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 * 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
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 *
 * 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.
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package org.openjdk.bench.javax.imageio.stream;

import java.io.IOException;

import java.util.concurrent.TimeUnit;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
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;
import org.openjdk.jmh.infra.Blackhole;

import javax.imageio.stream.ImageInputStreamImpl;
import javax.imageio.stream.ImageOutputStreamImpl;

/**
 * Examine ImageInpuStream operations
 */
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Warmup(iterations = 5, time = 1)
@Measurement(iterations = 5, time = 1)
@Fork(3)
@State(Scope.Benchmark)
public class ImageInputStreamBench {

    // private static final byte[] ARRAY = new byte[8];
    private ImageInputStreamImpl imageInputStream;

    @Setup
    public void createInstants() {
        // Various instants during the same day
        imageInputStream = new ImageInputStreamImpl() {
            @Override
            public int read() {
                throw new UnsupportedOperationException();
            }

            @Override
            public int read(byte[] b, int off, int len) throws IOException {
                //System.arraycopy(ARRAY, 0, b, off, len);
                return len;
            }
        };

    }

    @Benchmark
    public void readInt(Blackhole bh) throws IOException {
        bh.consume(imageInputStream.readInt());
    }

    @Benchmark
    public void readLong(Blackhole bh) throws IOException {
        bh.consume(imageInputStream.readLong());
    }

}