arrays.copyOf(left, left.length);

            right_endMismatch[size - 5] = (float) mismatch;

            right_matches = Arrays.copyOf(left, left.length);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int matches() {

            return Arrays.mismatch(left, right_matches);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int differentSubrangeMatches() {

            return Arrays.mismatch(left, leftStartRange, leftEndRange, right_matches, rightStartRange, rightEndRange);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchEnd() {

            return Arrays.mismatch(left, right_endMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchMid() {

            return Arrays.mismatch(left, right_midMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchStart() {

            return Arrays.mismatch(left, right_startMismatch);

        }

    }

    public static class Double extends ArraysMismatch {

        double[] left;

        double[] right_startMismatch;

        double[] right_midMismatch;

        double[] right_endMismatch;

        double[] right_matches;

        public void specificSetup() {

            left = new double[size];

            Arrays.fill(left, (double) fill);

            right_startMismatch = Arrays.copyOf(left, left.length);

            right_startMismatch[2] = (double) mismatch;

            right_midMismatch = Arrays.copyOf(left, left.length);

            right_midMismatch[size / 2] = (double) mismatch;

            right_endMismatch = Arrays.copyOf(left, left.length);

            right_endMismatch[size - 5] = (double) mismatch;

            right_matches = Arrays.copyOf(left, left.length);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int matches() {

            return Arrays.mismatch(left, right_matches);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int differentSubrangeMatches() {

            return Arrays.mismatch(left, leftStartRange, leftEndRange, right_matches, rightStartRange, rightEndRange);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchEnd() {

            return Arrays.mismatch(left, right_endMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchMid() {

            return Arrays.mismatch(left, right_midMismatch);

        }

        @Benchmark

        @Warmup(iterations = 3)

        @Measurement(iterations = 3)

        public int mismatchStart() {

            return Arrays.mismatch(left, right_startMismatch);

        }

    }

}