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JMH benchmarks for Kryo.
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/* Copyright (c) 2008-2023, Nathan Sweet
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided with the distribution.
 * - Neither the name of Esoteric Software nor the names of its contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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package com.esotericsoftware.kryo.benchmarks.io;

import com.esotericsoftware.kryo.io.ByteBufferInput;
import com.esotericsoftware.kryo.io.ByteBufferOutput;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;
import com.esotericsoftware.kryo.unsafe.UnsafeByteBufferInput;
import com.esotericsoftware.kryo.unsafe.UnsafeByteBufferOutput;
import com.esotericsoftware.kryo.unsafe.UnsafeInput;
import com.esotericsoftware.kryo.unsafe.UnsafeOutput;

import org.openjdk.jmh.annotations.Level;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;

@State(Scope.Thread)
public class InputOutputState {
	@Param() public InputOutputState.BufferType bufferType;

	Output output;
	Input input;

	@Setup(Level.Trial)
	public void setup () {
		switch (bufferType) {
		case array:
			output = new Output(1024 * 512);
			input = new Input(output.getBuffer());
			break;
		case unsafeArray:
			output = new UnsafeOutput(1024 * 512);
			input = new UnsafeInput(output.getBuffer());
			break;
		case byteBuffer:
			output = new ByteBufferOutput(1024 * 512);
			input = new ByteBufferInput(((ByteBufferOutput)output).getByteBuffer());
			break;
		case unsafeByteBuffer:
			output = new UnsafeByteBufferOutput(1024 * 512);
			input = new UnsafeByteBufferInput(((UnsafeByteBufferOutput)output).getByteBuffer());
			break;
		}
	}

	public void reset () {
		input.setPosition(0);
		output.setPosition(0);
	}

	static public enum BufferType {
		array, unsafeArray, byteBuffer, unsafeByteBuffer
	}
}